Tag Archives: foam nest

Meet the Foam Nest

Physalaemus petersi communal foam nest in Ecuador  (Photo Credit: Mónica Guerra)

Physalaemus petersi communal foam nest in Ecuador
(Photo Credit: Mónica Guerra)

Reproductive modes in frogs vary greatly, as do the ways in which they deposit their eggs. The túngara frog, Physalaemus pustulosus (=Engystomops), which is the main focus in my lab constructs a “foam” nest–an adaptive character which I’ve become interested in exploring. Foamy substances are produced by some insects, tunicates, fish and, perhaps most famously, frogs.

Foam nests may be constructed by frogs in trees, underground burrows, on top of water, or nearby water sources. This phenomenon has evolved independently several times in both old and new world frogs, living in tropical and subtropical areas. Continue reading

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