age distribution of adult female screwworms (diptera: calliphoridae) captured on sentinel animals in the coastal lowlands of guatemala.the age structure of screwworm, cochliomyia hominivorax (coquerel), populations was studied in the guatemalan lowlands with the pteridine technique of age determination. flies (95% were 4-15 d old) were captured on sentinel animals. mean age was 7.5 d. the oldest fly captured was 21 d old. most flies visiting wounds were reproductively mature females. of these, about one-half oviposited once, one-third oviposited twice, and 1 in 10 completed three ovarian cycles (assuming a 3-d interval between ...19902212236
an antifungal compound from solanum nigrescens. 19947990490
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