Long-term changes in body size of green turtles nesting on Trindade Island, Brazil: Signs of recovery?

Pereira, Josiele Alves; Martins, Agnaldo Silva; Seminoff, Jeffrey A; de Azevedo Mazzuco, Ana Carolina

Pereira, Josiele Alves; Martins, Agnaldo Silva; Seminoff, Jeffrey A; de Azevedo Mazzuco, Ana Carolina.

Afiliação

Pereira JA; Programa de Pós-Graduação em Biodiversidade Animal, Universidade Federal de Goiás, Goiânia, GO, Brazil. Electronic address: josielepereira@discente.ufg.br.
Martins AS; Departamento de Oceanografia e Ecologia, Universidade Federal do Espírito Santo, Espírito Santo, Brazil. Electronic address: agnaldo.martins@ufes.br.
Seminoff JA; NOAA-Southwest Fisheries Science Center, La Jolla, CA, 92037, USA. Electronic address: jeffrey.seminoff@noaa.gov.
de Azevedo Mazzuco AC; Grupo de Ecologia Bêntica, Departamento de Oceanografia e Ecologia, Universidade Federal do Espírito Santo, Espírito Santo, Brazil. Electronic address: ac.mazzuco@me.com.

Mar Environ Res ; 186: 105930, 2023 Apr.

Article em En | MEDLINE | ID: mdl-36863078

RESUMO

Trindade Island is an important wildlife refuge in the South Atlantic Ocean and hosts the largest nesting population of green turtles (Chelonia mydas) in Brazil, about which temporal ecological dynamics are still not well understood. The present study examines 23 years of nesting for green turtles at this remote island to evaluate annual mean nesting size (MNS) changes and post-maturity somatic growth rates. Our results show a significant decrease in annual MNS over the study; Whereas MNS during the first three consecutively monitored years (1993-1995) was 115.1 ± 5.4 cm, during the last three years (2014-2016) it was 111.2 ± 6.3 cm. There was no significant change in post-maturity somatic growth rate over the course of the study; the mean annual growth rate was 0.25 ± 0.62 cm/year. These findings suggest an increase in the relative proportion of smaller, presumptive neophyte nesters appearing in Trindade during the study period.

Assuntos

Tartarugas; Animais; Brasil; Animais Selvagens; Tamanho Corporal; Oceano Atlântico; Comportamento de Nidação

Palavras-chave

Body size; Conservation; Mean nesting size; Monitoring; Population ecology; Southwestern Atlantic Ocean; Time-series

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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Tartarugas Tipo de estudo: Diagnostic_studies Limite: Animals País/Região como assunto: America do sul / Brasil Idioma: En Revista: Mar Environ Res Assunto da revista: BIOLOGIA / SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2023 Tipo de documento: Article País de publicação: Reino Unido

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