Anal Fin Morphology and Gonadal Histopathology in Mosquitofish (Gambusia holbrooki) Exposed to Treated Municipal Sewage Effluent

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Title Anal Fin Morphology and Gonadal Histopathology in Mosquitofish (Gambusia holbrooki) Exposed to Treated Municipal Sewage Effluent
Author Leusch, F. D. L.; Chapman, H. F.; Kay, G. W.; Gooneratne, S. R.; Tremblay, L. A.
Journal Name Archives of Environmental Contamination and Toxicology
Year Published 2006
Place of publication United States
Publisher Springer
Abstract Feral mosquitofish living in undiluted treated municipal sewage in Queensland, Australia, were examined for morphologic abnormalities indicative of reproductive dysfunction. Male and female mosquitofish were captured at two sites receiving undiluted treated sewage and compared with those captured at a reference site. Several morphologic end points were examined, including length of the fourth and sixth anal fin rays and gonadal histology. Both male and female mosquitofish at one site exhibited minor elongation of the fourth anal fin ray consistent with exposure to androgenic stimulation, although the spatial extent of the effect was limited and not significant at other sites further downstream. No incidences of intersex were found. These findings suggest that the level of treatment of domestic sewage at the two sewage treatment plants assessed is adequate to prevent reproductive abnormalities in exposed mosquitofish populations.
Peer Reviewed Yes
Published Yes
Alternative URI http://dx.doi.org/10.1007/s00244-005-1040-5
Volume 50
Issue Number 4
Page from 562
Page to 574
ISSN 0090-4341
Date Accessioned 2009-11-04
Date Available 2010-02-15T06:50:34Z
Language en_AU
Research Centre Griffith Centre for Coastal Management
Faculty Faculty of Science, Environment, Engineering and Technology
Subject PRE2009-Cross discipline
URI http://hdl.handle.net/10072/28780
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1a

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