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

被引:20
作者
Morais, Renato Araujo [1 ,2 ]
dos Santos, Robson Guimaraes [3 ]
Longo, Guilherme Ortigara [1 ,2 ]
Estevam Yoshida, Eduardo Tadashi [2 ]
Stahelin, Gustavo David [4 ]
Horta, Paulo Antunes [1 ,5 ]
机构
[1] Univ Fed Santa Catarina, Programa Posgrad Ecol, BR-88010970 Florianopolis, SC, Brazil
[2] Univ Fed Santa Catarina, Ctr Ciencias Biol, Lab Biogeog & Macroecol Marinha, BR-88010970 Florianopolis, SC, Brazil
[3] Univ Fed Espirito Santo, Dept Oceanog & Ecol, BR-29075910 Vitoria, ES, Brazil
[4] Fundacao Protamar, BR-88040970 Florianopolis, SC, Brazil
[5] Univ Fed Santa Catarina, Dept Bot, BR-88040900 Florianopolis, SC, Brazil
关键词
SEA-TURTLE; FEEDING ECOLOGY; NUTRITIONAL ECOLOGY; HABITAT USE; LOGGERHEAD; CALIFORNIA; ESTUARY; MARINE; REGION; ISLAND;
D O I
10.2744/CCB-1058.1
中图分类号
Q95 [动物学];
学科分类号
071002 ;
摘要
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.
引用
收藏
页码:260 / U172
页数:7
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