Please use this identifier to cite or link to this item:
https://repositorio.inpa.gov.br/handle/1/19513
Title: | Population biology of the frog Leptodactylus pentadactylus in a central Amazonian rainforest |
Authors: | Galatti, Ulisses |
Keywords: | Demography Frog Rainforest Reproduction Sexual Maturity Amazonas Amazonia Manaus South America Anura Leptodactylus Pentadactylus Leptodactylus Pentadactylus |
Issue Date: | 1992 |
metadata.dc.publisher.journal: | Journal of Herpetology |
metadata.dc.relation.ispartof: | Volume 26, Número 1, Pags. 23-31 |
Abstract: | At Manaus, Amazonas, Brazil, reproduction occurred only in September and October. Population demography was therefore characterized by the presence of discrete annual generations and a sudden increase in population density following the reproductive season. Individuals were nearly two years old at first reproduction. Survival rate was unrelated to age and relatively constant throughout the year. Food availability was highest in the late dry season and in the wet season. Mean volume of stomach contents was used to index rates of food consumption, which generally varied in concert with food availability. Size-independent, individual growth rates also varied throughout the year and were significantly correlated with rainfall, food consumption, and food availability. Seasonality in reproductive behaviour may allow recently metamorphosed juveniles to profit from predictable peaks in food availability. Prey availability, through its effect on food consumption and hence individual growth rates may influence the time that individuals take to reach sexual maturity. -from Author |
metadata.dc.identifier.doi: | 10.2307/1565017 |
Appears in Collections: | Artigos |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.