scholarly journals Genetic hitchhiking and resistance evolution to transgenic Bt toxins: insights from the African stalk borer Busseola fusca (Noctuidae)

Heredity ◽  
2016 ◽  
Vol 118 (4) ◽  
pp. 330-339 ◽  
Author(s):  
P Campagne ◽  
C Capdevielle-Dulac ◽  
R Pasquet ◽  
S J Cornell ◽  
M Kruger ◽  
...  
Keyword(s):  
Busseola Fusca ◽  
Genetic Hitchhiking ◽  
Stalk Borer ◽  
Resistance Evolution ◽  
Bt Toxins

scholarly journals Plant Abandonment by Busseola fusca (Lepidoptera: Noctuidae) Larvae: Do Bt Toxins Have an Effect?

Insects ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 77 ◽  
Author(s):  
Andri Visser ◽  
Hannalene Du Plessis ◽  
Annemie Erasmus ◽  
Johnnie Van den Berg
Keyword(s):  
Resistance Management ◽  
Leaf Tissue ◽  
Busseola Fusca ◽  
High Dose ◽  
Pest Species ◽  
Bt Maize ◽  
Resistance Evolution ◽  
Bt Toxins ◽  
Important Pest ◽  
Lepidoptera Noctuidae

Busseola fusca (Fuller; Lepidoptera: Noctuidae) is an important pest of maize in Africa and can be effectively controlled by Bt maize. However, the sustainability of this technology is threatened by resistance evolution, which necessitates the implementation of the high-dose/refuge insect resistance management (IRM) strategy. Despite the success of this IRM strategy, it is based on several assumptions about insect-hostplant interactions that are not always valid for different pest species. In this study, the plant abandonment behavior of Cry1Ab-resistant and susceptible B. fusca larvae were evaluated on a non-Bt, single toxin (Cry1Ab), and a pyramid event (Cry1.105 + Cry2Ab2) of maize over a four-day period. The aim was to determine if larvae are more likely to abandon maize plants that contain Bt-toxins than conventional non-Bt plants, and if resistance to the Cry1Ab-toxin affects this behavior. This study found that both Bt-resistant and susceptible B. fusca neonate larvae show feeding avoidance behavior and increased plant abandonment rates when exposed to Bt maize leaf tissue. The implications of these findings for the design of IRM strategies and choice of refuge structures are discussed in the context of Bt maize in Africa.

scholarly journals Biocidal Activities of Seed Oils of Jatropha curcas and Moringa oleifera on Development of African Maize Stalk borer, Busseola fusca Fuller (Lepdoptera: Pyralidae)

2020 ◽  
Vol 36 (1) ◽  
pp. 46-53
Author(s):  
H. Sule
Keyword(s):  
Jatropha Curcas ◽  
Moringa Oleifera ◽  
Developmental Stages ◽  
Crop Protection ◽  
Busseola Fusca ◽  
Adult Emergence ◽  
Seed Oils ◽  
Plant Seed ◽  
Stalk Borer ◽  
Randomized Design

Laboratory experiment was conducted at the Department of Crop Protection Laboratory, Faculty of Agriculture, Bayero University, Kano, in order to assess the effect of oils obtained from the seeds of Jatropha curcas and Moringa oleifera on African Maize Stalk Borer (Busseola fusca Fuller). The effects of the plant seed oils on larvae mortality, pupae and adult emergence were tested on freshly cut leaves/stem of maize 3-4 cm long) and treated with the prepared plant oils at various concentrations (10, 20, and 30%) and control (0%). The experiment was laid out in a completely randomized design and replicated four times. The results showed that both plant seeds oils were lethal to the developmental stages of B. fusca, causing mortality (21%) to the larvae, and subsequently preventing and/or suppressing pupae (2.08) and adult emergence (1.95). Treatment at 30% concentration was found to be more lethal to all the developmental stages of the test insect. Based on the findings of this study, it is recommended that any of the plant seed oils at 30 % concentration could be used to manage B. fusca.

scholarly journals Comprehensive Transcriptome of the Maize Stalk Borer, Busseola fusca, from Multiple Tissue Types, Developmental Stages, and Parasitoid Wasp Exposures

2020 ◽  
Vol 12 (12) ◽  
pp. 2554-2560
Author(s):  
Keyword(s):  
Target Genes ◽  
Developmental Stages ◽  
Management Strategies ◽  
Busseola Fusca ◽  
Parasitoid Wasp ◽  
Sub Saharan Africa ◽  
Biological Research ◽  
Parasitoid Wasps ◽  
Pest Species ◽  
Stalk Borer

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.

Lipophorin of the larval stalk borer, Busseola Fusca: Purification and properties

1993 ◽  
Vol 14 (02) ◽  
pp. 167-172
Author(s):  
Dorington O. Ogoyi ◽  
Ellie O. Osir ◽  
James O. Ochanda
Keyword(s):  
Busseola Fusca ◽  
Stalk Borer ◽  
Purification And Properties
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