Does habitat modification affect oviposition by the salt marsh mosquito, Ochlerotatus vigilax (Skuse)(Diptera: Culicida)?

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Title Does habitat modification affect oviposition by the salt marsh mosquito, Ochlerotatus vigilax (Skuse)(Diptera: Culicida)?
Author Dale, Patricia Ellen; Chapman, Heather Faye; Brown, Michael D; Ritchie, Scott A; Knight, Jon; Kay, Brian H
Journal Name Australian Journal of Entomology
Year Published 2002
Place of publication Australia
Publisher Blackwell Science Asia
Abstract Studies were conducted at sites in south-east Queensland, Australia, to investigate the effect of habitat modification for mosquito control on the distribution of eggshells of the salt marsh mosquito, Ochlerotatus vigilax (Skuse). Modifications were mainly runnelling, but an Open Marsh Water Management (OMWM) site and a grid-ditched site were also included. There were two separate experimental designs: one was data collected Before and After (BA) modification and the other was for other sites with a Treatment and Control (TC) experimental design. For the BA data, there were significant reductions in eggshells after modification. Eggshells were generally fewer after modification in areas which were close to unrestricted tidal flushing. A sandy substrate and vegetation changes which resulted in reduced Sporobolus virginicus or mixed Sporobolus and Sarcocornia quinqueflora also contributed to the effect. In the TC experiment, there was no effect of modification at the runnelled site, eggshells were fewer at the OMWM site, but there were more eggshells at the grid-ditched site. There was some general indication that recent oviposition activity was reduced in sites that had been modified, evidenced by a relatively small proportion of young (dark coloured) eggshells.
Peer Reviewed Yes
Published Yes
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Copyright Statement Copyright 2002 Blackwell Publishing. The definitive version is available at []
Volume 41
Issue Number 1
Page from 49
Page to 54
ISSN 1326-6756
Date Accessioned 2003-04-14
Language en_AU
Research Centre Griffith Centre for Coastal Management
Faculty Faculty of Environmental Sciences
Subject PRE2009-Environmental Sciences
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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