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[Autogenesis and cerebral neurosecretion in Aedes detritus (Haliday, 1833) (Diptera - Culicidae].

In anautogenous females of the Dipteran Culicidae Aedes detritus (Haliday, 1833), the neurosecretory products synthesized by the A cells of the pars intercerebralis are stored in the pericarya in absence of blood meal; on the contrary, in the autogenous females they are steadily released from emergency till the stages 3-4 of vitellogenesis; a slight storage occurs by the end of vitellogenesis. These facts suggest the important meaning of these cells in the regulation processes of vitellogenesis in Mosquitoes.

Aedes

Host feeding patterns of Connecticut mosquitoes (Diptera: Culicidae).

Blood-engorged Coquillettidia perturbans, Psorophora ferox, Culex, Culiseta, and Aedes mosquitoes were collected principally by sweep net from salt marsh and woodland habitats in Connecticut. Of the 570 mosquitoes tested, precipitin tests identified the origins of 517 blood meals and revealed distinct host feeding patterns. Aedes mosquitoes fed chiefly on mammals; A. abserratus, A. cantator, and A. vexans showed selectivity for cattle and (or) horses. A. cantator also obtained blood from avian hosts and, in some instances, showed mixed passerine-mammal blood meals. These findings increase the vector potential of this salt marsh mosquito for eastern equine encephalomyelitis virus. Feedings on deer by A. abserratus suggest potential involvement of this mosquito in the transmission of certain subtypes of California encephalitis. Culex-pipiens, C. restuans, Culiseta melanura, and Cs. morsitans dyari acquired blood almost exclusively from passeriform birds.

Aedes