English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Reproductive Consequences of Exposure to Waterborne Phytoestrogens in Male Fighting Fish Betta splendens

Stevenson, L. M., Brown, A. C., Tracy, M. M., & Clotfelter, E. D. (2011). Reproductive Consequences of Exposure to Waterborne Phytoestrogens in Male Fighting Fish Betta splendens. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY, 60(3), 501-510. doi:10.1007/s00244-010-9561-y.

Item is

Basic

show hide
Genre: Journal Article

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Stevenson, Louise M.1, Author
Brown, Alexandria C.1, Author
Tracy, M. Montgomery1, Author              
Clotfelter, Ethan D.1, Author
Affiliations:
1external, ou_persistent22              

Content

show
hide
Free keywords: PAPER-MILL EFFLUENTS; GOLDFISH CARASSIUS-AURATUS; TROUT ONCORHYNCHUS-MYKISS; MOSQUITOFISH GAMBUSIA-HOLBROOKI; ENDOCRINE MODULATING ACTIONS; CATFISH ICTALURUS-PUNCTATUS; MEDAKA ORYZIAS-LATIPES; MALE FATHEAD MINNOWS; WOOD-RELATED STEROLS; RAINBOW-TROUTEnvironmental Sciences & Ecology; Toxicology;
 Abstract: Phytoestrogens are plant compounds that can act as endocrine disruptors in vertebrates. Biologically active levels of phytoestrogens have been found in aquatic habitats near wood pulp and paper mills, biofuel manufacturing plants, sewage-treatment plants, and agricultural fields. Phytoestrogens are known to cause hormonal and gonadal changes in male fish, but few studies have connected these effects to outcomes relevant to reproductive success. In one experiment, we exposed sexually mature male fighting fish Betta splendens to environmentally relevant (1 mu g L-1) and pharmacological concentrations (1000 mu g L-1) of the phytoestrogen genistein as well as to a positive control of waterborne 17 beta-estradiol (E2; 1 mu g L-1), and a negative control of untreated water. In a second experiment, we exposed male B. splendens to environmentally relevant concentrations (1 mu g L-1) of genistein and beta-sitosterol singly and in combination as well as to the positive and negative controls. All exposures were 21 days in duration. We measured sex-steroid hormone levels, gonadosomatic index (GSI), sperm concentration and motility, and fertilization success in these fish. We found that exposure to genistein did not affect circulating levels of the androgen 11-ketotestosterone or the estrogen E2 relative to negative-control fish. We also found that neither of the compounds nor their mixture affected GSI, sperm concentration or motility, or fertilization success in exposed fish relative to negative-control fish. However, fish exposed to phytoestrogens showed some evidence of fewer but more motile sperm than fish exposed to the positive control E2. We conclude that sexually mature male B. splendens are relatively immune to reproductive impairments from short-term exposure to waterborne phytoestrogens.

Details

show
hide
Language(s): eng - English
 Dates: 2011
 Publication Status: Published in print
 Pages: 10
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: ISI: 000291979500014
DOI: 10.1007/s00244-010-9561-y
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: 233 SPRING ST, NEW YORK, NY 10013 USA : SPRINGER
Pages: - Volume / Issue: 60 (3) Sequence Number: - Start / End Page: 501 - 510 Identifier: ISSN: 0090-4341