Caught in Avacha Bay in Kamchatka Red Book otter died in Primorye Oceanarium from heart failure, which was probably caused by the fact that up to this for a long time lived in dirty water, said on Thursday the external relations department of the oceanarium, Far Eastern Branch of RAS.
Callan, listed in the Red Book of Russia, lived in survival of the pipe treatment plant in Petropavlovsk-Kamchatsky. In the bay, where he lived, were sporadic fuel leaks. In addition, the animal had to eat contaminated invertebrates. After the state of the sea otter has worsened, the researchers decided to catch the animal and return it to rehabilitation in the aquarium under construction in Primorye.
According to the aquarium, sea otter died soon after was transferred to the Maritime region.
"The invited experts together with veterinarians oceanarium FEB RAS produced animal autopsy and took the required tests, resulting in it was found that the immediate cause of death was increasing cardiovascular failure, which results from chronic enterocolitis in the acute stage," — said in a statement.
Veterinarians suggest that the cause of the disease served as anaerobic infection, and its course was complicated by pulmonary edema. All of this could be due to improper nutrition.
"In this case, the cause of the disease could be a prolonged exposure of the animal to water pollution in the city and food invertebrates, are able to accumulate heavy metals and other pollutants", — stated in the release.
Sea otters and sea otters (Enhydra lutris) were virtually exterminated the entire habitat along the northern coast of the Pacific Ocean in the XX century. Their number fell from several hundred thousand to two thousand individuals, then fishing animals was banned.