Cat-fish Started Eating Mice Due to Frequent Rains in Australia

08.09.2016

Experts of Murdoch University (Australia) found that the usual diet of catfish species Neoarius graeffei changed due to the frequent heavy rains. Floods provide fish with readily available food, as mouse burrows located on the banks are flooded by rivers.

Cat-fish Started Eating Mice Due to Frequent Rains in Australia

Previously it was thought that this species feed on crustaceans, aquatic plants, shellfish, insects, fruits and small fish. However, scientists have discovered the remains of jerboa mice, Australian endemics, in the stomachs of 44% of the catfish living in the Ashburton river. The river flows in the arid areas, and mice make their holes, connected by a system of tunnels along the banks. When river overflows after a heavy rain, rodents are in the water and become easy prey.

According to biologists, this fact is of great importance for understanding the processes occurring in the ecosystems of the country influenced by climate change.