Seasonal changes in the frequencies of green and brown Pacific Treefrogs (Pseudacris regilla) were recorded at a site in southern California. Changes in the proportions of green and brown individuals in the population appear to track seasonal changes in the availability of green and brown background substrates. We show that the change in the frequencies of green and brown frogs is not just caused by a change in the proportion of frogs with fixed green and brown body colors but also by the ability of a newly described morph to change color. The findings add further support to the hypothesis that maintenance of this complex color polymorphism likely involves a response to seasonal change in the abundance of green foliage, perhaps driven by differential predation on green and brown frogs that are either plastic or fixed in color.
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.