نتایج جستجو برای: dung flies
تعداد نتایج: 18020 فیلتر نتایج به سال:
Insecticide treatment of cattle is an important method of tsetse control. However, insecticides applied to cattle have been shown to contaminate dung. This has a significant impact on insects using the dung as a resource, e.g. dung beetles. This reduces the recycling of dung and has a negative impact on productivity of pasture. However, applications of insecticide restricted to only the legs an...
Dung beetles (Coleoptera: Scarabaeoidea) support numerous ecosystem functions in livestock-grazed pastures. Exposure to veterinary anthelmintic residues in livestock dung can have lethal and sublethal effects on dung beetles, and can reduce rates of dung removal, but the immediate and longer-term consequences for other dung beetle mediated functions have rarely been studied. We investigated the...
Dung beetles (Coleoptera: Scarabaeidae) play a major role in nutrient cycling, soil aeration, and the biological control of pests and parasites that breed in manure. Habitat fragmentation, pesticide usage, and conventional agricultural practices are threats to dung beetle diversity, and their conservation is of growing concern. Comparison of organic and conventional ranching practices is of gre...
To determine if dung from various species of native mammals are attractive to species of Scarabaeidae differentially in a seasonal evergreen forest in Thailand, we used pitfall traps baited with fresh dung of four species (barking deer, sambar deer, Asian elephant, pig-tailed macaque) and an unbaited control. The pitfalls were deployed in Khao Yai National Park for 24 hours in March 2010. All t...
Non point-source pollution of fresh waters by agricultural phosphorus (P) can accelerate eutrophication of surface waters and limit their use for drinking, recreation, and industry. An important pathway of agricultural P transport is surface runoff, to which unincorporated dung from grazing cattle can be a significant contributor. Computer models commonly used to identify agricultural areas wit...
Insecticide treatment of cattle is an important method of tsetse control. However, insecticides applied to cattle have been shown to contaminate dung. This has a significant impact on insects using the dung as a resource, e.g. dung beetles. This reduces the recycling of dung and has a negative impact on productivity of pasture. However, applications of insecticide restricted to only the legs an...
Previously only ten species of Hercostomus Loew were known to occur in Tibet, of which only two belong to the H. baishanzuensis group. Here the following six species of the H. baishanzuensis group are described as new to science: Hercostomus bisetus sp. nov., H. deltodontus sp. nov., H. flavus sp. nov., H. galonglaensis sp. nov., H. nuciformis sp. nov. and H. pailongensis sp. nov. A key to the ...
Background and purpose: Flies have a high diversity and are able to transmit many pathogens due to their adaptation and close relationship with humans. Therefore, this study was performed to identify the fauna of medically important flies in the city of Joybar in northern Iran. Materials and methods: This descriptive-analytical study was conducted twice a month in Juybar at selected sites, inc...
We used dung surveys to estimate population size and extracted an age structure from boli diameters for the elephants living in the Maputo Elephant Reserve. Our estimate was based on published defecation rates, dung decay rates, distance-sampling techniques and 1,672 dung piles encountered on 204 line-transects. The reserve had at least 311 (95% CI: 198–490) elephants at a density of 0.60 (95% ...
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