Journal of Vector Ecology (2008) 33, 150-157

M.L. Schäfer, J.O. Lundström and E. Petersson (2008)
Comparison of mosquito (Diptera: Culicidae) populations by wetland type and year in the lower River Dalälven region, Central Sweden
Journal of Vector Ecology 33 (1), 150-157
Abstract: We studied adult mosquito assemblages in six wetlands, representing three types (wet meadow, alder swamp, and bog), in the lower part of the River Dalälven in Central Sweden during three consecutive years (2000-2002) and evaluated the influence of wetland type and year. Mosquito abundance differed significantly between years but not between wetland types. Mosquito species richness showed no significant variation between years or wetland types. Cluster analysis based on percentage of similarity resulted in three clusters, with high similarity between all wetlands in 2000. Ordination analysis showed that mosquito assemblages were mainly correlated with wetland type and water level increase in the previous month. Hydrological conditions varied between the years and between the wetland types, and our collections also included a year (2000) with extreme flood situations. The floodwater mosquito species Ochlerotatus sticticus was the predominant species with a strong influence on the whole study due to its long-range dispersal ability. The entire region suffered from enormous numbers of Oc. sticticus in 2000. The data from this study provided the basis for the initiation of a mosquito control project in the region.
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Database assignments for author(s): Jan O. Lundström

Research topic(s) for pests/diseases/weeds:
environment - cropping system/rotation
surveys/sampling/distribution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Culex pipiens		Sweden
	Aedes vexans		Sweden
	Culiseta morsitans		Sweden
	Culex torrentium		Sweden
	Aedes cantans		Sweden
	Aedes communis		Sweden
	Aedes punctor		Sweden
	Anopheles maculipennis		Sweden
	Anopheles claviger		Sweden
	Coquillettidia richiardii		Sweden
	Aedes sticticus		Sweden
	Aedes cinereus		Sweden
	Aedes detritus		Sweden
	Aedes annulipes		Sweden
	Aedes excrucians		Sweden
	Aedes pullatus		Sweden