Population structure of the endangered green turtles in a feeding ground in Brazilian Northeast: insights for conservation strategies

被引：0
作者：
de Farias, Daniel Solon Dias [1 ,2 ,3 ,4 ]
Zamana, Roberta Ramblas [3 ,5 ]
Ventura, Aline da Costa Bomfim [1 ,2 ,3 ,4 ]
Silva, Flavio Jose de Lima [2 ,3 ]
Gavilan, Simone Almeida [2 ,3 ,4 ]
Santana, Vinicius Gabriel da Silva [1 ,2 ,3 ]
Puertas, Igor Peres [6 ,7 ]
Gattamorta, Marco Aurelio [5 ,8 ]
Matushima, Eliana Reiko [5 ]
do Amaral, Viviane Souza [1 ,9 ]
机构：
[1] Univ Fed Rio Grande do Norte UFRN, Programa Doutorado Desenvolvimento & Meio Ambiente, BR-59075000 Natal, RN, Brazil
[2] Univ Estado Rio Grande do Norte PCCB UERN, Projeto Cetaceos Costa Branca, Campus Cent, BR-59600000 Mossoro, RN, Brazil
[3] Ctr Estudos eMonitoramento Ambiental CEMAM, BR-59655000 Areia Branca, RN, Brazil
[4] Univ Fed Rio Grande do Norte UFRN, Ctr Biociencias, Dept Morfol, Lab Morfofisiol deVertebrados, BR-59075000 Natal, RN, Brazil
[5] Univ Sao Paulo, Fac Med Vet & Zootecnia, Dept Patol, Lab Patol Comparada Anim Selvagens LAPCOM, BR-05508270 Sao Paulo, SP, Brazil
[6] Univ Fed Rio Grande de Norte UFRN, Dept Bot & Zool, Lab Anfibios & Repteis, Centrode Biociencias, BR-59075000 Natal, RN, Brazil
[7] Univ Fed Rio Grande FURG, Inst Oceanog, Lab Estudos Pesca Responsavel, Nucleo Recursos Renovaveis, BR-96203900 Rio Grande, RS, Brazil
[8] Aquario Municipal Santos, Santos, SP, Brazil
[9] Univ Fed Rio Grande do Norte UFRN, Ctr Biociencias, Dept Biol & Genet, Lab Genet Toxicol, BR-59075000 Natal, RN, Brazil
来源：
JOURNAL OF THE MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM | 2025年 / 105卷
关键词：
conservation genetics; ecology; endangered species; sea turtles; CHELONIA-MYDAS; MITOCHONDRIAL-DNA; SEA-TURTLES; DEMOGRAPHIC COMPOSITION; GENETIC COMPOSITION; MIXED STOCKS; DISPERSAL; DIVERSITY; PHYLOGEOGRAPHY; AGGREGATIONS;
D O I：
10.1017/S0025315424001243
中图分类号：
Q17 [水生生物学];
学科分类号：
071004 ;
摘要：
Understanding the population structure and genetic diversity of green turtles is crucial for effective conservation. This study investigated the occurrence, genetic composition, and potential origins of green turtles (Chelonia mydas) in the Potiguar Basin, northeastern Brazil, based on stranding data from 2010 to 2019. Analysis revealed that 87.36% of the population consisted of juveniles, primarily females with a curved carapace length (CCL) between 30 and 59.9 cm. Genetic analysis of the mtDNA control region (481 bp, n = 39) revealed eight haplotypes, with CM-A8 (48.7%) and CM-A5 (30.8%) being the most common. This may be related to the geographic position of the Potiguar Basin, located in the 'corner' of the South American continent. High haplotype diversity and low nucleotide diversity were observed, consistent with other Brazilian foraging grounds. Mixed stock analysis identified Ascension Island as the primary source population, followed by Guinea-Bissau and Surinam. The results highlight the importance of the Potiguar Basin as a foraging area for green turtles and emphasize the need for comprehensive conservation strategies to protect this vulnerable population.
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页数：9
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