M
M. J. Waldock
Researcher at Centre for Environment, Fisheries and Aquaculture Science
Publications - 48
Citations - 7856
M. J. Waldock is an academic researcher from Centre for Environment, Fisheries and Aquaculture Science. The author has contributed to research in topics: Tributyltin & Effluent. The author has an hindex of 32, co-authored 48 publications receiving 7671 citations. Previous affiliations of M. J. Waldock include Directorate of Fisheries & Environment Agency.
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Journal ArticleDOI
Identification of Estrogenic Chemicals in STW Effluent. 1. Chemical Fractionation and in Vitro Biological Screening
TL;DR: In this article, a fractionation system combined with an in vitro assay for detecting estrogenic activity was developed in order to isolate and identify the major estrogenic chemicals present in seven sewage-treatment works (STW) effluents, receiving primarily domestic effluent, discharging into British rivers.
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Identification of Estrogenic Chemicals in STW Effluent. 2. In Vivo Responses in Trout and Roach
TL;DR: The occurrence of certain natural and synthetic steroidal estrogens in the final effluent from STW has been demonstrated and the response of adult male and female roach following exposure to 17β-estradiol was compared to the response to the alkylphenolic xenoestrogen.
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The effect of algal and artificial diets on the growth and fatty acid composition of Crassostrea gigas Spat
Chris Langdon,M. J. Waldock +1 more
TL;DR: Crassostrea gigas spat were fed diets of Pavlova lutheri, Dunaliella tertiolecta or Tetraselmis suecica as discussed by the authors.
Journal ArticleDOI
Concentrations of alkylphenols in rivers and estuaries in England and Wales
M.A. Blackburn,M. J. Waldock +1 more
TL;DR: A preliminary survey of concentrations of nonylphenol and octylphenol in rivers and estuaries in England and Wales was undertaken to establish environmental concentrations and to support a biological field programme as mentioned in this paper.
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Long-Term Temporal Changes in the Estrogenic Composition of Treated Sewage Effluent and Its Biological Effects on Fish
Trevor P. Rodgers-Gray,Susan Jobling,Steven Morris,Carole Kelly,S.J Kirby,Afsaneh Janbakhsh,Jule E. Harries,M. J. Waldock,John P. Sumpter,Charles R. Tyler +9 more
TL;DR: It was established that the concentrations of natural steroid estrogens and xenoestrogens in a treated sewage effluent fluctuated temporally (over 8 months), from between 36 and 308 ng/L and between <0.2 (detection limit) and 10.7 μg/L, respectively.