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Ishibashi H, Nishimura S, Tanaka K, Haruta S, Takayama K, Yamashiro H, Takeuchi I. Transcriptome analysis reveals limited toxic effects of the UV-filter benzophenone-3 (BP-3) on the hermatypic coral Acropora tenuis and its symbiotic dinoflagellates. MARINE POLLUTION BULLETIN 2024; 201:116260. [PMID: 38522341 DOI: 10.1016/j.marpolbul.2024.116260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 02/22/2024] [Accepted: 03/11/2024] [Indexed: 03/26/2024]
Abstract
This study aimed to investigate the toxic and transcriptomic effects of the ultraviolet filter benzophenone-3 (BP-3) on Acropora tenuis and its symbiotic dinoflagellates while using acetone as a solvent. Seven-day exposure to 50 and 500 μg/L, which is higher than most BP-3 records from coastal waters, did not affect coral colour or dinoflagellate photosynthesis. Differentially expressed genes (DEGs) between seawater and solvent controls were <20 in both corals and dinoflagellates. Eleven coral DEGs were detected after treatment with 50 μg/L BP-3. Fourteen coral DEGs, including several fluorescent protein genes, were detected after treatment with 500 μg/L BP-3. In contrast, no dinoflagellate DEGs were detected in the BP-3 treatment group. These results suggest that the effects of 50-500 μg/L BP-3 on adult A. tenuis and its dinoflagellates are limited. Our experimental methods with lower acetone toxicity provide a basis for establishing standard ecotoxicity tests for corals.
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Affiliation(s)
- Hiroshi Ishibashi
- Graduate School of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan; Center of Advanced Technology for the Environment, Graduate School of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan
| | - Saori Nishimura
- Faculty of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan
| | - Kokoro Tanaka
- Faculty of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan
| | - Shinsuke Haruta
- Graduate School of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan; Center of Advanced Technology for the Environment, Graduate School of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan
| | - Kotaro Takayama
- Graduate School of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan; Center of Advanced Technology for the Environment, Graduate School of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan
| | - Hideyuki Yamashiro
- Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus, 3422 Sesoko, Motobu, Okinawa, Japan
| | - Ichiro Takeuchi
- Graduate School of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan; Center of Advanced Technology for the Environment, Graduate School of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime 790-8566, Japan.
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Nordborg FM, Brinkman DL, Fisher R, Parkerton TF, Oelgemöller M, Negri AP. Effects of aromatic hydrocarbons and evaluation of oil toxicity modelling for larvae of a tropical coral. MARINE POLLUTION BULLETIN 2023; 196:115610. [PMID: 37804672 DOI: 10.1016/j.marpolbul.2023.115610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 09/26/2023] [Accepted: 09/28/2023] [Indexed: 10/09/2023]
Abstract
Application of oil toxicity modelling for assessing the risk of spills to coral reefs remains uncertain due to a lack of data for key tropical species and environmental conditions. In this study, larvae of the coral Acropora millepora were exposed to six aromatic hydrocarbons individually to generate critical target lipid body burdens (CTLBBs). Larval metamorphosis was inhibited by all six aromatic hydrocarbons, while larval survival was only affected at concentrations >2000 μg L-1. The derived metamorphosis CTLBB of 9.7 μmol g-1 octanol indicates larvae are more sensitive than adult corals, and places A. millepora larvae among the most sensitive organisms in the target lipid model (TLM) databases. Larvae were also more sensitive to anthracene and pyrene when co-exposed to ecologically relevant levels of ultraviolet radiation. The results suggest that the application of the phototoxic TLM would be protective of A. millepora larvae, provided adequate chemical and light data are available.
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Affiliation(s)
- F Mikaela Nordborg
- AIMS@JCU, Division of Research & Innovation, James Cook University and Australian Institute of Marine Science, Townsville 4810, Queensland, Australia; College of Science & Engineering, Division of Tropical Environments and Societies, James Cook University, Townsville 4810, Queensland, Australia; Australian Institute of Marine Science, Townsville 4810, Queensland, Australia.
