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Amphibian survey at Oncol National Park, Los Rios, Chile

Late in 2014, our team performed an amphibian survey at Oncol National Park, Los Rios, Chile.  One of the amphibians encountered was this mature adult male Alsodes norae.  When males are ready to breed, they develop the spines on their chest that can be seen in one of the images below.  Their forearms also become larger and more robust.  These things presumably allow males to hold onto females in the prereproductive embrace known as “amplexus.”

Alsodes norae, mature male,  LR-M

Alsodes norae, mature male, No6, LR-M

admin in Uncategorized on February 02 2015 » 0 comments
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