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Zhang Y, Feng K, Song D, Wang Q, Ye S, Liu J, Kainz MJ. Dietary fatty acid transfer in pelagic food webs across trophic and climatic differences of Chinese lakes. Sci Total Environ 2024; 913:169562. [PMID: 38142998 DOI: 10.1016/j.scitotenv.2023.169562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 11/16/2023] [Accepted: 12/19/2023] [Indexed: 12/26/2023]
Abstract
In eutrophic lake ecosystems, cyanobacteria typically lead to unbalanced phytoplankton community structure and low dietary quality for consumers at higher trophic levels. However, it still remains poorly understood how zooplankton manage to respond to seasonal and spatial differences in lake trophic gradients and temperature factors to retain highly required dietary nutrients from phytoplankton. In this field study, we investigated seston and different size classes of zooplankton of temperate and subtropical large lakes of different trophic conditions in China. We used fatty acids (FA) as dietary nutrients from seston to zooplankton to investigate how eutrophication affects the FA composition of various zooplankton size classes. This study revealed a curvilinear relationship between total phosphorus (TP) and polyunsaturated fatty acids (PUFA) contents of edible phytoplankton ("seston") across 3 seasons and 2 climatic areas. The PUFA content of seston increased until mesotrophic lake conditions (TP: 11-20 μg L-1), after which the dietary provision of PUFA for respective consumers declined. Seston FA, rather than trophic condition or water temperature, primarily predicted changes in zooplankton FA, while this predictive power decreased with zooplankton size. Despite increasing eutrophic lake conditions, LC-PUFA content of the zooplankton consistently increased per unit biomass. The results indicate that the nutritional value of phytoplankton was highest in mesotrophic lakes, and lake zooplankton selectively increased their LC-PUFA retention with body size and/or were able to convert dietary FA endogenously to meet their size-specific FA demands, independent of lake location or time (season) or the measured trophic condition of the lake (from oligo- to eutrophic).
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Affiliation(s)
- Yinzhe Zhang
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, 7 South Donghu Road, Wuhan 430072, Hubei, China; University of Chinese Academy of Sciences, Beijing 100049, China; WasserCluster Lunz - Biologische Station, Dr. Carl Kupelwieser Promenade 5, A-3293 Lunz am See, Austria
| | - Kai Feng
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, 7 South Donghu Road, Wuhan 430072, Hubei, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Dan Song
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, 7 South Donghu Road, Wuhan 430072, Hubei, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qidong Wang
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, 7 South Donghu Road, Wuhan 430072, Hubei, China
| | - Shaowen Ye
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, 7 South Donghu Road, Wuhan 430072, Hubei, China
| | - Jiashou Liu
- Donghu Experimental Station of Lake Ecosystems, State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, 7 South Donghu Road, Wuhan 430072, Hubei, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Martin J Kainz
- WasserCluster Lunz - Biologische Station, Dr. Carl Kupelwieser Promenade 5, A-3293 Lunz am See, Austria; Danube University Krems, Research Lab for Aquatic Ecosystem Research and Ecosystem Health, Dr. Karl Dorrek Straße 30, A-3500 Krems, Austria
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2
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Carrasco N, McGovern M, Evenset A, Søreide JE, Arts MT, Jonsson S, Poste AE. Seasonal riverine inputs may affect diet and mercury bioaccumulation in Arctic coastal zooplankton. Sci Total Environ 2024; 906:167643. [PMID: 37806586 DOI: 10.1016/j.scitotenv.2023.167643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Revised: 09/17/2023] [Accepted: 10/05/2023] [Indexed: 10/10/2023]
Abstract
Climate change driven increases in permafrost thaw and terrestrial runoff are expected to facilitate the mobilization and transport of mercury (Hg) from catchment soils to coastal areas in the Arctic, potentially increasing Hg exposure of marine food webs. The main aim of this study was to determine the impacts of seasonal riverine inputs on land-ocean Hg transport, zooplankton diet and Hg bioaccumulation in an Arctic estuary (Adventfjorden, Svalbard). The Adventelva River was a source of dissolved and particulate Hg to Adventfjorden, especially in June and July during the river's main discharge period. Stable isotope and fatty acid analyses suggest that zooplankton diet varied seasonally with diatoms dominating during the spring phytoplankton bloom in May and with increasing contributions of dinoflagellates in the summer months. In addition, there was evidence of increased terrestrial carbon utilization by zooplankton in June and July, when terrestrial particles contributed substantially to the particulate organic matter pool. Total (TotHg) and methyl Hg (MeHg) concentrations in zooplankton increased from April to August related to increased exposure to riverine inputs, and to shifts in zooplankton diet and community structure. Longer and warmer summer seasons will probably increase riverine runoff and thus Hg exposure to Arctic zooplankton.
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Affiliation(s)
- Nathalie Carrasco
- Department of Arctic Marine Biology, UiT, The Arctic University of Norway, 9019 Tromsø, Norway; Oceanographic Institute - Prince Albert I Foundation, 98000, Monaco; Norwegian Institute for Water Research, 9007 Tromsø, Norway.
| | - Maeve McGovern
- Norwegian Institute for Water Research, 9007 Tromsø, Norway
| | | | | | - Michael T Arts
- Toronto Metropolitan University, Toronto M5B 2K3, Canada
| | - Sofi Jonsson
- Department of Environmental Science, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Amanda E Poste
- Department of Arctic Marine Biology, UiT, The Arctic University of Norway, 9019 Tromsø, Norway; Norwegian Institute for Water Research, 9007 Tromsø, Norway; Norwegian Institute for Nature Research, 9296 Tromsø, Norway.
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3
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Zhang L, Zhang L, Sun D. Considering zooplankton as a black box in determining PAH concentrations could result in misjudging their bioaccumulation. Environ Pollut 2023; 316:120672. [PMID: 36395904 DOI: 10.1016/j.envpol.2022.120672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 10/08/2022] [Accepted: 11/13/2022] [Indexed: 06/16/2023]
Abstract
Zooplankton play an important role in energy transfer in the marine food web and form the dietary basis for the size of important fish stocks and the maintenance of their resources. Although zooplankton include numerous taxa with significantly different ecological characteristics and the interspecific differences in optimum body size and taxonomic specificity in fish feeding on zooplankton are remarkable, they are always considered as a whole (like a "black box") in current studies about the transport of persistent organic pollutants through the food chain. This approach might result in misjudgment of their bioaccumulation. In this study, the distribution properties of each taxa of zooplankton community were discerned using data from two cruise surveys conducted in the northern South China Sea. Twelve groups of zooplankton were identified, all of which had distinct ecological and functional characteristics. The carbon-based community structure of zooplankton could explain their variability with respect to polycyclic aromatic hydrocarbons (PAHs). Smaller-sized zooplankton (smaller calanoids and cyclopoids) were more likely to accumulate low molecular weight PAHs (LMW-PAHs), while larger-sized zooplankton (larger calanoids) were more likely to accumulate high molecular weight PAHs (HMW-PAHs). The bioaccumulation capacity of the zooplankton community for LMW-PAHs was negatively correlated with the proportion of omnivores and carnivores, while the opposite was true for HMW-PAHs. These results suggested that the effects of complex community structure within plankton communities should be taken into account when assessing the transfer and bioaccumulation effects of PAHs in the marine food chain.
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Affiliation(s)
- Linjie Zhang
- Key Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, 310000, China; Key Laboratory of Three Gorges Reservoir Region's Eco-environment, Ministry of Education, Chongqing University, Chongqing, 400045, China
| | - Lilan Zhang
- Key Laboratory of Three Gorges Reservoir Region's Eco-environment, Ministry of Education, Chongqing University, Chongqing, 400045, China
| | - Dong Sun
- Key Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, 310000, China; Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519082, China.
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Liu C, Wang R, Gao H, Wu X, Yin D. Transport of trace metals and their bioaccumulation in zooplankton from Changjiang (Yangtze River) to the East China Sea. Sci Total Environ 2022; 851:158156. [PMID: 35988603 DOI: 10.1016/j.scitotenv.2022.158156] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 07/28/2022] [Accepted: 08/16/2022] [Indexed: 06/15/2023]
Abstract
The present study conducted a comprehensive field investigation on the transport and bioaccumulation of six trace metals (Cr, Cd, Pb, Mn, Ni, Cu) along a transect from Changjiang (Yangtze River) to the East China Sea continental shelf, which exhibited large variations in physiochemical properties (salinity, turbidity, pH, chlorophyll a, total nitrogen, dissolved oxygen, dissolved and particulate organic matter). From riverine sites to marine sites, dissolved Cr and Cd significantly increased, dissolved Pb and Mn showed less variations, while dissolved Cu and Ni showed complex spatial distribution patterns. Particulate trace metals (for Cr, Mn, Ni and Cu) were significantly negatively correlated with salinity. As a result, partition coefficients of trace metals (except Pb) were all significantly negatively correlated with salinity, indicating high salinity facilitated desorption/dissolution of metals from particulate phase. Additionally, the Changjiang derived particulate Pb, Mn, Ni and Cu sharply decreased (particularly for Mn) at the downstream of turbidity maximum zone, suggesting the efficient trapping of metals within this region. We further investigated the site-specific bioaccumulation of trace metals in size-fractionated zooplankton. Metal contents in macro-zooplankton were lower than micro- and meso-zooplankton owing to size-dependent zooplankton communities, while site-specific metal bioaccumulation mainly driven by site-specific zooplankton communities and salinity. The bioaccumulation factors of metals (Cr, Cd, Ni and Cu) were significantly negatively correlated with salinity, indicating high salinity hampered metal uptake which might attribute to competition of cations and formation of less bioavailable inorganic complexes with anions. Overall, high salinity generated two-sided effects (elevated dissolved metal concentrations Vs. reduced metal bioaccumulation) on metal contents in zooplankton (especially for Cr, Cd, Ni, and Cu), resulting in metal- and site-specific metal contents. We noticed relatively higher metal contents in zooplankton at hypoxia sites which could further transfer to predators in the East China Sea, and the underlying mechanisms still require future investigation.
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Affiliation(s)
- Chengying Liu
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China
| | - Rui Wang
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China.
| | - Hang Gao
- State Key Laboratory of Marine Geology, School of Ocean and Earth Science, Tongji University, Shanghai 200092, PR China
| | - Xinghua Wu
- China Three Gorges Corporation, Wuhan 430014, PR China
| | - Daqiang Yin
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, PR China
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Zhao J, Zhang H, Liu J, Ke Z, Xiang C, Zhang L, Li K, Lai Y, Ding X, Tan Y. Role of jellyfish in mesozooplankton community stability in a subtropical bay under the long-term impacts of temperature changes. Sci Total Environ 2022; 849:157627. [PMID: 35907549 DOI: 10.1016/j.scitotenv.2022.157627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 07/15/2022] [Accepted: 07/21/2022] [Indexed: 06/15/2023]
Abstract
To understand zooplankton community changes in the context of climate change and anthropogenic disturbances, we analyzed mesozooplankton samples from four seasons in the subtropical Daya Bay, which is susceptible to perceived disturbances in the South China Sea. The zooplankton community was found to be divided into two clusters, namely the Outer-bay Cluster (OC) comprising Noctiluca scintillans, Temora turbinata, and Paracalanus spp., and the Inner-bay Cluster (IC) which was dominated by Pseudevadne tergestina, Oikopleura rufescens, and Paracalanus spp. The OC was recorded in waters with low Chl a concentrations and high salinity, coinciding with open seawater intrusion. The IC occurred in waters with high Chl a concentrations, low salinity, with terrestrial inputs from the Dan'ao River. The dominant cladoceran species has changed in spring from Penilia avirostris to Pseudevadne tergestina owing to suitable temperature conditions and the low wind speed in this region. Most of the keystone species recorded during all seasons were found to be copepods based on co-occurrence network analysis. Numbers of keystone jellyfish (cnidaria) species, such as Geryonia proboscidalis, Chelophyes contorta, and Aeginura grimaldi were significantly higher in summer than in other seasons due to a low-temperature seawater intrusion, which can result in the highest stability of community structures and affect coastal food webs and fishery resources. Our results highlight that zooplankton community succession may occur with long-term temperature changes in the subtropical Daya Bay under global climate change conditions.
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Affiliation(s)
- Jingjing Zhao
- South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; University of Chinese Academy of Sciences, Beijing 100049, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
| | - Huangchen Zhang
- Guangdong Center for Marine Development Research, Guangzhou 510220, China
| | - Jiaxing Liu
- South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Zhixin Ke
- South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Chenhui Xiang
- South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
| | - Liming Zhang
- South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Kaizhi Li
- South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
| | - Yanjiao Lai
- South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; University of Chinese Academy of Sciences, Beijing 100049, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
| | - Xiang Ding
- South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; University of Chinese Academy of Sciences, Beijing 100049, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China
| | - Yehui Tan
- South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; University of Chinese Academy of Sciences, Beijing 100049, China; Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, China.
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6
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Pinger C, Copeman L, Stowell M, Cormack B, Fugate C, Rogers M. Rapid measurement of total lipids in zooplankton using the sulfo-phospho-vanillin reaction. Anal Methods 2022; 14:2665-2672. [PMID: 35748590 DOI: 10.1039/d2ay00665k] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Zooplankton provide a vital source of nutrition to a variety of fish and marine predators. Measuring the total lipid content of zooplankton provides important information about diet quality available to predators, revealing details about trophic dynamics and ecosystem status. We analyze the performance of a microplate assay, utilizing the sulfo-phospho-vanillin (SPV) reaction, to quantify the total lipid content of various large crustacean zooplankton in a rapid and high throughput manner. Pilot experiments were performed by measuring the total lipid content of purchased freeze-dried zooplankton (Calanus finmarchicus and Euphausia superba) by both SPV and gravimetric analysis (low throughput and requires large sample size). The results of the SPV assay were not statistically different from gravimetric analysis for either species (p > 0.05). Further, an inter-laboratory comparison study was performed to measure the total lipid content (% of wet mass) of field-collected Arctic and North Pacific zooplankton (copepods (n = 19) and euphausiids (n = 29)) of various species utilizing multiple analysis methods. Results from thin layer chromatography with flame ionization detection (TLC-FID) demonstrated that lipid classes in zooplankton samples varied in composition of steryl/wax esters (3-95%), triacylglycerols (1-52%), free-fatty acids (0.4-25%), sterols (0-4%) and polar lipids (1-42%). Despite this variation in lipid class composition among samples, the results of the SPV assay agreed well with gravimetric analysis. The mean absolute and relative differences between SPV and gravimetric analysis for all zooplankton lipids in this study were 1.0% and 11.6%, respectively. The SPV assay is rapid (<2 hours), high throughput (25 samples processed in parallel), low cost (supplies <$ 0.67 per sample), precise (inter assay CV = 6.9%, intra assay CV = 6.0%), sensitive (limit of detection < 1.7 micrograms of lipid per analysis), and accurate when calibrated with appropriate standards.
