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Balanced amino acid composition essential for infusion-induced egg development in the mosquito (Culex pipiens pallens)

, : Balanced amino acid composition essential for infusion-induced egg development in the mosquito (Culex pipiens pallens). Journal of Insect Physiology 39(7): 615-621

Amino acid mixtures, in which one or more amino acids were omitted from a basal mixture of 17 amino acids, were infused into the hemocoels of female Culex pipiens pallens mosquitoes. The resulting oogenesis was compared with previous studies of oogenesis induced by the basal mixture to evaluate the oogenic stimulatory effect of individual amino acids. Infusion of solutions deficient in isoleucine, leucine, lysine, phenylalanine, threonine, tryptophan or valine, which are known to be absolutely essential for producing mature eggs, failed even to initiate oogenesis. Removal of arginine (also absolutely essential for egg production), cysteine, histidine or methionine from the basal mixture resulted in decreased activation of oogenesis. Single elimination of other amino acids (alanine, glycine, proline and serine) resulted in high percentages of oogenesis and egg maturation, comparable to the levels produced by basal mixture infusion. The combination of asparagine and glutamine, which were reported to increase in the hemolymph of blood-fed females, can be substituted for asparagine and glutamate in the basal mixture to give a high level of oogenesis. On the other hand, infusion of a mixture comprised of the eight amino acids absolutely essential for egg production showed only a slight stimulation of oogenesis initiation. Single amino acid infusion of isoleucine or threonine also failed to stimulate mosquito oogenesis. Thus, we have concluded that initiation of mosquito oogenesis requires an appropriate balance in increased hemolymph amino acids rather than just one or a few special trigger amino acids.

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Accession: 002308082

DOI: 10.1016/0022-1910(93)90044-r

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Kellaway, R.G., 1989: The Hobart typhoid epidemic of 1887-88. Typhoid fever records for Hobart during the nineteenth century are examined and the summer of 1887/88 identified as the second year of a 5-year epidemic cycle. Three factors are used to explain the change from endemic to epidemic typhoid in the 18...

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Vaucher, C., 1986: Helminth parasites from Paraguay XIII: Polystoma diptychi n.sp. (Monogenea: Polystomatidae), parasite of Bufo diptychus: Cope (Amphibia: Bufonidae). P. diptychi n.sp. is described from one specimen found in the urinary bladder of B. diptychus from Conception Province, Paraguay. It differs from the 7 other species of Polystoma found in amphibians in Latin America in the shape (the guard and han...

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