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1 June 2008 Tires as larval habitats for mosquitoes (Diptera: Culicidae) in southern Manitoba, Canada
T. J. Scott McMahon, Terry D. Galloway, Robert A. Anderson
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In 2003, a survey at waste management grounds and tire dealerships was conducted to determine the species composition of mosquitoes in tires in southern Manitoba, Canada. Over 25% of the 1,142 tires sampled contained a total of 32,474 mosquito larvae and pupae. Culex restuans made up at least 95% of the larvae collected for each month of the summer. Culiseta inornata and Culex tarsalis reached their greatest numbers in July and August, respectively, though they were never abundant. Ochlerotatus triseriatus was also found but never reached more than 1% of the total larvae collected in any given month. Mosquito prevalence was more than three times greater in August (36.1%) than in June (11.7%). Orientation affected prevalence of mosquitoes in tires: 31.4% of vertical tires (tires standing on their treads) contained mosquitoes, whereas mosquitoes were found in only 18.9% of horizontal tires (tires parallel to the ground). Tires in the eastern region of Manitoba contained mosquitoes more often (61.7%), irrespective of date, than Winnipeg (25.9%), the central region (29.1%), or the western region (19.8%). Mosquito prevalence was similar across three size categories of tires, car tires (18.8%), truck tires (19.8%), and semi-trailer tires (26.7%), though tractor tires (47.8%) contained significantly more mosquitoes than tires in the other categories.

T. J. Scott McMahon, Terry D. Galloway, and Robert A. Anderson "Tires as larval habitats for mosquitoes (Diptera: Culicidae) in southern Manitoba, Canada," Journal of Vector Ecology 33(1), 198-204, (1 June 2008).[198:TALHFM]2.0.CO;2
Received: 29 August 2007; Accepted: 15 March 2008; Published: 1 June 2008

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