Atlas Des Amphibians De Guyane Pdf To Word

Abstract Many animals provide parental care to offspring. Parental sex-roles vary extensively across taxa, and such patterns are considered well documented. However, information on amphibians is lacking relative to other vertebrate groups. We combine natural history observations with functional and historical analyses to examine the evolution of egg care in glassfrogs (Centrolenidae). Parental care was considered rare and predominately provided by males. Our field observations of 40 species revealed that care occurs throughout the family, and the caregiving sex changes across lineages. We discovered that a brief period of maternal care is widespread and occurs in species previously thought to lack care.

Using a combination of female-removal experiments, prey-choice tests with egg-eating katydids, and parental disturbance-tolerance assays, we confirm the adaptive benefits of short-term maternal care in wild Cochranella granulosa and Teratohyla pulverata. To examine historical transitions between caregiving sexes, we assembled a molecular phylogeny and estimated ancestral care states using our data and the literature. We assessed patterns indicative of sex-specific constraints by testing whether transitions between the sexes are associated with changes in care levels.

VU D'ICI & ARUAG - Atlas des Paysages de la Guyane S. Microsoft Word - lesonzeunites. Optitex 11 Crack Keygen Patches. doc Author: Phil Created Date. Word of the Day; Help. Format de fichier pdf gratuitement sur livres download nom de fichier a perpetuite relegues au bagne de guyane pdf. There is one. Atlas des Amphibiens de Guyane.