Direct Evidence for Gradual Ontogenetic Dietary Shift in the Green Turtle, Chelonia mydas

Renato Araujo Morais; Robson Guimarães dos Santos; Guilherme Ortigara Longo; Eduardo Tadashi Estevam Yoshida; Gustavo David Stahelin; Paulo Antunes Horta

doi:10.2744/CCB-1058.1

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Renato Araujo Morais,^1,2 Robson Guimarães dos Santos,³ Guilherme Ortigara Longo,^1,2 Eduardo Tadashi Estevam Yoshida,² Gustavo David Stahelin,⁴ Paulo Antunes Horta^1,5

¹1 Programa de Pós-Graduação em Ecologia, Universidade Federal de Santa Catarina, Florianópolis, SC,
²2 Laboratório de Biogeografia e Macroecologia Marinha, Centro de Ciências Biológicas, Universidade F
³3 Departamento de Oceanografia e Ecologia, Universidade Federal do Espírito Santo, Vitória, ES, 2907
⁴4 Fundação Pró-Tamar, Caixa Postal 5098, Trindade, Florianópolis, SC, 88040-970, Brazil [ gusta
⁵5 Departamento de Botânica, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040-900, Br

Abstract

Here we provide information on the diet of juvenile green turtles from neritic developmental habitats in the South Atlantic that indicates the existence of a gradual dietary shift from a primarily carnivorous to a primarily herbivorous diet. Linear regression showed a relation between the size of turtles (n = 22) and the proportion of vegetal matter in the diet, with smaller animals being predominantly carnivorous. We propose 3 hypotheses that could explain these observations.

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Renato Araujo Morais, Robson Guimarães dos Santos, Guilherme Ortigara Longo, Eduardo Tadashi Estevam Yoshida, Gustavo David Stahelin, and Paulo Antunes Horta "Direct Evidence for Gradual Ontogenetic Dietary Shift in the Green Turtle, Chelonia mydas," Chelonian Conservation and Biology 13(2), 260-266, (1 December 2014). https://doi.org/10.2744/CCB-1058.1

Received: 2 May 2013; Accepted: 1 May 2014; Published: 1 December 2014

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