Do bigger bats need more time to forage?
Braz J Biol
; 68(4): 819-22, 2008 Nov.
Article
em En
| MEDLINE
| ID: mdl-19197500
ABSTRACT
We test the hypothesis is that bats using the same area and at the same time would be using similar preys, but they would have different foraging times due to specific differences in biomass. A total of 730 captures was analyzed 13 species of Vespertilionidae and Molossidae bats netted over a small dam in southeastern Brazil from 1993 and 1999. The relationship between the average time of captures and the biomass of the species of Vespertilinidae and Molossidae most frequent (captures > 4) was positive and significant (r = 0.83, p = 0.022, N = 7). Two lines are discussed to answer the longer foraging time for bigger bats 1) larger insectivorous bats don't consume proportionally larger preys and 2) larger insects are less available.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Comportamento Predatório
/
Quirópteros
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Comportamento Alimentar
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Insetos
Idioma:
En
Ano de publicação:
2008
Tipo de documento:
Article