The data collected did not show a correlation to the frequency of liver and skin tumors between male and female suckers, therefore, the testicular tumor finding was the only discovery directly related to the sex of tested fish.
He was told that if he did not pay HK,000 the footage would be circulated online, police said.
There is an elevated incidence of skin and liver tumors among White Suckers caught in certain Wisconsin rivers that flow into Lake Michigan according to a U. Geological Survey study recently published in the Journal of Fish Diseases.
The three-year study looked at White Sucker tumor prevalence in the Sheboygan River and Milwaukee Estuary, which have both been listed as “Areas of Concern” under the International Joint Commission Great Lakes Water Quality Agreement between the United States and Canada.
Discovering elevated levels of fish tumors in an area not designated as an AOC was not unexpected, said Blazer.
The research scientist said this non-AOC, the Root River, is close to the Milwaukee River, which has similar land and industrial runoff as the two AOCs.