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Duncan EM, Vieira N, González-Irusta JM, Dominguez-Carrió C, Morato T, Carreiro-Silva M, Jakobsen J, Jakobsen K, Porteiro F, Schläpfer N, Herrera L, Ramos M, Rodríguez Y, Pereira JM, Fauconnet L, Rodrigues L, Parra H, Pham CK. Predicting the distribution and abundance of abandoned, lost or discarded fishing gear (ALDFG) in the deep sea of the Azores (North Atlantic). Sci Total Environ 2023; 900:166579. [PMID: 37652373 DOI: 10.1016/j.scitotenv.2023.166579] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 08/04/2023] [Accepted: 08/24/2023] [Indexed: 09/02/2023]
Abstract
Abandoned, lost, or discarded fishing gear (ALDFG), represents a significant percentage of the global plastic pollution, currently considered one of the major sources from sea-based activities. However, there is still limited understanding of the quantities of ALDFG present on the seafloor and their impacts. In this study, data on the presence of ALDFG was obtained from a large archive of seafloor video footage (351 dives) collected by different imaging platforms in the Azores region over 15 years (2006-2020). Most ALDFG items observed in the images relate to the local bottom longline fishery operating in the region, and include longlines but also anchors, weights, cables and buoys. A generalized additive mixed model (GAMM) was used to predict the distribution and abundance of ALDFG over the seafloor within the limits of the Azores Exclusive Economic Zone (EEZ) using a suite of environmental and anthropogenic variables. We estimated an average of 113 ± 310 items km-2 (597 ± 756 per km-2 above 1000 m depth), which could imply that over 20 million ALDFG items are present on the deep seafloor of the Azores EEZ. The resulting model identified potential hotspots of ALDFG along the seabed, some of them located over sensitive benthic habitats, such as specific seamounts. In addition, the interactions between ALDFG and benthic organisms were also analysed. Numerous entanglements were observed with several species of large anthozoans and sponges. The use of predictive distribution modelling for ALDFG should be regarded as a useful tool to support ecosystem-based management, which can provide indirect information about fishing pressure and allow the identification of potential high-risk areas. Additional knowledge about the sources, amounts, fates and impacts of ALDFG will be key to address the global issue of plastic pollution and the effects of fishing on marine ecosystems.
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Affiliation(s)
- Emily M Duncan
- Instituto de Investigação em Ciências do Mar - OKEANOS, Universidade dos Açores, Horta, Portugal
| | - Nina Vieira
- Instituto de Investigação em Ciências do Mar - OKEANOS, Universidade dos Açores, Horta, Portugal
| | | | - Carlos Dominguez-Carrió
- Instituto de Investigação em Ciências do Mar - OKEANOS, Universidade dos Açores, Horta, Portugal; IMAR Instituto do Mar, Universidade dos Açores, Horta, Portugal
| | - Telmo Morato
- Instituto de Investigação em Ciências do Mar - OKEANOS, Universidade dos Açores, Horta, Portugal; IMAR Instituto do Mar, Universidade dos Açores, Horta, Portugal
| | - Marina Carreiro-Silva
- Instituto de Investigação em Ciências do Mar - OKEANOS, Universidade dos Açores, Horta, Portugal; IMAR Instituto do Mar, Universidade dos Açores, Horta, Portugal
| | | | | | - Filipe Porteiro
- Instituto de Investigação em Ciências do Mar - OKEANOS, Universidade dos Açores, Horta, Portugal
| | - Nina Schläpfer
- Instituto de Investigação em Ciências do Mar - OKEANOS, Universidade dos Açores, Horta, Portugal
| | - Laura Herrera
- Instituto de Investigação em Ciências do Mar - OKEANOS, Universidade dos Açores, Horta, Portugal
| | - Manuela Ramos
- Instituto de Investigação em Ciências do Mar - OKEANOS, Universidade dos Açores, Horta, Portugal; IMAR Instituto do Mar, Universidade dos Açores, Horta, Portugal
| | - Yasmina Rodríguez
- Instituto de Investigação em Ciências do Mar - OKEANOS, Universidade dos Açores, Horta, Portugal
| | - João M Pereira
- Instituto de Investigação em Ciências do Mar - OKEANOS, Universidade dos Açores, Horta, Portugal
| | - Laurence Fauconnet
- Instituto de Investigação em Ciências do Mar - OKEANOS, Universidade dos Açores, Horta, Portugal
| | - Luís Rodrigues
- Instituto de Investigação em Ciências do Mar - OKEANOS, Universidade dos Açores, Horta, Portugal; IMAR Instituto do Mar, Universidade dos Açores, Horta, Portugal
| | - Hugo Parra
- Instituto de Investigação em Ciências do Mar - OKEANOS, Universidade dos Açores, Horta, Portugal
| | - Christopher K Pham
- Instituto de Investigação em Ciências do Mar - OKEANOS, Universidade dos Açores, Horta, Portugal.
