• Pacific Treefrogs, one, two, or three species?

    Pacific Treefrogs, one, two, or three species?

    Evolutionary divergence in sexual signals may lead to and maintain reproductive isolation between populations. Both selective forces—such as ecological and sexual selection—and random processes like genetic drift may influence the diversification of sexual signals. Understanding the patterns and sources of intraspecific variation in sexual signals among populations can inform the stages of differentiation and speciation.…

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  • Burmese Python Nest in Great Cypress Swamp

    Burmese Python Nest in Great Cypress Swamp

    Lisa McBride, a U.S. Geological Survey (USGS) biologist, led a study to document a record-setting Burmese python nest found in Big Cypress National Preserve in 2022. McBride’s work details the python’s nesting behaviors and provides the first comprehensive photographic evidence of the brooding process in the wild. In 2022, a radio-tagged female python led researchers…

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  • Jurassic reptile fossil discovery blurs the line between snake and lizard

    Jurassic reptile fossil discovery blurs the line between snake and lizard

    by American Museum of Natural History edited by Sadie Harley, reviewed by Robert Egan New research has uncovered a species of hook-toothed lizard that lived about 167 million years ago and has a confusing set of features seen in snakes and geckos—two very distant relatives. One of the oldest relatively complete fossil lizards yet discovered, the Jurassic specimen…

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  • Discovering the lightbulb lizards of Ecuador

    Discovering the lightbulb lizards of Ecuador

    Alejandro Arteaga, a herpetologist in Ecuador sent out out the following email. If you have the resources for helping Alejandro I encourage you to do so. Today, I want to reveal a project I have been advancing in secret. During the past five years, my team and I have been studying an enigmatic group of…

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