Titre du document / Document title
Evidence for exploitative competition : Comparative foraging behavior and roosting ecology of short-tailed fruit bats (phyllostomidae)
Auteur(s) / Author(s)
BONACCORSO Frank J. (1) ;
WINKELMANN John R. (2) ;
SHIN Danny (1) ;
AGRAWAL Caroline I. (1) ;
ASLAMI Nadia (1) ;
BONNEY Caitlin (1) ;
HSU Andrea (1) ;
JEKIELEK Phoebe E. (1) ;
KNOX Allison K. (1) ;
KOPACH Stephen J. (1) ;
JENNINGS Tara D. (1) ;
LASKY Jesse R. (1) ;
MENESALE Sarah A. (1) ;
RICHARDS Jeannine H. (1) ;
RUTLAND Jessica A. (1) ;
SESSA Anna K. (1) ;
ZHAUROVA Luba (1) ;
KUNZ Thomas H. (1) ;
Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)
(1) Center for Ecology and Conservation Biology, Boston University, 5 Cummington Street, Boston, Massachusetts 02215, ETATS-UNIS
(2) Department of Biology, Gettysburg College, Gettysburg, Pennsylvania 17325, ETATS-UNIS
Résumé / Abstract
Chestnut short-tailed bats, Carollia castanea, and Seba's short-tailed bats, C. perspicillata (Phyllostomidae), were radio-tracked (N= 1593 positions) in lowland rain forest at Tiputini Biodiversity Station, Orellana Province, Ecuador. For 11 C. castanea, mean home range was 6.8 ± 2.2 ha, mean core-use area was 1.7 ±0.8 ha, and mean long axis across home range was 438 ± 106 m. For three C. perspicillata, mean home range was 5.5 ± 1.7 ha, mean core-use area was 1.3 ± 0.6 ha, and mean long axis was 493 ± 172 m. Groups of less than five C castanea occupied day-roosts in earthen cavities that undercut banks the Tiputini River. Carollia perspicillata used tree hollows and buildings as day-roosts. Interspecific and intraspecific overlap among short-tailed bats occurred in core-use areas associated with clumps of fruiting Piper hispidum (peppers) and Cecropia sciadophylla. Piper hispidum seeds were present in 80 percent of the fecal samples from C. castanea and 56 percent of samples from C. perspicillata. Carollia perspicillata handled pepper fruits significantly faster than C. castanea; however, C. castanea commenced foraging before C. perspicillata emerged from day-roosts. Evidence for exploitative competition between C. castanea and C. perspicillata is suggested by our observations that 95 percent of ripe P. hispidum fruits available at sunset disappear before sunrise (N= 74 marked fruits). Piper hispidum plants produced zero to 12 ripe infructescences per plant each night during peak production. Few ripe infructescences of P. hispidum were available during the dry season; however, ripe infructescences of C. sciadophylla, remained abundant.
Revue / Journal Title
Biotropica
ISSN
0006-3606
CODEN BTROAZ
Source / Source
2007, vol. 39, n
o2, pp. 249-256 [8 page(s) (article)] (1/2 p.)
Langue / Language
Anglais
Editeur / Publisher
Wiley, Hoboken, NJ, ETATS-UNIS
(1969)
(Revue)
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Localisation / Location
INIST-CNRS, Cote INIST : 15251, 35400014354006.0140
Nº notice refdoc (ud4) : 18677590
