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- W2004719396 abstract "The effects of arousal from hibernation and presence of plasma androgen on the expression of mating behavior in male big brown bats (Eptesicus fuscus) were tested in a captive population exposed to seminatural conditions in central Alabama. In the mild winter of 1994-1995, flight cage temperatures never fell below 10 degrees C. Bats were never observed to enter sustained (over 2 d) torpor. They were also never observed to mate. Unmanipulated, sham-operated, and gonadectomized males and unmanipulated females were exposed to 6 d of 4 degrees C. All individuals appeared torpid, and body temperatures of monitored bats fell at least 15 degrees-20 degrees C. Plasma androgen levels of torpid unmanipulated, sham-operated, and gonadectomized males averaged 25.4 +/- 9.2, 19.7 +/- 9.1, and 1.5 +/- 0.25 ng/mL, respectively, and did not differ significantly from levels for the same groups 1 mo previous to induced torpor. When animals were returned to 23 degrees C, 57% of unmanipulated, 40% of the sham-operated, and 33% of gonadectomized males displayed mating behavior upon arousal. Almost all matings occurred within 48 h of arousal, the majority in the first 3 h. Males not exposed to low temperatures were not observed to mate. Although individuals from all three treatments mated, gonadectomized males averaged fewer mounts and copulations per individual. Androgen levels declined significantly from torpor levels in all groups 48 h after arousal. Thus, an extended period of low body temperature and arousal appeared to be a short-term activator of sexual behavior in the big brown bat; unmanipulated males were more strongly affected by this stimulus than gonadectomized males." @default.
- W2004719396 created "2016-06-24" @default.
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- W2004719396 date "1997-09-01" @default.
- W2004719396 modified "2023-10-16" @default.
- W2004719396 title "Effects of Arousal from Hibernation and Plasma Androgen Levels on Mating Behavior in the Male Big Brown Bat,<i>Eptesicus fuscus</i>" @default.
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- W2004719396 doi "https://doi.org/10.1086/515857" @default.
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