Effects of Hyptis spicigera Lam. (Labiatae) on the behaviour and development of Callosobruchus maculatus F. (Coleoptera: Bruchidae), a pest of stored cowpeas

被引:15
作者
Sanon, A
Ilboudo, Z
Dabire, CLB
Nebie, RCH
Dicko, IO
Monge, JP
机构
[1] UFR SVT Univ Ouagadougou, Lab Entomol Fondamentale & Appl, Ouagadougou, Burkina Faso
[2] Inst Rech Sci Appl & Technol, Dept Subst Nat, Ouagadougou, Burkina Faso
[3] Univ Polytech Bobo Dioulasso, Inst Dev Rural, Bobo Dioulasso, Burkina Faso
[4] Univ Tours, Inst Rech Biol Insecte, F-37041 Tours, France
关键词
cowpea storage; Callosobruchus maculatus; Hyptis spicigera; lehal; repellent;
D O I
10.1080/09670870600619890
中图分类号
Q96 [昆虫学];
学科分类号
摘要
The use of beni seed, Hyptis spicigera Lam. ( Labiatae), to protect stored cowpeas from bruchid attacks is a widespread practice in West Africa. More knowledge about its actual effects on storage pests is needed to enhance its effectiveness. In this laboratory study, repellent and lethal effects of powder and essential oil from H. spicigera on Callosobruchus maculatus, the main pest of stored cowpeas, were studied. Repellency tests undertaken with a Y-tube olfactometer showed that powder was repulsive for C. maculatus adults. On the other hand, this product had no insecticidal activity. Essential oil had a dose-dependent insecticidal effect while sublethal doses repelled the adults. Both products reduced oviposition by 15-19 and 7-78% according to the doses of powder and essential oil, respectively, tested. Similarly, egg viability decreased with increasing doses of powder and essential oil used in a range of 40-75 and 24-86%, respectively. Only essential oil was lethal to C. maculatus larvae developing within cowpea seeds; however, oil activity was age-dependent, younger instars being more susceptible. These results are discussed with a view of controlling C. maculatus populations in stored cowpeas.
引用
收藏
页码:117 / 123
页数:7
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