| | - Diane L Brinkman
- Australian Institute of Marine Science, Townsville 4810, Queensland, Australia
| | - Rebecca Fisher
- Australian Institute of Marine Science, Crawley 6009, Western Australia, Australia
| | | | - Michael Oelgemöller
- Faculty of Chemistry and Biology, Hochschule Fresenius gGmbH-University of Applied Sciences, D-65510 Idstein, Germany
| | - Andrew P Negri
- AIMS@JCU, Division of Research & Innovation, James Cook University and Australian Institute of Marine Science, Townsville 4810, Queensland, Australia; Australian Institute of Marine Science, Townsville 4810, Queensland, Australia
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3
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May LA, Miller CV, Moffitt ZJ, Balthis L, Karazsia J, Wilber P, Woodley CM. Acute turbidity exposures with Port of Miami sediments impact Orbicella faveolata tissue regeneration. MARINE POLLUTION BULLETIN 2023; 193:115217. [PMID: 37437476 DOI: 10.1016/j.marpolbul.2023.115217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 06/19/2023] [Accepted: 06/22/2023] [Indexed: 07/14/2023]
Abstract
We evaluated acute turbidity effects on a threatened coral species (Orbicella faveolata) under three short-term challenge scenarios using a Port of Miami sediment homogenate to simulate turbid conditions during dredging. For these experiments we designed a simple coral challenge test system that kept turbidity stable, without adverse effects to the coral. A 96-h coral challenge experiment demonstrated that low turbidity levels (≥4 NTU) have negative effects on O. faveolata tissue regeneration. A 48-h turbidity exposure (maximum 30 NTU) had no effect on O. faveolata tissue regeneration, showing that short term turbidity exposures may not be detrimental to coral health. In a 13-day test, treated coral fragments (maximum 30 NTU) exhibited significant delays in tissue regeneration, but recovery was observed after approximately one week. The results presented here can be used to inform management decisions for proposed dredging activities proximal to coral reef habitats.
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Affiliation(s)
- Lisa A May
- Consolidated Safety Services, Inc. contractor for National Oceanic and Atmospheric Administration, National Ocean Service, National Centers for Coastal Ocean Science, Hollings Marine Laboratory, 331 Ft. Johnson Rd., Charleston, SC 29412, United States of America.
| | - Carl V Miller
- Consolidated Safety Services, Inc. contractor for National Oceanic and Atmospheric Administration, National Ocean Service, National Centers for Coastal Ocean Science, Hollings Marine Laboratory, 331 Ft. Johnson Rd., Charleston, SC 29412, United States of America
| | - Zachary J Moffitt
- Consolidated Safety Services, Inc. contractor for National Oceanic and Atmospheric Administration, National Ocean Service, National Centers for Coastal Ocean Science, Hollings Marine Laboratory, 331 Ft. Johnson Rd., Charleston, SC 29412, United States of America
| | - Len Balthis
- National Oceanic and Atmospheric Administration, National Ocean Service, National Centers for Coastal Ocean Science, 219 Ft. Johnson Rd., Charleston, SC 29412, United States of America
| | - Jocelyn Karazsia
- National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Southeast Regional Office, Habitat Conservation Division, 400 North Congress Ave, Suite 270, West Palm Beach, FL 33401, United States of America
| | - Pace Wilber
- National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Southeast Regional Office, Habitat Conservation Division, 331 Ft Johnson Road, Charleston, SC 29412, United States of America
| | - Cheryl M Woodley
- National Oceanic and Atmospheric Administration, National Ocean Service, National Centers for Coastal Ocean Science, Hollings Marine Laboratory, 331 Fort Johnson Rd., Charleston, SC 29412, United States of America.
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4
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Brinkman DL, Flores F, Luter HM, Nordborg FM, Brooks M, Parkerton TF, Negri AP. Sensitivity of the Indo-Pacific coral Acropora millepora to aromatic hydrocarbons. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023:121963. [PMID: 37286027 DOI: 10.1016/j.envpol.2023.121963] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 05/22/2023] [Accepted: 06/03/2023] [Indexed: 06/09/2023]
Abstract
The risks posed by petroleum spills to coral reefs are poorly understood and quantifying acute toxicity thresholds for aromatic hydrocarbons to reef-building corals is required to assess their sensitivity relative to other taxa. In this study, we exposed Acropora millepora to toluene, naphthalene and 1-methylnaphthalene (1-MN) in a flow-through system and assessed survivorship and sublethal responses including growth, colour and the photosynthetic performance of symbionts. Median 50% lethal concentrations (LC50s) decreased over the 7-d exposure period, reaching asymptotic values of 22,921, 5,268, 1167 μg L-1 for toluene, naphthalene and 1-MN, respectively. Corresponding toxicokinetic parameters (εLC50) defining the time progression of toxicity were 0.830, 0.692, and 0.256 d-1, respectively. Latent effects after an additional 7-d recovery in uncontaminated seawater were not observed. Effect concentrations (EC50s) for 50% growth inhibition were 1.9- to 3.6-fold lower than the LC50s for each aromatic hydrocarbon. There were no observed effects of aromatic hydrocarbon exposure on colour score (a proxy for bleaching) or photosynthetic efficiency. Acute and chronic critical target lipid body burdens (CTLBBs) of 70.3 ± 16.3 and 13.6 ± 18.4 μmol g-1 octanol (± standard error) were calculated for survival and growth inhibition based on 7-d LC50 and EC10 values, respectively. These species-specific constants indicate adult A. millepora is more sensitive than other corals reported so far but is of average sensitivity in comparison with other aquatic taxa in the target lipid model database. These results advance our understanding of acute hazards of petroleum contaminants to key habitat-building tropical coral reef species.
