نتایج جستجو برای: chironomids
تعداد نتایج: 292 فیلتر نتایج به سال:
Chironomids are one of the most biodiverse and abundant members freshwater ecosystems. They a food source for many organisms, including fish water mites. The accurate identification chironomids is essential applications in ecological research, determining which chironomid species present diets diverse predators. Larval adult from habitats, lakes, rivers, inland gardens, coastal vegetation, near...
Massive mosquito nuisance problems, caused by the flood-water mosquito Aedes sticticus, occur after floods in the flood plains of the River Dalälven, central Sweden. Since 2002, the biological mosquito larvicide Bacillus thuringiensis var. israelensis (Bti) has been used to control these mosquitoes. Here, we report results from the first six years of monitoring Chironomidae, the most susceptibl...
Characteristics of qualitative and quantitative composition benthos organisms on littoral spring spawning grounds Kurile Lake was given for the first time in 1974. Grounds typically consist intermiting plots pebble or gravel (clean covered by biocrust) with permanent sand component, sometime silty. The silt component rivers Srednaya Kirushutk is more impressive comparing to lake grounds. Chiron...
Accurate knowledge of the functional response of predators to prey density is essential for understanding food web dynamics, to parameterize mechanistic models of animal responses to environmental change, and for designing appropriate conservation measures. Greater flamingos (Phoenicopterus roseus), a flagship species of Mediterranean wetlands, primarily feed on Artemias (Artemia spp.) in comme...
Massive mosquito nuisance problems, caused by the flood-water mosquito Aedes sticticus, occur after floods in the flood plains of the River Dalälven, central Sweden. Since 2002, the biological mosquito larvicide Bacillus thuringiensis var. israelensis (Bti) has been used to control these mosquitoes. Here, we report results from the first six years of monitoring Chironomidae, the most susceptibl...
The ability of the non-biting midge Chironomus riparius to survive and reproduce in metal polluted lowland rivers facilitates the opportunity to study micro-evolutionary processes in situ. However, due to larval drift, adapted midge populations are subject to regular immigration of non-adapted specimens from clean upstream river reaches. To examine the influence of non-adapted genes in adapted ...
We investigated the influence of lake trophic status on accumulation of polychlorinated biphenyls (PCBs) in littoral and profundal invertebrates from 19 lakes in southern Sweden. The PCB concentration in profundal chironomids (Chironomus sp.) was negatively correlated with lake trophy but the concentration in littoral crayfish (Pacifasticus leniusculus) was unrelated to shifting nutrient regime...
Introduction: Chironomidae (Diptera) is the most widespread and abundant aquatic insect family in freshwater ecosystems. Chironomids are considered good indicators of water quality but seldom identified at genus level broad spatial scale studies. Objective: To identify environmental conditions associated with chironomids an altitudinal gradient. Methods: We compared ecoregions, river types, sea...
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