Survivorship, Growth, and Detection of a Knob-scaled Lizard in Queretaro, Mexico

Autor: Paul F. Doherty, J. Gastón Zamora-Abrego, J. Jaime Zúñiga-Vega, Claudia Molina-Zuluaga
Rok vydání: 2013
Předmět:
Zdroj: Journal of Herpetology. 47:156-161
ISSN: 0022-1511
DOI: 10.1670/11-251
Popis: A deep understanding of the processes affecting the population dynamics of living organisms requires fine-scale analyses of basic demographic parameters such as stage-specific survival and growth rates. In this study we estimated survival, detection, and transition rates (growth) for different stages of the life cycle of a Knob-scaled Lizard of the genus Xenosaurus. We also examined potential sources of variation for these parameters by means of a multiple-model inference framework. Our capture–mark–recapture data revealed that survival rates were homogeneous among stage classes but markedly different between the rainy and dry seasons. Contrary to our expectation, survival probability was higher during dry months. Detection probability varied considerably among stage classes and through time. Consistent with theoretical predictions, the rate at which lizards moved from a particular stage class to the following (transition rates) varied among stage classes, with the fastest rates observed in yearl...
Databáze: OpenAIRE