Origin and genetic diversity of leatherbacks (Dermochelys coriacea) at argentine foraging grounds

To conduct conservation of migratory species, such as marine turtles, is important to understand the population structure throughout the entire distribution of the species. We study the genetic composition of the leatherback turtles, Dermochelys coriacea foraging in waters off Argentina by analyzing...

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Autores principales: Prosdocimi, Laura, Remis, Maria Isabel
Publicado: 2014
Materias:
Conservation
Dermochelys coriacea
Distribution
Endangered species
Feeding grounds
Migrations
ecoregion
foraging behavior
genetic differentiation
mark-recapture method
mitochondrial DNA
nesting behavior
population structure
turtle
Argentina
Atlantic Ocean
Atlantic Ocean (South)
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00220981_v458_n_p13_Prosdocimi
http://hdl.handle.net/20.500.12110/paper_00220981_v458_n_p13_Prosdocimi
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00220981_v458_n_p13_Prosdocimi
record_format dspace
spelling paper:paper_00220981_v458_n_p13_Prosdocimi2023-06-08T14:45:49Z Origin and genetic diversity of leatherbacks (Dermochelys coriacea) at argentine foraging grounds Prosdocimi, Laura Remis, Maria Isabel Conservation Dermochelys coriacea Distribution Endangered species Feeding grounds Migrations ecoregion foraging behavior genetic differentiation mark-recapture method mitochondrial DNA nesting behavior population structure turtle Argentina Atlantic Ocean Atlantic Ocean (South) To conduct conservation of migratory species, such as marine turtles, is important to understand the population structure throughout the entire distribution of the species. We study the genetic composition of the leatherback turtles, Dermochelys coriacea foraging in waters off Argentina by analyzing 763. bp sequences of the mtDNA control region in order to determine the nesting origin of these animals. A total of 40 samples were collected from adult leatherbacks (mean 143.5; 180-123. cm curved carapace length) captured (10%) in fisheries or encountered as strandings (90%). Based on analysis of mtDNA sequences we detected 4 haplotypes, the most common (n = 26) being DC1.1, and the other two rarer DC1.3 (n = 4), DC13.1 (n = 2), and DC1.4 (n = 1). The genetic diversity was evaluated through the haplotype (0, 3712 ± 0, 1000) and nucleotide diversities (0, 000521 ± 0, 000553). Bayesian Mixed Stock Analysis (MSA) showed that the Buenos Aires foraging leatherbacks come primarily from the West African rookeries (Ghana and Gabon, mean estimate = 69% and 14% respectively). MSA results are consistent with those from mark-recapture studies, since four leatherbacks captured in Argentinean waters were adult females that were originally tagged on the nesting beaches in Gabon, West Africa. Our findings demonstrate the connection between nesting and foraging areas in the South Atlantic and illustrate the importance of the Malvinas ecoregion to the survival of migratory marine vertebrates, such as leatherbacks. © 2014 Elsevier B.V. Fil:Prosdocimi, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Remis, M.I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00220981_v458_n_p13_Prosdocimi http://hdl.handle.net/20.500.12110/paper_00220981_v458_n_p13_Prosdocimi
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Conservation
Dermochelys coriacea
Distribution
Endangered species
Feeding grounds
Migrations
ecoregion
foraging behavior
genetic differentiation
mark-recapture method
mitochondrial DNA
nesting behavior
population structure
turtle
Argentina
Atlantic Ocean
Atlantic Ocean (South)
spellingShingle Conservation
Dermochelys coriacea
Distribution
Endangered species
Feeding grounds
Migrations
ecoregion
foraging behavior
genetic differentiation
mark-recapture method
mitochondrial DNA
nesting behavior
population structure
turtle
Argentina
Atlantic Ocean
Atlantic Ocean (South)
Prosdocimi, Laura
Remis, Maria Isabel
Origin and genetic diversity of leatherbacks (Dermochelys coriacea) at argentine foraging grounds
topic_facet Conservation
Dermochelys coriacea
Distribution
Endangered species
Feeding grounds
Migrations
ecoregion
foraging behavior
genetic differentiation
mark-recapture method
mitochondrial DNA
nesting behavior
population structure
turtle
Argentina
Atlantic Ocean
Atlantic Ocean (South)
description To conduct conservation of migratory species, such as marine turtles, is important to understand the population structure throughout the entire distribution of the species. We study the genetic composition of the leatherback turtles, Dermochelys coriacea foraging in waters off Argentina by analyzing 763. bp sequences of the mtDNA control region in order to determine the nesting origin of these animals. A total of 40 samples were collected from adult leatherbacks (mean 143.5; 180-123. cm curved carapace length) captured (10%) in fisheries or encountered as strandings (90%). Based on analysis of mtDNA sequences we detected 4 haplotypes, the most common (n = 26) being DC1.1, and the other two rarer DC1.3 (n = 4), DC13.1 (n = 2), and DC1.4 (n = 1). The genetic diversity was evaluated through the haplotype (0, 3712 ± 0, 1000) and nucleotide diversities (0, 000521 ± 0, 000553). Bayesian Mixed Stock Analysis (MSA) showed that the Buenos Aires foraging leatherbacks come primarily from the West African rookeries (Ghana and Gabon, mean estimate = 69% and 14% respectively). MSA results are consistent with those from mark-recapture studies, since four leatherbacks captured in Argentinean waters were adult females that were originally tagged on the nesting beaches in Gabon, West Africa. Our findings demonstrate the connection between nesting and foraging areas in the South Atlantic and illustrate the importance of the Malvinas ecoregion to the survival of migratory marine vertebrates, such as leatherbacks. © 2014 Elsevier B.V.
author Prosdocimi, Laura
Remis, Maria Isabel
author_facet Prosdocimi, Laura
Remis, Maria Isabel
author_sort Prosdocimi, Laura
title Origin and genetic diversity of leatherbacks (Dermochelys coriacea) at argentine foraging grounds
title_short Origin and genetic diversity of leatherbacks (Dermochelys coriacea) at argentine foraging grounds
title_full Origin and genetic diversity of leatherbacks (Dermochelys coriacea) at argentine foraging grounds
title_fullStr Origin and genetic diversity of leatherbacks (Dermochelys coriacea) at argentine foraging grounds
title_full_unstemmed Origin and genetic diversity of leatherbacks (Dermochelys coriacea) at argentine foraging grounds
title_sort origin and genetic diversity of leatherbacks (dermochelys coriacea) at argentine foraging grounds
publishDate 2014
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00220981_v458_n_p13_Prosdocimi
http://hdl.handle.net/20.500.12110/paper_00220981_v458_n_p13_Prosdocimi
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AT remismariaisabel originandgeneticdiversityofleatherbacksdermochelyscoriaceaatargentineforaginggrounds
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