Nocturnal shift in the antipredator response to predator-diet cues in laboratory and field trials. Sullivan, A. M, Madison, D. M, Maerz, J. C, & Rohr, J R In Chemical Signals in Vertebrates X, pages 349–356. Springer, New York, 2005. abstract bibtex The effects of predator diet on prey anti-predator responses to chemical cues may be crucial to understanding predator-prey interactions. In this study we examined how predator diet influenced red-backed salamander (Plethodon cinereus) responses to chemical traces from garter snakes (Thamnophis sirtalis) fed red-backed salamanders and northern two-lined salamanders (Eurycea bislineata) at two different periods of their active cycle. During early evening (around sunset), P. cinereus avoided all predator chemical traces regardless of snake diet, with neither treatment being avoided more than the other in treatment comparisons. Late at night, only the chemical traces from snakes fed P. cinereus elicited avoidance, even when treatments were tested against one another. The relative avoidance of treatments late at night suggests that the chemical cues eliciting avoidance is not generalized among plethodontid salamanders, and that chemical traces of related organisms in the predator's diet may contribute to the assessment of predation risk. The diet-dependent shift in anti-predator behavior within the nocturnal cycle also suggests temporal variation in the chemical cues used for risk assessment.
@incollection{sullivan_nocturnal_2005,
address = {New York},
title = {Nocturnal shift in the antipredator response to predator-diet cues in laboratory and field trials},
copyright = {All rights reserved},
abstract = {The effects of predator diet on prey anti-predator responses to chemical cues may be crucial to understanding predator-prey interactions. In this study we examined how predator diet influenced red-backed salamander (Plethodon cinereus) responses to chemical traces from garter snakes (Thamnophis sirtalis) fed red-backed salamanders and northern two-lined salamanders (Eurycea bislineata) at two different periods of their active cycle. During early evening (around sunset), P. cinereus avoided all predator chemical traces regardless of snake diet, with neither treatment being avoided more than the other in treatment comparisons. Late at night, only the chemical traces from snakes fed P. cinereus elicited avoidance, even when treatments were tested against one another. The relative avoidance of treatments late at night suggests that the chemical cues eliciting avoidance is not generalized among plethodontid salamanders, and that chemical traces of related organisms in the predator's diet may contribute to the assessment of predation risk. The diet-dependent shift in anti-predator behavior within the nocturnal cycle also suggests temporal variation in the chemical cues used for risk assessment.},
booktitle = {Chemical {Signals} in {Vertebrates} {X}},
publisher = {Springer},
author = {Sullivan, Aaron M and Madison, Dale M and Maerz, John C and Rohr, J R},
year = {2005},
keywords = {amphibian, behavioral biorhythms, chemical alarm cues, predation},
pages = {349--356},
}
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