• Proceedings of the PSK Conference
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• 2001.10a
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• pp.145.2-145.2
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• 2001

• Journal of Sericultural and Entomological Science
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• v.28 no.1
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• pp.54-60
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• 1986

Silkworms have been found cross infected with other microsporidia of insects in mulberry trees, forest and fruit gardens. Even the unidentified microsporidian species were not seriously pathogenic to silkworms, the silkworm egg producers lose their profit because of the elimination of eggs laid from moths which are infected with any kind of microsporidian species. Recently, the microsporidian cross infection to silkworm is in tendency of increase and the authors have investigated the field insects to examine the microsporidia. The number of species of insects infected with microsporidia was 10 and they were Boettcherisca peregrina (Robineau-Dewvoidy), Apis melifera linnaeus, Artogenia rapae Linnaeus, Tipula aino Alexander, Altica cacrulescens (Baly), Anomela daimiana Harold, Eilema griseola (Jubner), Rbalbistylun speciosum Uller, Anisodactylus signatus illiger, Oulema oryzae (Kuwayama). From the Boettcherisca peregrina (Rogineau-Desvoidy), three different species of micrsporidia were isolated and the microsporidia isolated from Boettcherisca peregrina (Robineau-Desvoidy), Apis melifera Linnaeus, Artogenia rapae Linnaeus donot have infectivity to silkworm larvae, Bombyx mori L.

• International Journal of Industrial Entomology and Biomaterials
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• v.14 no.2
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• pp.137-142
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• 2007

The antibacterial activity of Korean honey bee venom (KBV) was examined against seven major bacterial mastitis pathogens, Enterococcus faecium, Escherichia coli, Methicillin resistant Staphylococcus aureus (MRSA), Staphylococcus aureus, Streptococcus intermedius, Streptococcus oralis and Streptococcus uberis isolated from infected mammary quarters of cows. Seven bacterial mastitis pathogens were studied for antibacterial activity of the KBV by disc diffusion assay, minimal inhibitory concentrations (MIC) and bacterial count in milk samples. The KBV showed activity against Ent. faecium, E. coli, MRSA, Staph. aureus, Strep. intermedius. The order of susceptibility of the bacteria against the KBV was Staph. aureus>MRSA>E. coli>Strep. intermedius>Ent. faecium>Strep. oralis>Strep. uberis. The MIC against Staph. aureus, MRSA and E. coli were stronger effect as compared with standard drug. The effect of the KBV ($100{\mu}g\;ml^{-1}$) on the viability of Ent. faecium, E. coli, MRSA, Staph. aureus, Strep. intermedius, Strep. oralis and Strep. uberis in milk differed significantly with each other within 12 h incubation period. The results indicate that KBV has significant antibacterial effects against major bacterial mastitis bacteria, Ent. faecium, E.coli, MRSA, Staph. aureus, Strep. intermedius. Results of the study indicate the potential use of KBV as alternative to antibiotic therapy. Further investigations are needed though to confirm its efficacy and its effects on the animals.