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Dietary overlap and seasonality in three species of mormoopid bats from a tropical dry forest.
Salinas-Ramos, Valeria B; Herrera Montalvo, L Gerardo; León-Regagnon, Virginia; Arrizabalaga-Escudero, Aitor; Clare, Elizabeth L.
Afiliação
  • Salinas-Ramos VB; Posgrado en Ciencias Biológicas, Instituto de Biología, Universidad Nacional Autónoma de México, México, D. f. 04510, México.
  • Herrera Montalvo LG; Estación de Biología Chamela, Instituto de Biología, Universidad Nacional Autónoma de México, A.P. 21, San Patricio, Jalisco, 48980, México.
  • León-Regagnon V; Estación de Biología Chamela, Instituto de Biología, Universidad Nacional Autónoma de México, A.P. 21, San Patricio, Jalisco, 48980, México.
  • Arrizabalaga-Escudero A; Faculty of Science and Technology, University of the Basque Country UPV/EHU, Sarriena z/g, Leioa, E-48940, Spain.
  • Clare EL; School of Biological and Chemical Sciences, Queen Mary University of London, Mile end Road, London, E1 4NS, UK.
Mol Ecol ; 24(20): 5296-307, 2015 Oct.
Article em En | MEDLINE | ID: mdl-26369564
Competing hypotheses explaining species' use of resources have been advanced. Resource limitations in habitat and/or food are factors that affect assemblages of species. These limitations could drive the evolution of morphological and/or behavioural specialization, permitting the coexistence of closely related species through resource partitioning and niche differentiation. Alternatively, when resources are unlimited, fluctuations in resources availability will cause concomitant shifts in resource use regardless of species identity. Here, we used next-generation sequencing to test these hypotheses and characterize the diversity, overlap and seasonal variation in the diet of three species of insectivorous bats of the genus Pteronotus. We identified 465 prey (MOTUs) in the guano of 192 individuals. Lepidoptera and Diptera represented the most consumed insect orders. Diet of bats exhibited a moderate level of overlap, with the highest value between Pteronotus parnellii and Pteronotus personatus in the wet season. We found higher dietary overlap between species during the same seasons than within any single species across seasons. This suggests that diets of the three species are driven more by prey availability than by any particular predator-specific characteristic. P. davyi and P. personatus increased their dietary breadth during the dry season, whereas P. parnellii diet was broader and had the highest effective number of prey species in all seasons. This supports the existence of dietary flexibility in generalist bats and dietary niche overlapping among groups of closely related species in highly seasonal ecosystems. Moreover, the abundance and availability of insect prey may drive the diet of insectivores.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Estações do Ano / Quirópteros / Dieta Tipo de estudo: Prognostic_studies Limite: Animals País/Região como assunto: Mexico Idioma: En Revista: Mol Ecol Assunto da revista: BIOLOGIA MOLECULAR / SAUDE AMBIENTAL Ano de publicação: 2015 Tipo de documento: Article País de publicação: Reino Unido
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Estações do Ano / Quirópteros / Dieta Tipo de estudo: Prognostic_studies Limite: Animals País/Região como assunto: Mexico Idioma: En Revista: Mol Ecol Assunto da revista: BIOLOGIA MOLECULAR / SAUDE AMBIENTAL Ano de publicação: 2015 Tipo de documento: Article País de publicação: Reino Unido