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Affiliation(s)
- Diane L Brinkman
- Australian Institute of Marine Science, Townsville, Queensland, 4810, Australia.
| | - Florita Flores
- Australian Institute of Marine Science, Townsville, Queensland, 4810, Australia
| | - Heidi M Luter
- Australian Institute of Marine Science, Townsville, Queensland, 4810, Australia
| | - F Mikaela Nordborg
- Australian Institute of Marine Science, Townsville, Queensland, 4810, Australia; AIMS@JCU, Division of Research & Innovation, James Cook University and Australian Institute of Marine Science, Townsville, Queensland, 4810, Australia; James Cook University, College of Science & Engineering, Townsville, Queensland 4810, Australia
| | - Maxime Brooks
- Australian Institute of Marine Science, Townsville, Queensland, 4810, Australia; AIMS@JCU, Division of Research & Innovation, James Cook University and Australian Institute of Marine Science, Townsville, Queensland, 4810, Australia; James Cook University, College of Science & Engineering, Townsville, Queensland 4810, Australia
| | | | - Andrew P Negri
- Australian Institute of Marine Science, Townsville, Queensland, 4810, Australia; AIMS@JCU, Division of Research & Innovation, James Cook University and Australian Institute of Marine Science, Townsville, Queensland, 4810, Australia
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5
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Ferreira NM, Coutinho R, de Oliveira LS. Emerging studies on oil pollution biomonitoring: A systematic review. MARINE POLLUTION BULLETIN 2023; 192:115081. [PMID: 37236096 DOI: 10.1016/j.marpolbul.2023.115081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 05/15/2023] [Accepted: 05/16/2023] [Indexed: 05/28/2023]
Abstract
In the last decade, several methods were applied to monitor the impact of oil pollution on marine organisms. Recent studies showed an eminent need to standardize these methods to produce comparable results. Here we present the first thorough systematic review of the literature on oil pollution monitoring methods in the last decade. The literature search resulted on 390 selected original articles, categorized according to the analytical method employed. Except for Ecosystem-level analyses, most methods are used on short-term studies. The combination of Biomarker and Bioaccumulation analysis is the most frequently adopted strategy for oil pollution biomonitoring, followed by Omic analyses. This systematic review describes the principles of the most frequently used monitoring tools, presents their advantages, limitations, and main findings and, as such, could be used as a guideline for future researches on the field.
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Affiliation(s)
- Nícollas Menezes Ferreira
- Department of Marine Biotechnology, Instituto de Estudos do Mar Almirante Paulo Moreira-IEAPM, Arraial do Cabo, RJ 28930000, Brazil; Marine Biotecnology Graduate Program, Instituto de Estudos do Mar Almirante Paulo Moreia-IEAPM and Universidade Federal Fluminense-UFF, Niterói, RJ 24220900, Brazil
| | - Ricardo Coutinho
- Department of Marine Biotechnology, Instituto de Estudos do Mar Almirante Paulo Moreira-IEAPM, Arraial do Cabo, RJ 28930000, Brazil; Marine Biotecnology Graduate Program, Instituto de Estudos do Mar Almirante Paulo Moreia-IEAPM and Universidade Federal Fluminense-UFF, Niterói, RJ 24220900, Brazil
| | - Louisi Souza de Oliveira
- Department of Marine Biotechnology, Instituto de Estudos do Mar Almirante Paulo Moreira-IEAPM, Arraial do Cabo, RJ 28930000, Brazil; Marine Biotecnology Graduate Program, Instituto de Estudos do Mar Almirante Paulo Moreia-IEAPM and Universidade Federal Fluminense-UFF, Niterói, RJ 24220900, Brazil.
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6
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Hulver AM, Steckbauer A, Ellis JI, Aylagas E, Roth F, Kharbatia N, Thomson T, Carvalho S, Jones BH, Berumen ML. Interaction effects of crude oil and nutrient exposure on settlement of coral reef benthos. MARINE POLLUTION BULLETIN 2022; 185:114352. [PMID: 36395713 DOI: 10.1016/j.marpolbul.2022.114352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 11/02/2022] [Accepted: 11/06/2022] [Indexed: 06/16/2023]
Abstract
Anthropogenic stressors increasingly cause ecosystem-level changes to sensitive marine habitats such as coral reefs. Intensification of coastal development and shipping traffic can increase nutrient and oil pollution on coral reefs, yet these two stressors have not been studied in conjunction. Here, we simulate a disturbance scenario exposing carbonate settlement tiles to nutrient and oil pollution in a full-factorial design with four treatments: control, nutrients, oil, and combination to examine community structure and net primary productivity (NPP) of pioneer communities throughout 28 weeks. Compared to the control treatment oil pollution decreased overall settlement and NPP, while nutrients increased turf algae and NPP. However, the combination of these two stressors resulted in similar community composition and NPP as the control. These results indicate that pioneer communities may experience shifts due to nutrient enrichment, and/or oil pollution. However, the timing and duration of an event will influence recovery trajectories requiring further study.
