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

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.

Bibliographic Details

Main Authors:	Adom, M., Wilson, D. D., Fening, K.O., Bruce, A.Y., Adofo, K.
Format:	Article biblioteca
Language:	English
Published:	Kassel University Press 2018
Subjects:	AGRICULTURAL SCIENCES AND BIOTECHNOLOGY, SWEET POTATOES, VARIETIES, HOST PLANT RESISTANCE, PEST INSECTS,
Online Access:	http://nbn-resolving.de/urn:nbn:de:hebis:34-2018010454142 https://hdl.handle.net/10883/19949
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