Journal of Applied Entomology - Zeitschrift für angewandte Entomologie (2000) 124, 359-364

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F.S. Ramalho, R.S. Medeiros, W.P. Lemos, P.A. Wanderley, J.M. Dias and J.C. Zanuncio (2000)
Evaluation of Catolaccus grandis (Burks) (Hym., Pteromalidae) as a biological control agent against cotton boll weevil
Journal of Applied Entomology - Zeitschrift für angewandte Entomologie 124 (9-10), 359-364
Abstract: An evaluation of augmentative releases carried out at the Agreste site of the state of Paraiba, Brazil, provided significant insight into the ecology and potential impact of Catolaccus grandis (Burks) against the boll weevil, Anthonomus grandis Boheman in that cotton agroecosystem. The rate of increase in density of C. grandis was higher than the boll weevil. Catolaccus grandis showed ability to effectively search and reproduce within the release environment and revealed pronounced host and habitat preferences. Parasitism by C. grandis was largely confined to third instar weevil larvae, the majority of which (86.9%) occurred in abcised cotton squares. Catolaccus grandis inflicted significant mortality on third instar weevil larvae in the plot resulting in a significant level of suppression. The net effect was a higher boll weevil mortality in the release plot in comparison with the control. The use of augmentative releases of C. grandis has a very high potential for supplementing and enhancing available technology for suppressing boll weevil populations in the Agreste Paraiba.
(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): Francisco de Sousa Ramalho, José Cola Zanuncio

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
inundative/inoculative release
population dynamics/epizootiology

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Anthonomus grandis Brazil (NE)
Catolaccus grandis (parasitoid) Anthonomus grandis Cotton (Gossypium) Brazil (NE)