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Affiliation(s)
- Ann Marie Hulver
- King Abdullah University of Science and Technology (KAUST), Red Sea Research Center (RSRC), Division of Biological and Environmental Science and Engineering (BESE), Thuwal 23955-6900, Saudi Arabia; The Ohio State University (OSU), School of Earth Sciences, Columbus, OH 43210, USA.
| | - Alexandra Steckbauer
- King Abdullah University of Science and Technology (KAUST), Red Sea Research Center (RSRC), Division of Biological and Environmental Science and Engineering (BESE), Thuwal 23955-6900, Saudi Arabia; King Abdullah University of Science and Technology (KAUST), Computational Bioscience Research Center (CBRC), Thuwal 23955-6900, Saudi Arabia
| | - Joanne I Ellis
- King Abdullah University of Science and Technology (KAUST), Red Sea Research Center (RSRC), Division of Biological and Environmental Science and Engineering (BESE), Thuwal 23955-6900, Saudi Arabia; University of Waikato, School of Biological Sciences, Tauranga 3110, New Zealand
| | - Eva Aylagas
- King Abdullah University of Science and Technology (KAUST), Red Sea Research Center (RSRC), Division of Biological and Environmental Science and Engineering (BESE), Thuwal 23955-6900, Saudi Arabia
| | - Florian Roth
- Baltic Sea Centre, Stockholm University, Stockholm, Sweden; Faculty of Biological and Environmental Sciences, Tvärminne Zoological Station, University of Helsinki, Helsinki, Finland
| | - Najeh Kharbatia
- King Abdullah University of Science and Technology (KAUST), Analytical Chemistry Core Lab Facilities, Thuwal 23955-6900, Saudi Arabia
| | - Timothy Thomson
- University of Waikato, School of Biological Sciences, Tauranga 3110, New Zealand
| | - Susana Carvalho
- King Abdullah University of Science and Technology (KAUST), Red Sea Research Center (RSRC), Division of Biological and Environmental Science and Engineering (BESE), Thuwal 23955-6900, Saudi Arabia
| | - Burton H Jones
- King Abdullah University of Science and Technology (KAUST), Red Sea Research Center (RSRC), Division of Biological and Environmental Science and Engineering (BESE), Thuwal 23955-6900, Saudi Arabia
| | - Michael L Berumen
- King Abdullah University of Science and Technology (KAUST), Red Sea Research Center (RSRC), Division of Biological and Environmental Science and Engineering (BESE), Thuwal 23955-6900, Saudi Arabia
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Nordborg FM, Brinkman DL, Negri AP. Coral recruits are highly sensitive to heavy fuel oil exposure both in the presence and absence of UV light. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 309:119799. [PMID: 35863709 DOI: 10.1016/j.envpol.2022.119799] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 07/02/2022] [Accepted: 07/13/2022] [Indexed: 06/15/2023]
Abstract
Oil pollution remains a prominent local hazard to coral reefs, but the sensitivity of some coral life stages to oil exposure remains unstudied. Exposure to ultraviolet radiation (UVR), ubiquitous on coral reefs, may significantly increase oil toxicity towards these critical habitat-forming taxa. Here we present the first data on the sensitivity of two distinct post-settlement life stages of the model coral species Acropora millepora to a heavy fuel oil (HFO) water accommodated fraction (WAF) in the absence and presence of UVR. Assessment of lethal and sublethal endpoints indicates that both 1-week-old and 2-month-old recruits (1-wo and 2-mo) were negatively affected by chronic exposures to HFO (7 and 14 days, respectively). Relative growth (1-wo and 2-mo recruits) and survival (1-wo recruits) at end of exposure were the most sensitive endpoints in the absence of UVR, with no effect concentrations (NEC) of 34.3, 5.7 and 29.3 μg L-1 total aromatic hydrocarbons (TAH; ∑39 monocyclic- and polycyclic aromatic hydrocarbons), respectively. On average, UVR increased the negative effects by 10% for affected endpoints, and latent effects of exposure were evident for relative growth and symbiont uptake of recruits. Other sublethal endpoints, including maximum quantum yield and tissue colour score, were unaffected by chronic HFO exposure. A comparison of putative species-specific sensitivity constants for these ecologically relevant endpoints, indicates A. millepora recruits may be as sensitive as the most sensitive species currently included in oil toxicity databases. While the low intensity UVR only significantly increased the negative effects of the oil for one endpoint, the majority of endpoints showed trends towards increased toxicity in the presence of UVR. Therefore, the data presented here further support the standard incorporation of UVR in oil toxicity testing for tropical corals.
