64-13 Reproductive Hormones in the Environment

See more from this Division: Joint Sessions
See more from this Session: Subsurface Fate and Transport of Agricultural Contaminants

Tuesday, 7 October 2008: 11:40 AM
George R. Brown Convention Center, 351AD

Francis Casey1, Heldur Hakk2, Gerald Larsen2, Thomas DeSutter3, Eakalak Khan4 and Peter G. Oduor5, (1)Department of Soil Sciences, North Dakota State University, Fargo, ND
(2)Animal Metabolite and Ag. Chemical Unit, Animal Metabolite and Ag. Chemical Unit, Bioscience Research Lab, Fargo, ND
(3)Soil Science, North Dakota State University, Fargo, ND
(4)Fargo, ND
(5)Department of Geosciences, North Dakota State University, Fargo, ND
Abstract:
Low detections of reproductive hormones, at the part per trillion concentrations, are frequently measured in surface and subsurface waters. These exogenous hormones are a concern because they can bind strongly to hormone receptors in animals and induce an endocrine response or disruption. Human health concerns about acute environmental exposure to the exogenous hormones are low, but dangers from chronic exposures are unknown. Aquatic organisms, especially fish, are very sensitive to prolonged or intermittent exposures to low concentrations of exogenous reproductive hormones. Connections have been made to manure management practices at animal feeding operations (AFOs) and hormone detections in the environment. To better understand the connection between AFOs and hormones in the environment studies are needed to (i) clarify the role of AFOs with respect to environmental exposure to hormones, and (ii) identify the processes that control the fate and transport of hormones in the environment. An overview of hormone detections in surface and subsurface waters and at watershed scales will be present in context to AFOs. Also, the state of knowledge about processes that control hormone fate and transport in the environment will be presented.

See more from this Division: Joint Sessions
See more from this Session: Subsurface Fate and Transport of Agricultural Contaminants

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