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close this section of the library Fatiaki, Fuatino Aquinas Afato


View the PDF document Abundance, within-vine distribution and oviposition site preferences of Euscepes batatae (waterhouse) (coleoptera: curculionidae) in sweet potato cultivars in Samoa
Author:Fatiaki, Fuatino Aquinas Afato
Institution: The University of the South Pacific
Award: M.Agric.
Subject: Sweet potatoes | Diseases and pests | Samoa, Curculionidae | Samoa, Cylas formicarius | Samoa
Date: 2017
Call No.: SB 608 .S98 F38 2017
BRN: 1352864
Copyright:10-20% of this thesis may be copied without the authors written permission

Abstract: The West Indian sweet potato weevil, Euscepes batatae (Waterhouse) (Coleoptera: Curculionidae), is an important pest of sweet potato found in Samoa. This study was carried out in two separate parts; firstly, to assess the abundance and distribution of Euscepes batatae in sweet potato farm localities and secondly, to identify the withinvine distribution, oviposition sites and feeding preferences of the pest in sweet potato cultivars found in Samoa. The first study was carried out across 28 farm localities in both islands of Upolu and Savaii from September to October 2016. The second study was carried out in the field and Entomology laboratory at the University of the South Pacific, Alafua campus from July to December, 2016. Results from the survey found that the West Indian sweet potato weevil was most commonly distributed in inland areas than coastal and highland areas. This is due to favourable environmental conditions preferred by the pest for growth such as dry and warmer temperatures in inland areas.
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