Nosema


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Nosema

 

a genus of endocellular parasitic protozoans of the order Myxosporidia. There are more than 90 species of Nosema—according to some sources, about 120 species. The Nosema are animal parasites that attack either certain tissues and organs or the entire body of the host. Some species are economically harmful, infesting silkworms, fish, bees, and commercially valuable invertebrates. Other species, which cause epizootics among crop pests, can be used for the biological control of economically harmful organisms. A typical representative of the genus is Nosema bombycis, a parasite of the Asiatic silkworm; its spores, which are about 8 microns long, are structurally complex.

REFERENCE

Weizer, J. Mikrobiologicheskie metody bor’by s vrednymi nasekomymi. Moscow, 1972. (Translated from Czech.)
References in periodicals archive ?
Hymenoptera: Apidae), nurse-aged bees had an elevated JH titer that peaked at 8 d of age after infection with Nosema ceranae Fries, Feng, Feng, da Silva, Slemenda & Pieniazek (Dissociodihaplophasida: Nosematidae) (Goblirsch et al.
Group A assays include testing honey bee samples for varroa mite and Nosema spp.
Of course, beekeepers are experiencing many threats to their bees besides pesticides - varoa mites, nosema ceranae viruses, lack of nutrition, loss of foraging areas and more.
Only one of the control colonies was lost -- thousands of dead bees were found inside the hive -- with what appeared to be symptoms of a common intestinal parasite called Nosema ceranae.
The genes of organisms such as Varroa Destructor mite, Nosema Cerenae fungus, and bee viruses including Sackbrood, Israeli, and Kashmir strains, were each independently found to have increased Replikin Counts, Beetoxingene Counts, at p<0.
The microsporidian Anncaliia algerae, former genera Nosema and Brachiola, is an emerging human pathogen that primarily infects insects (2-7).
Department of Agriculture's lead bee researcher, Jeff Pettis, published a study revealing that exposure to imidacloprid, a popular neonicotinoid, greatly increased bees' vulnerability to infection by nosema, a fungal parasite.
There are all kinds of diseases--foulbrood, nosema, etc.
A MOLECULAR ASSAY FOR THE PRESENCE OF THE NOSEMA PARASITE IN ALABAMA HONEYBEES.
Dawid [19] who opined that few Apis diseases are of importance in Africa listed Nosema and European foul brood disease while American foul brood and diseases caused by mites were unknown.
Varroa can transmit viruses and exacerbates infection by the microsporidian fungus Nosema which damages the honeybee gut.
At the moment they have multiple factors to contend with including Colony Collapse Disorder (CCD),Varroa and Acarive mites, Nosema fungus, Hive beetle (from the USA in 1998), wax moths and 10 different types of viruses, all of which affect the life span and cycle of the bee.