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Affiliation(s)
- F Mikaela Nordborg
- AIMS@JCU, Division of Research & Innovation, James Cook University and Australian Institute of Marine Science, Townsville, 4810, Queensland, Australia; College of Science & Engineering, Division of Tropical Environments and Societies, James Cook University, Townsville, 4810, Queensland, Australia; Australian Institute of Marine Science, Townsville, 4810, Queensland, Australia.
| | - Diane L Brinkman
- Australian Institute of Marine Science, Townsville, 4810, Queensland, Australia
| | - Andrew P Negri
- AIMS@JCU, Division of Research & Innovation, James Cook University and Australian Institute of Marine Science, Townsville, 4810, Queensland, Australia; Australian Institute of Marine Science, Townsville, 4810, Queensland, Australia
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Renegar DA, Schuler PA, Knap AH, Dodge RE. TRopical Oil Pollution Investigations in Coastal Systems [TROPICS]: A synopsis of impacts and recovery. MARINE POLLUTION BULLETIN 2022; 181:113880. [PMID: 35843160 DOI: 10.1016/j.marpolbul.2022.113880] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 06/17/2022] [Accepted: 06/21/2022] [Indexed: 06/15/2023]
Abstract
The TRopical Oil Pollution Investigations in Coastal Systems (TROPICS) experiment, conducted on the Caribbean coast of Panama, has become one of the most comprehensive field experiments examining the long-term impacts of oil and dispersed oil exposures in nearshore tropical marine environments. From the initial experiment through more than three decades of study and data collection visits, the intertidal and subtidal communities have exhibited significantly different impact and recovery regimes, depending on whether the sites were exposed to crude oil only or crude oil treated with a chemical dispersant. This review provides a synopsis of the original experiment and a cumulative summary of the results and observations, illustrating the environmental and ecosystem trade-offs of chemical dispersant use in mangrove, seagrass, and coral reef environments.
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Affiliation(s)
- D Abigail Renegar
- Nova Southeastern University, Halmos College of Arts and Sciences, 8000 North Ocean Drive, Dania, FL, USA.
| | - Paul A Schuler
- Oil Spill Response Limited, 2381 Stirling Road, Fort Lauderdale, FL 33312, USA
| | - Anthony H Knap
- Texas A&M University, Geochemical and Environmental Research Group, College Station, TX 77845, USA
| | - Richard E Dodge
- Nova Southeastern University, Halmos College of Arts and Sciences, 8000 North Ocean Drive, Dania, FL, USA
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Towards the Development of Standardized Bioassays for Corals: Acute Toxicity of the UV Filter Benzophenone-3 to Scleractinian Coral Larvae. TOXICS 2022; 10:toxics10050244. [PMID: 35622657 PMCID: PMC9146638 DOI: 10.3390/toxics10050244] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 05/06/2022] [Accepted: 05/07/2022] [Indexed: 12/28/2022]
Abstract
Coral reefs have been declining globally at a historically unprecedented rate. Ultraviolet (UV) filters used in sunscreens may contribute to this decline at local scales, which has already led to bans on various organic UV filters in some regions. However, the underlying studies for these bans demonstrated significant flaws in the experimental design due to a lack of validated and standardized testing methods for corals. This study aimed to investigate options for the development of a standard acute toxicity test for the larval stage of scleractinian corals. Planula larvae of two brooding (Leptastrea purpurea and Tubastraea faulkneri) and two spawning (Acropora digitifera and A. millepora) species were exposed to the organic UV filter benzophenone-3 (BP3) for 48 h under static conditions. We observed interspecific variations in toxicity, with A. digitifera being the most sensitive (LC50 = 0.75 µg L−1) and T. faulkneri the least sensitive (LC50 = 2951.24 µg L−1) species. Inhibition of settlement was found to be a useful endpoint leading to an EC50 of 1.84 µg L−1 in L. purpurea larvae. Although the analytical challenges of measuring lipophilic substances in small volume test setups remain, the here applied test design and selected endpoints are suitable for further validation and subsequent standardization.
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10
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Trumbauer W, Grace SP, Rodrigues LJ. Seasonal variation in the bioaccumulation of potentially toxic metals in the tissues of Astrangia poculata in the northeastern United States. MARINE POLLUTION BULLETIN 2022; 174:113180. [PMID: 34871902 DOI: 10.1016/j.marpolbul.2021.113180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 11/18/2021] [Accepted: 11/19/2021] [Indexed: 06/13/2023]
Abstract
Astrangia poculata inhabits coasts near dense human populations in the northeastern United States and may be exposed to elevated pollutants. No studies have assessed heavy metal concentration in temperate corals despite their proximity to anthropogenic activity. We collected colonies four times in one year and analyzed coral tissue for As, Cd, Cr, Pb, and Zn. Most heavy metals except for As were 1.5-3.3 times lower in summer compared to other seasons. Pb, As, and Cd were three orders of magnitude higher than concentrations for other Narragansett Bay benthic species, suggesting that A. poculata bioaccumulates more readily and/or inhabits more contaminated areas of the Bay. Zn, Pb, and As had similar concentrations to tropical corals inhabiting anthropogenically polluted sites. While physiological impacts are unknown, this population of A. poculata may have a higher tolerance for heavy metal pollution than most scleractinians, making it an interesting candidate for future studies.
