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Reproductive Disruption in Wild Longear Sunfish (Lepomis megalotis) Exposed to Kraft Mill Effluent

Environmental health perspectives, 2006-01, Vol.114 (1), p.40-45 [Peer Reviewed Journal]

COPYRIGHT 2006 National Institute of Environmental Health Sciences ;Copyright National Institute of Environmental Health Sciences Jan 2006 ;2006 ;ISSN: 0091-6765 ;EISSN: 1552-9924 ;DOI: 10.1289/ehp.8130 ;PMID: 16393656

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Title:
Reproductive Disruption in Wild Longear Sunfish (Lepomis megalotis) Exposed to Kraft Mill Effluent
Author: Fentress, Jennifer A. ; Steele, Stacy L. ; Bart, Henry L. ; Cheek, Ann Oliver
Subjects: Animals ; Body size ; Breeding seasons ; Constituents ; Copyrights ; Disruption ; Effluents ; Estradiol - blood ; Female ; Female animals ; Females ; Fish ; Freshwater ; Freshwater fishes ; Health ; Hormones ; Industrial effluents ; Industrial Waste - adverse effects ; Kraft pulp ; Lepomis megalotis ; Louisiana ; Male ; Male animals ; Males ; Mills ; Perciformes - blood ; Physiology ; Pulp and paper mill effluents ; Pulp mills ; Receiving ; Recycled ; Reproduction ; Reproduction - drug effects ; Rivers ; Sex ; Sunfish ; Testosterone ; Testosterone - analogs & derivatives ; Testosterone - blood ; Upstream ; Vitellogenins - blood ; Waste Disposal, Fluid
Is Part Of: Environmental health perspectives, 2006-01, Vol.114 (1), p.40-45
Description: Worldwide, wild fish living in rivers receiving municipal and industrial discharges may experience endocrine disruption as a result of exposure to anthropogenic pollutants. The purpose of this study was to evaluate the hormonal status of wild fish in a U.S. river receiving unbleached kraft and recycled pulp mill effluent (Pearl River at Bogalusa, LA). We evaluated two alternative hypotheses: the effluent contained constituents that suppressed male and female reproduction, or it contained an androgenic substance that masculinized females. To evaluate the likelihood of fish exposure to effluent, we marked 697 longear sunfish (Lepomis megalotis) over a 2-year period; 83% of recaptured fish were found at the site of initial capture, and only one fish migrated from an effluent-receiving site to a reference site. We can reasonably assume that fish captured from an effluent-receiving site are residents, not transitory migrants. To diagnose endocrine disruption, we measured sex steroid hormone [17β-estradiol ( E2), testosterone (T), and 11-ketotestosterone (11KT)] and vitellogenin (VTG) concentrations in male and female longear sunfish captured at two sites upstream and two sites downstream of the effluent outfall. Kraft pulp mill effluent did not affect male reproductive physiology but did suppress female T and VTG levels when effluent constituted ≥ 1% of river flow. Masculinization was not observed. Longear sunfish in the Pearl River experience moderate reproductive suppression in response to unbleached kraft and recycled pulp mill effluent.
Publisher: United States: National Institute of Environmental Health Sciences. National Institutes of Health. Department of Health, Education and Welfare
Language: English
Identifier: ISSN: 0091-6765
EISSN: 1552-9924
DOI: 10.1289/ehp.8130
PMID: 16393656
Source: U.S. Government Documents
MEDLINE
PubMed Central
ProQuest Central
DOAJ Directory of Open Access Journals

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Reproductive Disruption in Wild Longear Sunfish (Lepomis megalotis) Exposed to Kraft Mill Effluent

COPYRIGHT 2006 National Institute of Environmental Health Sciences ;Copyright National Institute of Environmental Health Sciences Jan 2006 ;2006 ;ISSN: 0091-6765 ;EISSN: 1552-9924 ;DOI: 10.1289/ehp.8130 ;PMID: 16393656

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