Preimaginal Development and Survival of Bemisia tabaci on Cotton and Cucumber

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Bemisia tabaci was collected in the Coachella and Imperial valleys of California and reared on cotton (‘Delta Pine 61’) and cucumber (‘Poinsett 76’) in temperature-controlled cabinets at 20.0, 25.5, 29.0, and 32.0∘C. Data were collected on preimaginal developmental period and mortality. Mean overall developmental periods varied from 38.2 d at 20∘C to 17.4 d at 32∘C. on cucumber and from 28.6 d at 20∘C to 17.7 d at 25SC on cotton. Development was slower at 20.0 and 25.5∘C on cucumber and slower at 29.0 and 32.0∘C on cotton. Immature survival was ≍50% on cotton at all temperatures, and on cucumber increased from 33 to 72% with increasing temperatures. Developmental periods and survival for each preimaginal stage also are presented.