CHANGES IN COMPOSITION OF LIPIDS AND FATTY ACIDS IN ADULT CULEX TARSALIS AND ANOPHELES FREEBORNI DURING OVERWINTERING PERIOD

Anopheles freeborni adults are heaviest and contain their highest lipid content at the initial part of the overwintering period. Their lipid and fatty acid content decline steadily during the overwintering months. Culex tarsalis adults have the same approximate amount of lipids and fatty acids at the beginning as at the end of the overwintering period but have about twice that amount at the mid-part of the same period. Thus, C. tarsalis reaches its maximum lipid content much later than does A. freeborni. Both species utilize their major fatty acid (C 16 : 1) to a much larger extent than other fatty acids. © 1969.