Four penguins in Sendai City's Yagiyama Zoological Park in Japan have died in quick succession, believed to be caused by avian malaria infection.
From July 9th to 19th, four Humboldt penguins at the zoo died one after another.
The zoo subsequently commissioned a research institute to conduct blood and organ examinations, and the genes of the avian malaria parasite were detected in several of the individuals. According to the official website, it was determined that avian malaria was the cause of death of the four penguins.
Avian malaria is widespread among birds and is caused by a protozoan transmitted by mosquito bites. It cannot be transmitted to humans.
After contracting avian malaria, penguins may display symptoms such as lethargy, loss of appetite, anemia, or listlessness; however, some may deteriorate rapidly and die without any obvious symptoms.
Creating an Environment Where Mosquitoes Cannot Breed Easily
Yagiyama Zoological Park stated that going forward, they will improve the uneven ground conditions of the display area to prevent puddles from forming, enhance ventilation through weed removal, create an environment less conducive to mosquito breeding, and regularly administer antimalarial drugs to lower the risk of illness.