Multiple Distant Origins for Green Sea Turtles Aggregating off Gorgona Island in the Colombian Eastern Pacific

Mitochondrial DNA analyses have been useful for resolving maternal lineages and migratory behavior to foraging grounds (FG) in sea turtles. However, little is known about source rookeries and haplotype composition of foraging green turtle aggregations in the southeastern Pacific. We used mitochondri...

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Vydané v:	PloS one Ročník 7; číslo 2; s. e31486
Hlavní autori:	Amorocho, Diego F., Abreu-Grobois, F. Alberto, Dutton, Peter H., Reina, Richard D.
Médium:	Journal Article
Jazyk:	English
Vydavateľské údaje:	United States Public Library of Science 02.02.2012 Public Library of Science (PLoS)
Predmet:	Analysis Animal Migration Animals Aquatic reptiles Biology Caretta caretta Chelonia mydas Conservation Conservation areas Coral reefs Deoxyribonucleic acid DNA Ecology Eretmochelys imbricata Forage Foraging behavior Fragments Gene sequencing Genetic aspects Genetics, Population Geography Green turtle Haplotypes Marinas Maternal behavior Mitochondrial DNA National parks Nucleotide sequence Pacific Ocean Protected areas Recruitment Reptiles & amphibians Sea turtles Securities analysis Testudines Turtles - physiology Pacific Ocean Colombia
ISSN:	1932-6203, 1932-6203
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Shrnutí:	Mitochondrial DNA analyses have been useful for resolving maternal lineages and migratory behavior to foraging grounds (FG) in sea turtles. However, little is known about source rookeries and haplotype composition of foraging green turtle aggregations in the southeastern Pacific. We used mitochondrial DNA control region sequences to identify the haplotype composition of 55 green turtles, Chelonia mydas, captured in foraging grounds of Gorgona National Park in the Colombian Pacific. Amplified fragments of the control region (457 bp) revealed the presence of seven haplotypes, with haplotype (h) and nucleotide (π) diversities of h = 0.300±0.080 and π = 0.009±0.005 respectively. The most common haplotype was CMP4 observed in 83% of individuals, followed by CMP22 (5%). The genetic composition of the Gorgona foraging population primarily comprised haplotypes that have been found at eastern Pacific rookeries including Mexico and the Galapagos, as well as haplotypes of unknown stock origin that likely originated from more distant western Pacific rookeries. Mixed stock analysis suggests that the Gorgona FG population is comprised mostly of animals from the Galapagos rookery (80%). Lagrangian drifter data showed that movement of turtles along the eastern Pacific coast and eastward from distant western and central Pacific sites was possible through passive drift. Our results highlight the importance of this protected area for conservation management of green turtles recruited from distant sites along the eastern Pacific Ocean.
Bibliografia:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 content type line 23 Conceived and designed the experiments: RR DA. Performed the experiments: DA. Analyzed the data: RR DA FAA PD. Contributed reagents/materials/analysis tools: RR DA FAA PD. Wrote the paper: RR DA FAA PD.
ISSN:	1932-6203 1932-6203
DOI:	10.1371/journal.pone.0031486