Entomologia Experimentalis et Applicata (2010) 137, 211-219

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Touhidur Rahman, Mohammad Nor Mohd Roff and Idris Bin Abd Ghani (2010)
Within-field distribution of Aphis gossypii and aphidophagous lady beetles in chili, Capsicum annuum
Entomologia Experimentalis et Applicata 137 (3), 211-219
Abstract: Understanding the spatial distribution of insect pests and their natural enemies can be very important for a successful integrated pest management approach. In Malaysia, Aphis gossypii Glover (Hemiptera: Aphididae) is the only aphid species colonizing and responsible for significant crop losses in chili, Capsicum annuum L. (Solanaceae). Several species of aphidophagous lady beetles (Coleoptera: Coccinellidae) occur naturally, of which three species [Menochilus sexmaculatus (Fabricius), Coelophora inaequalis (Fabricius), and Coccinella transversalis (Fabricius)] predominate in chili ecosystems. In this study, we investigated the spatial distribution of A. gossypii and associated lady beetle predators during two growing seasons of C. annuum, using Spatial Analysis by Distance Indices (SADIE). Both aphid and lady beetle populations were spatially aggregated, the strength of aggregation being strongest mid-way through the cropping cycle. We concluded that the aggregated distribution of adult lady beetles is driven by the spatial distribution of A. gossypii.
(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): Touhidur Rahman

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
surveys/sampling/distribution
Research topic(s) for beneficials or antagonists:
surveys/distribution/isolation


Pest and/or beneficial records:

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


Aphis gossypii Green pepper/chilli (Capsicum) Malaysia
Coccinella transversalis (predator) Aphis gossypii Green pepper/chilli (Capsicum) Malaysia
Cheilomenes sexmaculata (predator) Aphis gossypii Green pepper/chilli (Capsicum) Malaysia
Coelophora inaequalis (predator) Aphis gossypii Green pepper/chilli (Capsicum) Malaysia