Photoperiodic Control of Adult Diapause in the Bean Bug, Riptortus clavatus THUNBERG (Heteroptera : Coreidae) IV. : Food and Post-Diapause Development

Abstract

Effects of food on diapause development and post-diapause development were studied in Riptortus clavatus reared under controlled phoroperiodic conditions. Starvation did not affect the diapause development, although the post-diapause ovarian development was suppressed in starved individuals. The suppression of ovarian development was due to the deficiency of juvenile hormone, because a juvenile hormone analogue induced yolk deposition promptly even in starved individuals. It was concluded that food is a major factor in timing the onset of reproduction after adult diapause.