Identification of Blood Components which induce gorging of the Mosquito.

摘要: Abstract The peculiar stimulation of mosquitoes by host blood, which usually ensures gorging and subsequent dispatch the food to midgut, may be supposed either tactile or gustatory. Having examined various properties dietary blood for their effects upon feeding responses Culex pipiens var. pallens Coquillett, evidence has been obtained that stimulants are predominantly chemical, responsible substance substances must some components erythrocytes as well other living cells, rather than fluid part but it is neither haemoglobin nor any compounds heretofore suspected. stimulus, though exceedingly acceptable mosquito, differs qualitatively from sugars. NaCl similar inorganic chlorides in adequate concentrations also exhibit a slight degree blood-like stimulation. They obviously rejected at higher concentrations. Osmotic pressure no fundamental influence sugar feeding, can affect since hypotonic solutions haemolysed refused insect if they not sweetened with sugar. Guided such findings, was possible extract ox cells possessing action stimulus. Through ion-exchange chromatographic separation this identified adenylic acid. Comparison several nucleotides related suggests adenosine-5′-phosphates afford main stimulus promotes mosquito on meal. Acceptability discussed relation chemical structure.