Apr 3, 2020

Prey choice of the common vampire bat on introduced species in an Atlantic forest land-bridge island

BioRxiv : the Preprint Server for Biology
Fernando GoncalvesM. Galetti


The proliferation of native, alien, invasive and domestic species provide novel and abundant food resources for the common vampire bat (Desmodus rotundus) that could alter its prey preference. Based on the analysis of carbon and nitrogen stable isotopes, we report the prey choice of D. rotundus on introduced mammals in an tropical land-bridge island where the domestic animals were removed and 100 individuals of 15 mammal species were intentionally introduced. Our analysis shows that, D. rotundus on Anchieta Island were more likely to prey upon species from open habitats , i.e., animals with high C values characterized by the consumption of C4 resources. As expected for a top predator species, N values for D. rotundus were higher and overlapped the niche of the capybaras (Hydrochoerus hydrochaeris) from the Anchieta Island, while it was distant from coatis, and also from those potential prey from the preserved area in the mainland, including the capybaras, indicating that among all potential mammalian prey species, they fed exclusively on capybaras, the highest mammalian biomass on island. Based on previous information on human occupation, the domestic animals present on Anchieta island might be the main prey of D. rotundus and ...Continue Reading

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Mentioned in this Paper

Russula archaea
Histone antigen
Nuclear Proteins
Histone octamer
DNA, Viral
Virus Replication

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