Caecilian mothers grow a fatty skin layer for their babies to tear off and eat.
Caecilians are weird, mysterious creatures. They look sort of like huge worms or small snakes, but they're really, lesser-known relatives of frogs and salamanders. They lead secretive lives, generally hidden from view in soil or stream beds.
Many animals are known to pass microbes to the next generation through parental care in some way, but this is the first direct evidence of it happening in any amphibian. And of all the amphibian species it could be, the study's authors found this happening in caecilians. On the other hand, baby caecilians may receive significant care from their mothers. Even after the period of
The study found that bacteria from the environment were the least important source for microbiomes of young caecilians. But all juveniles shared at least some of their skin and gut microbiomes with their mothers, which they obtained via both skin feeding and coiling.
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