Evaluation of host plant resistance, sowing date modification and intercropping as methods for the control ofMylabris and Coryna species (Coleoptera: Meloidae) infesting pearl millet in the Nigerian Sudan savanna

Lale, N. E. S.; Sastawa, B. M.

doi:10.1006/jare.2000.0690

Cited by 9 publications

(2 citation statements)

References 8 publications

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“…Further studies on pearl millet also confirmed MHM to be an important pest in Sudano-sahelian West African region (Owusu et al, 2004;Lale and Sastawa, 2000;Harris, 1995;Ndoye, 1991;Gahukar et al, 1986). The variability of the MHM incidence and abundance of stem borers could be due to the differences within the agro-ecological zones including the rainfall patterns, the incidence of egg parasitism, type of cultivars grown, date of planting which influences the flowering period as well as cultural practices used by the farmers (Goudiaby et al, 2018;Lale and Sastawa;. In fact, the presence of the egg parasitoid, Trichogrammatoidea armigera Nagaraja, may have contributed in reducing the MHM population in the northern blocks.…”

Section: Incidence Of the Mhmmentioning

confidence: 90%

Efficacy of augmentative release of the parasitoid wasp Bracon hebetor against the pearl millet headminer

Goudiaby

Sarr²,

Bâ

et al. 2019

Journal of Biological Control

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Efficacy of augmentative release of the parasitoid wasp Bracon hebetor against the pearl millet headminer ABSTRACT: The yield losses in pearl millet, estimated to be about 85%, are mainly due to millet headminer, Heliocheilus albipunctella. This study is aimed at determining the status of this serious insect pest in the pearl millet production system within the groundnut basin of Senegal and to assess the efficacy of augmentative releases of its parasitoid wasp, Bracon hebetor, to control it. The study area was divided into three homogenous blocks (Northern, Southern and Eastern parts) where a set of three villages was selected for release of the parasitoid and another three as control villages where no releases were made. The results revealed that in all the villages where the parasitoid was released, an increase in larval mortality due to parasitism ranging between 9% and 26% was recorded in comparison with the control villages. Consequently, damages recorded were significantly lower in the villages with parasitoid releases.

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Section: Incidence Of the Mhmmentioning

confidence: 90%

Efficacy of augmentative release of the parasitoid wasp Bracon hebetor against the pearl millet headminer

Goudiaby

Sarr²,

Bâ

et al. 2019

Journal of Biological Control

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“…that feed on flowers. Consumption of flowers by blister beetles has a negative effect on seed setting (Evans et al , 1989; Gahukar, 1991; Lale & Sastawa, 2000). The flowers of different host plants of H. apicicornis differ in shape, size and colour, although the majority of their colours are hues of violet, as perceived by the human eye.…”

Section: Introductionmentioning

confidence: 99%

Responses of the blister beetle Hycleus apicicornis to visual stimuli

Lebesa

Hassanali

Pickett

et al. 2011

Physiological Entomology

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Insect attraction to host plants may be partly mediated by visual stimuli. In the present study, the responses of adult Hycleus apicicornis (Guér.) (Coleoptera: Meloidae) to plant models of different colours, different combinations of two colours, or three hues of blue of different shapes are compared. Single-colour models comprised the colours sky blue, bright green, yellow, red, white and black. Sky blue (reflecting light in the 440-500 nm region) is the most attractive, followed by white, which reflects light over a broader range (400-700 nm). On landing on sky blue targets, beetles exhibit feeding behaviour immediately. When different hues of blue (of different shapes) are compared, sky blue is preferred over turquoise, followed by dark blue, indicating that H. apicicornis is more attracted to lighter hues of blue than to darker ones. No significant differences are found between the three shapes (circle, square and triangle) tested, suggesting that reflectance associated with colour could be a more important visual cue than shape for host location by H. apicicornis. The preference of H. apicicornis for sky blue can be exploited in designing an attractive trap for its management.

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