Estrogen knocks out fish in whole-lake experiment

Pelley, Janet

doi:10.1021/es032555a

Cited by 29 publications

(16 citation statements)

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“…These results are confirmed by outdoor experiments from Ontario, where the addition of EE2 to a lake eradicated a population of 7,000 fathead minnows. The measured concentration of EE2 amounted to 5-6 ng/L (Pelley 2003). The exposure of zebra fish to 5 ng EE2/L for 210 days decreased the reproductive success by 56% because the males of the F 1 generation showed normal male reproductive behavior but were lacking functional testes because of defective sexual differentiation.…”

Section: Assessment Criteriamentioning

confidence: 99%

Effect-related monitoring: estrogen-like substances in groundwater

Kuch

Kern

Metzger

et al. 2009

Environ Sci Pollut Res

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On the one hand, further analyses of samples taken from possible pollution sources should be conducted in order to characterize the extent of groundwater pollution with xenoestrogens. On the other hand, the most potent individual compounds should be identified according to their estrogenic potency. To this end, bioassay-directed fractionation and structure elucidation should be carried out with concentrated samples.

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Section: Assessment Criteriamentioning

confidence: 99%

Effect-related monitoring: estrogen-like substances in groundwater

Kuch

Kern

Metzger

et al. 2009

Environ Sci Pollut Res

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“…13 Although the concentration of these steroid hormones in natural aquatic environments is in the very low nanogram per liter range (10-1830 ng/L), it is very important to understand their environmental fate due to their extremely high biological potency and procreation toxicity. 5,[14][15][16] Steroid hormones are known to degrade rapidly in the presence of high intensity UV-C (254 nm), and many degradation studies of these hormones are available in the literature using advanced oxidation processes (AOP) such as semiconductor photocatalysis, UV/H 2 O 2 UV/O 3 , O 3 /H 2 O 2 , etc. 17,18 However very little information is available about their environmental fate, transport, and degradation in natural water.…”

Section: Introductionmentioning

confidence: 99%

Photodegradation of Estrone in Solar Irradiation

Chowdhury

Charpentier

Ray

2010

Ind. Eng. Chem. Res.

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The photodegradation of the steroid estrone (E1), an endocrine disrupting hormone which is commonly released into aquatic environments, was investigated in aqueous solution using natural sunlight (290-700 nm) produced using a solar simulator. The degradation of E1 was found to follow pseudo-first-order kinetics, with the rate constant decreasing slightly with increasing initial concentration and varying linearly with solar intensity in the region of 25-100 mW cm -2 . The half-life of E1 using 1 Sun (100 mW cm -2 ) was measured to be 52.50 min in natural conditions. The rate of mineralization based on total organic carbon (TOC) reduction was lower than E1 degradation, while the TOC of the solution decreased steadily with increased irradiation time.In the presence of humic acid, the photodegradation rate increased significantly, attributed to photosensitization by the reactive species. The solution pH also had a considerable effect on the rate with maximum degradation occurring around neutral pH of 7.

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“…However, Kidd et al (2007) have shown that experimental exposure of the fish Pimephales promelas to realistic concentrations (5-6 ng L −1 ) of EE2 in a lake led to feminization of males and altered oogenesis in females, thus leading to the collapse of fish population. However, longer-lived fish species (pearl dace, white sucker, and trout) from the experimental lake did not show any effects of EE2 exposure on their population structures (Pelley, 2003;Kidd et al, 2007).…”

Section: Fishmentioning

confidence: 81%