Chinese Journal of Entomology (1991) 11, 264-281
C.C. Chien, Y.I. Chu and H.C. Ku (1991)
Parasitic strategy, morphology and life history of Tamarixia radiata (Hymenoptera: Eulophidae)
Chinese Journal of Entomology 11 (3), 264-281
Abstract: The morphology, life history, and population parameters of the arrhenotokous Tamarixia radiata (Waterston) were studied at 25°C, 14:10 (L:D) photoperiod, and 100% RH. The species mated only once. The longevity and fecundity of the female were not affected by the frequency of mating. The female was capable of killing Diaphorina citri Kuwayama by parasitizing (80%) and host feeding (20%). The peak of emergence was between 5 a.m. and 10 a.m. while that of oviposition and host feeding was between 9 a.m. and 1 p.m. Although any instar nymph of D. citri was suitable prey for T. radiata, the wasp significantly preferred to lay eggs on the 5th-instar nymph, resulting in progeny with higher survival, fecundity, female ratio, longevity, and larger body size. The wasp could discriminate the parasitized hosts to avoid feeding on and superparasiting them. Its development period from egg to adult was 11.4 days. The duration of egg, larval, prepupal, and pupal stages averaged 1.9, 4.0, 0.6, and 4.9 days, respectively. When 40 psyllids were provided daily, the host-killing potential and actual host-killing capability for a wasp was 525 and 513 psyllids, respectively. The longevity of female and male wasp averaged 23.6 and 14.8 days, respectively. The female progeny ratio was 0.76. The ratio of host feeding and oviposition was 0.26. The intrinsic rate of increase, finite rate of increase, net reproductive rate, and mean generation time was 0.3175 day1, 1.37 day1, 285 female eggs/female, 17.8 days, respectively. T. radiata adaptive strategies of mating, host selection, oviposition, host feeding and reproduction are also discussed.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Ching-Chin Chien
Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution
Pest and/or beneficial records:
| Beneficial | Pest/Disease/Weed | Crop/Product | Country | Quarant.
|
|---|---|---|---|---|
| Diaphorina citri | Taiwan | |||
| Tamarixia radiata (parasitoid) | Diaphorina citri | Taiwan |
