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:scratch: This concept might transfer over to bees!?

The presence of
vitellogenin (VTG), an egg yolk protein, in male fish is used as a bio-indicator of exposure to environmental
estrogens.

http://web.stcloudstate.edu/hschoenfuss/Levitt et al NGWA 01.pdf

191
Possible Effects of Endocrine Disrupting Compounds on Walleye, Stizostedion vitreum,
Near the Metro Sewage Treatment Plant, Saint Paul, Minnesota
James T. Levitt, Heiko L. Schoenfuss, and Ira R. Adelman
Department of Fisheries and Wildlife, University of Minnesota, 200 Hodson Hall, 1980 Folwell
Avenue, St. Paul, MN 55108
Abstract
Recent studies in the United Kingdom and the United States have reported the presence of estrogenic
compounds, natural and synthetic, in treated domestic and industrial sewage effluent. The presence of
vitellogenin (VTG), an egg yolk protein, in male fish is used as a bio-indicator of exposure to environmental
estrogens.
This research is attempting to determine if endocrine disrupting chemicals are having a significant
effect on the gonadal histopathology of male and female walleye (Stizostedion vitreum) exposed to sewage
treatment plant (STP) effluent. In 2000, male walleye collected from the Metro STP effluent channel had
elevated VTG levels, no expressible milt and one case of intersexed testes, while upstream the males had low
VTG concentrations and expressible milt. Female walleye were found with atretic ovaries at the Metro STP and
the reference site. The frequency of gonadal abnormalities appearing in walleye collected in the Metro STP
effluent channel suggests that the effluent is having a pathological effect on this species. These preliminary
findings address the need for further investigation into the effects of the effluent on gonadal histopathology.
Keywords: Environmental Estrogens, Walleye, Histopathology, Sewage Effluent

Comments are welcomed,
Ernie
 

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i meant cracking the bee boxes open. But if that nutra bee is every thing it is cracked up to be i would be surprised if it did that too! :D
 
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