Reproductive decisions under threat of predation: squirrel treefrog (Hyla squirella) responses to banded sunfish (Enneacanthus obesus)
Reproductive decisions under threat of predation: squirrel treefrog (Hyla squirella) responses to banded sunfish (Enneacanthus obesus)
We tested whether the presence of a predator (non-lethal effect) could produce patterns of prey distribution and abundance attributed historically to direct mortality. Sixteen experimental ponds (1,000 l cattle watering tanks) were established; eight containing seven enclosed banded sunfish, Enneacanthus obesus, and eight predator-free controls. Ponds were colonized by ovipositing squirrel treefrogs, Hyla squirella, and a total of 33,128 eggs and tadpoles were recovered from the experimental ponds. Significantly more eggs and tadpoles (94.8%) were recorded from the predator-free treatments. These data support an alternative mechanism, based primarily on maternal behavior, explaining classic patterns of anuran species composition across a landscape of breeding sites.
oviposition, non-lethal effects, predation, reproduction, anuran
157-161
Binckley, Christopher A.
182841e2-c9c0-4949-850d-882a6693d153
Resetarits, William J.
73532e80-93e6-49a5-8b1b-1b3f0843aa6b
January 2002
Binckley, Christopher A.
182841e2-c9c0-4949-850d-882a6693d153
Resetarits, William J.
73532e80-93e6-49a5-8b1b-1b3f0843aa6b
Binckley, Christopher A. and Resetarits, William J.
(2002)
Reproductive decisions under threat of predation: squirrel treefrog (Hyla squirella) responses to banded sunfish (Enneacanthus obesus).
Oecologia, 130 (1), .
(doi:10.1007/s004420100781).
Abstract
We tested whether the presence of a predator (non-lethal effect) could produce patterns of prey distribution and abundance attributed historically to direct mortality. Sixteen experimental ponds (1,000 l cattle watering tanks) were established; eight containing seven enclosed banded sunfish, Enneacanthus obesus, and eight predator-free controls. Ponds were colonized by ovipositing squirrel treefrogs, Hyla squirella, and a total of 33,128 eggs and tadpoles were recovered from the experimental ponds. Significantly more eggs and tadpoles (94.8%) were recorded from the predator-free treatments. These data support an alternative mechanism, based primarily on maternal behavior, explaining classic patterns of anuran species composition across a landscape of breeding sites.
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Published date: January 2002
Keywords:
oviposition, non-lethal effects, predation, reproduction, anuran
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Local EPrints ID: 56817
URI: http://eprints.soton.ac.uk/id/eprint/56817
ISSN: 0029-8549
PURE UUID: b7d96dad-0bcd-45a3-a34e-e0c05a5158d2
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Date deposited: 08 Aug 2008
Last modified: 15 Mar 2024 11:03
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Author:
Christopher A. Binckley
Author:
William J. Resetarits
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