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International Journal of Science and Advanced Technology, Volume 2 No 8. First investigation of different Crateava religiosa Forst formulations on the cowpea (Vigna unguiculata Walp.) seed-beetle, Callosobruchus maculatus Fabricius. : Pesticide effect of Crataeva religiosa on Callosobruchus maculatus [texte imprimé] / Faye, Ablaye, Auteur ; Cheikh Thiaw, Auteur ; A Gueye Ndiaye, Auteur . - 2012 . - pp.56-65 : tabl., graph. ISSN : ISSN 2221-8386 http://www.ijsat.com Langues : Anglais ( eng) Catégories : | PROTECTION DES PLANTES ET DES PRODUITS ENTREPOSES
| Mots-clés : | Callosobruchus maculatus, Vigna unguiculata, Crataeva religiosa, ovicidal, adulticidal, contact, fumigation, water extract. | Index. décimale : | H800-PROTECTION DES PRODUITS ENTREPOSES | Résumé : | Callosobruchus maculatus (Fabricius) is the most dangerous ravager of stocked cowpea. A laboratory study aims at essessing the biocides capacities of C. religiosa (Capparidaceae) in the other side of C. maculatus. Three formulations of leaves-based of this plant have been used. The contact of grinded leaves of C. religiosa with the adults leads to a death rate of 100% at the twelfth hour with dose of 0.0218g/cm3. This same dose has a biocide effect that can be compared to the first on with 90% of mortality for eggs of this insect and provohes then a very important reduction of adult sprouting from seeds. Fumigation tests reveal some adulticide effects (100%) and ovicide (86.49%) very interesting with the dose of 0.02912g/cm3. The watery extact of leaves powder is applied on the two sonts of adults of C. maculatus and on the eggs. Some ovicide effects of 57.7% have been registered with the concentration 0.1g/cm3 of watery extact. This same concentration fosters some mortality of 100% at the seventh and ninth day respectively for adults of long-fligtht shape and the adults of normal shape. The molecules responsable for the adulticide effects and ovicide effects have not been identified.
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CN15O2982 | H800-FAY | Article scientifique | CNRA/Bambey | Rayons | Exclu du prêt |
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Journal of Animal Science Advances, 2012, 2(7). Genetic Distribution of the Cowpea (Vigna Unguiculata (L.) Walp) Bruchid (Callosobruchus Maculatus F., Coleoptera, Bruchidae) Populations in Different Agro-Ecological Areas of West Africa [texte imprimé] / Assane Ndong, Auteur ; Cheikh Thiaw, Auteur ; Toffene Diome, Auteur . - Original Article . - 2012 . - pp. 616-630 : tabl., fig. ISSN : ISSN: 2251-7219 www.grjournals.com Langues : Anglais ( eng) Catégories : | PROTECTION DES PLANTES ET DES PRODUITS ENTREPOSES
| Mots-clés : | Vigna Unguiculata, Callosobruchus Maculatus, Zone Agro-Ecologique, 28S, Cytochrome B, Haplotype, Haplogroupe, Afrique de l'Ouest | Index. décimale : | H800-PROTECTION DES PRODUITS ENTREPOSES | Résumé : | Cowpea [(Vigna unguiculata L.) Walp. (Fabaceae)] is the most important food legume grown throughout West Africa. The seeds of this legume protein source are the least expensive for most African populations. However, cowpea production is severely limited by the losses (60-70%) caused by Callosobruchus maculatus F. (Coleoptera: Bruchidae). Whereas many studies have been devoted to the ecology of these bruchids and allowed to distinguish physiotypes and morphotypes, few studies have been conducted on the spatial and temporal structuring of populations of the weevil and migration patterns between agro-ecological areas. By using molecular data; (a combined set of a mitochondrial and ribosomal genes), this study aims to identify genetic diversity and phylogenetic affinities of allopatric C. maculatus populations within the West Africa sub-region. Climate influence (Agro-ecological conditions) was also tested. The results reveal several ecotypes circulate in the West Africa sub-region. Among samples, the genetic distances measured on the total alignment of CytB + 28S (852 bp) ranged between 0 and 0.047 and show clearly fall in three classes. The phylogenetic reconstructions show clearly that the genetic structure of the C. maculatus populations is strongly influenced by the agro-ecological zone.
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CN15O2986 | H800-NDO | Article scientifique | CNRA/Bambey | Rayons | Exclu du prêt |
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South Asian Journal of Experimental Biology, Vol. 4, Issue 5. Determination of impact of Azadirachta indica L. leaves on adults and eggs of Callosobruchus maculatus Fabricius, the largest predator of stored cowpea (Vigna unguiculata Walp) by an applicable method by farmers [texte imprimé] / Faye, Ablaye, Auteur ; Samb, Abdoulaye, Auteur ; Cheikh Thiaw, Auteur . - REGULAR ARTICLE . - 2014 . - pp. 215-221 : tabl., graph. http://www.sajeb.org Langues : Anglais ( eng) Catégories : | PROTECTION DES PLANTES ET DES PRODUITS ENTREPOSES
| Mots-clés : | C. maculatus, oeufs, adultes, Azadirachra indica, Feuilles, Vigna Unguiculata | Index. décimale : | H800-PROTECTION DES PRODUITS ENTREPOSES | Résumé : | The effect of neem leaves has been tested in the laboratory on eggs and adults of cowpea weevil (C. maculatus). Different formulations of this plant were applied to these forms of C. maculatus Fab. Grinding fresh contact sheets induced significant lethal effects from 96.12% to 100% on eggs; whereas 100% of mortality was recorded at the end of eight days of applica-tion to three adults with higher doses. Fumigation on turn proved less effec-tive than contact on eggs. It induced a maximal effect of 95.73% mortality with the larger dose (D4: 0.02912g/cm3). On adults, we recorded highest mortality (100%) from the 7th day of the show with the highest dose. The aqueous extract of neem leaf powder was less effective than all other formu-lations on the eggs as well as adults of this insect; with a higher mortality rate (74.99%) observed on the eggs with the application of the concentration C2. On adults we recorded a maximum effect (100% mortality) from the 13th day of the application with the highest concentration (C1). These mortalities would be related to the support of several active molecules contained in neem as established in literature. |
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