Cranial sexual discrimination in hatchling broad-snouted caiman (Caiman latirostris)

Iheringia. Série Zoologia

Carlos Piña²  Alejandro Larriera¹  Pablo Siroski¹  Luciano M. Verdade² 

[1] ,Universidade de São Paulo ESALQ Laboratório de Ecologia AnimalPiracicaba SP ,Brazil

关键词: Caiman latirostris;    crocodilians;    hatchlings;    morphometrics;    sexual dimorphism;    Caiman latirostris;    crocodilianos;    neonatos;    morfometría;    dimorfismo sexual;   

DOI  :  10.1590/S0073-47212007000100003

来源: SciELO

【 摘 要 】

Broad-snouted caiman (Caiman latirostris) hatchlings present a consistent sexual dimorphism in their cranium shape and size. Male hatchlings have smaller crania than females. Using multivariate statistical analyses it is possible to discriminate sex in broad-snouted caiman hatchlings by their cranial shape with a reasonable efficiency. The understanding of sexual dimorphism of crocodilian hatchlings might be possibly improved by experimental approach considering, genetic and phenotypic variables such as incubation temperature and clutch of origin.

【 授权许可】

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