Preimaginal Development and Survival of Bemisia tabaci on Cotton and Cucumber

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.