Genetic stock composition of loggerhead turtles Caretta caretta bycaught in the pelagic waters of the North Atlantic
Sea turtle populations disperse widely across oceans and migrate between terrestrial nesting habitat and distant feeding and developmental habitats. Understanding population stock structure is important for accurately assessing threats such as mortality from fishery bycatch and for defining specific...
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ftdoajarticles:oai:doaj.org/article:8e9f6720f00a4a019986eb388327e2e7 2023-05-15T17:29:00+02:00 Genetic stock composition of loggerhead turtles Caretta caretta bycaught in the pelagic waters of the North Atlantic EL LaCasella SP Epperly MP Jensen L Stokes PH Dutton 2013-11-01T00:00:00Z https://doi.org/10.3354/esr00535 https://doaj.org/article/8e9f6720f00a4a019986eb388327e2e7 EN eng Inter-Research https://www.int-res.com/abstracts/esr/v22/n1/p73-84/ https://doaj.org/toc/1863-5407 https://doaj.org/toc/1613-4796 1863-5407 1613-4796 doi:10.3354/esr00535 https://doaj.org/article/8e9f6720f00a4a019986eb388327e2e7 Endangered Species Research, Vol 22, Iss 1, Pp 73-84 (2013) Zoology QL1-991 Botany QK1-989 article 2013 ftdoajarticles https://doi.org/10.3354/esr00535 2022-12-30T20:21:32Z Sea turtle populations disperse widely across oceans and migrate between terrestrial nesting habitat and distant feeding and developmental habitats. Understanding population stock structure is important for accurately assessing threats such as mortality from fishery bycatch and for defining specific demographic units of conservation concern. We compared 775 bp mtDNA control region haplotypes from 389 juvenile loggerhead turtles sampled as bycatch in the US pelagic longline fishery in the western North Atlantic Northeast Distant (NED) region to haplotype frequencies observed in 23 genetically distinct nesting stocks representing the 4 distinct population segments (DPSs) that have been identified throughout the Atlantic Ocean and Mediterranean Sea. We used Bayesian mixed-stock analysis to produce stock composition estimates for juvenile loggerhead turtles that use pelagic habitat in the central North Atlantic. We found that nearly all of the loggerheads caught in NED waters belonged to the Northwest Atlantic DPS (mean = 99.2%), with the majority coming from the large eastern Florida rookeries (mean = 84.0%). We also detected contributions from the western Florida rookeries (mean = 11.7%) and Mexico (mean = 3.5%) but found little evidence of contributions from the rookeries of the South Atlantic, Northeast Atlantic, or Mediterranean DPSs. These results will help improve specific threat assessments and are relevant to ongoing development of conservation plans that are aligned to the recent DPS listings for loggerheads. Article in Journal/Newspaper North Atlantic Northeast Atlantic Northwest Atlantic Directory of Open Access Journals: DOAJ Articles Endangered Species Research 22 1 73 84 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Zoology QL1-991 Botany QK1-989 |
spellingShingle |
Zoology QL1-991 Botany QK1-989 EL LaCasella SP Epperly MP Jensen L Stokes PH Dutton Genetic stock composition of loggerhead turtles Caretta caretta bycaught in the pelagic waters of the North Atlantic |
topic_facet |
Zoology QL1-991 Botany QK1-989 |
description |
Sea turtle populations disperse widely across oceans and migrate between terrestrial nesting habitat and distant feeding and developmental habitats. Understanding population stock structure is important for accurately assessing threats such as mortality from fishery bycatch and for defining specific demographic units of conservation concern. We compared 775 bp mtDNA control region haplotypes from 389 juvenile loggerhead turtles sampled as bycatch in the US pelagic longline fishery in the western North Atlantic Northeast Distant (NED) region to haplotype frequencies observed in 23 genetically distinct nesting stocks representing the 4 distinct population segments (DPSs) that have been identified throughout the Atlantic Ocean and Mediterranean Sea. We used Bayesian mixed-stock analysis to produce stock composition estimates for juvenile loggerhead turtles that use pelagic habitat in the central North Atlantic. We found that nearly all of the loggerheads caught in NED waters belonged to the Northwest Atlantic DPS (mean = 99.2%), with the majority coming from the large eastern Florida rookeries (mean = 84.0%). We also detected contributions from the western Florida rookeries (mean = 11.7%) and Mexico (mean = 3.5%) but found little evidence of contributions from the rookeries of the South Atlantic, Northeast Atlantic, or Mediterranean DPSs. These results will help improve specific threat assessments and are relevant to ongoing development of conservation plans that are aligned to the recent DPS listings for loggerheads. |
format |
Article in Journal/Newspaper |
author |
EL LaCasella SP Epperly MP Jensen L Stokes PH Dutton |
author_facet |
EL LaCasella SP Epperly MP Jensen L Stokes PH Dutton |
author_sort |
EL LaCasella |
title |
Genetic stock composition of loggerhead turtles Caretta caretta bycaught in the pelagic waters of the North Atlantic |
title_short |
Genetic stock composition of loggerhead turtles Caretta caretta bycaught in the pelagic waters of the North Atlantic |
title_full |
Genetic stock composition of loggerhead turtles Caretta caretta bycaught in the pelagic waters of the North Atlantic |
title_fullStr |
Genetic stock composition of loggerhead turtles Caretta caretta bycaught in the pelagic waters of the North Atlantic |
title_full_unstemmed |
Genetic stock composition of loggerhead turtles Caretta caretta bycaught in the pelagic waters of the North Atlantic |
title_sort |
genetic stock composition of loggerhead turtles caretta caretta bycaught in the pelagic waters of the north atlantic |
publisher |
Inter-Research |
publishDate |
2013 |
url |
https://doi.org/10.3354/esr00535 https://doaj.org/article/8e9f6720f00a4a019986eb388327e2e7 |
genre |
North Atlantic Northeast Atlantic Northwest Atlantic |
genre_facet |
North Atlantic Northeast Atlantic Northwest Atlantic |
op_source |
Endangered Species Research, Vol 22, Iss 1, Pp 73-84 (2013) |
op_relation |
https://www.int-res.com/abstracts/esr/v22/n1/p73-84/ https://doaj.org/toc/1863-5407 https://doaj.org/toc/1613-4796 1863-5407 1613-4796 doi:10.3354/esr00535 https://doaj.org/article/8e9f6720f00a4a019986eb388327e2e7 |
op_doi |
https://doi.org/10.3354/esr00535 |
container_title |
Endangered Species Research |
container_volume |
22 |
container_issue |
1 |
container_start_page |
73 |
op_container_end_page |
84 |
_version_ |
1766122317623066624 |