Feminization of Longnose Dace (<i>Rhinichthys cataractae</i>) in the Oldman River, Alberta, (Canada) Provides Evidence of Widespread Endocrine Disruption in an Agricultural Basin

<table>Stained sections of longnose dace gonads illustrating: (a) a normal female ovary showing different stages of oogenesis; (b) a normal male testes; (c) intersex gonads from Popson Park; (d) intersex testes from Highway 2.  All fish were sampled from the Oldman River during August and September 2009.  The dark lines in intersex gonads are wrinkles in the tissue produced by slicing. Scale bars are approximate.</table>

Scientifica

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Figure 4

Figure 4: Feminization of Longnose Dace (<i>Rhinichthys cataractae</i>) in the Oldman River, Alberta, (Canada) Provides Evidence of Widespread Endocrine Disruption in an Agricultural Basin 

Figure 4 | Feminization of Longnose Dace (Rhinichthys cataractae) in the Oldman River, Alberta, (Canada) Provides Evidence of Widespread Endocrine Disruption in an Agricultural Basin 