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Ferguson DK, Li C, Chakraborty A, Gittins DA, Fowler M, Webb J, Campbell C, Morrison N, MacDonald A, Hubert CRJ. Multi-year seabed environmental baseline in deep-sea offshore oil prospective areas established using microbial biodiversity. Mar Pollut Bull 2023; 194:115308. [PMID: 37517246 DOI: 10.1016/j.marpolbul.2023.115308] [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: 02/16/2023] [Revised: 07/14/2023] [Accepted: 07/16/2023] [Indexed: 08/01/2023]
Abstract
Microorganisms are the ocean's first responders to marine pollution events, yet baseline studies rarely focus on microbial communities. Temporal and spatial microbial biodiversity baselines were established using bacterial 16S rRNA gene amplicon sequencing of seafloor sediments in a deep-water oil prospective area along the Scotian Slope off Canada's east coast sampled during 2015-2018. Bacterial diversity was generally similar in space and time, with members of the family Woeseiaceae detected consistently in >1 % relative abundance, similar to seabed sediments in other parts of the world. Anomalous biodiversity results at one site featured lower Woeseiaceae as well as higher levels of bacterial groups specifically associated with cold seeps such as Aminicenantes. This was unexpected given that site selection was based on sediment geochemistry not revealing any petroleum hydrocarbons in these locations. This finding highlights the sensitivity and specificity of microbial DNA sequencing in environmental monitoring. Microbiome assessments like this one represent an important strategy for incorporating microbial biodiversity as a new and useful metric for establishing robust environmental baselines that are necessary for understanding ecosystem responses to marine pollution.
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Affiliation(s)
- Deidra K Ferguson
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, Canada.
| | - Carmen Li
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Anirban Chakraborty
- Department of Biological Sciences, Idaho State University, Pocatello, ID, USA
| | - Daniel A Gittins
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, Canada
| | - Martin Fowler
- Applied Petroleum Technology Canada, Calgary, Alberta, Canada
| | - Jamie Webb
- Applied Petroleum Technology Canada, Calgary, Alberta, Canada
| | - Calvin Campbell
- Natural Resources Canada, Geological Survey of Canada-Atlantic, Dartmouth, Nova Scotia, Canada
| | - Natasha Morrison
- Nova Scotia Department of Natural Resources and Renewables, Government of Nova Scotia, Halifax, Nova Scotia, Canada
| | - Adam MacDonald
- Nova Scotia Department of Natural Resources and Renewables, Government of Nova Scotia, Halifax, Nova Scotia, Canada
| | - Casey R J Hubert
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, Canada.