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Affiliation(s)
- Cody Pinger
- NOAA, National Marine Fisheries Service, Alaska Fisheries Science Center, Auke Bay Laboratories, 17109 Pt. Lena Loop Road, Juneau, Alaska, USA, 99801.
| | - Louise Copeman
- NOAA, National Marine Fisheries Service, Alaska Fisheries Science Center, Fisheries Behavioral Ecology Program, Hatfield Marine Science Center, Newport, Oregon, USA, 97365
- Cooperative Institute for Marine Ecosystem and Resources Studies (CIMERS), Oregon State University, Hatfield Marine Science Center, Newport, Oregon, USA, 97365
| | - Michelle Stowell
- Cooperative Institute for Marine Ecosystem and Resources Studies (CIMERS), Oregon State University, Hatfield Marine Science Center, Newport, Oregon, USA, 97365
| | - Bryan Cormack
- NOAA, National Marine Fisheries Service, Alaska Fisheries Science Center, Auke Bay Laboratories, 17109 Pt. Lena Loop Road, Juneau, Alaska, USA, 99801.
| | - Corey Fugate
- NOAA, National Marine Fisheries Service, Alaska Fisheries Science Center, Auke Bay Laboratories, 17109 Pt. Lena Loop Road, Juneau, Alaska, USA, 99801.
| | - Matthew Rogers
- NOAA, National Marine Fisheries Service, Alaska Fisheries Science Center, Auke Bay Laboratories, 17109 Pt. Lena Loop Road, Juneau, Alaska, USA, 99801.
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Walsh J, Reiss C. Lipid content and stable isotopes of zooplankton during five winters around the northern Antarctic Peninsula. Sci Data 2020; 7:380. [PMID: 33177524 PMCID: PMC7658225 DOI: 10.1038/s41597-020-00722-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Accepted: 10/09/2020] [Indexed: 11/25/2022] Open
Abstract
The Southern Ocean zooplankton community is diverse, yet most species are understudied, especially with respect to their overwinter feeding ecologies. Here we present body condition and trophic biomarker data (lipid content and stable isotopes of carbon and nitrogen) from 19 zooplankton species collected over five consecutive winters (August and September 2012-2016) around the northern Antarctic Peninsula. We report environmental data (percent sea-ice cover, sea-ice type, water temperature, salinity, and integrated chl-a) as well as species abundance data at each sampling location to provide additional context for interpreting the lipid and stable isotope data. For most species, these are the first winter measurements or time series of body condition, trophic position, and abundance in relation to environmental variables. These data are critical for evaluating changes in ecosystem structure and predator-prey relationships in a region of Antarctica that is warming faster than most other areas on Earth as a result of climate change.
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Affiliation(s)
- Jennifer Walsh
- Antarctic Ecosystem Research Division, Southwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, La Jolla, CA, 92037, USA.
| | - Christian Reiss
- Antarctic Ecosystem Research Division, Southwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, La Jolla, CA, 92037, USA
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Burgess KB, Broadhurst MK, Raoult V, Laglbauer BJL, Coleman MA, Bennett MB. Short- and long-term diets of the threatened longhorned pygmy devil ray, Mobula eregoodoo determined using stable isotopes. J Fish Biol 2020; 97:424-434. [PMID: 32415778 DOI: 10.1111/jfb.14381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 05/05/2020] [Accepted: 05/12/2020] [Indexed: 06/11/2023]
Abstract
Most mobulids are listed as near threatened to endangered. Nonetheless, effective conservation measures are hindered by knowledge gaps in their ecology and behaviour. In particular, few studies have assessed diets and trophic ecologies that could inform methods to avoid fishing mortality. Here, a shortfall in data for the longhorned pygmy devil ray, Mobula eregoodoo was addressed by describing temporal variability in dietary preferences using stable isotope analysis. During summer and autumn in 2017, five bather-protection gillnets were deployed off eastern Australia (29° S, 153.5° E). From the catches of these gillnets, 35 adult M. eregoodoo had liver, muscle and stomach contents sampled to determine δ13 C and δ15 N profiles. Analyses revealed that surface zooplankton and zooplanktivorous teleosts were important dietary components across short- and long-term temporal scales. Large quantities of undigested sandy sprat, Hyperlophus vittatus, in the stomachs of some specimens unequivocally confirm feeding on teleosts. A narrow isotopic niche and minimal isotopic overlap with reef manta rays, Mobula alfredi from the same geographic region in eastern Australia implies M. eregoodoo has unique and highly specialised resource use relative to other mobulids in the area. The species is clearly vulnerable to capture during inshore migrations, presumably where they feed on shallow-water shoaling teleosts. Female M. eregoodoo likely have a low annual reproductive output, so population recoveries from fishing-induced declines are likely to be slow. Measures to reduce the by catch of M. eregoodoo in local bather-protection gillnets, and artisanal fisheries more broadly, should be given priority.
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Affiliation(s)
- Katherine B Burgess
- School of Biomedical Sciences, The University of Queensland, St Lucia, Queensland, Australia
| | - Matt K Broadhurst
- New South Wales Government Department of Primary Industries, Fisheries Conservation Technology Unit, 2 Bay Drive, Charlesworth Bay, Coffs Harbour, Australia, Australia
- Marine and Estuarine Ecology Unit, School of Biological Sciences, The University of Queensland, St Lucia, Queensland, Australia
| | - Vincent Raoult
- School of Environmental and Life Sciences, University of Newcastle, Ourimbah, New South Wales, Australia
| | - Betty J L Laglbauer
- Department of Oceanography and Fisheries, University of the Azores, Horta, Portugal
| | - Melinda A Coleman
- Department of Primary Industries, New South Wales Fisheries, National Marine Science Centre, 2 Bay Drive, Coffs Harbour, NSW, 2450, Australia
| | - Michael B Bennett
- School of Biomedical Sciences, The University of Queensland, St Lucia, Queensland, Australia
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Yao C, He T, Xu Y, Ran S, Qian X, Long S. Mercury bioaccumulation in zooplankton and its relationship with eutrophication in the waters in the karst region of Guizhou Province, Southwest China. Environ Sci Pollut Res Int 2020; 27:8596-8610. [PMID: 31907806 DOI: 10.1007/s11356-019-07479-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Accepted: 12/19/2019] [Indexed: 06/10/2023]
Abstract
Zooplankton play an important role in the transfer of mercury (Hg) from the lower to upper trophic positions in the food chain. In this study, total mercury (THg) and methylmercury (MeHg) levels were measured in three size fractions of zooplankton collected from three reservoirs (Hongfeng, Baihua, and Aha Reservoir) and one wetland in karst areas to understand mercury accumulation in zooplankton from alkaline environments. The results showed that the alkaline waters had lower zooplankton MeHg levels (0.1 to 66.8 ng g-1) than most of the acidic waters reported. However, the zooplankton THg levels (6.3 to 494.9 ng g-1) were comparable. The macro-zooplankton (> 500 μm) had significantly higher THg and MeHg levels than meso-zooplankton (116 to 500 μm) in the three reservoirs at all seasons, which showed biomagnification of mercury in the food chain. The correlation between Hg in water and zooplankton and Hg in zooplankton of different sizes indicated that THg bioaccumulation in zooplankton was related to the THg levels in water; however, MeHg bioaccumulation in zooplankton was controlled by many other factors, such as their feeding and living habits. In the three reservoirs, the THg and MeHg concentrations in zooplankton decreased with increasing eutrophication. However, compared with the three reservoirs, Caohai Wetland, with large amounts of aquatic plants, had a much lower trophic level and higher MeHg content in water but much lower zooplankton MeHg levels and bioaccumulation factors (BAFs). The large amounts of plant residue might dilute mercury in the food chain, revealing that high primary production could result in lower Hg bioaccumulation, rather than only being influenced by nutrient levels.
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Affiliation(s)
- Cong Yao
- Key Laboratory of Karst Environment and Geohazard Prevention, Guizhou University, Guiyang, 550003, China
| | - Tianrong He
- Key Laboratory of Karst Environment and Geohazard Prevention, Guizhou University, Guiyang, 550003, China.
| | - Yiyuan Xu
- Key Laboratory of Karst Environment and Geohazard Prevention, Guizhou University, Guiyang, 550003, China
| | - Shu Ran
- Key Laboratory of Karst Environment and Geohazard Prevention, Guizhou University, Guiyang, 550003, China
| | - Xiaoli Qian
- The School of Resources and Environment Engineering, Guizhou University, Guiyang, 550003, China
| | - Shengxing Long
- Key Laboratory of Karst Environment and Geohazard Prevention, Guizhou University, Guiyang, 550003, China
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Murillo-Cisneros DA, O'Hara TM, Elorriaga-Verplancken FR, Sánchez-González A, Marín-Enríquez E, Marmolejo-Rodríguez AJ, Galván-Magaña F. Trophic Structure and Biomagnification of Total Mercury in Ray Species Within a Benthic Food Web. Arch Environ Contam Toxicol 2019; 77:321-329. [PMID: 31028414 DOI: 10.1007/s00244-019-00632-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 04/15/2019] [Indexed: 06/09/2023]
Abstract
Stable isotopes of C (δ13C) and N (δ15N) were used to explore the trophic structure and evaluate mercury (Hg) biomagnification in the food web of muscle of three commercially important ray species from the Pacific coast of Baja California Sur (PCBCS): the shovelnose guitarfish (Pseudobatos productus), banded guitarfish (Zapteryx exasperata), and bat ray (Myliobatis californica). The food web of these ray species predominately consisted of zooplankton, three species of fish, and five species of invertebrates. Mean δ15N values in all species ranged from 10.54 ± 0.18‰ in zooplankton to 17.84 ± 0.81‰ in the shovelnose guitarfish. Mean δ13C values ranged from - 22.05 ± 0.75‰ in the red crab to - 15.93 ± 0.78‰ in the bat ray. Mean total Hg concentration ([THg]) in all species ranged from 0.0009 ± 0.0002 mg kg-1 ww in zooplankton to 0.24 ± 0.19 mg kg-1 ww in the banded guitarfish. The food web magnification factor was 6.38 and significantly greater than 1.0. The present study describes [THg] biomagnification in the benthic food web of three ray species of the PCBCS. This provides an important baseline knowledge of the biomagnification dynamics and pathways of Hg in this environment for these multiple interacting species.
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Affiliation(s)
- Daniela A Murillo-Cisneros
- Centro Interdisciplinario de Ciencias Marinas, Instituto Politécnico Nacional, Av. I.P.N. s/n, Colonia Playa Palo de Santa Rita, Apartado Postal 592, C.P. 23000, La Paz, B.C.S, Mexico
| | - Todd M O'Hara
- Department of Veterinary Medicine, University of Alaska Fairbanks, 901 Koyukuk Dr, Fairbanks, 99775-7750, USA
| | - Fernando R Elorriaga-Verplancken
- Centro Interdisciplinario de Ciencias Marinas, Instituto Politécnico Nacional, Av. I.P.N. s/n, Colonia Playa Palo de Santa Rita, Apartado Postal 592, C.P. 23000, La Paz, B.C.S, Mexico
| | - Alberto Sánchez-González
- Centro Interdisciplinario de Ciencias Marinas, Instituto Politécnico Nacional, Av. I.P.N. s/n, Colonia Playa Palo de Santa Rita, Apartado Postal 592, C.P. 23000, La Paz, B.C.S, Mexico
| | - Emigdio Marín-Enríquez
- Centro de Investigaciones Biológicas del Noroeste, S.C. Av. IPN S/N, Col. Playa Palo de Santa Rita, 23096, La Paz, B.C.S, Mexico
| | - Ana J Marmolejo-Rodríguez
- Centro Interdisciplinario de Ciencias Marinas, Instituto Politécnico Nacional, Av. I.P.N. s/n, Colonia Playa Palo de Santa Rita, Apartado Postal 592, C.P. 23000, La Paz, B.C.S, Mexico
| | - Felipe Galván-Magaña
- Centro Interdisciplinario de Ciencias Marinas, Instituto Politécnico Nacional, Av. I.P.N. s/n, Colonia Playa Palo de Santa Rita, Apartado Postal 592, C.P. 23000, La Paz, B.C.S, Mexico.
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11
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Pancaldi F, Galván-Magaña F, González-Armas R, Soto-Jimenez MF, Whitehead DA, O'Hara T, Marmolejo-Rodríguez AJ, Vázquez-Haikin A, Páez-Osuna F. Mercury and selenium in the filter-feeding whale shark (Rhincodon typus) from two areas of the Gulf of California, Mexico. Mar Pollut Bull 2019; 146:955-961. [PMID: 31426243 DOI: 10.1016/j.marpolbul.2019.07.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 07/06/2019] [Accepted: 07/08/2019] [Indexed: 06/10/2023]
Abstract
Mercury and selenium were measured for first time in the endangered species whale shark (Rhyncodon typus) from two areas of the Gulf of California, Bahía Los Angeles (BLA) and Bahía La Paz (LAP) using dermal biopsies of seventy specimens. Additionally, nineteen zooplankton samples from LAP were analysed. Concentrations (ng/g, wet weight (ww)) in biopsies of BLA ranged from 1 to 40 for Hg and 100 to 680 for Se; while in LAP varied from 1 to 9 for Hg and 11 to 850 for Se. A positive correlation was found for Hg in BLA males biopsies with length. Hg and Se concentrations in the zooplankton from LAP were 1.6 ± 1.8 and 770 ± 930 ng/g, respectively. Hg biomagnification factor ranged from 0.8 to 5.3 in sharks. A molar excess of Se over Hg was found in the biopsies and the zooplankton.
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Affiliation(s)
- Francesca Pancaldi
- Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, Av. IPN s/n, 23096 La Paz, BCS, Mexico
| | - Felipe Galván-Magaña
- Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, Av. IPN s/n, 23096 La Paz, BCS, Mexico
| | - Rogelio González-Armas
- Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, Av. IPN s/n, 23096 La Paz, BCS, Mexico
| | - Martin F Soto-Jimenez
- Unidad Académica Mazatlán, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Mazatlán, Sinaloa 82040, Mexico
| | - Darren A Whitehead
- Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, Av. IPN s/n, 23096 La Paz, BCS, Mexico
| | - Todd O'Hara
- Department of Veterinary Medicine, University of Alaska, Fairbanks, Fairbanks, AK 99775-7000, United States
| | - Ana J Marmolejo-Rodríguez
- Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, Av. IPN s/n, 23096 La Paz, BCS, Mexico
| | - Abraham Vázquez-Haikin
- Asociación de Pesca Deportiva y Ecoturismo de Bahía de los Ángeles, Domicilio conocido Bahía de los Ángeles, Baja California 22980, Mexico
| | - Federico Páez-Osuna
- Unidad Académica Mazatlán, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Mazatlán, Sinaloa 82040, Mexico; Miembro de El Colegio de Sinaloa, Antonio Rosales 435 Poniente, Culiacán, Sinaloa, Mexico.
