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

被引：2

作者：

Pereira, Josiele Alves ^{[1
]}

Martins, Agnaldo Silva ^{[2
]}

Seminoff, Jeffrey A. ^{[3
]}

Mazzuco, Ana Carolina de Azevedo ^{[4
]}

机构：

[1] Univ Fed Goias, Programa Pos Grad Biodiversidade Anim, Goiania, GO, Brazil

[2] Univ Fed Espirito Santo, Dept Oceanog & Ecol, Vitoria, ES, Brazil

[3] NOAA Southwest Fisheries Sci Ctr, La Jolla, CA 92037 USA

[4] Univ Fed Espirito Santo, Dept Oceanog & Ecol, Grp Ecol Bent, Vitoria, ES, Brazil

来源：

MARINE ENVIRONMENTAL RESEARCH | 2023年 / 186卷

关键词：

Conservation; Mean nesting size; Population ecology; Body size; Southwestern Atlantic Ocean; Time; -series; Monitoring; CHELONIA-MYDAS; SOMATIC GROWTH; SEA-TURTLES; TEMPORAL VARIABILITY; PREDATION; RATES;

D O I：

10.1016/j.marenvres.2023.105930

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Trindade Island is an important wildlife refuge in the South Atlantic Ocean and hosts the largest nesting pop-ulation 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, pre-sumptive neophyte nesters appearing in Trindade during the study period.

引用

页数：8

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