Adult survival and population growth rate in Colorado big brown bats (Eptesicus fuscus)
نویسندگان
چکیده
منابع مشابه
Social calls of flying big brown bats (Eptesicus fuscus)
Vocalizations serving a variety of social functions have been reported in many bat species (Order Chiroptera). While echolocation by big brown bats (Eptesicus fuscus) has been the subject of extensive study, calls used by this species for communication have received comparatively little research attention. Here, we report on a rich repertoire of vocalizations produced by big brown bats in a lar...
متن کاملProgesterone transfer among cohabitating female big brown bats (Eptesicus fuscus).
Experiments using female mice and bats have demonstrated that tritium-labeled 17β-estradiol (3H-E2) can be absorbed via cutaneous and intranasal routes and distributed to reproductive and neural tissues. Radioactivity has also been measured in tissues of untreated females after 48h cohabitation with 3H-E2 injected males. The present study was designed to quantify steroid transfer among female b...
متن کاملEcholocation behavior of big brown bats, Eptesicus fuscus, in the field and the laboratory.
Echolocation signals were recorded from big brown bats, Eptesicus fuscus, flying in the field and the laboratory. In open field areas the interpulse intervals (IPI) of search signals were either around 134 ms or twice that value, 270 ms. At long IPI's the signals were of long duration (14 to 18-20 ms), narrow bandwidth, and low frequency, sweeping down to a minimum frequency (Fmin) of 22-25 kHz...
متن کاملFactors influencing movement probabilities of big brown bats (Eptesicus fuscus) in buildings.
We investigated movements of female big brown bats (Eptesicus fuscus) roosting in maternity colonies in buildings in Fort Collins, Colorado (USA), during the summers of 2002, 2003, and 2005. This behavior can be of public health concern where bats that may carry diseases (e.g., rabies) move among buildings occupied by people. We used passive integrated transponders (PIT tags) to mark individual...
متن کاملBroadband noise exposure does not affect hearing sensitivity in big brown bats (Eptesicus fuscus).
In many vertebrates, exposure to intense sounds under certain stimulus conditions can induce temporary threshold shifts that reduce hearing sensitivity. Susceptibility to these hearing losses may reflect the relatively quiet environments in which most of these species have evolved. Echolocating big brown bats (Eptesicus fuscus) live in extremely intense acoustic environments in which they navig...
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ژورنال
عنوان ژورنال: Journal of Mammalogy
سال: 2011
ISSN: 0022-2372,1545-1542
DOI: 10.1644/10-mamm-a-162.1