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12
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Cui S, Fu Q, An L, Yu T, Zhang F, Gao S, Liu D, Jia H. Trophic transfer of cyclic methyl siloxanes in the marine food web in the Bohai Sea, China. Ecotoxicol Environ Saf 2019; 178:86-93. [PMID: 30999184 DOI: 10.1016/j.ecoenv.2019.04.034] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Revised: 04/03/2019] [Accepted: 04/09/2019] [Indexed: 06/09/2023]
Abstract
Trophic transfer of cyclic methyl siloxanes (CMS) in aquatic ecosystems is an important criterion for assessing its environmental risks. This study researched the trophic transfer of four CMS (octamethylcyclotetrasiloxane (D4), decamethylcyclopentasiloxane (D5), dodecamethylcyclohexasiloxane (D6), and tetradecamethylcycloheptasiloxane (D7)) in marine food web from zooplankton up to seabirds in the Chinese Bohai Sea. In the zooplankton-invertebrate-fish-seabird based food web, the significant trophic magnifications were found for D4 to D6 (D4: R2 = 0.040, p < 0.05, D5: R2 = 0.26, p < 0.0001, D6: R2 = 0.071, p < 0.001), and the significant trophic dilution was found for D7 (R2 = 0.026 and p < 0.05). The trophic magnification factors (TMF) for D4 to D7 were 1.7 (95% confidence interval: 1.1-2.6), 3.5 (2.5-5.0), 1.8 (1.3-2.6), and 0.63 (95% CI: 0.40-0.99) respectively. In the zooplankton-invertebrate-fish based food web, both significant trophic magnification for D5 (R2 = 0.16, p < 0.0001, TMF = 3.0) and significant trophic dilution for D7 (R2 = 0.073, p < 0.01, TMF = 0.4) were found, but for D4 and D6, the trophic magnifications were not significant (D4: R2 = 0.010, p = 0.23, D6: R2 = 0.010, p = 0.23). The trophic transfer of the legacy contaminant BDE-47 and BDE-99 were also conducted as the benchmark chemicals and significant positive correlation was found. As far as we know, this is the first research on the trophic transfer of CMS in the zooplankton-invertebrate-fish-bird food chain which provided new insight of these compounds in the area.
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Affiliation(s)
- Song Cui
- International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China.
| | - Qiang Fu
- International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China
| | - Lihui An
- State Environmental Protection Key Laboratory of Estuarine and Coastal Research, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
| | - Ting Yu
- International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China
| | - Fuxiang Zhang
- International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China
| | - Shang Gao
- International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China
| | - Dong Liu
- International Joint Research Center for Persistent Toxic Substances (IJRC-PTS), School of Water Conservancy and Civil Engineering, Northeast Agricultural University, Harbin, Heilongjiang, 150030, China
| | - Hongliang Jia
- International Joint Research Centre for Persistent Toxic Substances (IJRC-PTS), College of Environmental Science and Engineering, Dalian Maritime University, Dalian, 116026, China.
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Poste AE, Hoel CS, Andersen T, Arts MT, Færøvig PJ, Borgå K. Terrestrial organic matter increases zooplankton methylmercury accumulation in a brown-water boreal lake. Sci Total Environ 2019; 674:9-18. [PMID: 31003089 DOI: 10.1016/j.scitotenv.2019.03.446] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 03/24/2019] [Accepted: 03/28/2019] [Indexed: 06/09/2023]
Abstract
Increases in terrestrial organic matter (tOM) transport from catchments to boreal lakes can affect methylmercury (MeHg) accumulation in aquatic biota both directly by increasing concentrations of aqueous MeHg, and indirectly through effects on MeHg bioavailability and on energy pathways in the lower food web. We carried out a detailed seasonal study of water chemistry, zooplankton diet, and MeHg accumulation in zooplankton in two lakes with contrasting tOM concentrations. Between-lake differences explained 51% of the variability in our water chemistry data, with no observed effect of season or sampling depth, contrary to our expectations. Higher tOM was correlated with higher aqueous Hg concentrations, lower areal pelagic primary productivity, and an increased contribution of terrestrial particles to pelagic particulate organic matter. Based on dietary marker analysis (δ13C, δ15N, and fatty acid [FA] composition), zooplankton diet was strongly linked to feeding mechanism, with dietary reliance on phytoplankton highest in the selective-feeding calanoid copepods, and lowest in filter feeding cladocerans. Zooplankton dietary reliance on phytoplankton and their concentrations of high-quality lipids, including polyunsaturated fatty acids, were higher in the clear-water lake than in the brown-water lake, where bacterial and terrestrial food sources were more prevalent. MeHg was highest in zooplankton from the brown-water lake, with highest concentrations in the 200-500 μm zooplankton size fraction for both lakes. Contrary to our expectations, there was no effect of season on zooplankton dietary markers or MeHg. Our results suggest that, overall, higher tOM results in higher MeHg concentrations in water and zooplankton, and reduces zooplankton dietary reliance on phytoplankton. Increased tOM thus leads to a decrease in the nutritional quality of zooplankton (i.e. higher MeHg concentrations, and lower concentrations of essential fatty acids), which may cascade up the food web with negative implications for higher trophic levels.
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Affiliation(s)
- Amanda E Poste
- Norwegian Institute for Water Research, Gaustadalléen 21, 0349 Oslo, Norway.
| | - Cathrine Skaar Hoel
- Department of Bioscience, University of Oslo, Blindernveien 31, 0371 Oslo, Norway
| | - Tom Andersen
- Department of Bioscience, University of Oslo, Blindernveien 31, 0371 Oslo, Norway
| | - Michael T Arts
- Department of Chemistry and Biology, Ryerson University, 350 Victoria Street, Toronto, Ontario M5B 2K3, Canada
| | - Per-Johan Færøvig
- Department of Bioscience, University of Oslo, Blindernveien 31, 0371 Oslo, Norway
| | - Katrine Borgå
- Department of Bioscience, University of Oslo, Blindernveien 31, 0371 Oslo, Norway.
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14
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Hsieh HY, Huang KC, Cheng JO, Lo WT, Meng PJ, Ko FC. Environmental effects on the bioaccumulation of PAHs in marine zooplankton in Gaoping coastal waters, Taiwan: Concentration, distribution, profile, and sources. Mar Pollut Bull 2019; 144:68-78. [PMID: 31180008 DOI: 10.1016/j.marpolbul.2019.04.048] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Revised: 04/18/2019] [Accepted: 04/19/2019] [Indexed: 06/09/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are toxic and ubiquitous in the environment and pose great risks. Bioaccumulation by plankton is the outset for PAHs entering marine food web. The long-term driving environmental factors for bioaccumulation of PAHs in zooplankton have not been well investigated. In this study, high variation of PAH concentrations in zooplankton (5 to 5440 ng g-1 dry weight) was found, with the highest PAH levels near the transect Kaohsiung Harbor. Precipitation significantly enhances the PAH concentration in zooplankton and affects the PAH distribution in the water column, indicating PAH input from terrestrial runoff. The sources of PAHs in the coastal waters are a mixture of petroleum and combustion. Biomass dilution dominates bioaccumulation of PAHs in zooplankton, especially for the dominant species, copepods. This study provides the first information on PAH bioaccumulation in zooplankton to understand PAH transport in the plankton food web in subtropical coastal waters.
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Affiliation(s)
- Hung-Yen Hsieh
- Graduate Institute of Marine Biology, National Dong Hwa University, Pingtung, Taiwan; National Museum of Marine Biology and Aquarium, Pingtung, Taiwan
| | - Kuang-Ching Huang
- Graduate Institute of Marine Biology, National Dong Hwa University, Pingtung, Taiwan
| | - Jing-O Cheng
- National Museum of Marine Biology and Aquarium, Pingtung, Taiwan
| | - Wen-Tseng Lo
- Institute of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung, Taiwan
| | - Pei-Jie Meng
- Graduate Institute of Marine Biology, National Dong Hwa University, Pingtung, Taiwan; National Museum of Marine Biology and Aquarium, Pingtung, Taiwan
| | - Fung-Chi Ko
- Graduate Institute of Marine Biology, National Dong Hwa University, Pingtung, Taiwan; National Museum of Marine Biology and Aquarium, Pingtung, Taiwan.
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15
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Hetherington ED, Kurle CM, Ohman MD, Popp BN. Effects of chemical preservation on bulk and amino acid isotope ratios of zooplankton, fish, and squid tissues. Rapid Commun Mass Spectrom 2019; 33:935-945. [PMID: 30730594 DOI: 10.1002/rcm.8408] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 12/31/2018] [Accepted: 01/31/2019] [Indexed: 06/09/2023]
Abstract
RATIONALE It is imperative to understand how chemical preservation alters tissue isotopic compositions before using historical samples in ecological studies. Specifically, although compound-specific isotope analysis of amino acids (CSIA-AA) is becoming a widely used tool, there is little information on how preservation techniques affect amino acid δ15 N values. METHODS We evaluated the effects of chemical preservatives on bulk tissue δ13 C and δ15 N and amino acid δ15 N values, measured by gas chromatography/isotope ratio mass spectrometry (GC/IRMS), of (a) tuna (Thunnus albacares) and squid (Dosidicus gigas) muscle tissues that were fixed in formaldehyde and stored in ethanol for 2 years and (b) two copepod species, Calanus pacificus and Eucalanus californicus, which were preserved in formaldehyde for 24-25 years. RESULTS Tissues in formaldehyde-ethanol had higher bulk δ15 N values (+1.4, D. gigas; +1.6‰, T. albacares), higher δ13 C values for D. gigas (+0.5‰), and lower δ13 C values for T. albacares (-0.8‰) than frozen samples. The bulk δ15 N values from copepods were not different those from frozen samples, although the δ13 C values from both species were lower (-1.0‰ for E. californicus and -2.2‰ for C. pacificus) than those from frozen samples. The mean amino acid δ15 N values from chemically preserved tissues were largely within 1‰ of those of frozen tissues, but the phenylalanine δ15 N values were altered to a larger extent (range: 0.5-4.5‰). CONCLUSIONS The effects of preservation on bulk δ13 C values were variable, where the direction and magnitude of change varied among taxa. The changes in bulk δ15 N values associated with chemical preservation were mostly minimal, suggesting that storage in formaldehyde or ethanol will not affect the interpretation of δ15 N values used in ecological studies. The preservation effects on amino acid δ15 N values were also mostly minimal, mirroring bulk δ15 N trends, which is promising for future CSIA-AA studies of archived specimens. However, there were substantial differences in phenylalanine and valine δ15 N values, which we speculate resulted from interference in the chromatographic resolution of unknown compounds rather than alteration of tissue isotopic composition due to chemical preservation.
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Affiliation(s)
- Elizabeth D Hetherington
- Division of Biological Sciences, University of California, San Diego, La Jolla, CA, USA
- Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA
| | - Carolyn M Kurle
- Division of Biological Sciences, University of California, San Diego, La Jolla, CA, USA
| | - Mark D Ohman
- Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA
| | - Brian N Popp
- Department of Earth Sciences, University of Hawaii at Manoa, Honolulu, HI, USA
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Wang T, Jin P, Wells ML, Trick CG, Gao K. Insensitivities of a subtropical productive coastal plankton community and trophic transfer to ocean acidification: Results from a microcosm study. Mar Pollut Bull 2019; 141:462-471. [PMID: 30955757 DOI: 10.1016/j.marpolbul.2019.03.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 02/28/2019] [Accepted: 03/02/2019] [Indexed: 06/09/2023]
Abstract
Ocean acidification (OA) has potential to affect marine phytoplankton in ways that are partly understood, but there is less knowledge about how it may alter the coupling to secondary producers. We investigated the effects of OA on phytoplankton primary production, and its trophic transfer to zooplankton in a subtropical eutrophic water (Wuyuan Bay, China) under present day (400 μatm) and projected end-of-century (1000 μatm) pCO2 levels. Net primary production was unaffected, although OA did lead to small decreases in growth rates. OA had no measurable effect on micro-/mesozooplankton grazing rates. Elevated pCO2 had no effect on phytoplankton fatty acid (FA) concentrations during exponential phase, but saturated FAs increased relative to the control during declining phase. FA profiles of mesozooplankton were unaffected. Our findings show that short-term exposure of plankton communities in eutrophic subtropical waters to projected end-of-century OA conditions has little effect on primary productivity and trophic linkage to mesozooplankton.
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Affiliation(s)
- Tifeng Wang
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361005, China
| | - Peng Jin
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361005, China; School of Environmental Science and Engineering, Guangzhou University, Guangzhou, 510006, China
| | - Mark L Wells
- School of Marine Sciences, University of Maine, Orono, ME 04469, USA
| | - Charles G Trick
- Department of Biology, Western University, London, Ontario, N6A 5B7, Canada
| | - Kunshan Gao
- State Key Laboratory of Marine Environmental Science, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361005, China.
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Weldrick CK, Trebilco R, Swadling KM. Can lipid removal affect interpretation of resource partitioning from stable isotopes in Southern Ocean pteropods? Rapid Commun Mass Spectrom 2019; 33:569-578. [PMID: 30635929 DOI: 10.1002/rcm.8384] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Revised: 12/29/2018] [Accepted: 01/03/2019] [Indexed: 06/09/2023]
Abstract
RATIONALE Stable isotope analysis (SIA) is a powerful tool to estimate dietary links between polar zooplankton. However, the presence of highly variable 12 C-rich lipids may skew estimations as they are depleted in 13 C relative to proteins and carbohydrates, consequently masking carbon signals from food sources. Lipid effects on pteropod-specific values requires examining, since accounting for lipids is rarely conducted among the few existing pteropod-related SIA studies. It is currently unclear whether lipid correction is necessary prior to SIA of pteropods. METHODS Whole bodies of three species of pteropods (Clio pyramidata f. sulcata, Clione limacina antarctica, and Spongiobranchaea australis) sampled from the Southern Ocean were lipid-extracted chemically to test the effects on δ13 C and δ15 N values (n = 38 individuals in total). We determined the average change in δ13 C values for each treatment, and compared this offset with those from published normalization models. We tested lipid correction effects on isotopic niche dispersion metrics to compare interpretations surrounding food web dynamics. RESULTS Pteropods with lipids removed had δ13 C values up to 4.5‰ higher than bulk samples. However, lipid extraction also produced higher δ15 N values than bulk samples. Isotopic niche overlaps between untreated pteropods and their potential food sources were significantly different from overlaps generated between lipid-corrected pteropods and their potential food sources. Data converted using several published normalization models did not reveal significant differences among various calculated niche metrics, including standard ellipse and total area. CONCLUSIONS We recommend accounting for lipids via chemical extraction or mathematical normalization before applying SIA to calculate ecological niche metrics, particularly for organisms with moderate to high lipid content such as polar pteropods. Failure to account for lipids may result in misinterpretations of niche dimensions and overlap and, consequently, trophic interactions.
