Brazil France Germany India Indonesia Iraq South Africa
Sign up for our
free e-newsletter.

Case Studies
Water Management Associations
Endocrine Disruptors in Lakes are Becoming an Emerging Concern
Every spring, Dr. Carl Isaacson, a professor of environmental studies at Bemidji State University, sends his students out to collect perch from waters across Minnesota.

Then, they study an egg yolk protein found in the perchs’ livers, called vitellogenin, which may provide evidence of endocrine disruption in the state’s aquatic species.

Over the past few years, studies of Minnesota’s waters have found a variety of unregulated chemicals -- such as pharmaceuticals, fragrances, fire retardants, detergents and insecticides -- which are widespread in the state’s lakes and rivers.

When male fish are exposed to EACs, they can start to develop female attributes, such as increased vitellogenin concentrations; in more extreme instances, male fish have also been found to produce eggs in their testes.

And while these chemicals have been linked to health problems such as infertility and different types of cancer, “it’s too soon to say whether feminized fish are indicative of health effects for humans too,” an article by National Geographic said.

Click for the full article

About Us Categories From The Gallery   News Updates News Updates

Our Company
Case Studies
Site Map


Invasive Plant Could Cost Salmon Industry $159 Million Annually - A common aquarium plant illegally dumped into Alaskan waters that has adapted to cold weather could threaten wild salmon habitat and cost the commercial fishing industry hundreds of millions of dollars.

© 2010 Copyright Aquarius Systems. All Rights Reserved.   |   (262) 392-2162