Using pitfall traps arrays for estimate home range for the lizard Tropidurus oreadicus Rodrigues, 1987 in Central Brazil

Reuber Albuquerque Brandão, Renata Dias Françoso, Guilherme Ramalho Chagas Cataldi Santoro, Ayrton Klier Péres Jr

Abstract


Home range can reveal information on both social systems and behaviour of populations. We propose a minimal convex polygon (MCP) measurement protocol based on pitfall arrays, utilizing the lizard Tropidurus oreadicus as model. The survey was realized in a 10 month period, in central-north portion of the Cerrado. We performed a multiple regression and Akaike criteria model selection to explain home range of 20 individuals. Our results showed that the number of captures and interval between the first and the last capture were the most important variable to explain home range of Tropidurus oreadicus. Most studies relate home range size with individual and species size, except for herbivores and sedentary foragers. The determination of T. oreadicus home range is not affected by individual size or sex, but by the sampling intensity. The sampling period and the size of our traps arrays were not sufficient to cover individuals home ranges. Improvements can be implemented to enhance the effectiveness of the protocol presented here and it can be useful to determine home range for several species, especially arboreal lizards. Besides, this method could be an alternative to high cost methods that are not affordable in non-developed countries.

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