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Bionomics of the sweet potato weevil, Cylas puncticollis (Coleoptera: Brentidae) on four different sweet potato varieties in sub-Saharan Africa

Author: Adom, M.
Author: Wilson, D. D.
Author: Fening, K.O.
Author: Bruce, A.Y.
Author: Adofo, K.
Year: 2018
ISSN: ISSN: 1612-9830
ISSN: ESSN: 2363-6033
dc.identifier.other: http://nbn-resolving.de/urn:nbn:de:hebis:34-2018010454142
URI: https://hdl.handle.net/10883/19949
Abstract: Sweet potato (Ipomoea batatas (L.) Lam.) is an important staple food crop in sub-Saharan Africa. A limiting production factor is infestation by the sweet potato weevil Cylas puncticollis (Boheman) (Coleoptera: Brentidae). The use of host plant resistance is an essential component of Integrated Pest Management (IPM). Therefore, the bionomic parameters of C. puncticollis were studied under laboratory conditions (30±1 °C and 75±5 % RH) on four sweet potato varieties commonly grown in Ghana (Apumoden, Ligri, Bohye, and Okumkom) to determine their susceptibility to the pest. There were significant varietal differences between some of the parameters. Egg to adult development time was highest on Okumkom while larval survival, emergence rate, intrinsic rate of increase, and the net reproductive rate were lowest on Bohye. The results of this study indicate that Bohye was the least susceptible variety compared to the other varieties tested and can be used in host plant resistance as part of an IPM programme against C. puncticollis in Ghana.
Format: PDF
Language: English
Publisher: Kassel University Press
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Type: Article
Place of Publication: Kassel
Pages: 55-63
Issue: 1
Volume: 119
Agrovoc: SWEET POTATOES
Agrovoc: VARIETIES
Agrovoc: HOST PLANT RESISTANCE
Agrovoc: PEST INSECTS
Journal: Journal of Agriculture and Rural Development in the Tropics and Subtropics


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  • Maize
    Maize breeding, phytopathology, entomology, physiology, quality, and biotech

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