Nosema

Nosema

      genus of parasitic spore-forming protozoans, of the order Microsporida, found in host cells where it undergoes repeated asexual divisions followed by spore formation.

      The species N. bombycis, which causes the epidemic disease pébrine in silkworms (silkworm moth), attacks all tissues and all developmental stages from embryo to adult. In advanced infections, small brown spots cover the body of the silkworm. Diseased larvae, which either are unable to spin cocoons or else spin them loosely, die without pupating. Louis Pasteur (Pasteur, Louis) identified the spores (“corpuscles”) of Nosema as the disease agent in 1865 and suggested control by destruction of infected silkworm colonies and improved sanitation.

      Another species, N. apis, attacks the gut epithelium of honeybees (honeybee) (especially workers) and causes nosema disease, a serious form of dysentery in animals.

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  • Nosema — Scientific classification Kingdom: Fungi Division: Microsporidia Class: Dihaplophasea …   Wikipedia

  • nosema — noséma ž DEFINICIJA pat. bolest odraslih pčela koju izaziva parazit Nosema apis dolazeći s hranom u crijevni sustav pčele ETIMOLOGIJA nlat. nosema, uzročnik bolesti ≃ grč. nósēma: bolest …   Hrvatski jezični portal

  • Nosema —   [zu griechisch nósos »Krankheit«], Gattung der Microsporidia, deren Arten besonders in Zellen und Geweben von Insekten schmarotzen. Nosema apis verursacht besonders im Frühjahr die Darm oder Nosemaseuche der Bienen; Nosema bombycis ist der… …   Universal-Lexikon

  • nosemă — nosémă s. f., g. d. art. nosémei; pl. noséme Trimis de siveco, 22.06.2005. Sursa: Dicţionar ortografic  NOSÉMĂ s.f. 1. (bot.) Ciupercă saprofită parazită, care trăieşte în tubul digestiv al viermilor de mătase. 2. Nosemoză. [< fr. nosema, cf …   Dicționar Român

  • nosema — NOSÉMA s. f. ciupercă saprofită parazită, în tubul digestiv al viermilor de mătase. (< fr. nosema) Trimis de raduborza, 15.09.2007. Sursa: MDN …   Dicționar Român

  • Nosema — Die Nosemose (auch Nosemosis, Nosematose, Nosema, Frühjahrsschwindsucht, Darmseuche) ist eine durch die Jochpilzarten Nosema apis oder Nosema ceranae verursachte Erkrankung bei Honigbienen. Die Nosemose ist die häufigste Krankheit bei erwachsenen …   Deutsch Wikipedia

  • Nosema — Nosema …   Wikipédia en Français

  • nosema — no·sè·ma s.m. TS zool. protozoo del genere Nosema, parassita di insetti | con iniz. maiusc., genere della classe dei Microsporidi, cui appartengono il Nosema apis e il Nosema bombycis {{line}} {{/line}} DATA: 1895. ETIMO: dal lat. scient. Nosēma …   Dizionario italiano

  • Nosema — No|se|ma die; , ...men <aus gleichbed. nlat. nosema, dies aus gr. nósēma »Krankheit«> ein Sporentierchen, Erreger der Nosemaseuche …   Das große Fremdwörterbuch

  • nosema — [nəʊ si:mə] noun a spore forming parasitic protozoan that causes disease in honeybees. [Genus Nosema.] Origin mod. L., from Gk nosēma disease …   English new terms dictionary

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