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Estrogenic consequences of trace organics - SF0303

Description
R&D Summary Objectives:- Establish a clearer understanding of the freshwater links between the observed estrogenic effects in fish and sewage effluents, the contraceptive pill and other organic contaminants, and the significance of this for fish population structure. Key customer purpose:- Respond to public concerns particularly among the angling community, as to the ecological significance of the observed effects, particularly in relation to stocks of freshwater fish species.
Objective
In order to be able to answer the questions indicated above there is a need to establish via long term laboratory and field exposures the impact of vitellogenin production in male fish on their reproduction capacity and the effect of premature vitellogenin production on the growth and potential reproduction success of female fish. It is also necessary to establish within what distance of a sewage works effluent discharge this occurs and whether the effect differs according to the type of treatment provided at the sewage works before the effluent is discharged. Although 17 a-ethynyl estradiol is known to be a particularly potent inducer of vitellogenesis it is also known that a number of other substances can cause the same effect. It is important to establish which compound(s) is responsible for the effect observed to be induced when fish are exposed to sewage effluents in the field.
Project Documents
• Final Report : SF0303: Final report Oestrogenic consequences of trace organics   (28k)
Time-Scale and Cost
From: 1992

To: 1996

Cost: £385,830
Contractor / Funded Organisations
CEFAS
Keywords
              
Fields of Study
Freshwater Fisheries