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Gorrasi S, Franzetti A, Brandt A, Minzlaff U, Pasqualetti M, Fenice M. Insights into the prokaryotic communities of the abyssal-hadal benthic-boundary layer of the Kuril Kamchatka Trench. Environ Microbiome 2023; 18:67. [PMID: 37533108 PMCID: PMC10398949 DOI: 10.1186/s40793-023-00522-9] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 07/14/2023] [Indexed: 08/04/2023]
Abstract
BACKGROUND The Kuril-Kamchatka Trench (maximum depth 9604 m), located in the NW Pacific Ocean, is among the top seven deepest hadal trenches. The work aimed to investigate the unexplored abyssal-hadal prokaryotic communities of this fascinating, but underrated environment. RESULTS As for the bacterial communities, we found that Proteobacteria (56.1-74.5%), Bacteroidetes (6.5-19.1%), and Actinobacteria (0.9-16.1%) were the most represented bacterial phyla over all samples. Thaumarchaeota (52.9-91.1%) was the most abundant phylum in the archaeal communities. The archaeal diversity was highly represented by the ammonia-oxidizing Nitrosopumilus, and the potential hydrocarbon-degrading bacteria Acinetobacter, Zhongshania, and Colwellia were the main bacterial genera. The α-diversity analysis evidenced that both prokaryotic communities were characterized by low evenness, as indicated by the high Gini index values (> 0.9). The β-diversity analysis (Redundancy Analysis) indicated that, as expected, the depth significantly affected the structure of the prokaryotic communities. The co-occurrence network revealed seven prokaryotic groups that covaried across the abyssal-hadal zone of the Kuril-Kamchatka Trench. Among them, the main group included the most abundant archaeal and bacterial OTUs (Nitrosopumilus OTU A2 and OTU A1; Acinetobacter OTU B1), which were ubiquitous across the trench. CONCLUSIONS This manuscript represents the first attempt to characterize the prokaryotic communities of the KKT abyssal-hadal zone. Our results reveal that the most abundant prokaryotes harbored by the abyssal-hadal zone of Kuril-Kamchatka Trench were chemolithotrophic archaea and heterotrophic bacteria, which did not show a distinctive pattern distribution according to depth. In particular, Acinetobacter, Zhongshania, and Colwellia (potential hydrocarbon degraders) were the main bacterial genera, and Nitrosopumilus (ammonia oxidizer) was the dominant representative of the archaeal diversity.
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Affiliation(s)
- Susanna Gorrasi
- Laboratory of Microbiology, Department of Ecological and Biological Sciences, University of Tuscia, Viterbo, 01100, Italy.
| | - Andrea Franzetti
- Laboratory of Microbiology, Department of Earth and Environmental Sciences, University of Milano-Bicocca, Milano, 20126, Italy
| | - Angelika Brandt
- Senckenberg Research Institute and Natural History Museum, 60325, Frankfurt am Main, Germany
- Institute of Ecology, Diversity and Evolution, Goethe University, 60438, Frankfurt am Main, Germany
| | - Ulrike Minzlaff
- Institute of Ecology, Diversity and Evolution, Goethe University, 60438, Frankfurt am Main, Germany
| | - Marcella Pasqualetti
- Laboratory of Ecology of Marine Fungi - CoNISMa, Department of Ecological and Biological Sciences, University of Tuscia, Viterbo, 01100, Italy
| | - Massimiliano Fenice
- Laboratory of Microbiology, Department of Ecological and Biological Sciences, University of Tuscia, Viterbo, 01100, Italy.
- Laboratory of Applied Marine Microbiology - CoNISMa, Department of Ecological and Biological Sciences, University of Tuscia, Viterbo, 01100, Italy.
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Vaga CF, Seiblitz IGL, Capel KCC, Kitahara MV. The mitochondrial genomes of Crispatotrochus rubescens and Crispatotrochus rugosus (Hexacorallia; Scleractinia): new insights on the phylogeny of the family Caryophylliidae. Mol Biol Rep 2022; 49:12269-12273. [PMID: 36264418 DOI: 10.1007/s11033-022-08029-1] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Accepted: 10/12/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND Caryophylliidae is one of the most diverse scleractinian families, however it was recovered as polyphyletic in multiple molecular studies. Recently, the mitochondrial gene order was proposed as a character for a taxonomic revision of the family. Here we describe the first mitogenome of the caryophylliid genus Crispatotrochus, whose phylogenetic position remains uncertain. METHODS AND RESULTS The complete mitochondrial genomes of Crispatotrochus rubescens and Crispatotrochus rugosus were sequenced, assembled, and annotated. The two mitogenomes are identical and circular, have a length of 16,536 bp, a GC content of 35.9%, and contain 13 protein-coding genes, 2 ribosomal RNAs and 2 transfer RNAs. Both species have a transposition of a three gene block - cob, nad2, and nad6 - similarly to a group of caryophylliid genera that were recovered as monophyletic, including the type genus (Caryophyllia) of the family. The phylogenetic analyses recovered Crispatotrochus within the clade that presents the gene rearrangement and specifically as sister taxa of the genus Caryophyllia, a result consistent with previous studies and the similar gross morphology of the two genera. CONCLUSIONS We determined the mitochondrial genomes of the genus Crispatotrochus to investigate their relations within Scleractinia. Results from this study provide insights on the phylogenetic position of the genus and corroborate that the mitochondrial gene order could be used as taxonomic character for the family Caryophylliidae.
