Do current vampire bat (Desmodus rotundus) population control practices pose a threat to dekeyser's nectar bat's (Lonchophylla dekeyseri) long-term persistence in the Cerrado?

• Autorzy: Aguiar L.M.S. , Brito D. , Machado R. B.
• Języki publikacji: EN

Abstrakty

EN

The Cerrado is rapidly losing space to agriculture, pastures and urbanization. Current management practices to control rabies outbreaks through the eradication of vampire bat populations may put other bat species in peril. Our objective is to evaluate if the current vampire bat population control practices could pose a threat to Lonchophylla dekeyseri's persistence, an endemic bat of the Cerrado. We used the VORTEX program to model different vampire bat management scenarios, causing low (25%), medium (50%) or high (75%) incidental mortality to L. dekeyseri populations. Inbreeding depression has been identified as a threat to the species, therefore we also modeled scenarios evaluating such effects. Results show that current vampire bat management practices have serious impacts on populations of L. dekeyseri. In all cases marked declines in population sizes were observed (even when there was no decline in survival probabilities). For medium and high incidental mortality management scenarios, we also observed decreases in survival probability and in genetic diversity. In those scenarios evaluating vampire bat management and inbreeding depression together, the models suggest that such interaction results in more pronounced declines. Habitat loss and fragmentation in the Cerrado are severe threats and have already negatively impacted L. dekeyseri. Unfortunately, if currentpopulation control practices dealing with vampire bats are not changed, inappropriate rabies management may be the coup de grace to the long-term persistence of this species.

• Wydawca: -
• Czasopismo: Acta Chiropterologica
• Rocznik: 2010
• Tom: 12
• Numer: 2
• Opis fizyczny: p.275-282,ref.

Twórcy

autor

Aguiar L.M.S.

• Universidade de Brasilia, Instituto de Biologia, Departamento de Zoologia, Campus Universitário Darcy Ribeiro, Brasilia, Distrito Federal 70910-900, Brazil

autor

Brito D.

• Universidade Federal de Goiás, Instituto de Ciências Biológicas, Departamento de Ecologia, Caixa Postal 131, Goiânia, Goiás 74001-970, Brazil
• Universidade Estadual de Santa Cruz, Programa de Pós-Graduação em Ecologia e Conservação da Biodiversidade, Rodovia Ilhéus-Itabuna km 16, Ilhéus, Bahia 45662-000, Brazil

autor

Machado R. B.

• Universidade de Brasilia, Instituto de Biologia, Departamento de Zoologia, Campus Universitário Darcy Ribeiro, Brasilia, Distrito Federal 70910-900, Brazil

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