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Affiliation(s)
- Wolfgang Trumbauer
- Department of Geography and the Environment, Villanova University, 800 Lancaster Avenue, Villanova, PA 19085, USA
| | - Sean P Grace
- Department of Biology, Werth Center for Coastal and Marine Studies, Southern Connecticut State University, 501 Crescent Street, New Haven, CT 06515, USA
| | - Lisa J Rodrigues
- Department of Geography and the Environment, Villanova University, 800 Lancaster Avenue, Villanova, PA 19085, USA.
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11
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Conway AJ, Gonsior M, Clark C, Heyes A, Mitchelmore CL. Acute toxicity of the UV filter oxybenzone to the coral Galaxea fascicularis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 796:148666. [PMID: 34273823 DOI: 10.1016/j.scitotenv.2021.148666] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 06/20/2021] [Accepted: 06/21/2021] [Indexed: 06/13/2023]
Abstract
Coral reefs are impacted by a variety of anthropogenic stressors including inputs of chemical contaminants. Although data is currently limited, sunscreens containing ultraviolet (UV) filters have recently been suggested as an emerging class of chemical contaminants. To provide further data on the toxicity of the UV filter oxybenzone (benzophenone-3 or BP-3) to corals, we conducted three independent acute toxicity tests exposing the colonial stony coral Galaxea fascicularis to BP-3 (0.31 to 10 mg/L nominal concentrations). Assessments included daily analytical verification of the exposure concentrations, calculation of the lethal concentration to result in 50% mortality (LC50) and numerous biological endpoints to further investigate the potential impact to both the coral and symbiont. LC50s for the three tests were similar and averaged 6.53 ± 0.47 mg/L nominal concentration BP-3 (4.45 mg/L measured dissolved BP-3). BP-3 did not initiate coral bleaching or show a significant loss of symbionts from the coral tissue in this species as reductions in measurements used for bleaching (i.e. visual color, color saturation and photosynthetic pigment concentrations) were only seen concurrently with tissue loss (i.e. at ≥2.5 mg/L nominal concentration BP-3). Polyp retraction, the most sensitive endpoint of this test, was seen to be a sub-lethal behavioral response to BP-3 exposure. Using the calculated LC50 with measured concentrations from a high-quality UV filter monitoring study in Hawaii, a preliminary, conservative risk quotient for BP-3 was calculated at 0.032. These results suggest that BP-3 likely does not pose an acute risk of mortality to G. fascicularis and additional testing is required to determine sublethal impacts of BP-3 under environmentally relevant concentrations and longer-term chronic exposures. This study highlights complications in conducting toxicity tests with organic UV filters including under-estimations of exposure concentrations and provides recommendations to improve these methods for better comparisons between studies.
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Affiliation(s)
- Annaleise J Conway
- University of Maryland Center for Environmental Science, Chesapeake Biological Laboratory, 146 Williams Street, Solomons, MD 20688, USA
| | - Michael Gonsior
- University of Maryland Center for Environmental Science, Chesapeake Biological Laboratory, 146 Williams Street, Solomons, MD 20688, USA
| | - Cheryl Clark
- University of Maryland Center for Environmental Science, Chesapeake Biological Laboratory, 146 Williams Street, Solomons, MD 20688, USA
| | - Andrew Heyes
- University of Maryland Center for Environmental Science, Chesapeake Biological Laboratory, 146 Williams Street, Solomons, MD 20688, USA
| | - Carys L Mitchelmore
- University of Maryland Center for Environmental Science, Chesapeake Biological Laboratory, 146 Williams Street, Solomons, MD 20688, USA.
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12
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Yamashiro H, Fukumori H, Aini SN, Hirose Y. Snails associated with the coral-killing sponge Terpios hoshinota in Okinawa Island, Japan. Sci Rep 2021; 11:20709. [PMID: 34671070 PMCID: PMC8528886 DOI: 10.1038/s41598-021-00185-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 10/07/2021] [Indexed: 12/03/2022] Open
Abstract
Terpios hoshinota is a thin encrusting sponge that overgrows live scleractinian corals and it is linked to coral loss in many reefs. However, our knowledge of the species associated with this sponge species is poor. During a periodical survey of T. hoshinota in 2020, we found tiny snails crawling on the sponge in the subtropical waters around Okinawa Island, Japan. We observed egg capsules inside the sponge tissue and veliger larvae released from the egg capsules. Molecular analyses of both the snails and veliger larvae (cytochrome oxidase I, COI) showed that they were identical and belonged to Joculator sp. (family Cerithiopsidae). There was no direct observation of predation on the sponge by this snail; however, to the best of our knowledge, this is the first report on a close association between a snail and the sponge T. hoshinota.
