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Marine Ecology Progress Series

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MEPS 360:285-289 (2008)  -  DOI:

Sea lion Otaria flavescens as host of the common vampire bat Desmodus rotundus

Alessandro Catenazzi1,2,*, Maureen A. Donnelly1

1Department of Biological Sciences, Florida International University, Miami, Florida 33199, USA
2Present address: Department of Integrative Biology, University of California, Berkeley,
3060 Valley Life Sciences Building #3140, Berkeley, California 94720, USA

ABSTRACT: We explored how the common vampire bat Desmodus rotundus is able to survive on hyper-arid rocky islands along the Peruvian coast in the absence of plants and terrestrial mammals. We used carbon and nitrogen stable isotope analyses on D. rotundus hairs and feces to assess the primary source of food, and compared our results with field observations near D. rotundus colonies. Data from stable isotope analyses were consistent with field observations, indicating that D. rotundus feeds on the South American sea lion Otaria flavescens, and occupies the third trophic level in a chain linking anchovies Engraulis ringens, O. flavescens, D. rotundus and a hippoboscid fly, Trichobius parasiticus. Our report demonstrates the importance of marine-derived resources for D. rotundus along the Peruvian coast.

KEY WORDS: Stable isotopes · δ13C · δ15N · Trophic chain · Parasite · Marine subsidy · Pinniped · Peru · Coastal desert

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Cite this article as: Catenazzi A, Donnelly MA (2008) Sea lion Otaria flavescens as host of the common vampire bat Desmodus rotundus. Mar Ecol Prog Ser 360:285-289.

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