نتایج جستجو برای: nosema apis
تعداد نتایج: 10453 فیلتر نتایج به سال:
Honey bees (Apis mellifera) play a critical role in global food production as pollinators of numerous crops. Recently, honey bee populations in the United States, Canada, and Europe have suffered an unexplained increase in annual losses due to a phenomenon known as Colony Collapse Disorder (CCD). Epidemiological analysis of CCD is confounded by a relative dearth of bee pathogen field studies. T...
In Italy a nation-wide monitoring network was established in 2009 in response to significant honey bee colony mortality reported during 2008. The network comprised of approximately 100 apiaries located across Italy. Colonies were sampled four times per year, in order to assess the health status and to collect samples for pathogen, chemical and pollen analyses. The prevalence of Nosema ceranae r...
the microsporidium nosema apis is a protozoan parasite specific for the epithelial cells of the ventricles of adult bees. nosemosis occurs throughout the world. between february and may 2002-2003, samples were randomly collected twice from 20 apiaries in urmia region north-west of iran. during this survey total of 487 hives were examined for infection with n. apis. in the first stage of study (...
We evaluated the performance of six named types of package honey bees, Apis mellifera L (Hymenoptera: Apidae), from four commercial producers. We examined the effects of levels of the parasitic mite Varroa destructor Anderson & Trueman, the endoparasitic mite Acarapis woodi (Rennie), the gut parasite Nosema (species not determined) in samples from bees in 48 packages, and levels of adult drones...
Varroa mite is the major threat to western honey bee, Apis mellifera, and cause of significant economic losses in apiculture industry. destructor feeds on brood adult bees being responsible for vectoring virus infections other diseases. This study analyses role associated pathogens, such as viruses or fungus Nosema ceranae, their relationships regarding viability bee colony. It has been carried...
Honey-bee colony losses are an increasing problem in Western countries. There are many different causes, including infections due to various pathogens. Molecular biology techniques have been developed to reliably detect and identify honey-bee pathogens. The most sensitive, specific and reliable is the quantitative real-time polymerase chain reaction (qPCR) methodology. This review of the litera...
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