The effect of changes in moisture conditions on a community of haematophagous Diptera and ticks in a floodplain forest

Knoz, Jan; Vaňhara, Jaromír

doi:10.1016/b978-0-444-98756-3.50037-x

Developments in Agricultural and Managed Forest Ecology

1991

DOI: 10.1016/b978-0-444-98756-3.50037-x

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The effect of changes in moisture conditions on a community of haematophagous Diptera and ticks in a floodplain forest

Jan Knoz

Jaromír Vaňhara

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Cited by 2 publications

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A floodplain forest mosquito community after man‐made moisture changes (Culicidae, Diptera)

Vaňhara

1991

Regul. Rivers: Res. Mgmt.

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This paper summarizes data on the response of mosquitoes to changed water regime following extensive water management alterations on the southern Moravian Dyje and Morava rivers. Maximum groundwater level dropped by an average of 90 cm, previous regular floods were prevented, and the area covered by floodplain forests was significantly decreased due to the construction of three reservoirs.The original mosquito community of temporary water bodies (Aedes) is in retreat both quantitatively and, in places, qualitatively. Of the initial number of six species causing plagues, only Ae. vexans has remained (63.3 per cent), the rest occurring at percentages of only 0.1-4.1 per cent. After flood regulation, the breeding grounds of the species developing in temporary water bodies has filled only during periods of sufficiently high groundwater levels and sufficient saturation of soil with rainfall.A prospective group in this area includes mosquito species developing in permanent water bodies (Culex, Anopheles, Culiseta, etc.). This group is increasing in numbers and species richness. After the completion of three reservoirs, Anopheles spp. spread throughout the study area. They develop in the waters accompanying the reservoirs, especially in channels rich in vegetation, in which they attain densities of up to 39.9 larvae per 100 cm2 water surface. The drier environment, and drier and warmer climate prevailing in recent years have probably influenced the occurrence of southern species in the area, notably Culex martinii and Uranotaenia unguiculata.Long-term quantitative collections of mosquitoes enable first note to be made on the possible fluctuation mechanisms, previously obscured by the essential influence of floods on community development.

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A floodplain forest mosquito community after man‐made moisture changes (Culicidae, Diptera)

Vaňhara

1991

Regul. Rivers: Res. Mgmt.

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Seasonal Dynamics, Parity Rate, and Composition ofCulicoides(Diptera: Ceratopogonidae) Occurring in the Vicinity of Wild and Domestic Ruminants in the Czech Republic

et al. 2015

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In the light of the emergence of bluetongue and Schmallenberg viruses in northern and central Europe, an extensive entomological survey within the framework of a bluetongue control program was undertaken from 2008 to 2013 in the Czech Republic to investigate Culicoides biting midges (Diptera: Ceratopogonidae) collected in close proximity of domestic livestock and semiwild ruminants. Insects were sampled using CDC black-light suction traps placed overnight near ruminants in farms or in forest game preserves to provide data on Culicoides fauna collected near these two groups of hosts inhabiting different environments. From almost a half million biting midge specimens collected at 41 sampling sites, 34 species were identified including three species newly recorded for the Czech Republic: Culicoides (Oecacta) clastrieri Callot, Kremer & Deduit, Culicoides (Oecacta) odiatus Austen, and Culicoides (Pontoculicoides) saevus Kieffer. The Culicoides obsoletus species group, incriminated as a bluetongue virus vector, was predominant in both domestic livestock (91%) and semiwild game (52%). A relatively high proportion (around 30%) of C. obsoletus Meigen females with pigmented abdomen (= more likely parous) was observed from spring till autumn. In contrast, adult biting midges were found to be largely absent during at least three winter months, approximately December till March, which could be considered as the biting midge vector-free period.

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The effect of changes in moisture conditions on a community of haematophagous Diptera and ticks in a floodplain forest

Cited by 2 publications

References 3 publications

A floodplain forest mosquito community after man‐made moisture changes (Culicidae, Diptera)

A floodplain forest mosquito community after man‐made moisture changes (Culicidae, Diptera)

Seasonal Dynamics, Parity Rate, and Composition ofCulicoides(Diptera: Ceratopogonidae) Occurring in the Vicinity of Wild and Domestic Ruminants in the Czech Republic

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