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 ?
Previous research has shown that chlorothalonil is linked to a fungal parasite called Nosema bombi that affects bumblebees.
Other threats to bee colonies include American foulbrood (which attacks bee larvae), nosema (which invades bees' intestinal tracts), and chalkbrood (which infests bees' guts, causing them to starve).
raptor colony developed Nosema disease and was no longer suitable for use in bioaasays, so another colony was used that had been collected 1 yr earlier.
Add in a new parasitic disease called Nosema apis, with neither symptoms nor a cure, and finally, the one that surprised almost everybody, there simply wasn't enough good food readily available for every bee in the bunch.
Acetic acid is proven to kill nosema parasites, chalk brood spores, wax worms and other problems that have plagued beekeepers.
More than twice as many Nosema spores in supplement-fed colonies than in those that foraged rapini pollen.
Persistence of Beauveria bassiana, Nomuraea rileyi, and Nosema necatrix on soybean foliage.
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 microsporidian Anncaliia algerae, former genera Nosema and Brachiola, is an emerging human pathogen that primarily infects insects (2-7).
La nosemosis es una enfermedad que afecta las funciones digestivas de las abejas meliferas (Apis mellifera) causada por los microsporidios Nosema apis y Nosema ceranae (Fries, 2010).