Development and Fecundity of Deraeocoris nebulosus (Heteroptera: Miridae) on Bemisia argentifolii (Homoptera: Aleyrodidae)
Abstract
The developmental and reproductive biology of the native predaceous mirid Deraeocoris nebulosus was studied in the laboratory using immatures of the whitefly Bemisia argentifolii as prey. Nymphs were kept individually in ventilated Petri dishes and provided with a constant supply of prey colonized on excised sweet potato leaves rooted in hydroponic solution and kept at 27C. Females were kept similarly and daily egg production was recorded. There were five nymphal instars. Mean development from first instar to adult was 13.3 d; there were no significant differences in development rate between the sexes. After a 3-d preoviposition period, females produced about 10-14 eggs per day for nearly 20 days before oviposition rate declined with age. Females lived an average of 32.8 d (range 3-58 d), and mean fecundity was 242.3 eggs per female (range 0-392).Downloads
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