Constructed wetlands for sewage effluent treatment and mosquito larvae at two sites in subtropical Australia

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Title Constructed wetlands for sewage effluent treatment and mosquito larvae at two sites in subtropical Australia
Author Dale, Patricia Ellen; Greenway, Margaret; Chapman, Heather Faye; Breitfuss, Mark Juergen
Journal Name Journal of the American Mosquito Control Association
Year Published 2007
Place of publication United States
Publisher American Mosquito Control Association
Abstract This study of 2 wetlands in subtropical Australia, constructed to treat sewage effluent, examined the relationships between dips positive for mosquito larvae and water quality, operational status of the system, vegetation, and nontarget macroinvertebrates. One site is inland and the other is close to the coast. Larvae of disease vector mosquitoes were present at various times in the wetlands, especially in summer and autumn. The proportion of early instars (1st and 2nd) was greater than that of later ones (3rd and 4th). Dissolved oxygen was negatively, and temperature was positively, associated with the proportion of dips containing larvae. For the coastal site we noted that larvae were more common during draw-down of water for maintenance and also as the system started to come online. Vegetation associated with larvae included dense Typha orientalis and algae. Where there were several types of plants, such as at the coastal site, plant density and water depth were not significantly related to larval presence. Where there were several types of macroinvertebrates there were fewer dips positive for larvae. To provide water treatment capacity and minimal mosquito production we concluded that design should include a variety of plant types, discouraging low dissolved oxygen (for example, by aeration) and ongoing maintenance should be carried out in winter or spring, when mosquitoes are fewer than in summer. Keywords: Subtropical, constructed wetlands, mosquito larvae, water characteristics, vegetation, macroinvertebrates, Culex quinquefasciatus Say, Culex annulirostris Skuse, Anopheles annulipes
Peer Reviewed Yes
Published Yes
Publisher URI http://www.mosquito.org/default.aspx
Alternative URI http://dx.doi.org/10.2987/8756-971X(2007)23[109:CWFSET]2.0.CO;2
Copyright Statement Copyright 2007 American Mosquito Control Association. Please refer to the journal link for access to the definitive, published version.
Volume 23
Issue Number 2
Page from 109
Page to 117
ISSN 8756-971X
Date Accessioned 2007-12-12
Date Available 2009-09-17T07:23:54Z
Language en_AU
Research Centre Griffith Centre for Coastal Management
Faculty Faculty of Science, Environment, Engineering and Technology
Subject PRE2009-Biotechnology
URI http://hdl.handle.net/10072/16525
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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