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Affiliation(s)
- C F Vaga
- Centre for Marine Biology, University of Sao Paulo, Sao Sebastiao, 11612-109, Brazil. .,Graduate Program in Zoology, Department of Zoology, Institute of Biosciences, University of Sao Paulo, Sao Paulo, 05508-090, Brazil.
| | - I G L Seiblitz
- Centre for Marine Biology, University of Sao Paulo, Sao Sebastiao, 11612-109, Brazil.,Graduate Program in Zoology, Department of Zoology, Institute of Biosciences, University of Sao Paulo, Sao Paulo, 05508-090, Brazil
| | - K C C Capel
- Centre for Marine Biology, University of Sao Paulo, Sao Sebastiao, 11612-109, Brazil.,Department of Marine Science, Federal University of Sao Paulo, Santos, 11070-100, Brazil
| | - M V Kitahara
- Centre for Marine Biology, University of Sao Paulo, Sao Sebastiao, 11612-109, Brazil.,Department of Invertebrate Zoology, Smithsonian Institution, National Museum of Natural History, MRC 163, PO Box 37012, Washington, DC, 20013-7012, USA
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5
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Carreras-Colom E, Constenla M, Soler-Membrives A, Cartes JE, Baeza M, Padrós F, Carrassón M. Spatial occurrence and effects of microplastic ingestion on the deep-water shrimp Aristeus antennatus. Mar Pollut Bull 2018; 133:44-52. [PMID: 30041334 DOI: 10.1016/j.marpolbul.2018.05.012] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [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: 04/13/2018] [Revised: 05/06/2018] [Accepted: 05/07/2018] [Indexed: 05/07/2023]
Abstract
Microplastic (MP) ingestion has been reported in a wide variety of organisms, however, its spatial occurrence and effects on wild populations remain quite unknown. The present study targets an economically and ecologically key species in the Mediterranean Sea, the shrimp Aristeus antennatus. 39.2% of the individuals sampled had MP in their stomachs, albeit in areas close to Barcelona city the percentage reached values of 100%. Overall, MP ingestion was confirmed in a wide spatial and depth (630-1870 m) range, pointing out the great dispersion of this pollutant. The benthophagous diet and close relationship with the sea bottom of A. antennatus might enhance MP exposure and ultimately lead to accidental ingestion. Detailed analysis of shrimps' diet revealed that individuals with MP had a higher presence of endobenthic prey. Microplastic fibers are probably retained for long periods due to stomach's morphology, but no negative effects on shrimp's biological condition were observed.
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Affiliation(s)
- Ester Carreras-Colom
- Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193 Barcelona, Spain
| | - Maria Constenla
- Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193 Barcelona, Spain
| | - Anna Soler-Membrives
- Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193 Barcelona, Spain
| | - Joan E Cartes
- Institut de Ciències del Mar (ICM-CSIC), Pg. Marítim de la Barceloneta 37-49, 08003 Barcelona, Spain
| | - Mireia Baeza
- Departament de Química, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193 Barcelona, Spain
| | - Francesc Padrós
- Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193 Barcelona, Spain
| | - Maite Carrassón
- Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia, Universitat Autònoma de Barcelona, Cerdanyola del Vallès, 08193 Barcelona, Spain.
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Lawrance A, Balakrishnan M, Gunasekaran R, Srinivasan R, Valsalan VN, Gopal D, Ramalingam K. Unexplored deep sea habitats in active volcanic Barren Island, Andaman and Nicobar Islands are sources of novel halophilic eubacteria. Infect Genet Evol 2018; 65:1-5. [PMID: 29981902 DOI: 10.1016/j.meegid.2018.07.008] [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: 04/18/2018] [Revised: 06/30/2018] [Accepted: 07/05/2018] [Indexed: 11/19/2022]
Abstract
Deep Sea sediment cores were collected from the surrounding of active volcanic Barren Island, Andaman & Nicobar Islands. A total of 24 halophilic eubacteria were isolated and identified based on their biochemical and 16S rDNA sequences. Three major classes (Gamma-Proteobacteria, Alpha-Proteobacteria and Bacilli) of bacteria were detected in the deep sea sediments of active volcanic Barren Island. Among those, 37% of isolates exhibited antimicrobial activity against all tested Gram positive and Gram negative clinical pathogens. 60% of isolates revealed the presence of either PKS or NRPS genes and 65% isolates disclosed medium to higher level of cytotoxicity in MB-231 breast cancer cell line. Majority of the isolates revealed excellent potential for bioprospecting of novel byproducts with industrial and pharmaceutical importance.