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Affiliation(s)
- Christine K Weldrick
- Institute for Marine and Antarctic Studies, University of Tasmania, Private Bag 129, Hobart, Tasmania, 7001, Australia
- Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Private Bag 80, Hobart, Tasmania, 7001, Australia
| | - Rowan Trebilco
- Institute for Marine and Antarctic Studies, University of Tasmania, Private Bag 129, Hobart, Tasmania, 7001, Australia
- Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Private Bag 80, Hobart, Tasmania, 7001, Australia
| | - Kerrie M Swadling
- Institute for Marine and Antarctic Studies, University of Tasmania, Private Bag 129, Hobart, Tasmania, 7001, Australia
- Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Private Bag 80, Hobart, Tasmania, 7001, Australia
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Khaksar F, Manavi PN, Ardalan AA, Abedi E, Saleh A. Concentration of polycyclic aromatic hydrocarbons in zooplanktons of Bushehr coastal waters (north of the Persian Gulf). Mar Pollut Bull 2019; 140:35-39. [PMID: 30803654 DOI: 10.1016/j.marpolbul.2019.01.029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 01/14/2019] [Accepted: 01/15/2019] [Indexed: 06/09/2023]
Abstract
In this study, polycyclic aromatic hydrocarbon contents in zooplanktons of coastal waters of Bushehr Province at the north of the Persian Gulf were evaluated. Zooplankton samples were collected from 18 stations in both summer and winter (2017), and their polycyclic aromatic hydrocarbon contents were measured by gas chromatography-mass spectrometry after ultrasound-assisted extraction. Results revealed that among 16 compounds that were analyzed, only 7 compounds were recognizable at both seasons. Pyrene was the most common individual compound of polycyclic aromatic hydrocarbons, whereas acenaphthene was the least individual compound found at both seasons. Additionally, the highest content of the measured compounds in both summer and winter was 16.4-75.9 ng/g and 17.3-93.7 ng/g, respectively. On the basis of the obtained results, the total concentration of polycyclic aromatic hydrocarbons was significantly higher in winter than in summer (P < 0.05).
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Affiliation(s)
- Fatemeh Khaksar
- Dept of Marine Biology, Faculty of Marine Science and Technology, Islamic Azad University Branch of North Tehran, Tehran, Iran
| | - Parisa Nejatkhah Manavi
- Dept of Marine Biology, Faculty of Marine Science and Technology, Islamic Azad University Branch of North Tehran, Tehran, Iran.
| | - Aria Ashja Ardalan
- Dept of Marine Biology, Faculty of Marine Science and Technology, Islamic Azad University Branch of North Tehran, Tehran, Iran
| | - Ehsan Abedi
- Marine Science Research Center, Iranian National Institute for Oceanography and Atmospheric Science, Tehran, Iran
| | - Abolfazl Saleh
- Marine Science Research Center, Iranian National Institute for Oceanography and Atmospheric Science, Tehran, Iran
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Kapsi M, Tsoutsi C, Paschalidou A, Albanis T. Environmental monitoring and risk assessment of pesticide residues in surface waters of the Louros River (N.W. Greece). Sci Total Environ 2019; 650:2188-2198. [PMID: 30292989 DOI: 10.1016/j.scitotenv.2018.09.185] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 09/14/2018] [Accepted: 09/14/2018] [Indexed: 05/19/2023]
Abstract
Estuarine environments are being constantly stressed by new sources of pollution (e.g. pesticides) derived from activities of industry and intensive agriculture. The present study aims at quantify pesticides of three different categories (fungicides, herbicides and insecticides) in the Louros River (Epirus region, North-Western Greece). A monitoring study of 34 compounds was carried out in surface river waters from June 2011 until May 2012. Seven water sampling stations were established and 35 water samples were collected. A solid-phase extraction (SPE) method coupled with gas chromatography-mass spectrometry (GC-MS) and liquid chromatography-mass spectrometry (LC-MS), depending on the compound, was developed and validated. During the monitoring study 25 pesticides were detected (13 herbicides, 9 insecticides, 3 fungicides). The most commonly encountered pesticides were quizalofop-ethyl, trifluralin and pendimethaline. Tebufenpyrad was found in all sampling stations and seasons, with the highest concentrations of 0.330 μg/L at Tsopeli Lagoon exceeding the rather low concentrations reported nationwide. Regarding the environmental risk due to the presence of target compounds in surface waters, this was estimated by calculating risk quotients (RQs) for different aquatic organisms (algae, zooplankton and fish). The results denoted a possible threat for the aquatic environment, rendering in this way the RQ method as a useful screening tool. In any case, further extensive study is needed for acetochlor, pirimiphos-methyl, endosulfan-a and azinphos-ethyl in order to better correlate their occurrence and potential toxic effects in aquatic life and humans.
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Affiliation(s)
- Margarita Kapsi
- Laboratory of Analytical Chemistry, Department of Chemistry, University of Ioannina, Panepistimioupolis, Ioannina 45110, Greece
| | - Charoula Tsoutsi
- Laboratory of Analytical Chemistry, Department of Chemistry, University of Ioannina, Panepistimioupolis, Ioannina 45110, Greece
| | - Anastasia Paschalidou
- Department of Forestry and Management of the Environment and Natural Resources, Democritus University of Thrace, 68200, Greece
| | - Triantafyllos Albanis
- Laboratory of Analytical Chemistry, Department of Chemistry, University of Ioannina, Panepistimioupolis, Ioannina 45110, Greece.
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Maciel OLC, Almeida EV. Mesozooplankton characterization surrounding anthropogenic sewage inputs in the southeastern eutrophic Brazilian estuary of Guanabara Bay. Mar Pollut Bull 2019; 138:511-519. [PMID: 30660301 DOI: 10.1016/j.marpolbul.2018.12.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2018] [Revised: 12/04/2018] [Accepted: 12/06/2018] [Indexed: 06/09/2023]
Abstract
Zooplankton assembly was characterized during the spring tide near a submarine outfall that discharges raw sewage directly into the southeastern portion of Guanabara Bay, near the Niterói, a highly urbanized center. The rain period directly influences water surface temperature and salinity, as has been previously observed in this bay. Dissolved oxygen (DO) and biochemical oxygen demand (BOD) were within the concentrations stipulated by the Brazilian legislation. The low chlorophyll a values observed herein may be associated with a nutritional imbalance to which phytoplankton may be subjected, observed through the carotenoid/chlorophyll ratio, which probably reflects zooplankton community composition. Twenty major zooplanktonic taxonomic groups were recorded, with a predominance of holoplanktonic taxa, mainly copepods. Mean zooplankton density and composition were in agreement with other studies in the region, however, these community characteristics at each of the sampling stations appear to be related to the urbanization degrees of each Niterói neighborhood.
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Affiliation(s)
- O L C Maciel
- Fundação Instituto da Pesca do Estado do Rio de Janeiro (FIPERJ), CEP: 24030-020 Niterói, RJ, Brazil.
| | - E V Almeida
- Departamento de Zoologia, Instituto de Biologia, Universidade Federal do Rio de Janeiro (UFRJ), CEP: 21941-590 Rio de Janeiro, RJ, Brazil
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21
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Abstract
Release of silver ions (Ag+) is often regarded as the major cause for silver nanoparticle (AgNP) toxicity toward aquatic organisms. Nevertheless, differentiating AgNPs and Ag+ in a complicated biological matrix and their dissolution remains a bottleneck in our understanding of AgNP behavior in living organisms. Here, we directly visualized and quantified the time-dependent release of Ag+ from different sized AgNPs in an in vivo model zooplankton ( Daphnia magna). A fluorogenic Ag+ sensor was used to selectively detect and localize the released Ag+ in daphnids. We demonstrated that the ingested AgNPs were dissoluted to Ag+, which was heterogeneously distributed in daphnids with much higher concentration in the anterior gut. At dissolution equilibrium, a total of 8.3-9.7% of ingested AgNPs was released as Ag+ for 20 and 60 nm AgNPs. By applying a pH sensor, we further showed that the dissolution of AgNPs was partially related to the heterogeneous distribution of pH in different gut sections of daphnids. Further, Ag+ was found to cross the gills and enter the daphnids, which may be a potential pathway leading to AgNP toxicity. Our findings provided fundamental knowledge about the transformation of AgNPs and distribution of Ag+ in daphnids.
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Affiliation(s)
- Neng Yan
- Department of Ocean Science, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, and Marine Environmental Laboratory , HKUST Shenzhen Research Institute , Shenzhen 518057 , China
| | - Ben Zhong Tang
- Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction , HKUST , Clear Water Bay , Kowloon , Hong Kong , China
| | - Wen-Xiong Wang
- Department of Ocean Science, The Hong Kong University of Science and Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, and Marine Environmental Laboratory , HKUST Shenzhen Research Institute , Shenzhen 518057 , China
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22
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Dobaradaran S, Nabipour I, Ramavandi B, Saeedi R, Spitz J, Izadi A, Abedi E, Janahmadi M. Trace metals in zooplankton from the northern Persian Gulf. Mar Pollut Bull 2018; 137:9-11. [PMID: 30503492 DOI: 10.1016/j.marpolbul.2018.10.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 09/25/2018] [Accepted: 10/02/2018] [Indexed: 06/09/2023]
Abstract
This work is the first study on the spatial and temporal distribution of metals in zooplankton collected along the Persian Gulf. The rank order distribution of metals in terms of their overall average concentration in the zooplankton was observed to be Fe > Zn > Cu > Cd > Ni > Cr > Pb > Co > V. No clear pattern and no statistical differences were detected among the areas and the sampling stations. The highest concentrations of Cu, Zn, and Pb were observed in summer while the highest concentration levels of Fe and Ni were observed in winter. The highest mean zooplankton metal concentration level was found to be Fe with 10.42 μg/g (in winter) and the lowest levels were for V (in spring and summer) and Co (in winter), both of which had a level of 0.01 μg/g. The results can be used to establish base-line data for the trace metal content of zooplankton in the northern region of the Persian Gulf.
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Affiliation(s)
- Sina Dobaradaran
- Systems Environmental Health and Energy Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran; Department of Environmental Health Engineering, Faculty of Health, Bushehr University of Medical Sciences, Bushehr, Iran; The Persian Gulf Marine Biotechnology Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran.
| | - Iraj Nabipour
- The Persian Gulf Marine Biotechnology Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Bahman Ramavandi
- Systems Environmental Health and Energy Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran; Department of Environmental Health Engineering, Faculty of Health, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Reza Saeedi
- School of Public Health and Safety, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Jörg Spitz
- Akademie für menschliche Medizin GmbH, Krauskopfallee 27, 65388 Schlangenbad, Germany
| | - Azade Izadi
- Department of Environmental Health Engineering, Faculty of Health, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Ehsan Abedi
- Iranian National Institute for Oceanography and Atmospheric Science, Persian Gulf Center, Bushehr, Iran
| | - Maryam Janahmadi
- Systems Environmental Health and Energy Research Center, The Persian Gulf Biomedical Sciences Research Institute, Bushehr University of Medical Sciences, Bushehr, Iran
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Sun X, Liang J, Zhu M, Zhao Y, Zhang B. Microplastics in seawater and zooplankton from the Yellow Sea. Environ Pollut 2018; 242:585-595. [PMID: 30014936 DOI: 10.1016/j.envpol.2018.07.014] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 07/03/2018] [Accepted: 07/04/2018] [Indexed: 05/12/2023]
Abstract
Marine plastic pollution is a worldwide problem. Microplastics (MPs) are the predominant form of marine plastic debris, a form small enough to be ingested by and potentially harm marine organisms. It is urgent to develop ecologically relevant metrics for the risk assessment of MPs based on in situ data, especially for coastal areas. For the first time, we performed a comprehensive study of the characteristics of MPs in seawater and zooplankton in the Yellow Sea. For MPs in seawater, the average concentration is 0.13 ± 0.20 pieces/m3, dominated by fragments (42%). The average size is 3.72 ± 4.70 mm, with the most frequent size appearing at 1200 μm. The major polymer types are polypropylene and polyethylene, accounting for 88.13% in total. The distribution of MPs in seawater is patchy, with high MP concentrations close to the coastal cities. The average concentration of MPs in 11 total zooplankton groups is 12.24 ± 25.70 pieces/m3. The average size is 154.62 ± 152.90 μm, with 90% being <500 μm. Fiber is the dominant shape of MPs found in zooplankton, accounting for 46%, but the composition of the polymer type is diverse. The retention of MPs in zooplankton depends on the taxa and their abundance in the Yellow Sea. Siphonophorea, Copepoda, Euphausiacea and Amphipoda are the main repositories compared to other groups, achieving 3.57, 2.44, 1.41 and 1.36 pieces/m3, respectively. The high concentration area of MPs in zooplankton appeared near the adjacent waters of the Yangtze estuary. These results prove that zooplankton act as a repository for MPs in coastal waters. The retention of MPs in zooplankton is recommended as a key index for further ecological risk assessment of MPs.
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Affiliation(s)
- Xiaoxia Sun
- Jiaozhou Bay National Marine Ecosystem Research Station, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao, 266071, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Center for Ocean Mega Science, Chinese Academy of Sciences, Qingdao, 266071, China.
| | - Junhua Liang
- Jiaozhou Bay National Marine Ecosystem Research Station, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao, 266071, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China
| | - Mingliang Zhu
- Jiaozhou Bay National Marine Ecosystem Research Station, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao, 266071, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China
| | - Yongfang Zhao
- Jiaozhou Bay National Marine Ecosystem Research Station, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao, 266071, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China
| | - Bo Zhang
- Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China
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Sun X, Liu T, Zhu M, Liang J, Zhao Y, Zhang B. Retention and characteristics of microplastics in natural zooplankton taxa from the East China Sea. Sci Total Environ 2018; 640-641:232-242. [PMID: 29859439 DOI: 10.1016/j.scitotenv.2018.05.308] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 05/24/2018] [Accepted: 05/24/2018] [Indexed: 05/17/2023]
Abstract
The ubiquitous presence and persistence of microplastics (MPs) in aquatic environments have become of particular concern in recent years. Biological interactions are among the key processes that affect the impact and fate of MPs in the oceans. Zooplankton is one of the most sensitive taxa because their prey is approximately the same size as MPs. However, the status of MPs in zooplankton within natural marine environments remains largely unknown. By focusing on zooplankton in the East China Sea, the characteristics, bioaccumulated concentration, and retention of MPs for 10 zooplankton groups were systematically studied. Three types of MPs were found in zooplankton: fibres, pellets, and fragments. The fibres (54.6%) were more common than the other two types. The average lengths of the fibres, pellets, and fragments were 295.2 ± 348.6 μm, 20.3 ± 11.0 μm, and 82.4 ± 80.5 μm, respectively. Nineteen polymers were detected in the zooplankton via the Thermo Scientific Nicolet iN10 Infrared Microscope. Polymerized oxidized organic material and polyester were dominant, accounting for 35.9% and 25.6% of the polymers, respectively. The bioaccumulated concentration of MPs in the 10 zooplankton taxa varied from 0.13 pieces/zooplankton for Copepoda to 0.35 pieces/zooplankton for Pteropoda. The bioaccumulated concentration was negatively correlated with the abundance of zooplankton, showing a significant biological dilution effect. The bioaccumulated concentration was also influenced by the feeding mode of zooplankton, showing a trend of omnivorous > carnivorous > herbivorous. High retention of MPs was found in the zooplankton community of the East China Sea, achieving 19.7 ± 22.4 pieces/m3. This is much higher than the MP retention in zooplankton from other reported sea areas. By revealing the characteristics and retention of MPs in the natural zooplankton taxa from the East China Sea, this research identified the influence that MPs have on zooplankton in a typical coastal environment. This information can be utilized for subsequent controlled experiments and risk assessments.
