Sydney, April 28 : A new Australian study has suggested that reef fish, which are stressing about environmental changes, are creating irregular offspring that have wonky ears.
According to a report by ABC News, the study shows a clear link between mothers producing the stress hormone cortisol, and the development of asymmetrical ears in the offspring of the common coral reef fish, Pomacentrus amboinensis.
Most animals produce the hormone cortisol as a response to stress. Reef fish typically produce it in response to an encounter with a predator.
"Cortisol is needed for development," said study lead author Dr Monica Gagliano of James Cook University in Townsville.