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Affiliation(s)
- Anburajan Lawrance
- Andaman and Nicobar Centre for Ocean Science and Technology, Earth System Sciences Organization-National Institute of Ocean Technology (ESSO-NIOT), Port Blair 744103, Andaman and Nicobar Islands, India.
| | - Meena Balakrishnan
- Andaman and Nicobar Centre for Ocean Science and Technology, Earth System Sciences Organization-National Institute of Ocean Technology (ESSO-NIOT), Port Blair 744103, Andaman and Nicobar Islands, India
| | - Rajaprabhu Gunasekaran
- Marine Biotechnology Division, Ocean Science and Technology for Islands Group, ESSO-NIOT, Ministry of Earth Sciences, Government of India, Chennai 600100, Tamil Nadu, India
| | - Rajaguru Srinivasan
- Marine Biotechnology Division, Ocean Science and Technology for Islands Group, ESSO-NIOT, Ministry of Earth Sciences, Government of India, Chennai 600100, Tamil Nadu, India
| | - Vinithkumar Nambali Valsalan
- Andaman and Nicobar Centre for Ocean Science and Technology, Earth System Sciences Organization-National Institute of Ocean Technology (ESSO-NIOT), Port Blair 744103, Andaman and Nicobar Islands, India
| | - Dharani Gopal
- Marine Biotechnology Division, Ocean Science and Technology for Islands Group, ESSO-NIOT, Ministry of Earth Sciences, Government of India, Chennai 600100, Tamil Nadu, India
| | - Kirubagaran Ramalingam
- Marine Biotechnology Division, Ocean Science and Technology for Islands Group, ESSO-NIOT, Ministry of Earth Sciences, Government of India, Chennai 600100, Tamil Nadu, India
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Gómez S. New species of Eurycletodes Sars, 1909 and Odiliacletodes Soyer, 1964 from the deep Gulf of California (Copepoda, Harpacticoida, Argestidae). Zookeys 2018:1-25. [PMID: 29899673 PMCID: PMC5997735 DOI: 10.3897/zookeys.764.24511] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2018] [Accepted: 05/07/2018] [Indexed: 11/15/2022] Open
Abstract
To date, three species of the family Ancorabolidae, three species of the family Argestidae, and one species of the family Rhizothrichidae are known from the deep sea of the Gulf of California. The descriptions of two new species, Eurycletodesparaephippigersp. n. and Odiliacletodessecundussp. n. collected from the Southern Trough of Guaymas Basin at 1440 m and 1642 m depths, respectively, are presented herein. The closest relatives of these two species, E.ephippiger Por, 1964 and O.gracilis Soyer, 1964 are known from the Mediterranean, but some relatives have been reported also from the southern Atlantic. Eurycletodesparaephippigersp. n. is undoubtedly related to E.ephippiger Por, 1964 known from Israel and Banyuls-sur-Mer (France). These two species can be separated by the armature complement of the basis of the maxillule, by the armature complement of the syncoxa of the maxilliped, and by the relative position of the anal operculum. Odiliacletodessecundussp. n. showed to be closely related to O.gracilis Soyer, 1964 known from Banyuls-sur-Mer only. The latter two species can be separated by the armature complement of the syncoxa of the maxilliped, by the structure of the antenna, and by the inner armature complement of the third exopodal segment of the fourth swimming leg.
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Affiliation(s)
- Samuel Gómez
- Instituto de Ciencias del Mar y Limnología, Unidad Académica Mazatlán, Universidad Nacional Autónoma de México; Joel Montes Camarena s/n, Fracc. Playa Sur, Mazatlán, 82040, Sinaloa, México
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