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2011 | 13 | 2 |
Tytuł artykułu

Emergence time and foraging activity in Pallas' mastiff bat, Molossus molossus (Chiroptera: Molossidae) in relation to sunset/sunrise and phase of the moon

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The decision on when to emerge from the safety of a roost and forage for prey is thought to be a result of the trade off between peak insect abundance and predation pressure for bats. In this study we show that the velvety free-tailed bat Molossus molossus emerges just after sunset and just before sunrise for very short foraging bouts (average 82.2 min foraging per night). Contrary to previous studies, bats remain inactive in their roost between activity patterns. Activity was measured over two complete lunar cycles and there was no indication that phase of the moon had an influence on emergence time or the numbers of bats that emerged from the roost. This data suggests that M. molossus represents an example of an aerial hawking bat whose foraging behaviour is in fact adapted to the compromise between the need to exploit highest prey availability and the need to avoid predation.
Słowa kluczowe
Wydawca
-
Rocznik
Tom
13
Numer
2
Opis fizyczny
p.399-404,fig.,ref.
Twórcy
autor
  • Ecology and Evolutionary Biology Department, Princeton University, Princeton, New Jersey 08544, USA
  • IICB, University of Leeds, Leeds, LS2 9JT, United Kingdom
  • School of Biological Sciences, Queen's University Belfast, Medical Biology Centre, 97 Lisburn Road, Belfast BT9 7BL, United Kingdom
  • Centro de Biologia Ambiental Faculdade de Ciencias, Universidade de Lisboa, 1749-016 Lisboa, Portugal
  • Smithsonian Tropical Research Institute, Balboa, Republic of Panama
  • Institute of Experimental Ecology, University of Ulm, Albert-Einstein Allee 11, D-89069 Ulm, Germany
autor
  • Smithsonian Tropical Research Institute, Balboa, Republic of Panama
  • New York State Museum, CEC 3140, Albany, NY 12230, USA
autor
  • Max Planck Institute for Ornithology, Department for Migration and Immuno-ecology, Schlossallee 2, Radolfzell D-78315 Germany
Bibliografia
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Typ dokumentu
Bibliografia
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Identyfikator YADDA
bwmeta1.element.agro-00dd41d2-db7b-420e-b744-ad464b5c7a06
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