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Autumn Mating and Likely Resorption of an Embryo by a Hoary Bat, Lasiurus Cinereus (Chiroptera: Vespertilionidae)
Sylvie Bouchard, Joanna Zigouris and M. Brock Fenton
The American Midland Naturalist
Vol. 145, No. 1 (Jan., 2001), pp. 210-212
Published by: The University of Notre Dame
Stable URL: http://www.jstor.org/stable/3083097
Page Count: 3
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In December 1999 a female hoary bat (Lasiurus Cinereus) was found in Ontario. The bat, which was kept in captivity from then on, showed signs of distress resembling abortion in late April 2000. Autopsy revealed the presence of two foetuses in the uterus, a male at the latest stage of development and a smaller dead one. The latter stopped development at an earlier stage and was most likely being resorbed, probably due to deficiencies in the female's diet. Mating leading to this pregnancy must have occurred in autumn, likely before the onset of migration.
The American Midland Naturalist © 2001 The University of Notre Dame