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Affiliation(s)
- Hideyuki Yamashiro
- Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus, Sesoko 3422, Motobu-cho, Okinawa, 905-0227, Japan.
| | - Hiroaki Fukumori
- Sesoko Station, Tropical Biosphere Research Center, University of the Ryukyus, Sesoko 3422, Motobu-cho, Okinawa, 905-0227, Japan.,Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Chiba, Japan
| | - Siti Nurul Aini
- Graduate School of Engineering and Science, University of the Ryukyus, Nishihara, Okinawa, Japan
| | - Yurika Hirose
- Graduate School of Engineering and Science, University of the Ryukyus, Nishihara, Okinawa, Japan.,Environmental Partnership Council, Tokyo, Japan
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13
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Turner NR, Parkerton TF, Renegar DA. Toxicity of two representative petroleum hydrocarbons, toluene and phenanthrene, to five Atlantic coral species. MARINE POLLUTION BULLETIN 2021; 169:112560. [PMID: 34091251 DOI: 10.1016/j.marpolbul.2021.112560] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 05/24/2021] [Accepted: 05/26/2021] [Indexed: 06/12/2023]
Abstract
Coral reefs are keystone coastal ecosystems that can be exposed to petroleum hydrocarbons from multiple sources, and when selecting spill response methods to limit environmental damages, corals represent one of the highest valued resources for protection. Because previous research to characterize the sensitivity of coral species to petroleum hydrocarbon exposures is limited, a continuous-flow passive dosing system and toxicity testing protocol was designed to evaluate the acute effects of two representative petroleum compounds, toluene and phenanthrene, on five coral species: Acropora cervicornis, Porites astreoides, Siderastera siderea, Stephanocoenia intersepta, and Solenastrea bournoni. Using analytically confirmed exposures, sublethal and lethal endpoints were calculated for each species, and used as model inputs to determine critical target lipid body burdens (CTLBBs) for characterizing species sensitivity. Further, quantification of the time-dependent toxicity of single hydrocarbon exposures is described to provide model inputs for improved simulation of spill impacts to corals in coastal tropical environments.
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Affiliation(s)
- Nicholas R Turner
- Nova Southeastern University, Halmos College of Arts and Sciences, Dania, FL, USA.
| | | | - D Abigail Renegar
- Nova Southeastern University, Halmos College of Arts and Sciences, Dania, FL, USA
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14
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Bhagooli R, Mattan-Moorgawa S, Kaullysing D, Louis YD, Gopeechund A, Ramah S, Soondur M, Pilly SS, Beesoo R, Wijayanti DP, Bachok ZB, Monrás VC, Casareto BE, Suzuki Y, Baker AC. Chlorophyll fluorescence - A tool to assess photosynthetic performance and stress photophysiology in symbiotic marine invertebrates and seaplants. MARINE POLLUTION BULLETIN 2021; 165:112059. [PMID: 33677415 DOI: 10.1016/j.marpolbul.2021.112059] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/25/2019] [Revised: 12/30/2020] [Accepted: 01/01/2021] [Indexed: 06/12/2023]
Abstract
Chlorophyll a fluorescence is increasingly being used as a rapid, non-invasive, sensitive and convenient indicator of photosynthetic performance in marine autotrophs. This review presents the methodology, applications and limitations of chlorophyll fluorescence in marine studies. The various chlorophyll fluorescence tools such as Pulse-Amplitude-Modulated (PAM) and Fast Repetition Rate (FRR) fluorometry used in marine scientific studies are discussed. Various commonly employed chlorophyll fluorescence parameters are elaborated. The application of chlorophyll fluorescence in measuring natural variations, stress, stress tolerance and acclimation/adaptation to changing environment in primary producers such as microalgae, macroalgae, seagrasses and mangroves, and marine symbiotic invertebrates, namely symbiotic sponges, hard corals and sea anemones, kleptoplastic sea slugs and giant clams is critically assessed. Stressors include environmental, biological, physical and chemical ones. The strengths, limitations and future perspectives of the use of chlorophyll fluorescence technique as an assessment tool in symbiotic marine organisms and seaplants are discussed.
