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Cotesia Okamotoi
''Cotesia'' is a genus of braconid wasps first described by Peter Cameron in 1891. Some species parasitize caterpillars of species considered pests, and are used as biocontrol agents. '' Cotesia congregata'' parasitizes the tomato and the tobacco hornworms. '' C. glomerata'' and '' C. rubecula'' feed on the cabbage white and other white butterfly caterpillars. '' C. gonopterygis'' and '' C. risilis'' are host-specific and parasitize the common brimstone.Lozan, Aurel; Spitzer, Karel; Jaroš, Josef (2012-06-01)"Isolated peat bog habitats and their food connections: parasitoids (Hymenoptera: Ichneumonoidea) and their lepidopteran hosts" ''Journal of Insect Conservation''. 16 (3): 391–397. ISSNbr>1366-638X doibr>10.1007/s10841-011-9425-4 The wasp '' C. melanoscelus'' parasitizes the caterpillar of the spongy moth. It, and the spongy moth, are native to Europe. The spongy moth is an invasive species in North America, and ''C. melanoscelus'' has been imported as a biocontrol o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cotesia Congregata
''Cotesia congregata'' is a parasitoid wasp of the genus ''Cotesia''. The genus is particularly noted for its use of polydnaviruses. Parasitoids are distinct from true parasites in that a parasitoid will ultimately kill its host or otherwise sterilize it. Life cycle Adult wasps lay their eggs in tobacco hornworm (''Manduca sexta'') larvae in their 2nd or 3rd instar (each instar is a stage between moltings, i.e. the second instar is the life stage after the first molt and before the second molting) and at the same time injects symbiotic viruses into the hemocoel of the host along with some venom. The viruses knock down the internal defensive responses of the hornworm. The eggs hatch in the host hemocoel within two to three days and simultaneously release special cells from the egg's serosa. These special cells, called teratocytes, grow to become giant cells visible to the naked eye. The teratocytes secrete hormones which work in tandem with the virus and the wasp venom to arrest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
