Leptodactylidae
Leptodactylidae includes a group a very diverse group terrestrial frogs, which respond
to many different common names. There are 36 species in Peru, 15 in the Madre de
Dios department and 16 in the Manu area of which we include 13 species in this guide.
They vary in size and appearance with Adenomera species usually being quite small and
Leptodactylus species somewhat larger. They are dull brown, tan or grey. They are powerful
jumpers thanks to their strong long legs. They can be difficult to identify and there is still a
high level of cryptic diversity to discover, as for example in the Adenomera genus.
Leptodactylidae
Leptodactylidae species are known for the production of eggs in foam nests composed of
glandular secretions whisked up using the hind legs. These nests are deposited at the edge
of water bodies or in chambers away from water. Only 6-10% of the eggs are fertilized
and those remaining are eaten by developing tadpoles. The deposition of surplus eggs
is thought to be a reproductive strategy that promotes tadpoles to stay within the nest
thereby reducing the risk of predation. Similarly, some Adenomera species produce eggs
rich in yolk to nourish their tadpoles. Other theories for the use of foam nests include
protection from desiccation, improved oxygen supply and temperature control.
Leptodactylus pentdadactylus