Biocontrol Science and Technology (2002) 12, 493-506
Mohamed N. Sallam, William A. Overholt and Eunice Kairu (2002)
Intraspecific and interspecific competition between Cotesia flavipes and Cotesia sesamiae (Hymenoptera: Braconidae), gregarious larval endoparasitoids of lepidopteran stemborers
Biocontrol Science and Technology 12 (4), 493-506
Abstract: Super and multiple parasitism of Chilo partellus (Lepidoptera: Pyralidae) and Sesamia calamistis (Lepidoptera: Noctuidae) by Cotesia flavipes Cameron and Cotesia sesamiae (Cameron) (Hymenoptera: Braconidae) were investigated in the laboratory. Progeny production of Co. flavipes increased as a result of increasing the number of ovipositions, from one to three per one Ch. partellus host larva, then decreased as a result of four and five ovipositions per larva. Cocoon weight, sex ratio and emergence of the parasitoid progeny were not affected by superparasitism. Low progeny production of Co. sesamiae and poor survival of Ch. partellus host larvae were found as a result of superparasitism. When S. calamistis was the host, the duration of immature stages of Co. flavipes, parasitoid emergence, progeny production and sex ratio were not affected by superparasitism, but cocoon weight, adult longevity and the potential fecundity of adult females decreased. Superparasitism of S. calamistis by Co. sesamiae did not affect emergence, longevity or sex ratio of adult progeny of the parasitoid, but prolonged immature development, lowered cocoon weight and decreased potential fecundity of adult female progeny. Co. flavipes out-competed Co. sesamiae when Ch. partellus was parasitized by both species. The potential for local displacement of Co. sesamiae by Co. flavipes in areas dominated by Ch. partellus in East Africa is discussed.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): William A. Overholt
Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
environment/habitat manipulation
population dynamics/epizootiology
Pest and/or beneficial records:
| Beneficial | Pest/Disease/Weed | Crop/Product | Country | Quarant.
|
|---|---|---|---|---|
| Chilo partellus | ||||
| Sesamia calamistis | ||||
| Cotesia flavipes (parasitoid) | Chilo partellus | |||
| Cotesia flavipes (parasitoid) | Sesamia calamistis | |||
| Cotesia sesamiae (parasitoid) | Chilo partellus | |||
| Cotesia sesamiae (parasitoid) | Sesamia calamistis |
