نتایج جستجو برای: dung equation

تعداد نتایج: 232658  

Journal: :Environmental entomology 2010
Sandra Amézquita Mario E Favila

Many studies have evaluated the effect of forest fragmentation on dung beetle assemblage structure. However, few have analyzed how forest fragmentation affects the processes carried out by these insects in tropical forests where their food sources consist mainly of dung produced by native herbivore mammals. With the conversion of forests to pastures, cattle dung has become an exotic alternative...

Journal: :journal of arthropod-borne diseases 0
g mowlavi department of medical parasitology and mycology, school of public health and institute of public health research, tehran university of medical sciences, iran e mikaeili department of biology, faculty of science, mohaghegh ardebil university, ardebil, iran i mobedi department of medical parasitology and mycology, school of public health and institute of public health research, tehran university of medical sciences, iran eb kia department of medical parasitology and mycology, school of public health and institute of public health research, tehran university of medical sciences, iran l masoomi department of biology, faculty of science, mohaghegh ardebil university, ardebil, iran h vatandoost department of medical entomology and vector control, school of public health and institute of public health research, tehran university of medical sciences, iran

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...

Journal: :The Journal of experimental biology 2010
Laurent Dormont Pierre Jay-Robert Jean-Marie Bessière Sylvie Rapior Jean-Pierre Lumaret

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...

Journal: :Experimental parasitology 2011
Una Ryan Rongchang Yang Cameron Gordon Bernard Doube

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...

2018
Bryony Sands Neludo Mgidiswa Casper Nyamukondiwa Richard Wall

Pyrethroid insecticides are widely used to control ectoparasites of livestock, particularly ticks and biting flies. Their use in African livestock systems is increasing, driven by the need to increase productivity and local food security. However, insecticide residues present in the dung after treatment are toxic to dung-inhabiting insects. In a semiarid agricultural habitat in Botswana, dung b...

2004
Philippe Besnard Sylvie Doutre

We consider Dung’s argumentation framework, in which an argument system consists of a set of arguments and a binary relation between arguments representing the notion of a conflict. The semantics given by Dung define (with respect to each argument system) acceptable sets of arguments called extensions. For his so-called stable semantics, Dung also gives an alternative definition in terms of an ...

Journal: :Proceedings. Biological sciences 2016
Tobin J Hammer Noah Fierer Bess Hardwick Asko Simojoki Eleanor Slade Juhani Taponen Heidi Viljanen Tomas Roslin

Antibiotics are routinely used to improve livestock health and growth. However, this practice may have unintended environmental impacts mediated by interactions among the wide range of micro- and macroorganisms found in agroecosystems. For example, antibiotics may alter microbial emissions of greenhouse gases by affecting livestock gut microbiota. Furthermore, antibiotics may affect the microbi...

K Ashrafi, N Parvin, N Shahinfard, Z Keivani Hafshejani,

Background: Encounter with drug resistance and replacment natural treatment is essential. From olden of Iran and specially Chaharmahal and bakhtiari Province medicinal smokes such as donkey dung & Peganum harmala seed used for treatment of many diseases like Infectious diseases. Regarded to lake of scientific research about antimicrobial effects of this smoke this study was done with aim of com...

Journal: :Veterinary research 2007
Jean-Pierre Lumaret Michel Alvinerie Hella Hempel Hans-Joachim Schallnass Daniel Claret Jörg Römbke

According to European Union recommendations, a test method has been developed to evaluate the effects of veterinary pharmaceuticals on dung feeding insects. This test method was evaluated with the dung beetle Aphodius constans by using fecal residues of ivermectin after a pour-on administration. Dung of different age (and thus containing different concentrations of ivermectin) as well as mixtur...

2017

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...

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