Journal Article
Coprophagy in a caveadapted salamander; the importance of bat guano examined through nutritional and stable isotope analyses
Fenolio, D.B., Graening, G.O., Collier, B.A. et al.
Record Number:
6457
Year:
2006
Journal:
Proceedings of the Royal Society Biologial Sciences
Pages:
439-443
Volume:
273
Abstract:
During a two year population ecology study in a cave environment, 15 Eurycea (=Typhlotriton) spelaea were observed ingesting bat guano. Furthermore, E. spelaea capture numbers increased significantly during the time that grey bats (Myotis grisescens) deposited fresh guano. We investigated the hypothesis that this behaviour was not incidental to the capture of invertebrate prey, but a diet switch to an energy-rich detritus in an oligotrophic environment. Stable isotope assays determined that guano may be assimilated into salamander muscle tissue, and nutritional analyses revealed that guano is a comparable food source to potential invertebrate prey items. This is the first report of coprophagy in a salamander and in any amphibian for reasons other than intestinal inoculation. Because many temperate subterranean environments are often energy poor and this limitation is thought to select for increased diet breadth, we predict that coprophagy may be common in subterranean vertebrates where it is not currently recognized.
Times Cited:
1
Relevent Species:
Related Records:
Potter, F.E. Jr. and Sweet, S.S. (1981)
Generic boundaries in Texas cave salamanders, and a redescription of Typhlomolge
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Hillis, D.M., Chamberlain, D.E., Wilcox, T.P. and Chippindale, P.T. (2001)A new species of subterranean blind salamander (Plethodontidae: Hemidactyliini:
Eurycea: Typhlomolge) from Austin, Texas, and a systematic revision of central Texas
paedomorphic salamanders
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