scholarly journals Infestation Outbreak of the African sugarcane stalk borer Eldana saccharina W. (Lepidoptera: Pyralidae) in Sugarcane Plantations of Northern Ivory Coast: Management Strategies Under Implementation

Author(s):  
Crépin B Péné ◽  
Mélanie Boua ◽  
Yah Coulibaly-Ouattara ◽  
François-Régis Goebel
1991 ◽  
Vol 46 (7-8) ◽  
pp. 678-686 ◽  
Author(s):  
B. V. Burger ◽  
A. E. Nell ◽  
D. Smit ◽  
H. S. C. Spies

Four constituents of the hair pencil secretion of the male African sugarcane stalk borer, Eldana saccharina, having a molecular mass of 312 and peculiar El mass spectra with an exceptionally abundant base peak at m /z 103, were isolated preparatively from an extract of the secretion. Using 1H and 13C NMR spectral analysis, these constituents were identified as fiveand six-membered cyclic glycerol acetals of Z-9-hexadecenal, viz. cis- and trans-2-(Z- 8-pentadecenyl)-4-hydroxymethyl-1,3-dioxolane, and cis- and trans-2-(Z-8-pentadecenyl)- 5-hydroxy-1,3-dioxane. These compounds are related to the 2-alkenyl-4-hydroxymethyl-1,3- dioxolane dihydrogen phosphate esters, known to be the active constituents of the smooth muscle contracting acidic phospholipid (Darmstoff) which was isolated from the intestine of mammals. The presence of these acetals in the tail brush secretion of E. saccharina could possibly be the first evidence that com pounds related to the active principle of Darmstoff, may also be present in the insect kingdom. The possibility that these four compounds or their dihydrogen phosphate esters might play a part in the eversion or retraction of the tail brushes of the male insect, is briefly discussed.


Author(s):  
Alabi AKINYOOLA Kehinde ◽  
Olayemi ODEKANYIN Oludele ◽  
KUKU Adenike ◽  
Babatunde SOSAN Mosudi

Author(s):  

Abstract A new distribution map is provided for Maliarpha separatella Ragonot. Lepidoptera: Pyralidae (Madagascar/African white rice borer). Attacks rice. Information is given on the geographical distribution in Africa, Benin, Burkina Faso, Cameroon, Chad, Comoro Islands, Gambia, Ghana, Guinea, Ivory Coast, Kenya, Liberia, Madagascar, Malawi, Mali, Mauritania, Mauritius, Niger, Nigeria, Réunion, Senegal, Sierra Leone, Sudan, Tanzania, Togo, Uganda, Zaire, Zambia, Asia, Burma.


2020 ◽  
Vol 12 (12) ◽  
pp. 2554-2560
Author(s):  

Abstract Busseola fusca (Fuller) (Lepidoptera: Noctuidae), the maize stalk borer, is a widespread crop pest in sub-Saharan Africa that has been the focus of biological research and intensive management strategies. Here, we present a comprehensive annotated transcriptome of B. fusca (originally collected in the Western Province of Kenya) based on ten pooled libraries including a wide array of developmental stages, tissue types, and exposures to parasitoid wasps. Parasitoid wasps have been used as a form of biocontrol to try and reduce crop losses with variable success, in part due to differential infectivities and immune responses among wasps and hosts. We identified a number of loci of interest for pest management, including genes potentially involved in chemoreception, immunity, and response to insecticides. The comprehensive sampling design used expands our current understanding of the transcriptome of this species and deepens the list of potential target genes for future crop loss mitigation, in addition to highlighting candidate loci for differential expression and functional genetic analyses in this important pest species.


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