The Efficacy of the Plant Extracts of Afrostyrax kamerunensis, Monodora myristica, Moringa oleifera and Azadirachta indica against the Infestation of the Leather Beetle, Dermestes maculatus De Geer in Smoked African Mud Catfish, Clarias gariepinus Burchell

Jordan Journal of Biological Sciences

Luke C. Nwosu¹ 

关键词: Afrostyrax kamerunensis;    Botanicals;    Dermestes maculatus;    Fish management;    Repellent;    Resistance.;   

DOI  :  

学科分类：生物科学（综合）

来源: Hashemite University, Deanship of Research and Higher Studies

【 摘 要 】

The information that the leather beetle, Dermestes maculatus De Geer is globally less susceptible to chemical insecticides provided the rationale to test some cosmopolitan elite plant materials on the pest. Extracts from four plant materials (country onion, Afrostyrax kamerunensis Perkins and Gilg; African nut meg, Monodora myristica Dunal; moringa, Moringa oleifera Lam; and neem, Azadirachta indica A. Juss) at 2.5 and 5.0 mL/ 100 g fish were assessed under tropical storage conditions (temperature: 31.9oC; relative humidity: 68.3 %) to control the leather beetle, Dermestes maculatus infesting smoked African mud catfish, Clarias gariepinus Burchell. Four important indices in insect pest control were assessed using standard storage entomology procedures. Each of the plant extracts (excluding M. oleifera) at 5.0 ml/ 100 g fish caused significantly high mortality in D. maculatus adults at third and fourth day exposure periods. Adult beetle emergence was absolutely inhibited in the catfish treated with A. kamerunensis, M. myristica and A. indica at both test concentrations. Weight loss due to insect infestation was suppressed significantly, also when compared with untreated control. The test botanicals were effective in this order, A. indica > M. myristica > A. kamerunensis > M. oleifera. Dermestes maculatus adults were most sensitive to the repellent action of A. kamerunensis. Therefore, the study has identified a plant material that repels D. maculatus adults better than neem. These findings revealed that the extracts of A. indica, M. myristica and A. kamerunensis could be incorporated into post-harvest fish management strategies against D. maculates, particularly in solving the problem of the development of resistance to chemical insecticides.

【 授权许可】

CC BY