Cargando…

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

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 recyc...

Descripción completa

Detalles Bibliográficos
Autores principales: Fentress, Jennifer A., Steele, Stacy L., Bart, Henry L., Cheek, Ann Oliver
Formato: Texto
Lenguaje:English
Publicado: National Institute of Environmental Health Sciences 2006
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1332654/
https://www.ncbi.nlm.nih.gov/pubmed/16393656
http://dx.doi.org/10.1289/ehp.8130
_version_ 1782126544771088384
author Fentress, Jennifer A.
Steele, Stacy L.
Bart, Henry L.
Cheek, Ann Oliver
author_facet Fentress, Jennifer A.
Steele, Stacy L.
Bart, Henry L.
Cheek, Ann Oliver
author_sort Fentress, Jennifer A.
collection PubMed
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 (E(2)), 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.
format Text
id pubmed-1332654
institution National Center for Biotechnology Information
language English
publishDate 2006
publisher National Institute of Environmental Health Sciences
record_format MEDLINE/PubMed
spelling pubmed-13326542006-01-25 Reproductive Disruption in Wild Longear Sunfish (Lepomis megalotis) Exposed to Kraft Mill Effluent Fentress, Jennifer A. Steele, Stacy L. Bart, Henry L. Cheek, Ann Oliver Environ Health Perspect Research 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 (E(2)), 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. National Institute of Environmental Health Sciences 2006-01 2005-09-07 /pmc/articles/PMC1332654/ /pubmed/16393656 http://dx.doi.org/10.1289/ehp.8130 Text en http://creativecommons.org/publicdomain/mark/1.0/ Publication of EHP lies in the public domain and is therefore without copyright. All text from EHP may be reprinted freely. Use of materials published in EHP should be acknowledged (for example, ?Reproduced with permission from Environmental Health Perspectives?); pertinent reference information should be provided for the article from which the material was reproduced. Articles from EHP, especially the News section, may contain photographs or illustrations copyrighted by other commercial organizations or individuals that may not be used without obtaining prior approval from the holder of the copyright.
spellingShingle Research
Fentress, Jennifer A.
Steele, Stacy L.
Bart, Henry L.
Cheek, Ann Oliver
Reproductive Disruption in Wild Longear Sunfish (Lepomis megalotis) Exposed to Kraft Mill Effluent
title Reproductive Disruption in Wild Longear Sunfish (Lepomis megalotis) Exposed to Kraft Mill Effluent
title_full Reproductive Disruption in Wild Longear Sunfish (Lepomis megalotis) Exposed to Kraft Mill Effluent
title_fullStr Reproductive Disruption in Wild Longear Sunfish (Lepomis megalotis) Exposed to Kraft Mill Effluent
title_full_unstemmed Reproductive Disruption in Wild Longear Sunfish (Lepomis megalotis) Exposed to Kraft Mill Effluent
title_short Reproductive Disruption in Wild Longear Sunfish (Lepomis megalotis) Exposed to Kraft Mill Effluent
title_sort reproductive disruption in wild longear sunfish (lepomis megalotis) exposed to kraft mill effluent
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1332654/
https://www.ncbi.nlm.nih.gov/pubmed/16393656
http://dx.doi.org/10.1289/ehp.8130
work_keys_str_mv AT fentressjennifera reproductivedisruptioninwildlongearsunfishlepomismegalotisexposedtokraftmilleffluent
AT steelestacyl reproductivedisruptioninwildlongearsunfishlepomismegalotisexposedtokraftmilleffluent
AT barthenryl reproductivedisruptioninwildlongearsunfishlepomismegalotisexposedtokraftmilleffluent
AT cheekannoliver reproductivedisruptioninwildlongearsunfishlepomismegalotisexposedtokraftmilleffluent