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The occurrence and environmental fat...

Kolodziej, Edward Peter.

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The occurrence and environmental fate of steroid hormones with endocrine and pheromonal activity in fish.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	The occurrence and environmental fate of steroid hormones with endocrine and pheromonal activity in fish./
作者:	Kolodziej, Edward Peter.
面頁冊數:	213 p.
附註:	Source: Dissertation Abstracts International, Volume: 66-02, Section: B, page: 1103.
Contained By:	Dissertation Abstracts International66-02B.
標題:	Engineering, Environmental. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3165447
ISBN:	0542008734

The occurrence and environmental fate of steroid hormones with endocrine and pheromonal activity in fish.
Kolodziej, Edward Peter.

The occurrence and environmental fate of steroid hormones with endocrine and pheromonal activity in fish. - 213 p.

Source: Dissertation Abstracts International, Volume: 66-02, Section: B, page: 1103.

Thesis (Ph.D.)--University of California, Berkeley, 2004.

The occurrence and fate of estrogenic and androgenic steroid hormones in the aquatic environment is of concern because these compounds have been implicated in endocrine disruption. Also, many species of fish use steroid hormones as reproductive pheromones to initiate behavioral and physiological changes during spawning. Therefore, to assess the potential for anthropogenic sources of steroids to affect endocrine system function or pheromonal communication in sensitive species of fish, it is important to quantify the occurrence and fate of steroid hormones in the aquatic environment.

ISBN: 0542008734Subjects--Topical Terms:

783782
Engineering, Environmental.

The occurrence and environmental fate of steroid hormones with endocrine and pheromonal activity in fish.
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245 1 4 $a The occurrence and environmental fate of steroid hormones with endocrine and pheromonal activity in fish.
300 $a 213 p.
500 $a Source: Dissertation Abstracts International, Volume: 66-02, Section: B, page: 1103.
500 $a Chair: David L. Sedlak.
502 $a Thesis (Ph.D.)--University of California, Berkeley, 2004.
520 $a The occurrence and fate of estrogenic and androgenic steroid hormones in the aquatic environment is of concern because these compounds have been implicated in endocrine disruption. Also, many species of fish use steroid hormones as reproductive pheromones to initiate behavioral and physiological changes during spawning. Therefore, to assess the potential for anthropogenic sources of steroids to affect endocrine system function or pheromonal communication in sensitive species of fish, it is important to quantify the occurrence and fate of steroid hormones in the aquatic environment.
520 $a Quantification of steroids at trace concentrations (i.e., &sim;1 ng/L) in environmental samples was accomplished with a sensitive analytical technique employing solid phase extraction and gas chromatography-tandem mass spectrometry. Under optimal conditions, this analytical method had detection limits of 0.1 ng/L for steroid hormones.
520 $a To assess the occurrence and fate of steroids with pheromonal properties in municipal wastewater effluent and in the environment, five steroids were quantified in wastewater effluent, groundwater wells, and an engineered treatment wetland. Estrogens (i.e., 17beta-estradiol, estrone), androgens (i.e., testosterone, androstenedione), and medroxyprogesterone were detected in municipal wastewater effluent at concentrations up to 15 ng/L. Data from an effluent-receiving engineered treatment wetland and groundwater wells suggest that these compounds are not rapidly attenuated. The measured concentrations of steroids exceeded olfactory detection thresholds at which fish detect these steroids and were comparable to levels at which pheromonal responses have been observed.
520 $a To assess the importance of other sources of steroids to surface waters, seven steroids were quantified in samples from dairy farms, aquaculture facilities, and surface waters with actively spawning fish. In a dairy waste lagoon, 17beta-estradiol, estrone, testosterone, progesterone, and androstenedione were detected at concentrations as high as 650 ng/L. Samples from associated groundwater wells indicated significant removal of steroids in the subsurface. Steroids were sporadically detected in samples from nearby surface waters and tile drains, often at concentrations near or below 1 ng/L. Also, estrone, testosterone, and androstenedione were detected in effluents of fish hatcheries and in a river containing spawning salmon at concentrations near 1 ng/L. These results indicate that dairy wastewater, aquaculture effluents, and spawning fish are sources that can lead to detectable concentrations of steroids in surface waters and that the concentrations of these compounds exhibit considerable temporal and spatial variation. (Abstract shortened by UMI.)
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650 4 $a Environmental Sciences. $3 676987
650 4 $a Chemistry, Analytical. $3 586156
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