Differential trapping success for small mammals using pitfall and standard cage traps in a woodland savannah region of southwestern Brazil

Autor: Rodrigo P. Nápoli, Nilton C. Cáceres, Wellington Hannibal
Rok vydání: 2010
Předmět:
Zdroj: mamm. 75:45-52
ISSN: 1864-1547
0025-1461
DOI: 10.1515/mamm.2010.069
Popis: This study aimed to compare the efficacy of different trapping methodologies for sampling small mammals, consisting of trap type (pitfall, Sherman, and wire traps) and position (ground and understorey) in the Cerrado biome of Brazil. Five fragments of woodland savannah were selected for the study. We captured a total of 364 individuals of 14 species of small mammals. Pitfall traps sampled all 14 species (100%), whereas ground cage traps sampled 8 species (57%), and arboreal traps sampled 5 species (36%). The sampling methodologies gave significantly different results, particularly between pitfall and cage traps, and between ground and arboreal cage traps. However, the comparison between Sherman and wire traps indicated no significant difference, although abundance has been higher for wire cages. Our study confirms the high success rate for pitfall traps now in the Cerrado biome and suggests combinations of trapping methodologies for surveying mammalian diversity.
Databáze: OpenAIRE