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Affiliation(s)
- Xiaoxia Sun
- Jiaozhou Bay National Marine Ecosystem Research Station, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China; University of Chinese Academy of Sciences, Beijing 100049, China; Center for Ocean Mega Science, Chinese Academy of Sciences, Qingdao 266071, China.
| | - Tao Liu
- Jiaozhou Bay National Marine Ecosystem Research Station, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Mingliang Zhu
- Jiaozhou Bay National Marine Ecosystem Research Station, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China
| | - Junhua Liang
- Jiaozhou Bay National Marine Ecosystem Research Station, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China
| | - Yongfang Zhao
- Jiaozhou Bay National Marine Ecosystem Research Station, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China
| | - Bo Zhang
- Laboratory for Marine Ecology and Environmental Science, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China; CAS Key Laboratory of Marine Ecology and Environmental Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
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25
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Harding G, Dalziel J, Vass P. Bioaccumulation of methylmercury within the marine food web of the outer Bay of Fundy, Gulf of Maine. PLoS One 2018; 13:e0197220. [PMID: 30011281 PMCID: PMC6047777 DOI: 10.1371/journal.pone.0197220] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Accepted: 04/27/2018] [Indexed: 12/02/2022] Open
Abstract
Mercury and methylmercury were measured in seawater and biota collected from the outer Bay of Fundy to better document mercury bioaccumulation in a temperate marine food web. The size of an organism, together with δ13 C and δ15 N isotopes, were measured to interpret mercury levels in biota ranging in size from microplankton (25μm) to swordfish, dolphins and whales. Levels of mercury in seawater were no different with depth and not elevated relative to upstream sources. The δ13 C values of primary producers were found to be inadequate to specify the original energy source of various faunas, however, there was no reason to separate the food web into benthic, demersal and pelagic food chains because phytoplankton has been documented to almost exclusively fuel the ecosystem. The apparent abrupt increase in mercury content from "seawater" to phytoplankton, on a wet weight basis, can be explained from an environmental volume basis by the exponential increase in surface area of smaller particles included in "seawater" determinations. This physical sorption process may be important up to the macroplankton size category dominated by copepods according to the calculated biomagnification factors (BMF). The rapid increase in methylmercury concentration, relative to the total mercury, between the predominantly phytoplankton (<125μm) and the zooplankton categories is likely augmented by gut microbe methylation. Further up the food chain, trophic transfer of methylmercury dominates resulting in biomagnification factors greater than 10 in swordfish, Atlantic bluefin tuna, harbour porpoise, Atlantic white-sided dolphin and common thresher shark. The biomagnification power of the northern Gulf of Maine ecosystem is remarkably similar to that measured in tropical, subtropical, other temperate and arctic oceanic ecozones.
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Affiliation(s)
- Gareth Harding
- Bedford Institute of Oceanography, Department of Fisheries and Oceans, Dartmouth, Nova Scotia, Canada
| | - John Dalziel
- Environment Canada, Dartmouth, Nova Scotia, Canada
| | - Peter Vass
- Bedford Institute of Oceanography, Department of Fisheries and Oceans, Dartmouth, Nova Scotia, Canada
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26
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Barrett PM, Hull EA, King CE, Burkart K, Ott KA, Ryan JN, Gawel JE, Neumann RB. Increased exposure of plankton to arsenic in contaminated weakly-stratified lakes. Sci Total Environ 2018; 625:1606-1614. [PMID: 29996457 PMCID: PMC6044462 DOI: 10.1016/j.scitotenv.2017.12.336] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 12/28/2017] [Accepted: 12/29/2017] [Indexed: 05/05/2023]
Abstract
Arsenic, a priority Superfund contaminant and carcinogen, is a legacy pollutant impacting aquatic ecosystems in urban lakes downwind of the former ASARCO copper smelter in Ruston, WA, now a Superfund site. We examined the mobility of arsenic from contaminated sediments and arsenic bioaccumulation in phytoplankton and zooplankton in lakes with varying mixing regimes. In lakes with strong seasonal thermal stratification, high aqueous arsenic concentrations were limited to anoxic bottom waters that formed during summer stratification, and arsenic concentrations were low in oxic surface waters. However, in weakly-stratified lakes, the entire water column, including the fully oxic surface waters, had elevated concentrations of arsenic (up to 30μgL-1) during the summer. We found enhanced trophic transfer of arsenic through the base of the aquatic food web in weakly-stratified lakes; plankton in these lakes accumulated up to an order of magnitude more arsenic on multiple sampling days than plankton in stratified lakes with similar levels of contamination. We posit that greater bioaccumulation in weakly-stratified lakes was due to elevated arsenic in oxic waters. Aquatic life primarily inhabits oxic waters and in the oxic water column of weakly-stratified lakes arsenic was speciated as arsenate, which is readily taken up by phytoplankton because of its structural similarities to phosphate. Our study indicates that mobilization of arsenic from lake sediments into overlying oxic water columns in weakly-stratified lakes leads to increased arsenic exposure and uptake at the base of the aquatic food web.
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Affiliation(s)
- P M Barrett
- Department of Civil and Environmental Engineering, University of Washington, Seattle, WA 98195, United States.
| | - E A Hull
- Environmental Science and Studies, School of Interdisciplinary Arts and Sciences, University of Washington Tacoma, Tacoma, WA 98402, United States
| | - C E King
- Environmental Science and Studies, School of Interdisciplinary Arts and Sciences, University of Washington Tacoma, Tacoma, WA 98402, United States
| | - K Burkart
- Environmental Science and Studies, School of Interdisciplinary Arts and Sciences, University of Washington Tacoma, Tacoma, WA 98402, United States
| | - K A Ott
- Civil, Environmental, and Architectural Engineering, University of Colorado Boulder, CO 80309, United States
| | - J N Ryan
- Civil, Environmental, and Architectural Engineering, University of Colorado Boulder, CO 80309, United States
| | - J E Gawel
- Environmental Science and Studies, School of Interdisciplinary Arts and Sciences, University of Washington Tacoma, Tacoma, WA 98402, United States
| | - R B Neumann
- Department of Civil and Environmental Engineering, University of Washington, Seattle, WA 98195, United States
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Zhou S, Pan Y, Zhang L, Xue B, Zhang A, Jin M. Biomagnification and enantiomeric profiles of organochlorine pesticides in food web components from Zhoushan Fishing Ground, China. Mar Pollut Bull 2018; 131:602-610. [PMID: 29886987 DOI: 10.1016/j.marpolbul.2018.04.055] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 04/22/2018] [Accepted: 04/24/2018] [Indexed: 06/08/2023]
Abstract
Trophodynamics and chiral signatures of organochlorine pesticides (OCPs), including dichlorodiphenyltrichloroethanes (DDTs), hexachlorocyclohexanes (HCHs), and chlordanes in a food web from Zhoushan Fishing Ground, China, were studied. Residues of OCPs in all teleost fishes were within food safety levels. Strong positive correlations were found between trophic levels (TLs) and wet weight concentrations of target chemicals, with trophic magnification factors (TMFs) from 4.17 to 9.77. Lipid contents and TLs significantly correlated, which indirectly affect the bioaccumulation processes of OCPs. The consistently racemic EF values of α-HCH, as well as invariability of the relative proportions of HCH isomers in different marine species implied that HCHs in animals originate directly from the surrounding environment. However, in vivo biotransformation and/or elimination of o,p'-DDT cannot be precluded. TMFs of the individual enantiomers further suggest that the influence of achiral biotransformation is too minor to induce enantioselective biomagnification of chiral OCPs through the studied food web.
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Affiliation(s)
- Shanshan Zhou
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Yongqiang Pan
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Lina Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Bin Xue
- Key Laboratory of Marine Ecosystem and Biogeochemistry, The Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310012, China
| | - Anping Zhang
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Meiqing Jin
- College of Materials Science and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
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28
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Alekseenko E, Thouvenin B, Tronczyński J, Carlotti F, Garreau P, Tixier C, Baklouti M. Modeling of PCB trophic transfer in the Gulf of Lions; 3D coupled model application. Mar Pollut Bull 2018; 128:140-155. [PMID: 29571357 DOI: 10.1016/j.marpolbul.2018.01.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 01/05/2018] [Indexed: 06/08/2023]
Abstract
3D coupled modeling approach is used for the PCB dispersion assessment in the Gulf of Lion and its transfer to zooplankton via biogeochemical processes. PCB budgets and fluxes between the different species of PCB: dissolved, particulate, biosorbed on plankton, assimilated by zooplankton, which are governed by different processes: adsorption/desorption, bacteria and plankton mortality, zooplankton excretion, grazing, mineralization, volatilization have been estimated. Model outputs were compared with the available in situ data. It was found that the Rhone River outflows play an important role in the organism contamination in the coastal zone, whereas the atmospheric depositions are rather more important in the offshore zones. The transfer of the available contaminant to bacteria and phytoplankton species is mainly related to the biomass present in the water column. Absorption fluxes (grazing) to zooplankton are rather higher than the passive sorption fluxes, which are themselves also linked to the sorption coefficient.
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Affiliation(s)
- E Alekseenko
- P.P. Shirshov Institute of Oceanography, Russian Academy of Sciences (SIO RAS), Nakhimosvskiy 36, 117218 Moscow, Russia; Laboratoire des Sciences du Climat et de l'Environnement (LSCE/IPSL), CEA Saclay, Gif-sur-Yvette 91191, France.
| | - B Thouvenin
- IFREMER, Dynamiques des Ecosystèmes Côtiers, Z.I. Pointe du Diable, BP70, Plouzané 29280, France
| | - J Tronczyński
- IFREMER, RBE/BE/LBCO, B.P. 21105, Nantes 44311, France
| | - F Carlotti
- Aix-Marseille Université, Université de Toulon, CNRS/INSU, IRD, MIO, UM 110, Marseille, Cedex 09 13288, France
| | - P Garreau
- IFREMER, Univ. Brest, CNRS UMR 6523, IRD, Laboratoire d'Océanographie Physique et Spatiale (LOPS), IUEM, 29280 Brest, France
| | - C Tixier
- IFREMER, RBE/BE/LBCO, B.P. 21105, Nantes 44311, France
| | - M Baklouti
- Aix-Marseille Université, Université de Toulon, CNRS/INSU, IRD, MIO, UM 110, Marseille, Cedex 09 13288, France
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Wang Q, Chen M, Shan G, Chen P, Cui S, Yi S, Zhu L. Bioaccumulation and biomagnification of emerging bisphenol analogues in aquatic organisms from Taihu Lake, China. Sci Total Environ 2017; 598:814-820. [PMID: 28458198 DOI: 10.1016/j.scitotenv.2017.04.167] [Citation(s) in RCA: 117] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2017] [Revised: 04/21/2017] [Accepted: 04/21/2017] [Indexed: 05/26/2023]
Abstract
Due to regulations on bisphenol A (BPA) in many countries, a variety of bisphenol analogues are being widely manufactured and applied. However, there is a big knowledge gap on bioaccumulation and biomagnification of these emerging bisphenols in aquatic organisms. The bioaccumulation and magnification of nine bisphenol analogues in aquatic organisms at different trophic levels collected from Taihu Lake, China, were evaluated. The total concentrations of the nine bisphenols in the lake waters were in the range of 49.7-3480ng/L (mean, 389ng/L). BPA, bisphenol AF (BPAF) and bisphenol S (BPS) were the most predominant analogues in the water. The mean natural logarithm bioaccumulation factor (log BAFs) of BPAF, bisphenol C (BPC), bisphenol Z (BPZ) and bisphenol E (BPE) were greater than BPA, and there was a significantly positive correlation between log BAFs of the biphenols and their octanol-water partition coefficients (log Kow). The trophic magnification factors of BPAF, BPC and BPZ were 2.52, 2.69 and 1.71, respectively, suggesting that they had the potential to biomagnify in the food web. The results of this study call for further investigations on risk assessment of these emerging pollutants in the environment.
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Affiliation(s)
- Qiang Wang
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Meng Chen
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Guoqiang Shan
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Pengyu Chen
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Shuo Cui
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Shujun Yi
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Lingyan Zhu
- Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China; College of Natural Resources and Environment, Northwest A&F University, Yangling, Shanxi 712100, China.
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Thompson GA, Volpedo AV. Presence of trace elements in the silverside Odontesthes argentinensis. Mar Pollut Bull 2017; 123:127-132. [PMID: 28893401 DOI: 10.1016/j.marpolbul.2017.09.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 09/05/2017] [Accepted: 09/06/2017] [Indexed: 06/07/2023]
Abstract
The silverside Odontesthes argentinensis is an economically significant resource for commercial fisheries in South America. We evaluated the presence of trace elements in the stomach content and fish tissues (muscle and otoliths) of O. argentinensis. In addition, we assessed the presence of trace elements in its prey (zooplankton) and in seawater in a coastal temperate area. The most abundant trace elements found in the water, zooplankton, stomach content, and fish tissues (muscle and otoliths) constituted of Ba, Mn, Sr and Zn, while Cd, Cu and Pb were observed in lower concentrations. We concluded that O. argentinensis specimens captured from the environment, within the length range analyzed for muscle samples (total length: <21cm), are deemed fit for human consumption because the concentrations of trace elements mostly meet the standards established in the Argentine Food Code. The information obtained in this study is vital for O. argentinensis farming in closed systems.
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Affiliation(s)
- Gustavo A Thompson
- CONICET, Universidad de Buenos Aires, Instituto de Investigaciones en Producción Animal (INPA), Buenos Aires, Argentina.
| | - Alejandra V Volpedo
- CONICET, Universidad de Buenos Aires, Instituto de Investigaciones en Producción Animal (INPA), Buenos Aires, Argentina
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Hipfner JM, Studholme KR, Galbraith M. Low incidence of plastics in food loads delivered to nestlings by a zooplanktivorous seabird over a 21-year period. Mar Pollut Bull 2017; 121:320-322. [PMID: 28625618 DOI: 10.1016/j.marpolbul.2017.06.028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 06/07/2017] [Accepted: 06/08/2017] [Indexed: 05/25/2023]
Abstract
We quantified the amount of plastic found in food loads delivered to nestlings in Cassin's Auklet (Ptychoramphus aleuticus), a small, zooplanktivorous seabird, on Triangle Island, British Columbia, in 1996-2016. The density of plastic in surrounding waters is moderately high, yet few food loads contained any plastic (3 of 850), and none more than two pieces. That result accords well with previous observations on the other four North Pacific auklets (Aethia spp.), leading us to conclude that true auklets rarely transfer plastic to nestlings. However, many hatch-year Cassin's Auklets found dead in coastal British Columbia, Washington and Oregon during the mass mortality event of fall and winter 2014-15 had plastic in their ventriculi. We suggest that these plastic particles would have been obtained at sea after fledging, perhaps while the birds transited south through a region of high plastic density off the west coast of Vancouver Island, Washington and Oregon.
