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Comparison of mosquito (Diptera: Culicidae) fauna characteristics of forested wetlands in Sweden
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Population Biology.
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Evolution, Population Biology.
2001 (English)In: Annals of the Entomological Society of America, ISSN 0013-8746, E-ISSN 1938-2901, Vol. 94, no 4, 576-582 p.Article in journal (Refereed) Published
Abstract [en]

We studied mosquito faunas of four wetlands from northern to southern Sweden by trapping female mosquitoes in June, July, and August. A total of 52,298 individuals comprising 32 species in five genera were identified. The number of species increased from 10 and 12 in the two northern wetlands, to 16 in the central Sweden study area, to 24 in the wetland in southern Sweden. For a further characterization of mosquito fauna diversity, we organized all species recorded from Sweden into 14 functional groups based on biological and life history characteristics. The number of groups increased from three in the two northern study areas, to eight in central Sweden, and 13 in the southernmost study area. All functional groups present at one site were also present at the sites located farther south. Most successful species were univoltine, respiring from the water surface, laying their eggs on soil, overwintering in the egg stage, preferring forested or partly forested habitats, and having mammals as hosts for blood meals. The mosquito faunas of the two northern study areas were similar and lacked several of the functional groups occurring further south. The mosquito fauna of the study area in central Sweden included species feeding on birds and with overwintering larvae. In the southernmost study area, 13 out of 14 functional groups were found, indicating a large variety of habitats. Our results demonstrated a southward increase in the number of both mosquito species and functional groups in forested wetlands.

Place, publisher, year, edition, pages
2001. Vol. 94, no 4, 576-582 p.
Keyword [en]
mosquitoes, wetlands, diversity, functional groups
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:uu:diva-92387OAI: oai:DiVA.org:uu-92387DiVA: diva2:165441
Available from: 2004-11-19 Created: 2004-11-19 Last updated: 2017-12-14Bibliographically approved
In thesis
1. Mosquitoes as a Part of Wetland Biodiversity
Open this publication in new window or tab >>Mosquitoes as a Part of Wetland Biodiversity
2004 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Wetlands contain both aquatic and terrestrial environments which generates high biodiversity. However, they are commonly associated with mosquitoes (Diptera: Culicidae), and mosquitoes are usually regarded as negative by humans because they can cause nuisance and transmit diseases. This thesis aimed to clarify the association between mosquitoes and wetlands and to achieve a more balanced view of biodiversity in wetlands by including mosquito diversity.

Studies on adult mosquito diversity and assemblages were performed in 18 wetlands spread over Sweden. The Swedish mosquito species were organized in ten functional groups based on four life-history characteristics. This classification was used as an additional diversity measurement and as a tool for presentation of mosquito data.

Mosquito diversity showed several of the well-established diversity patterns such as a latitudinal gradient, a species-area relationship and a distribution-abundance relationship. In a landscape perspective, diversity of both mosquitoes and dytiscids (Coleoptera: Dytiscidae) were positively influenced by a high proportion of permanent water and a high amount of open areas, indicating co-varying diversity patterns.

Mosquito assemblages in the Nedre Dalälven region were mainly structured by the extent of flooded areas and wetland type (wet meadow, swamp and bog). In addition to the influence of the proportion of temporary wetlands at a local scale, the proportion of forest gained importance at larger spatial scales and in relation to dispersal distances of species. In southern Sweden, mosquito faunas differed between natural and constructed wetlands, partly reflecting differences in wetland size. In an experiment, different responses of two co-occurring mosquito species to rapid larval habitat desiccation indicate that weather conditions after a flood could influence mosquito assemblages.

The conclusions of this thesis provide suggestions on how to construct and position wetlands for increased insect diversity, and indicate that low abundance of major nuisance species might be crucial for acceptance of wetlands near human settlements.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2004. 63 p.
Series
Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1104-232X ; 1042
Keyword
Ecology, diversity patterns, species assemblages, functional groups, constructed wetlands, dytiscids, Ekologi
National Category
Ecology
Identifiers
urn:nbn:se:uu:diva-4670 (URN)91-554-6094-1 (ISBN)
Public defence
2004-12-10, Ekmansalen, EBC, Norbyvägen 14, Uppsala, 10:00 (English)
Opponent
Supervisors
Available from: 2004-11-19 Created: 2004-11-19 Last updated: 2009-03-31Bibliographically approved

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