When sounds collide: the effect of anthropogenic noise on a breeding assemblage of frogs in Belize, Central America

Behaviour - Tập 148 Số 2 - Trang 215-232 - 2011
Menemsha Alloush1, Douglas G. Scofield2, Susanne A. Marczak3, Robin M. Jones4, Kristine Kaiser5, Mark V. Oliva6, Peter M. Narins7, Katherine Martineau8
11(Department of Ecology and Evolutionary Biology, University of California Los Angeles, Los Angeles, CA 90095-1606, USA), Current address: Department of Biology, California State University, Long Beach, CA, USA
22(Department of Ecology and Evolutionary Biology, University of California Los Angeles, Los Angeles, CA 90095-1606, USA), Current address: Department of Biology, California State University, Long Beach, CA, USA
33(Department of Ecology and Evolutionary Biology, University of California Los Angeles, Los Angeles, CA 90095-1606, USA), Current address: San Diego Zoo, Wild Animal Park, Institute for Conservation Research, Escondido, CA, USA.
44(Department of Ecology and Evolutionary Biology, University of California Los Angeles, Los Angeles, CA 90095-1606, USA), Current address: The University of Kansas, Division of Ornithology, Lawrence, KS, USA.
55(Department of Ecology and Evolutionary Biology, University of California Los Angeles, Los Angeles, CA 90095-1606, USA), Corresponding author's current address: Department of Biology, University of California Riverside, Riverside, CA, USA;, Email: [email protected]
66(Department of Ecology and Evolutionary Biology, University of California Los Angeles, Los Angeles, CA 90095-1606, USA), Current address: Department of Biology, California State University, Northridge, CA, USA.
77Department of Integrative Biology and Physiology, University of California Los Angeles, Los Angeles, CA, USA.
88(Department of Ecology and Evolutionary Biology, University of California Los Angeles, Los Angeles, CA 90095-1606, USA), Current address: Virginia Commonwealth University, Department of Medicine, Richmond, VA, USA.

Tóm tắt

AbstractMany organisms depend on acoustic communication for myriad functions, and have evolved behaviours to minimize effects of naturally occurring acoustic interference. However, as habitats are subject to increased alteration, anthropogenic noise becomes unavoidable, and how animals overcome such interference is not well understood. In most ecosystems, only a subset of frog species is associated with disturbed habitats; the ability of these species to overcome exogenous noise suggests that habitat associations may be related to species' response to noise. We tested the hypothesis that frogs associated with largely undisturbed forest habitat would be less likely to increase call output in response to exogenous noise than would those associated with disturbed or open habitat. While this relationship was not significant, we found a slight trend supporting the hypothesis. We then asked whether anthropogenic noise affects chorus tenure at individual- or at chorus-levels. Male frogs exposed to anthropogenic noise decreased both the number of days present at the chorus and the nightly chorus duration relative to controls. Because females generally join choruses late at night to breed, the effects of noise shown here are likely to substantially decrease frog reproductive success; thus, the acoustic environment may play an important role in shaping population dynamics and in amphibian declines.

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Behaviour

Tập 148 Số 2

215-232

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