Dietary resource overlap among three species of frugivorous bat in Costa Rica

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dc.contributor.authorMaynard, Lauren D.en
dc.contributor.authorAnanda, Arianaen
dc.contributor.authorSides, Maria F.en
dc.contributor.authorBurk, Hannahen
dc.contributor.authorWhitehead, Susan R.en
dc.contributor.departmentBiological Sciencesen
dc.date.accessioned2019-06-14T16:44:33Zen
dc.date.available2019-06-14T16:44:33Zen
dc.date.issued2019-03-21en
dc.description.abstractThe maintenance of biodiversity in tropical forests is thought to be dependent on fine-scale mechanisms of niche partitioning that allow species to coexist. This study examined whether three species of short-tailed fruit bat that co-occur at a lowland tropical forest site in Costa Rica (Carollia castanea, C. perspicillata, C. sowelli) avoid inter- and intraspecific competition through dietary specialization on species in the genus Piper. First, dietary composition was examined using faecal samples (N = 210), which yielded three main findings: (1) bat species and sexes vary in overall reliance on fruits of Piper, with a higher percentage of seeds of Piper detected in the diets of C. castanea (98.2%) and females (91.5%); (2) adults and juveniles partition species of Piper by habitat, with a lower percentage of mid- to late-successional species of Piper detected in adults (20.8%); and (3) overall, there is a strong dietary overlap among and within the three species of Carollia. Second, controlled choice experiments were conducted with individual bats (N = 123) to examine preferences for different species of Piper. These results indicated few differences in Piper preference based on bat species, sex, age class or reproductive status, suggesting preference is not the primary mechanism shaping the observed differences in dietary composition. Overall, the dietary composition and preference similarities suggest there is strong competition both among and within the three species of Carollia for food resources.en
dc.description.sponsorshipNSF: DEB 1210884en
dc.description.sponsorshipNSF: DBI 0851933en
dc.description.sponsorshipNational Geographic Waitt Granten
dc.description.sponsorshipDepartment of Ecology and Evolutionary Biology at the University of Coloradoen
dc.description.sponsorshipVirginia Polytechnic Institute and State Universityen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1017/S0266467419000129en
dc.identifier.issue4en
dc.identifier.urihttp://hdl.handle.net/10919/90176en
dc.identifier.volume35en
dc.language.isoen_USen
dc.publisherCambridge University Pressen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectCarolliaen
dc.subjectLa Selva Biological Stationen
dc.subjectNeotropical batsen
dc.subjectniche partitioningen
dc.subjectPiperen
dc.subjectpreferenceen
dc.titleDietary resource overlap among three species of frugivorous bat in Costa Ricaen
dc.title.serialJournal of Tropical Ecologyen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.dcmitypeStillImageen

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