Amazing Amphibian Milk: First Images of Parental Nutrition in Ecuadorian Lungless Salamanders

Quito, Ecuador - March 8, 2024 -  In a groundbreaking discovery, researchers from  the  Pontificia Universidad Católica del Ecuador (PUCE) have captured the first-ever images of parental care in lungless salamanders. The remarkable photos depict a tiny amphibian species, the Osorno's mountain salamander (Bolitoglossa osornorum),  producing a milk-like secretion to nourish its hatchlings.

This unique adaptation,  previously unknown in amphibians,  challenges our understanding of parental investment in the animal kingdom.  Lungless salamanders are typically known for laying their eggs in damp environments and leaving the young to fend for themselves.

"We were astounded to see these salamander hatchlings clustered around a milky white fluid secreted by the skin of the mother," said Dr. Cristina Mariño, lead researcher on the project. "Further analysis revealed the fluid is rich in proteins and fats,  providing essential  nutrients for the developing tadpoles."

The discovery of amphibian milk production has significant implications for our understanding of amphibian evolution and the diverse strategies employed by different species to ensure offspring survival.  Further research is ongoing to  determine the exact composition of the 'milk' and its role in  the  salamander's  reproductive cycle.