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Affiliation(s)
- Ranjeet Bhagooli
- Department of Biosciences & Ocean Studies, Faculty of Science & Pole of Research Excellence, Sustainable Marine Biodiversity Research Group, University of Mauritius, Réduit 80837, Mauritius; The Biodiversity and Environment Institute, Réduit, Mauritius; The Society of Biology (Mauritius), Réduit, Mauritius; Institute of Oceanography and Environment (INOS), Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Terengganu, Malaysia.
| | - Sushma Mattan-Moorgawa
- Department of Biosciences & Ocean Studies, Faculty of Science & Pole of Research Excellence, Sustainable Marine Biodiversity Research Group, University of Mauritius, Réduit 80837, Mauritius; The Biodiversity and Environment Institute, Réduit, Mauritius
| | - Deepeeka Kaullysing
- Department of Biosciences & Ocean Studies, Faculty of Science & Pole of Research Excellence, Sustainable Marine Biodiversity Research Group, University of Mauritius, Réduit 80837, Mauritius; The Biodiversity and Environment Institute, Réduit, Mauritius
| | - Yohan Didier Louis
- Department of Biosciences & Ocean Studies, Faculty of Science & Pole of Research Excellence, Sustainable Marine Biodiversity Research Group, University of Mauritius, Réduit 80837, Mauritius
| | - Arvind Gopeechund
- Department of Biosciences & Ocean Studies, Faculty of Science & Pole of Research Excellence, Sustainable Marine Biodiversity Research Group, University of Mauritius, Réduit 80837, Mauritius; The Biodiversity and Environment Institute, Réduit, Mauritius
| | - Sundy Ramah
- Department of Biosciences & Ocean Studies, Faculty of Science & Pole of Research Excellence, Sustainable Marine Biodiversity Research Group, University of Mauritius, Réduit 80837, Mauritius
| | - Mouneshwar Soondur
- Department of Biosciences & Ocean Studies, Faculty of Science & Pole of Research Excellence, Sustainable Marine Biodiversity Research Group, University of Mauritius, Réduit 80837, Mauritius; The Biodiversity and Environment Institute, Réduit, Mauritius
| | - Sivajyodee Sannassy Pilly
- Department of Biosciences & Ocean Studies, Faculty of Science & Pole of Research Excellence, Sustainable Marine Biodiversity Research Group, University of Mauritius, Réduit 80837, Mauritius
| | - Rima Beesoo
- Department of Biosciences & Ocean Studies, Faculty of Science & Pole of Research Excellence, Sustainable Marine Biodiversity Research Group, University of Mauritius, Réduit 80837, Mauritius
| | | | - Zainudin Bin Bachok
- Institute of Oceanography and Environment (INOS), Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Terengganu, Malaysia
| | - Víctor Cubillos Monrás
- Instituto de Ciencias Marinas y Limnológicas, Laboratorio Costero de Recursos Acuáticos de Calfuco, Universidad Austral de Chile, Valdivia, Chile
| | | | - Yoshimi Suzuki
- Shizuoka University, 836 Oya, Suruga, Shizuoka, Shizuoka, Japan
| | - Andrew Charles Baker
- Department of Marine Biology and Ecology, Rosenstiel School of Marine and Atmospheric Science, University of Miami, 4600 Rickenbacker Causeway, Miami, FL 33149, USA
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15
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Renegar DA, Turner NR. Species sensitivity assessment of five Atlantic scleractinian coral species to 1-methylnaphthalene. Sci Rep 2021; 11:529. [PMID: 33436804 PMCID: PMC7804185 DOI: 10.1038/s41598-020-80055-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Accepted: 12/11/2020] [Indexed: 12/27/2022] Open
Abstract
Coral reefs are keystone coastal ecosystems that are at risk of exposure to petroleum from a range of sources, and are one of the highest valued natural resources for protection in Net Environmental Benefit Analysis (NEBA) in oil spill response. Previous research evaluating dissolved hydrocarbon impacts to corals reflected no clear characterization of sensitivity, representing an important knowledge gap in oil spill preparedness related to the potential impact of oil spills to the coral animal and its photosymbiont zooxanthellae. This research addresses this gap, using a standardized toxicity protocol to evaluate effects of a dissolved reference hydrocarbon on scleractinian corals. The relative sensitivity of five Atlantic scleractinian coral species to hydrocarbon exposure was assessed with 48-h assays using the reference polycyclic aromatic hydrocarbon 1-methylnaphthalene, based on physical coral condition, mortality, and photosynthetic efficiency. The threatened staghorn coral Acropora cervicornis was found to be the most sensitive to 1-methylnaphthalene exposure. Overall, the acute and subacute endpoints indicated that the tested coral species were comparatively more resilient to hydrocarbon exposure than other marine species. These results provide a framework for the prediction of oil spill impacts and impact thresholds on the coral animal and related habitats, essential for informing oil spill response in coastal tropical environments.
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Affiliation(s)
- D Abigail Renegar
- Nova Southeastern University, Halmos College of Natural Sciences and Oceanography, Dania, FL, USA.
| | - Nicholas R Turner
- Nova Southeastern University, Halmos College of Natural Sciences and Oceanography, Dania, FL, USA
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