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The venom apparatus of Vespa orientalis: morphology and cytology


, : The venom apparatus of Vespa orientalis: morphology and cytology. Toxicon 14(1): 65-68

The anatomy and histology of the venom apparatus of Vespa orientalis L. was investigated. There are two acid glands in each individual, each divided into a secretory part made up of two layers of cells containing large amounts of lipids and mucopolysaccharides, and a 'transporting' part through which the substances secreted are transported into the venom sac. The alkaline gland contains one layer of cells; muscle fibres are connected to these cells externally and probably play a role in the transport of the secreted substances into the stinging apparatus. The venom sac serves as a reservoir for the secretion of the acid gland and is made of a thick layer of muscle fibres.The toxicity of the different parts of the venom apparatus was studied both by in vivo and in vitro methods. Extracts of acid and alkaline glands and of venom sac were injected into bees and mice. All the extracts were lethal for the bees, all the extracts were toxic for the mice but the minimum dose of venom sac extract lethal for mice was 4500-7500 mu g. The different extracts applied to cultures of liver cells produced an accumulation of fat within the cells, which is considered to be a toxic effect.

US$19.90

PMID: 1258070

DOI: 10.1016/0041-0101(76)90121-5


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