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The relationships between stocking density and welfare in farmed rainbow trout
There is increasing public, governmental and commercial interest in the welfare of intensively farmed fish and stocking density has been highlighted as an area of particular concern. Here we drawExpand
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Survey of estrogenic activity in United Kingdom estuarine and coastal waters and its effects on gonadal development of the flounder Platichthys flesus
Estrogenic discharges are known or suspected to be present in many United Kingdom estuaries and are also occurring from offshore oil and gas installations. The aim of this study was to establishExpand
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Bile Acid Secreted by Male Sea Lamprey That Acts as a Sex Pheromone
We show that reproductively mature male sea lampreys release a bile acid that acts as a potent sex pheromone, inducing preference and searching behavior in ovulated female lampreys. The secreted bileExpand
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Several synthetic progestins with different potencies adversely affect reproduction of fish.
Synthetic progestins are widely used as a component in both contraceptives and in hormone replacement therapy (HRT), both on their own and in combination with EE2. Their presence in the environmentExpand
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Vitellogenesis as a biomarker of reproductive disruption by xenobiotics
There is increasing evidence that many xenobiotic chemicals can reduce the reproductive capacity of fish through disruption of the endocrine system. Hepatic stimulation of vitellogenesis in male andExpand
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Measurement of fish steroids in water--a review.
Measurement of fish steroids in water provides a non-invasive alternative to measurement in blood samples, offering the following advantages: zero or minimal intervention (i.e. no anaesthetic,Expand
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A non‐invasive stress assay based upon measurement of free cortisol released into the water by rainbow trout
A procedure previously used for sex steroids was adapted to extract free cortisol and cortisone from water samples taken from rainbow trout Oncorhynchus mykiss tanks. Both corticosteroids could beExpand
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The role of the maturation-inducing steroid, 17,20beta-dihydroxypregn-4-en-3-one, in male fishes: a review.
The major progestin in teleosts is not progesterone, as in tetrapods, but 17,20beta-dihydroxypregn-4-en-3-one (17,20beta-P) or, in certain species, 17,20beta,21-trihydroxy-pregn-4-en-3-oneExpand
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Detection of environmental androgens: a novel method based on enzyme-linked immunosorbent assay of spiggin, the stickleback (Gasterosteus aculeatus) glue protein.
We report the development and validation of a novel in vivo biomarker test for waterborne androgens. During breeding, male sticklebacks (Gasterosteus aculeatus) manufacture a glue protein, spiggin,Expand
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Reproductive responses in fathead minnow and Japanese medaka following exposure to a synthetic progestin, Norethindrone.
Synthetic progestins, such as Norethindrone (NET), are common ingredients in oral contraceptives and in treatment for post-menopausal problems. Given the widespread use of oral contraceptives andExpand
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