NDLI: Ecological niche and phylogeny: the highly complex echolocation behavior of the trawling long-legged bat, Macrophyllum macrophyllum

Content Provider	Springer Nature Link
Author	Weinbeer, Moritz Kalko, Elisabeth K. V.
Copyright Year	2007
Abstract	Bats produce echolocation signals that reflect the sensory tasks they perform. In open air or over water, bats encounter few or no background echoes (clutter). Echolocation of such bats is the primary cue for prey perception and varies with the stage of approach to prey, typically comprising search, approach, and terminal group calls. In contrast, bats that glean stationary food from rough surfaces emit more uniform calls without a distinct terminal group. They use echolocation primarily for orientation in space and mostly need additional sensory cues for finding food because clutter echoes overlap strongly with food echoes. Macrophyllum macrophyllum is the only Neotropical leaf-nosed bat (Phyllostomidae) that hunts in clutter-poor habitat over water. As such, we hypothesized that, unlike all other members of its family, but similar to other trawling and aerial insectivorous bats, M. macrophyllum can hunt successfully by using only echolocation for prey perception. In controlled behavioral experiments on Barro Colorado Island, Panamá, we confirmed that echolocation alone is sufficient for finding prey in M. macrophyllum. Furthermore, we showed that pattern and structure of echolocation signals in M. macrophyllum are more similar to aerial and other trawling insectivorous bats than to close phylogenetic relatives. Particularly unique among phyllostomid bats, we found distinct search, approach, and terminal group calls in foraging M. macrophyllum. Call structure, however, consisting of short, multiharmonic, and steep frequency-modulated signals, closely resembled those of other phyllostomid bats. Thus, echolocation behavior in M. macrophyllum is shaped by ecological niche as well as by phylogeny.
Starting Page	1337
Ending Page	1348
Page Count	12
File Format	PDF
ISSN	03405443
Journal	Behavioral Ecology and Sociobiology
Volume Number	61
Issue Number	9
e-ISSN	14320762
Language	English
Publisher	Springer-Verlag
Publisher Date	2007-02-23
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Barro Colorado Island Foraging behavior Phyllostomidae Sensory ecology Trawling Zoology Behavioural Sciences
Content Type	Text
Resource Type	Article
Subject	Animal Science and Zoology Ecology, Evolution, Behavior and Systematics

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