Life history traits of castor whitefly, Trialeurodes ricini Misra (Hom., Aleyrodidae), on eight host plant species.
The life history traits of Trialeurodes ricini, on 8 host plant species were evaluated. Number of eggs during a 48 h period, immature survival, development time, adult size and sex ratio were examined to determine host plant suitability. Significant differences were found in oviposition rate among host plant species. Number of eggs was highest on aubergines, intermediate on potatoes, cotton and French bean (Phaseolus vulgaris), and lowest on melons, cucumbers and tomatoes. Survival on hosts ranked as follows: aubergine>cotton>pumpkin>French bean>potato. No individual survived to adult eclosion on melon, cucumber or tomato. For 4 of the 8 plant species tested, there was an association between ovipositional and survival rates. Host plant species had a significant effect on development time, adult size and sex ratio of T. ricini.