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1 May 2000 Eggs of Hemidactylium scutatum (Caudata: Plethodontidae) Are Unpalatable to Insect Predators
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Abstract

Palatability of Hemidactylium scutatum eggs was examined in a factorial experiment. Eggs of Hemidactylium and Desmognathus ocoee, which are known to be palatable, were offered to carabid beetle species collected from pond and stream habitats. Beetles collected from a pond habitat did not eat salamander eggs of either species, suggesting that they do not include salamander eggs in their diet regardless of palatablility. Beetles collected from a stream habitat punctured the same number of eggs of both species but consumed a much greater number of D. ocoee eggs. These results suggest that eggs of Hemidactylium contain a toxic or noxious chemical repellant in the jelly layer and may help to explain lack of nest defense and desertion in Hemidactylium and other caudate species.

The American Society of Ichthyologists and Herpetologists
Zachary J. Hess and Reid N. Harris "Eggs of Hemidactylium scutatum (Caudata: Plethodontidae) Are Unpalatable to Insect Predators," Copeia 2000(2), 597-600, (1 May 2000). https://doi.org/10.1643/0045-8511(2000)000[0597:EOHSCP]2.0.CO;2
Accepted: 30 July 1999; Published: 1 May 2000
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