Observations on post-breeding movements of radio-implanted green frogs (Rana clamitans) revealed that frogs made repetitive forays away from and back to breeding ponds before final migrations to overwintering sites away from the pond. We used a drift fence and radio-transmitters to test the hypothesis that these movements were related to preoverwintering foraging and not overwintering site selection. Movements were oriented directly to habitats away from the pond, the terrestrial habitats had more food than those closer to the pond edge, and frog mass increased during forays away from the pond but declined at the pond. Foray directions were not correlated with migration direction and were considerably shorter than migration distances to overwintering sites. An intense, late season, foraging period is probably necessary for the green frog to rebuild lipid reserves following breeding and to prepare for overwintering.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.