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Affiliation(s)
- J M Hipfner
- Wildlife Research Division, Environment and Climate Change Canada, RR#1 5421 Robertson Road, Delta, BC V4K 3N2, Canada.
| | - K R Studholme
- Department of Biology, Dalhousie University, 1355 Oxford Street, Halifax, NS B3H 4R2, Canada
| | - M Galbraith
- Institute of Ocean Sciences, Fisheries and Oceans Canada, 9860 West Saanich Road, Sidney, BC V8L 4B2, Canada
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Kitamura M, Honda MC, Hamajima Y, Kumamoto Y, Aoyama M, Kawakami H, Aono T, Fukuda M, Mino Y. Temporal changes in radiocesium contamination derived from the Fukushima Dai-ichi Nuclear Power Plant accident in oceanic zooplankton in the western North Pacific. J Environ Radioact 2017; 172:163-172. [PMID: 28380392 DOI: 10.1016/j.jenvrad.2017.03.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Accepted: 03/26/2017] [Indexed: 06/07/2023]
Abstract
We investigated temporal changes of the contamination of oceanic zooplankton with radiocesium (134Cs and 137Cs) derived from the Fukushima Dai-ichi Nuclear Power Plant accident one month to three years after the accident at subarctic and subtropical stations (1900 and 900-1000 km from the plant, respectively) in the western North Pacific. The maximum activity concentrations of 137Cs in zooplankton were two orders of magnitude higher than the pre-accident level. In the first four months after the accident, the activity concentrations of radiocesium in subtropical zooplankton decreased rapidly, but no similar change was observed at the subarctic station. The radiocesium derived from atmospheric deposition rapidly decreased as a result of seawater mixing. Thus, most of the subtropical zooplankton (with short lifespans) that had taken up radiocesium just after the accident were probably replaced by newly hatched zooplankton within four months of the accident, whereas subarctic zooplankton (with long lifespans) that were highly contaminated with radiocesium were still alive four months after the accident. By the end of the study, 137Cs activity concentrations in subtropical zooplankton were still high, whereas the activity concentrations in subarctic zooplankton had decreased to nearly the pre-accident level. The former concentrations were probably influenced by a secondary supply of radiocesium via advection of subtropical mode water that was highly contaminated with Fukushima-derived radiocesium. Unexpectedly, at the subarctic station, the radiocesium activity concentrations in surface zooplankton were lower than those in subsurface zooplankton, whereas the opposite relationship was observed in surface and subsurface seawater. Because carnivores predominated in the subsurface zooplankton community, we hypothesize that the higher radiocesium activity concentrations in subsurface zooplankton were influenced by bioaccumulation. We conclude that radiocesium activity concentrations in zooplankton are influenced not only by the supply of radiocesium to the environment but also by the characteristics of the zooplankton community.
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Affiliation(s)
- Minoru Kitamura
- Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2-15 Natsushima, Yokosuka, Kanagawa 237-0061, Japan.
| | - Makio C Honda
- Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2-15 Natsushima, Yokosuka, Kanagawa 237-0061, Japan
| | - Yasunori Hamajima
- Low Level Radioactivity Laboratory, Institute of Nature and Environmental Technology, Kanazawa University, Nomi, Ishikawa 923-1224, Japan
| | - Yuichiro Kumamoto
- Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2-15 Natsushima, Yokosuka, Kanagawa 237-0061, Japan
| | - Michio Aoyama
- Institute of Environmental Radioactivity, Fukushima University, 1-1 Kanayagawa, Fukushima 960-1296, Japan
| | - Hajime Kawakami
- Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2-15 Natsushima, Yokosuka, Kanagawa 237-0061, Japan
| | - Tatsuo Aono
- National Institute of Radiological Sciences, National Institute for Quantum and Radiological Science and Technology (QST-NIRS), 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan
| | - Miho Fukuda
- National Institute of Radiological Sciences, National Institute for Quantum and Radiological Science and Technology (QST-NIRS), 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan
| | - Yoshihisa Mino
- Institute for Space-Earth Environmental Research, Nagoya University, Chikusa-ku, Nagoya 464-8601, Japan
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Aya FA, Kudo I. Nitrogen stable isotopes reveal age-dependent dietary shift in the Japanese scallop Mizuhopecten yessoensis. Isotopes Environ Health Stud 2017; 53:80-90. [PMID: 27225746 DOI: 10.1080/10256016.2016.1186024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2015] [Accepted: 03/04/2016] [Indexed: 06/05/2023]
Abstract
Ontogenetic niche shifts in diet are a consequence of changes in body size or resource partitioning between age classes. To better resolve the feeding patterns of the Japanese scallop Mizuhopecten yessoensis, we examined the relative importance of age and size in the diet of this species using stable isotope ratios of carbon (δ13C) and nitrogen (δ15N) from 2006 to 2009. Contribution of food sources was quantified using an isotope mixing model by comparing the muscle tissue isotope ratios to those of suspended particulate organic matter (SPOM) and their zooplankton prey (e.g. micro- and meso-zooplankton). Unlike the δ13C values, which remained constant with age and size, muscle δ15N values were more positively correlated with age accounting for 69 % of variations than size with only 46 %. Increasing 15N values with age suggested that shifts in diet from SPOM to micro- and meso-zooplankton occurred during ontogeny in M. yessoensis. Results of the isotope mixing model indicated that SPOM contribution to scallop's diet decreased from 68 to 8 % while those of zooplankton increased from 15 to 50 % with increasing age. This study concludes that age-related dietary shift explains the enrichment of 15N, as a result of predation on zooplankton by M. yessoensis.
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Affiliation(s)
- Frolan A Aya
- a Graduate School of Environmental Science , Hokkaido University , Sapporo , Hokkaido , Japan
| | - Isao Kudo
- a Graduate School of Environmental Science , Hokkaido University , Sapporo , Hokkaido , Japan
- b Faculty of Fisheries Sciences , Hokkaido University , Hakodate , Japan
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Pitt JA, Drouillard KG, Paterson G. Polychlorinated Biphenyl Bioaccumulation Patterns Among Lake Erie Lower Trophic Level Consumers Reflect Species Ecologies. Bull Environ Contam Toxicol 2017; 98:65-70. [PMID: 27904926 DOI: 10.1007/s00128-016-1987-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 11/22/2016] [Indexed: 06/06/2023]
Abstract
Polychlorinated biphenyl (PCB) concentrations were quantified in lower trophic level consumers of the Lake Erie western basin food web to assess the capacity of PCBs to discriminate among trophically similar species inhabiting different compartments of the same ecosystem. Zooplankton were characterized by higher proportions of less chlorinated and hydrophobic homologs relative to zebra mussel (Dreissena polymorpha), mayfly (Hexagenia limbata) and emerald shiner (Notropis atherinoides) samples. PCB biota-sediment accumulation factors (BSAF) differed significantly among species with zebra mussels and emerald shiners having the highest BSAFs. Principal components analysis of sample PCB profiles reflected the contrasting pelagic and benthic habitats occupied by filter-feeding zooplankton and zebra mussel samples. Benthic mayfly PCB profiles were characterized by increasingly hydrophobic (logK OW ≥ 6.9) congeners with more variable emerald shiner profiles reflecting the greater mobility and extent of spatial habitat integration achieved by this secondary consumer. These results contribute to growing evidence for the use of PCBs as ecological tracers in aquatic ecosystems.
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Affiliation(s)
- Jordan A Pitt
- State University of New York, College of Environmental Science and Forestry, Syracuse, NY, 13210, USA
| | - Ken G Drouillard
- Great Lakes Institute for Environmental Research, University of Windsor, Windsor, ON, N9B 3P4, Canada
| | - Gordon Paterson
- State University of New York, College of Environmental Science and Forestry, Syracuse, NY, 13210, USA.
- Michigan Technological University, Houghton, MI, 49931, USA.
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Srichandan S, Panigrahy RC, Baliarsingh SK, Rao B S, Pati P, Sahu BK, Sahu KC. Distribution of trace metals in surface seawater and zooplankton of the Bay of Bengal, off Rushikulya estuary, East Coast of India. Mar Pollut Bull 2016; 111:468-475. [PMID: 27394636 DOI: 10.1016/j.marpolbul.2016.06.099] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Revised: 06/24/2016] [Accepted: 06/28/2016] [Indexed: 06/06/2023]
Abstract
Concentrations of trace metals such as iron (Fe), copper (Cu), zinc (Zn), cobalt (Co), nickel (Ni), manganese (Mn), lead (Pb), cadmium (Cd), chromium (Cr), arsenic (As), vanadium (V), and selenium (Se) were determined in seawater and zooplankton from the surface waters off Rushikulya estuary, north-western Bay of Bengal. During the study period, the concentration of trace metals in seawater and zooplankton showed significant spatio-temporal variation. Cu and Co levels in seawater mostly remained non-detectable. Other elements were found at higher concentrations and exhibited marked variations. The rank order distribution of trace metals in terms of their average concentration in seawater was observed as Fe>Ni>Mn>Pb>As>Zn>Cr>V>Se>Cd while in zooplankton it was Fe>Mn>Cd>As>Pb>Ni>Cr>Zn>V>Se. The bioaccumulation factor (BAF) of Fe was highest followed by Zn and the lowest value was observed with Ni. Results of correlation analysis discerned positive affinity and good relationship among the majority of the trace metals, both in seawater and zooplankton suggesting their strong affinity and coexistence.
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Affiliation(s)
- Suchismita Srichandan
- Department of Marine Sciences, Berhampur University, Brahmapur, Odisha 760007, India.
| | - R C Panigrahy
- Department of Marine Sciences, Berhampur University, Brahmapur, Odisha 760007, India
| | - S K Baliarsingh
- Indian National Centre for Ocean Information Services (INCOIS), Ocean Valley, Pragathi Nagar (BO), Nizampet (SO), Hyderabad 500090, India
| | - Srinivasa Rao B
- Centre for Studies on Bay of Bengal, Andhra University, Visakhapatnam 530003, India
| | - Premalata Pati
- Department of Marine Sciences, Berhampur University, Brahmapur, Odisha 760007, India
| | - Biraja K Sahu
- Department of Marine Sciences, Berhampur University, Brahmapur, Odisha 760007, India
| | - K C Sahu
- Department of Marine Sciences, Berhampur University, Brahmapur, Odisha 760007, India
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Aytan U, Valente A, Senturk Y, Usta R, Esensoy Sahin FB, Mazlum RE, Agirbas E. First evaluation of neustonic microplastics in Black Sea waters. Mar Environ Res 2016; 119:22-30. [PMID: 27187153 DOI: 10.1016/j.marenvres.2016.05.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Revised: 05/06/2016] [Accepted: 05/07/2016] [Indexed: 05/06/2023]
Abstract
The Black Sea has a high risk of plastic pollution given the high river discharge of several industrialized countries into this semi-enclosed sea. Here, for the first time, the occurrence and distribution of microplastics are reported for the Black Sea. Microplastics were assessed from zooplankton samples taken during two cruises along the south eastern coast of the Black Sea in the November of 2014 and February of 2015. In each cruise neuston samples were collected at 12 stations using a WP2 net with 200 μm mesh. Microplastics (0.2-5 mm) were found in 92% of the samples. The primary shapes were fibres (49.4%) followed by plastic films (30.6%) and fragments (20%), and no micro beads were found. Average microplastic concentration in November (1.2 ± 1.1 × 10(3) par. m(-3)) was higher than in February (0.6 ± 0.55 × 10(3) par. m(-3)). Reduced concentrations in February were possibly caused by increased mixing. The highest concentrations of microplastics were observed in offshore stations during November sampling. The heterogeneous spatial distribution (0.2 × 10(3)-3.3 × 10(3) par. m(-3) for all samples) and accumulation in some stations could be associated to transport and retention mechanisms linked with wind and the dynamics of the rim current, as well by different sources of plastic. There were no statistically significant differences in MP concentration between sampling stations and sampling periods (t-test, p < 0.05).The relatively high microplastic concentrations suggest that Black Sea is a hotspot for microplastic pollution and there is an urgency to understand their origins, transportation and effects on marine life.
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Affiliation(s)
- Ulgen Aytan
- Faculty of Fisheries, Recep Tayyip Erdogan University, 53100 Rize, Turkey.
| | - Andre Valente
- Marine and Environmental Sciences Centre, (MARE), Faculty of Sciences, University of Lisbon, Campo Grande, 1749-016 Lisbon, Portugal
| | - Yasemen Senturk
- Faculty of Fisheries, Recep Tayyip Erdogan University, 53100 Rize, Turkey
| | - Riza Usta
- Faculty of Fisheries, Recep Tayyip Erdogan University, 53100 Rize, Turkey
| | | | | | - Ertugrul Agirbas
- Faculty of Fisheries, Recep Tayyip Erdogan University, 53100 Rize, Turkey
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Anikuttan KK, Adhikari S, Kavitha M, Jayasankar P. Carbon sequestration capacity of sediments, algae, and zooplankton from fresh water aquaculture ponds. Environ Monit Assess 2016; 188:422. [PMID: 27321139 DOI: 10.1007/s10661-016-5430-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2015] [Accepted: 06/14/2016] [Indexed: 06/06/2023]
Abstract
The contribution of aquaculture and allied activities to the emission of green house gases and consequently to global warming is an emerging concern among environmentalists in the recent past. However, there exists ample scope for aquaculture activities to sequester carbon and thus compensate for the carbon emissions linked to aquaculture. This article attempts to elucidate the carbon sequestration capacity of sediments, algae, and zooplankton from fresh water aquaculture ponds. The percent organic carbon in the pond sediments ranged from 0.39 to 1.31 with an average value of 0.912 ± 0.321 whereas the carbon sequestration capacity ranged from 0.442 to 1.882 MgC/ha (1 Mg = 10(6) g) with an average value of 1.018 ± 0.447 MgC/ha. In the case of zooplankton and algae from pond, the percent organic carbon was 7.688 ± 0.196 and 2.354 ± 0.047, respectively, whereas the total estimated carbon burial rate was 0.009 ± 0.005 and 0.150 ± 0.003 MgC/ha, respectively. These findings are discussed with the previous reports available at present and are found to be in comparable ranges.
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Affiliation(s)
- K K Anikuttan
- ICAR-Central Marine Fisheries Research Institute, PB.No.1603, Ernakulam North P.O, Ernakulam, Kerala state, PIN- 682018, India.
- Mandapam Regional Centre of CMFRI, Marine fisheries Post, Mandapam Camp, Ramanathapuram District, Tamilnadu, PIN -623 520, India.
| | - S Adhikari
- ICAR-Central Institute of Freshwater Aquaculture, Kausalyaganga, Bhubaneswar, Odisha, PIN-751002, India
| | - M Kavitha
- ICAR-Central Marine Fisheries Research Institute, PB.No.1603, Ernakulam North P.O, Ernakulam, Kerala state, PIN- 682018, India
| | - P Jayasankar
- ICAR-Central Institute of Freshwater Aquaculture, Kausalyaganga, Bhubaneswar, Odisha, PIN-751002, India
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Pomerleau C, Stern GA, Pućko M, Foster KL, Macdonald RW, Fortier L. Pan-Arctic concentrations of mercury and stable isotope ratios of carbon (δ(13)C) and nitrogen (δ(15)N) in marine zooplankton. Sci Total Environ 2016; 551-552:92-100. [PMID: 26874765 DOI: 10.1016/j.scitotenv.2016.01.172] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2015] [Revised: 01/21/2016] [Accepted: 01/25/2016] [Indexed: 06/05/2023]
Abstract
Zooplankton play a central role in marine food webs, dictating the quantity and quality of energy available to upper trophic levels. They act as "keystone" species in transfer of mercury (Hg) up through the marine food chain. Here, we present the first Pan-Arctic overview of total and monomethylmercury concentrations (THg and MMHg) and stable isotope ratios of carbon (δ(13)C) and nitrogen (δ(15)N) in selected zooplankton species by assembling data collected between 1998 and 2012 from six arctic regions (Laptev Sea, Chukchi Sea, southeastern Beaufort Sea, Canadian Arctic Archipelago, Hudson Bay and northern Baffin Bay). MMHg concentrations in Calanus spp., Themisto spp. and Paraeuchaeta spp. were found to increase with higher δ(15)N and lower δ(13)C. The southern Beaufort Sea exhibited both the highest THg and MMHg concentrations. Biomagnification of MMHg between Calanus spp. and two of its known predators, Themisto spp. and Paraeuchaeta spp., was greatest in the southern Beaufort Sea. Our results show large geographical variations in Hg concentrations and isotopic signatures for individual species related to regional ecosystem features, such as varying water masses and freshwater inputs, and highlight the increased exposure to Hg in the marine food chain of the southern Beaufort Sea.
