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20 July 2018 Post-Breeding Migration and Habitat of Unisexual Salamanders in Maine, USA
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Abstract

The behavioral phenotypes of hybrids vary in degree of similarity to their parent species. Unisexual salamanders (Ambystoma laterale sp.), the result of ancient hybridization, contain nuclear DNA of multiple sperm-host species whose habitat preferences differ from one another. We radio tracked unisexual salamanders from four vernal pools to quantify migration distances and post-breeding habitat selection and compared these to published accounts for Blue-Spotted Salamanders (A. laterale) and Jefferson Salamanders (Ambystoma jeffersonianum). Unisexual salamanders used sites with higher numbers of small mammal burrows, lower substrate temperatures, and lower cover by forest floor vegetation than available sites, similar to the sperm-hosts. Unisexual salamanders also migrated distances within the range reported for these sperm-hosts. Even so, individual migration distances were context specific. We implore managers to use caution when designating management zones around breeding pools by considering that some populations may move farther than those reported in published accounts.

Copyright 2018 Society for the Study of Amphibians and Reptiles
Kristine Hoffmann, Malcolm Hunter, Aram J. K. Calhoun, and James Bogart "Post-Breeding Migration and Habitat of Unisexual Salamanders in Maine, USA," Journal of Herpetology 52(3), 273-281, (20 July 2018). https://doi.org/10.1670/17-099
Accepted: 1 May 2018; Published: 20 July 2018
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