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2. Sex Determination and Sexual Size Dimorphism in the Red-billed Tropicbird (Phaethon aethereus) and White-tailed Tropicbird (P. lepturus).

Author

TAVARES NUNES, GUILHERME, DA ROSA LEAL, GUSTAVO, CAMPOLINA, CYNTHIA, OCHOTORENA DE FREITAS, THALES RENATO, AMORIM EFE, MÁRCIO, and BUGONI, LEANDRO

Subjects
TROPIC-birds, SEXUAL dimorphism, DIMORPHISM in animals, RED-billed tropicbird, WHITE-tailed tropic bird, INTERSEXUALITY in animals, BIRDS
Abstract

The article presents a study which investigated sex determination and sexual size dimorphism in the Red-billed Tropicbird Phaethon aethereus and White-tailed Tropicbird Phaeton lepturus. Red-billed Tropicbirds have male-biased intersexual differences and their best generalized linear models (GLM) are bill length and wing chord. Female White-tailed Tropicbirds have larger wing chord and their best GLMs are wing chord, bill width and bill depth. Their discrimination functions are also described.

Published
2013
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