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Affiliation(s)
- Corinne Pomerleau
- Centre for Earth Observation Science, University of Manitoba, Winnipeg, MB R3T 2N2, Canada; Greenland Institute of Natural Resources, Kivioq 2, Nuuk 3900, Greenland.
| | - Gary A Stern
- Centre for Earth Observation Science, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Monika Pućko
- Centre for Earth Observation Science, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | | | - Robie W Macdonald
- Institute of Ocean Sciences, Fisheries and Oceans Canada, Sidney, BC V8L 4B2, Canada
| | - Louis Fortier
- Québec-Océan, Département de Biologie, Université Laval, Québec, QC G1V 0A6, Canada
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Liu AF, Qu GB, Yu M, Liu YW, Shi JB, Jiang GB. Tetrabromobisphenol-A/S and Nine Novel Analogs in Biological Samples from the Chinese Bohai Sea: Implications for Trophic Transfer. Environ Sci Technol 2016; 50:4203-11. [PMID: 27008063 DOI: 10.1021/acs.est.5b06378] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Tetrabromobisphenol-A/S (TBBPA/S) analogs have raised substantial concern because of their adverse effects and potential bioaccumulative properties, such as TBBPA bis(allyl ether) (TBBPA-BAE) and TBBPA bis(2,3-dibromopropyl ether) (TBBPA-BDBPE). In this study, a comprehensive method for simultaneous determination of TBBPA/S and nine novel analogs, including TBBPA-BAE, TBBPA-BDBPE, TBBPS-BDBPE, TBBPA mono(allyl ether) (TBBPA-MAE), TBBPA mono(2-bromoallyl ether) (TBBPA-MBAE), TBBPA mono(2,3-dibromopropyl ether) (TBBPA-MDBPE), TBBPS-MAE, TBBPS-MBAE, and TBBPS-MDBPE in biological samples was developed. The distribution patterns and trophic transfer properties of TBBPA/S and analogs in various biological samples collected from the Chinese Bohai Sea were then studied in detail. For the first time, TBBPA-MBAE and TBBPS-BDBPE were detected in biological samples and TBBPA-MBAE was identified as a byproduct. The concentrations of TBBPA and analogs ranged from ND (not detected or below the method detection limit) to 2782.8 ng/g lipid weight (lw), and for TBBPS and analogs ranged from ND to 927.8 ng/g lw. High detection frequencies (>86%) for TBBPA, TBBPS and TBBPA-MAE, TBBPA-MDBPE, TBBPS-MAE, TBBPS-MBAE, and TBBPS-MDBPE were obtained. Meanwhile, TBBPA, TBBPS, and these five analogs displayed trophic dilution tendencies due to significantly negative correlations between trophic levels and lipid-corrected concentrations together with the trophic magnification factors (from 0.31 to 0.55). The results also indicated the novel TBBPA-MAE, TBBPA-MBAE, TBBPA-MDBPE, TBBPS-MAE, TBBPS-MBAE, and TBBPS-MDBPE could be generated not only as byproducts, but also as the probable transformation products of commercial TBBPA/S derivatives.
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Affiliation(s)
- Ai-Feng Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , P.O. Box 2871, Beijing 100085, China
| | - Guang-Bo Qu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , P.O. Box 2871, Beijing 100085, China
| | - Miao Yu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , P.O. Box 2871, Beijing 100085, China
| | - Yan-Wei Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , P.O. Box 2871, Beijing 100085, China
| | - Jian-Bo Shi
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , P.O. Box 2871, Beijing 100085, China
- Institute of Environment and Health, Jianghan University , Wuhan 430056, China
| | - Gui-Bin Jiang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences , P.O. Box 2871, Beijing 100085, China
- College of Resources and Environment, University of Chinese Academy of Sciences , Beijing 100049, China
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Wolf JM, Johnson B, Silver D, Pate W, Christianson K. Freezing and fractionation: effects of preservation on carbon and nitrogen stable isotope ratios of some limnetic organisms. Rapid Commun Mass Spectrom 2016; 30:562-568. [PMID: 27249848 DOI: 10.1002/rcm.7488] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
RATIONALE Stable isotopes of carbon and nitrogen have become important natural tracers for studying food-web structure and function. Considerable research has demonstrated that chemical preservatives and fixatives shift the isotopic ratios of aquatic organisms. Much less is known about the effects of freezing as a preservation method although this technique is commonly used. METHODS We conducted a controlled experiment to test the effects of freezing (-10 °C) and flash freezing (–79 °C) on the carbon and nitrogen isotope ratios of zooplankton (Cladocera), Mysis diluviana and Rainbow Trout (Oncorhynchus mykiss). Subsamples (~0.5 mg) of dried material were analyzed for percentage carbon, percentage nitrogen, and the relative abundance of stable carbon and nitrogen isotopes (δ13C and δ15N values) using a Carlo Erba NC2500 elemental analyzer interfaced to a ThermoFinnigan MAT Delta Plus isotope ratio mass spectrometer. RESULTS The effects of freezing were taxon-dependent. Freezing had no effect on the isotopic or elemental values of Rainbow Trout muscle. Effects on the δ13C and δ15N values of zooplankton and Mysis were statistically significant but small relative to typical values of trophic fractionation. The treatment-control offsets had larger absolute values for Mysis (δ13C: ≤0.76 ± 0.41‰, δ15N: ≤0.37 ± 0.16‰) than for zooplankton (δ13C: ≤0.12 ± 0.06‰, δ15N: ≤0.30 ± 0.27‰). The effects of freezing were more variable for the δ13C values of Mysis, and more variable for the δ15N values of zooplankton. Generally, both freezing methods reduced the carbon content of zooplankton and Mysis, but freezing had a negative effect on the %N of zooplankton and a positive effect on the %N of Mysis. CONCLUSIONS The species-dependencies and variability of freezing effects on aquatic organisms suggest that more research is needed to understand the mechanisms responsible for freezing-related fractionation before standardized protocols for freezing as a preservation method can be adopted.
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Juncos R, Arcagni M, Rizzo A, Campbell L, Arribére M, Guevara SR. Natural origin arsenic in aquatic organisms from a deep oligotrophic lake under the influence of volcanic eruptions. Chemosphere 2016; 144:2277-2289. [PMID: 26598997 DOI: 10.1016/j.chemosphere.2015.10.092] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Revised: 10/21/2015] [Accepted: 10/22/2015] [Indexed: 06/05/2023]
Abstract
Volcanic eruptions are recognized sources of toxic elements to freshwater, including arsenic (As). In order to study the short term changes in the bioaccumulation of naturally occurring As by aquatic organisms in Lake Nahuel Huapi (Argentina), located close to the Puyehue-Cordón Caulle volcanic complex (PCCVC), we described As concentrations at different trophic levels and food web transfer patterns in three sites of the lake prior to the last PCCVC eruption (June 2011), and compared As concentrations in biota before and after the eruption. The highest As concentrations and greater variations both between sites and position in the water column, were observed in phytoplankton (3.9-64.8 µg g(-1) dry weight, DW) and small zooplankton (4.3-22.3 µg g(-1) DW). The pattern of As accumulation in aquatic organisms (whole body or muscle) was: primary producers (phytoplankton) > scrapper mollusks (9.3-15.3 µg g(-1) DW) > filter feeding mollusks (5.4-15.6 µg g(-1) DW) > omnivorous invertebrates (0.4-9.2 µg g(-1) DW) > zooplankton (1.2-3.5 µg g(-1) DW) > fish (0.2-1.9 µg g(-1) DW). We observed As biodilution in the whole food web, and in salmonids food chains, feeding on fish prey; but biomagnification in the food chain of creole perch, feeding on benthic crayfish. The impact of the 2011 PCCVC eruption on the As levels of biota was more evident in pelagic-associated organisms (zooplankton and planktivorous fish), but only in the short term, suggesting a brief high bioavailability of As in water after ash deposition. In benthic organisms As variations likely responded to shift in diet due to coverage of the littoral zone with ashes.
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Affiliation(s)
- Romina Juncos
- Laboratorio de Análisis por Activación Neutrónica (LAAN), Centro Atómico Bariloche, Comisión Nacional de Energía Atómica, Av. Bustillo 9500, 8400 Bariloche, Argentina; Centro Científico Tecnológico - CONICET - Patagonia Norte, Av. de los Pioneros 2350, 8400 Bariloche, Argentina.
| | - Marina Arcagni
- Laboratorio de Análisis por Activación Neutrónica (LAAN), Centro Atómico Bariloche, Comisión Nacional de Energía Atómica, Av. Bustillo 9500, 8400 Bariloche, Argentina
| | - Andrea Rizzo
- Laboratorio de Análisis por Activación Neutrónica (LAAN), Centro Atómico Bariloche, Comisión Nacional de Energía Atómica, Av. Bustillo 9500, 8400 Bariloche, Argentina; Centro Científico Tecnológico - CONICET - Patagonia Norte, Av. de los Pioneros 2350, 8400 Bariloche, Argentina
| | - Linda Campbell
- Department of Environmental Science, Saint Mary's University, 923 Robie St., Halifax, NS B3H 3C3, Canada
| | - María Arribére
- Laboratorio de Análisis por Activación Neutrónica (LAAN), Centro Atómico Bariloche, Comisión Nacional de Energía Atómica, Av. Bustillo 9500, 8400 Bariloche, Argentina
| | - Sergio Ribeiro Guevara
- Laboratorio de Análisis por Activación Neutrónica (LAAN), Centro Atómico Bariloche, Comisión Nacional de Energía Atómica, Av. Bustillo 9500, 8400 Bariloche, Argentina
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Xie Z, Lu G, Liu J, Yan Z, Ma B, Zhang Z, Chen W. Occurrence, bioaccumulation, and trophic magnification of pharmaceutically active compounds in Taihu Lake, China. Chemosphere 2015; 138:140-7. [PMID: 26070079 DOI: 10.1016/j.chemosphere.2015.05.086] [Citation(s) in RCA: 119] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Revised: 05/21/2015] [Accepted: 05/27/2015] [Indexed: 05/08/2023]
Abstract
The occurrence, bioaccumulation, and trophic magnification of pharmaceutically active compounds, (PhACs) including antibiotics (roxithromycin and erythromycin), non-steroidal anti-inflammatory drugs (ibuprofen and diclofenac), a non-selective β-adrenoceptor blocker (propranolol), an antiepileptic drug (carbamazepine), and steroid estrogens (17β-estradiol and 17α-ethynylestradiol), were investigated in Taihu Lake, China. All eight PhACs were widely detected in surface water and sediment samples with maximal concentrations in the range of 8.74-118 ng L(-1) and 0.78-42.5 ng g(-1) dry weight (dw), respectively. The investigated organisms in the natural freshwater food web in Taihu Lake included phytoplankton, zooplankton, zoobenthos, and fish, and the maximal concentrations of target compounds in these biota samples ranged from 0.65 to 132 ng g(-1) dw. Bioaccumulation factors (BAFs) for all target PhACs were lower than 1000 L kg(-1), suggesting their low bioaccumulation potential in aquatic organisms from Taihu Lake. Trophic magnification factors (TMFs) were estimated at 1.11 for roxithromycin, 0.31 for propranolol, and 1.06 for diclofenac, indicating none of these PhACs underwent trophic magnification in this freshwater food web.
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Affiliation(s)
- Zhengxin Xie
- Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Guanghua Lu
- Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China.
| | - Jianchao Liu
- Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Zhenhua Yan
- Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Binni Ma
- Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Zhenghua Zhang
- Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
| | - Wei Chen
- Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes of Ministry of Education, College of Environment, Hohai University, Nanjing 210098, China
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Ruus A, Øverjordet IB, Braaten HFV, Evenset A, Christensen G, Heimstad ES, Gabrielsen GW, Borgå K. Methylmercury biomagnification in an Arctic pelagic food web. Environ Toxicol Chem 2015; 34:2636-2643. [PMID: 26274519 DOI: 10.1002/etc.3143] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Revised: 04/02/2015] [Accepted: 06/25/2015] [Indexed: 06/04/2023]
Abstract
Mercury (Hg) is a toxic element that enters the biosphere from natural and anthropogenic sources, and emitted gaseous Hg enters the Arctic from lower latitudes by long-range transport. In aquatic systems, anoxic conditions favor the bacterial transformation of inorganic Hg to methylmercury (MeHg), which has a greater potential for bioaccumulation than inorganic Hg and is the most toxic form of Hg. The main objective of the present study was to quantify the biomagnification of MeHg in a marine pelagic food web, comprising species of zooplankton, fish, and seabirds, from the Kongsfjorden system (Svalbard, Norway), by use of trophic magnification factors. As expected, tissue concentrations of MeHg increased with increasing trophic level in the food web, though at greater rates than observed in several earlier studies, especially at lower latitudes. There was strong correlation between MeHg and total Hg concentrations through the food web as a whole. The concentration of MeHg in kittiwake decreased from May to October, contributing to seasonal differences in trophic magnification factors. The ecology and physiology of the species comprising the food web in question may have a large influence on the magnitude of the biomagnification. A significant linear relationship was also observed between concentrations of selenium and total Hg in birds but not in zooplankton, suggesting the importance of selenium in Hg detoxification for individuals with high Hg concentrations.
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Affiliation(s)
- Anders Ruus
- Norwegian Institute for Water Research, Oslo, Norway
| | - Ida B Øverjordet
- Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway
- SINTEF Materials and Chemistry, Marine Environmental Technology, Trondheim, Norway
| | | | - Anita Evenset
- Akvaplan-niva, Fram Centre, Tromsø, Norway
- University of Tromsø, The Arctic University of Norway, Tromsø, Norway
| | | | | | | | - Katrine Borgå
- Norwegian Institute for Water Research, Oslo, Norway
- Department of Biosciences, University of Oslo, Oslo, Norway
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Gorokhova E. Screening for microplastic particles in plankton samples: How to integrate marine litter assessment into existing monitoring programs? Mar Pollut Bull 2015; 99:271-5. [PMID: 26231064 DOI: 10.1016/j.marpolbul.2015.07.056] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2015] [Revised: 07/24/2015] [Accepted: 07/25/2015] [Indexed: 05/10/2023]
Abstract
Microplastics (MPs) are a newly recognized type of environmental pollution in aquatic systems; however no monitoring of these contaminants is conducted, mostly due to the lack of routine quantification. In the net samples collected with a 90-μm WP2 net, pelagic MP abundance was quantified by light microscopy and evaluated as a function of inshore-offshore gradient, depth, and season; the same samples were used for zooplankton analysis. The MP abundance was ∼10(2)-10(4)particlesm(-3), with no significant inshore-offshore gradient during summer but increasing offshore in winter. MP abundance in deeper layers was positively affected by zooplankton abundance in the upper layers and significantly lower during winter compared to summer. These findings indicate heterogeneity of MP distribution due to biotic and abiotic factors and suggest that samples collected for other purposes can be used for quantification of MPs in the Baltic Sea, thus facilitating integration of MP assessment into existing monitoring schemes.
