Southwestern Entomologist (1997) 22, 331-336

K.R. Summy, S.M. Greenberg and J.A. Morales-Ramos (1997)
Patterns of host utilization by Catolaccus grandis, an exotic parasite of boll weevil: effects of host microhabitat
Southwestern Entomologist 22 (3), 331-336
Abstract: Research was conducted to investigate the effects of host microhabitat on the incidence of oviposition by Catolaccus grandis (Burks), an exotic parasite of boll weevil, Anthonomus grandis Boheman. Third-instar boll weevil larvae and pupae infesting cotton squares were shown to be highly susceptible to attack by C. grandis, regardless of location within the cotton habitat (i.e., within the canopy or on the soil surface following abscision). In contrast, the susceptibility of immature host stages infesting cotton bolls was shown to be largely predicated on the physical condition of the individual fruiting form. Third-instar boll weevil larvae and pupae infesting bolls characterized by separated carpel segments or other types of surface damage (which presumably provide access to the parasite's ovipositor) were readily parasitized, whereas contemporaries infesting fresh (undamaged) bolls appear to have been largely protected from attack by this parasite species.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Juan A. Morales-Ramos, Shoil M. Greenberg

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Anthonomus grandis
Catolaccus grandis (parasitoid)	Anthonomus grandis