نتایج جستجو برای: dung flies
تعداد نتایج: 18020 فیلتر نتایج به سال:
Fluctuating asymmetry (FA) is a widely employed measure of developmental stability. It has been found to increase with many stressors including parasite infection. Associations between parasites and FA may exist for several reasons in addition to parasites being the direct cause of increased FA. Developmentally stable individuals may have superior immune systems, and be less susceptible to para...
Sex and death: microevolutionary trade-offs between reproductive and immune investment in dung flies
Abstract Because predator-prey interactions in nature are multifarious, linking phenomenological predation rates to underlying behavioral or ecological mechanisms is challenging. Size- and sex-specific has been implicated as a major selective force keeping animals small, directing the evolution of body size sexual dimorphism. We experimentally assessed by 4 amphibian 3 arthropod species (bug, f...
background: dung beetles of coleoptera associated to undisturbed cattle droppings in pastures present great diver sity and abundance. dung beetles also play an important role for transmission of some helminthes to human and cat tle. this study was made to survey the biodiversity and abundance of these beetles in ardebil province, western iran. methods: according to the field study all beetles a...
The effects of insect larval diet on adult olfactory responses to host-plant or food volatiles are still debated. The induction of adult host preferences has been studied in insects with diverse ecologies, including parasitoids, flower-visitors and phytophagous species. We investigated this question for the first time in a coprophagous insect species. Larvae of the French scarab dung beetle Agr...
Introduction: Flies are able to mechanically transmit many pathogenic agents due to their close relationship with humans. Identification and species determination of flies for understanding of their current status and planning for their control, as well as considering the important role of flies in the ecosystem and their biological functions in biological studies, is essential. The purpose of ...
Cryptosporidium oocysts were inoculated into fresh dung (∼1.2×10(4) oocysts per gram wet weight) and fed to dung beetles to assess the effect of dung burial by the dung beetle Bubas bison on the distribution of the oocysts in small cores of soil in the laboratory. The experiment consisted of five replicates of each of two treatments; controls (dung but no dung beetles) and the experimental trea...
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