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Affiliation(s)
- Elena Gorokhova
- Department of Environmental Science and Analytical Chemistry, Stockholm University, Stockholm, Sweden.
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Przytulska A, Bartosiewicz M, Rautio M, Dufresne F, Vincent WF. Climate Effects on High Latitude Daphnia via Food Quality and Thresholds. PLoS One 2015; 10:e0126231. [PMID: 25970289 PMCID: PMC4430472 DOI: 10.1371/journal.pone.0126231] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Accepted: 03/31/2015] [Indexed: 11/18/2022] Open
Abstract
Climate change is proceeding rapidly at high northern latitudes and may have a variety of direct and indirect effects on aquatic food webs. One predicted effect is the potential shift in phytoplankton community structure towards increased cyanobacterial abundance. Given that cyanobacteria are known to be a nutritionally poor food source, we hypothesized that such a shift would reduce the efficiency of feeding and growth of northern zooplankton. To test this hypothesis, we first isolated a clone of Daphnia pulex from a permafrost thaw pond in subarctic Québec, and confirmed that it was triploid but otherwise genetically similar to a diploid, reference clone of the same species isolated from a freshwater pond in southern Québec. We used a controlled flow-through system to investigate the direct effect of temperature and indirect effect of subarctic picocyanobacteria (Synechococcus) on threshold food concentrations and growth rate of the high latitude clone. We also compared the direct effect of temperature on both Daphnia clones feeding on eukaryotic picoplankton (Nannochloropsis). The high latitude clone had a significantly lower food threshold for growth than the temperate clone at both 18 and 26°C, implying adaptation to lower food availability even under warmer conditions. Polyunsaturated fatty acids were present in the picoeukaryote but not the cyanobacterium, confirming the large difference in food quality. The food threshold for growth of the high latitude Daphnia was 3.7 (18°C) to 4.2 (26°C) times higher when fed Synechococcus versus Nannochloropsis, and there was also a significant negative effect of increased temperature and cyanobacterial food on zooplankton fatty acid content and composition. The combined effect of temperature and food quality on the performance of the high latitude Daphnia was greater than their effects added separately, further indicating the potentially strong indirect effects of climate warming on aquatic food web processes.
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Affiliation(s)
- Anna Przytulska
- Centre d’études nordiques (CEN), Université Laval, Québec, Québec, Canada
- Département de biologie, Université Laval, Québec, Québec, Canada
- * E-mail:
| | - Maciej Bartosiewicz
- Centre d’études nordiques (CEN), Université Laval, Québec, Québec, Canada
- Centre Eau Terre Environnement, Institut National de la Recherche Scientifique, Québec, Québec, Canada
| | - Milla Rautio
- Centre d’études nordiques (CEN), Université Laval, Québec, Québec, Canada
- Department of Fundamental Sciences, Université du Québec à Chicoutimi, Chicoutimi, Québec, Canada
| | - France Dufresne
- Biology, Chemistry and Geography Department, Université du Québec à Rimouski, Rimouski, Québec, Canada
| | - Warwick F. Vincent
- Centre d’études nordiques (CEN), Université Laval, Québec, Québec, Canada
- Département de biologie, Université Laval, Québec, Québec, Canada
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Strady E, Kim I, Radakovitch O, Kim G. Rare earth element distributions and fractionation in plankton from the northwestern Mediterranean Sea. Chemosphere 2015; 119:72-82. [PMID: 24972173 DOI: 10.1016/j.chemosphere.2014.05.049] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Revised: 04/30/2014] [Accepted: 05/16/2014] [Indexed: 06/03/2023]
Abstract
Rare earth element (REE) concentrations were measured for the first time in plankton from the northwestern Mediterranean Sea. The REE concentrations in phytoplankton (60-200 μm) were 5-15 times higher than those in four size fractions of zooplankton: 200-500 μm, 500-1000 μm, 1000-2000 μm and >2000 μm. The concentrations within these zooplankton fractions exhibited the same ranges with some variation attributed to differences in zooplankton taxonomy. The REE concentrations in plankton were poorly related to the reported REE concentrations of seawater, but they correlated well with the calculated REE(3+), concentrations especially with regard to middle REE (MREEs) and heavy REEs (HREEs). Plankton and seawater revealed different PAAS-normalised REE distributions, with the greatest differences observed in the light REEs. Interestingly, a comparison of PAAS-normalized sediment particles from the study of Fowler et al. (1992) showed concentrations of the same order of magnitude and a similar REE distribution without MREE enrichment. Based on this comparison, we propose a conceptual model that emphasizes the importance of biological scavenging of REEs (especially LREEs) in surface waters.
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Affiliation(s)
- Emilie Strady
- Seoul National University, School of Earth and Environmental Sciences/RIO, Seoul National University, Seoul 151-747, Republic of Korea; Laboratoire d'étude des Transferts en Hydrologie et Environnement LTHE-IRD, UMR 5564, Domaine Universitaire, 38041 Grenoble Cedex 09, France.
| | - Intae Kim
- Seoul National University, School of Earth and Environmental Sciences/RIO, Seoul National University, Seoul 151-747, Republic of Korea
| | - Olivier Radakovitch
- Aix Marseille University, CNRS, CEREGE UMR 7330, F-13545 Aix En Provence, France
| | - Guebuem Kim
- Seoul National University, School of Earth and Environmental Sciences/RIO, Seoul National University, Seoul 151-747, Republic of Korea
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Abstract
Most of the carbon fixed in primary production is rapidly cycled and remineralized, leaving behind various forms of organic carbon that contribute to a vast reservoir of nonliving organic matter in seawater. Most of this carbon resides in dissolved molecules of varying bioavailability and reactivity, and aspects of the cycling of this carbon remain an enigma. The size-reactivity continuum model provides a conceptual framework for understanding the mechanisms governing the formation and mineralization of this carbon. In the seawater bioassay experiments that served as the original basis for this model, investigators observed that larger size classes of organic matter were more bioavailable and more rapidly remineralized by microbes than were smaller size classes. Studies of the chemical composition and radiocarbon content of marine organic matter have further indicated that the complexity and age of organic matter increase with decreasing molecular size. Biodegradation processes appear to shape the size distribution of organic matter and the nature of the small dissolved molecules that persist in the ocean.
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Affiliation(s)
- Ronald Benner
- Department of Biological Sciences and Marine Science Program, University of South Carolina, Columbia, South Carolina 29208;
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Peltonen H, Ruokojärvi P, Korhonen M, Kiviranta H, Flinkman J, Verta M. PCDD/Fs, PCBs and PBDEs in zooplankton in the Baltic Sea - spatial and temporal shifts in the congener-specific concentrations. Chemosphere 2014; 114:172-180. [PMID: 25113199 DOI: 10.1016/j.chemosphere.2014.04.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Revised: 04/02/2014] [Accepted: 04/07/2014] [Indexed: 06/03/2023]
Abstract
In the marine food-webs, zooplankton is a key element in the transfer of persistent organic pollutants to higher trophic levels. We determined the congener-specific concentrations of polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs) in offshore zooplankton (size from 0.2 to 20mm) collected in 2001, 2002 and 2010 in the northern and central Baltic Sea. Of the PCDD/Fs, the concentrations of 2378-TCDF were from 18 to 47 and of 23478-PeCDF from 7.9 to 29 pg g(-1)fat and showed little temporal differences. However, 1234678-HpCDF and OCDF were abundant in 2001-2002 especially in the eastern Gulf of Finland (average concentrations 50 and 89 pg g(-1)fat, respectively). In 2010 the concentrations of these two congeners were lower, 29 and 30 pg g(-1)fat, respectively, but still substantially higher than in the other surveyed areas. The principal components analysis (PCA) supported that area-specific patterns in pollution strongly contributed to the congener profiles particularly in surface sediment and in sediment trap material, but even in zooplankton. The concentrations of the PCBs were highest in the Gulf of Finland and in the Bothnian Bay. The concentrations of most PCBs were somewhat lower in 2010 than in 2001-2002. Of the dioxin-like PCBs, the concentrations of PCB-77 were highest (271-572 pg g(-1)fat) but PCB-126 (32-113 pg g(-1)fat) contributed from 85% to 91% of the total toxicity of PCBs due to its higher toxic potency. Of the PBDEs, the BDE47 and BDE99 were the most abundant (concentrations from 1.2 to 4.6 and from 0.4 to 3.3 ng g(-1) fat, respectively). The concentrations of most PBDEs were lower in 2010 than in 2001/2002 except in the eastern Gulf of Finland.
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Affiliation(s)
- Heikki Peltonen
- Finnish Environment Institute (SYKE), P.O. Box 140, Helsinki, Finland.
| | - Päivi Ruokojärvi
- National Institute for Health and Welfare, P.O. Box 95, Kuopio, Finland.
| | - Markku Korhonen
- Finnish Environment Institute (SYKE), P.O. Box 140, Helsinki, Finland.
| | - Hannu Kiviranta
- National Institute for Health and Welfare, P.O. Box 95, Kuopio, Finland.
| | - Juha Flinkman
- Finnish Environment Institute (SYKE), P.O. Box 140, Helsinki, Finland.
| | - Matti Verta
- Finnish Environment Institute (SYKE), P.O. Box 140, Helsinki, Finland.
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Bhattacharya BD, Hwang JS, Tseng LC, Sarkar SK, Rakshit D, Mitra S. Bioaccumulation of trace elements in dominant mesozooplankton group inhabiting in the coastal regions of Indian Sundarban mangrove wetland. Mar Pollut Bull 2014; 87:345-351. [PMID: 25110048 DOI: 10.1016/j.marpolbul.2014.07.050] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2014] [Revised: 07/10/2014] [Accepted: 07/17/2014] [Indexed: 06/03/2023]
Abstract
Mesozooplankton (Body size 20-200 μm) along with the surface water were collected from coastal regions of Sundarban, northeastern part of Bay of Bengal considering three seasons, namely premonsoon, monsoon and postmonsoon. Samples were analyzed for community structure and the dominant copepod species were further analyzed for trace metal concentration. In total, 50 copepods were identified (22 families and 43 genera). The dominant mesozooplankton species included 9 copepods and an epipelagic chaetognath, exhibited both spatial and seasonal variations. Metal concentration exhibited considerable inter-specific variations for the copepods and the mean concentrations were: Fe, 1350.2-51118.3 μg/g; Al, 647.2-73019.1 μg/g; Ni, 32.4-110.3 μg/g; Mn, 122.8-1066.5 μg/g; Pb, 0.04-97.5 μg/g; Pb, 10.6-97.5 μg/g; Cd, 4.2-21.6 μg/g; Cu, 17.4-145.1 μg/g; Zn, 225.7-1670.9 μg/g; Cr, 21.7-194.3 μg/g; Co, 1.32-111.1 μg/g. Metal concentrations showed the following order: Sagitta bedoti>Coryceas danae>Oithona sp.>Eucalanus subcrassus>Labidocera euchaeta>Paracalanus parvus>Acartiella tortaniformis>Acartia spinicauda>Pseudocalanus serricaudatus.
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Affiliation(s)
- Bhaskar Deb Bhattacharya
- Department of Marine Science, University of Calcutta, 35 Ballygunge Circular Road, Calcutta 700019, India
| | - Jiang-Shiou Hwang
- Institute of Marine Biology, National Taiwan Ocean University, Keelung 20224, Taiwan
| | - Li-Chun Tseng
- Institute of Marine Biology, National Taiwan Ocean University, Keelung 20224, Taiwan
| | - Santosh Kumar Sarkar
- Department of Marine Science, University of Calcutta, 35 Ballygunge Circular Road, Calcutta 700019, India.
| | - Dibyendu Rakshit
- Department of Marine Science, University of Calcutta, 35 Ballygunge Circular Road, Calcutta 700019, India
| | - Soumita Mitra
- Department of Marine Science, University of Calcutta, 35 Ballygunge Circular Road, Calcutta 700019, India
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Carlsson P, Warner NA, Hallanger IG, Herzke D, Kallenborn R. Spatial and temporal distribution of chiral pesticides in Calanus spp. from three Arctic fjords. Environ Pollut 2014; 192:154-161. [PMID: 24951967 DOI: 10.1016/j.envpol.2014.05.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Revised: 05/19/2014] [Accepted: 05/22/2014] [Indexed: 06/03/2023]
Abstract
Concentration and enantiomeric fractions (EFs) of chiral chlorinated pesticides (α-hexachlorocyclohexane (α-HCH), trans-, cis- and oxychlordane) were determined in Arctic zooplankton, mainly Calanus spp. collected in the period 2007-11 from Svalbard fjords and open pack-ice. The temporal and spatial enantiomer distribution varied considerably for all species and chiral pesticides investigated. An overall enantiomeric excess of (+)-oxychlordane (EF 0.53-0.86) were observed. Cis-chlordane was close to racemic (EF 0.46-0.55), while EF for trans-chlordane varied between 0.29 and 0.55, and between 0.38 and 0.59 for α-HCH. The biodegradation potential for trans-chlordane was higher compared to cis-chlordane. The comprehensive statistical evaluation of the data set revealed that the EF distribution of α-HCH was affected by ice cover to a higher extent compared to cis-chlordane. Potential impact from benthic processes on EFs in zooplankton is an interesting feature and should be further investigated. Enantiomeric selective analyses may be a suitable tool for investigations of climate change related influences on Arctic ecosystems.
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Affiliation(s)
- Pernilla Carlsson
- University Centre in Svalbard, P.O. Box 156, NO-9171 Longyearbyen, Norway; University of Tromsø, Hansine Hansens veg 14, NO-9007 Tromsø, Norway
| | - Nicholas A Warner
- Norwegian Institute for Air Research (NILU), FRAM - High North Research Centre on Climate and the Environment, Hjalmar Johansens gate 14, NO-9296 Tromsø, Norway
| | | | - Dorte Herzke
- Norwegian Institute for Air Research (NILU), FRAM - High North Research Centre on Climate and the Environment, Hjalmar Johansens gate 14, NO-9296 Tromsø, Norway
| | - Roland Kallenborn
- University Centre in Svalbard, P.O. Box 156, NO-9171 Longyearbyen, Norway; Norwegian University of Life Sciences, Department of Chemistry, Biotechnology and Food Science, P.O. Box 5003, Christian M. Falsens veg 1, NO-1432 Ås, Norway.
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