Male fertility, an issue for many species

(Institut national de la recherche scientifique - INRS) In the St. Lawrence River near Montreal's sewage discharge site, male spottail shiners show the effects of pollution with more than one third of the fish having oocytes in their testes. This is one of many examples of Professor Daniel Cyr's research at INRS, during which he has studied the effects of human activity on male fertility in various species, including man. He was recently awarded a Canada Research Chair in Reproductive Toxicology...