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1 December 2011 Activity of Two Species of Free-Tailed Bats Over a Stream in Southeastern Brazil
Luciana de Moraes Costa, Elizabete Captivo Lourenço, Júlia Lins Luz, Ana Paula Félix de Carvalho, Carlos Eduardo Lustosa Esbérard
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Abstract

The objective of the present study was to investigate activity time of the molossid bats Nyctinomops laticaudatus and Molossus molossus at the same locality, and to test whether activity of one species affects activity of the other. During January 2007-May 2009, we sampled for 15 nights over a stream in southeastern Brazil. Total sampling effort was 166 h and 693 m of nets. Time of capture was transformed into minutes in relation to sunset. First captures of M. molossus occurred just after sunset except for one individual that was captured before sunset. Total activity time of M. molossus ranged from 27 min before sunset to 743 min after sunset. Total activity time of N. laticaudatus ranged from 42 to 675 min after sunset and activity differed significantly between species. Activity of M. molossus was related to time of sunset, as expected based on behavior of other insectivorous species, whereas activity of N. laticaudatus seemed independent of sunset.

© Museum and Institute of Zoology PAS
Luciana de Moraes Costa, Elizabete Captivo Lourenço, Júlia Lins Luz, Ana Paula Félix de Carvalho, and Carlos Eduardo Lustosa Esbérard "Activity of Two Species of Free-Tailed Bats Over a Stream in Southeastern Brazil," Acta Chiropterologica 13(2), 405-409, (1 December 2011). https://doi.org/10.3161/150811011X624884
Received: 14 December 2010; Accepted: 1 September 2011; Published: 1 December 2011
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