A5067776979- Insect behavior and control techniques
- Insect Resistance and Genetics
- Entomopathogenic Microorganisms in Pest Control
- Forest Insect Ecology and Management
- Plant and animal studies
- Insect symbiosis and bacterial influences
- Biological Control of Invasive Species
- Scarabaeidae Beetle Taxonomy and Biogeography
- Evolution and Paleontology Studies
- Hemiptera Insect Studies
- Physiological and biochemical adaptations
- Botany and Geology in Latin America and Caribbean
- Hymenoptera taxonomy and phylogeny
- Insect Pest Control Strategies
- Cephalopods and Marine Biology
University of Antananarivo
2016-2022
Centre de Coopération Internationale en Recherche Agronomique pour le Développement
2016-2022
Peuplements végétaux et bioagresseurs en milieu tropical
2016
Knowledge of the host range a biocontrol agent (BCA) is fundamental. Host determines BCA's economic potential, as well possible risk for non-target organisms. Entomopathogenic fungal strains belonging to genus Beauveria are widely used BCA, but our knowledge their physiological only partial. The aim this study was improve understanding three two species, B. hoplocheli and bassiana. We performed laboratory mortality bioassays assess pathogenicity virulence against nine insect pests, orders:...
Drosophila suzukii (Matsumura, 1931) is an Asian pest of grapes and other soft fruits that has invaded North America Europe during the last decade. Here we report its recent occurrence on two islands Comoros archipelago in Mozambique Channel, namely Mayotte Ngazidja (Grande Comore), April 2017 November 2018, respectively. We also document absence from African Channel Western Indian Ocean including until 2013. ashburneriTsacas, 1984 only member species subgroup known Comoros, but it...
Abstract Ten economically important species belonging to the Tephritidae have been recorded in Union of Comoros (an island nation off coast East Africa). Little is known about distribution these and how they are affected by climatic factors archipelago. The main objectives this study were characterize: (i) population dynamics tephritid fruit flies relation season host availability (ii) geographic tephritids temperature rainfall. was conducted during 2 years at 11 sites on three islands...
Abstract Invasions by exotic species in areas already occupied related may lead to extinction or niche partitioning. Bactrocera dorsalis has invaded the Comoros archipelago 2005 where other tephritids were present. The host ranges of fruit flies studied conducting a seven‐year survey on three islands with substantial sampling effort comprising 91 plant from 37 families. results showed that 45 16 families infested tephritid species. Eight fly detected sampled fruits, but 78% individuals...
Abstract An increasing number of invasive fruit fly pests are colonizing new grounds. With this study, we aimed to uncover the invasion pathways oriental fly, Bactrocera dorsalis into islands Indian Ocean. By using genome‐wide SNP data and a multipronged approach consisting PCA, ancestry analysis, phylogenetic inference, kinship networks, were able resolve two independent pathways. A western pathway involved stepping‐stone migration B. from east African coast Comoros, along Mayotte...
Abstract Invasive species have once been called a ‘grand experiment in evolution’ but natural replicates of such experiments are often scarce. In particular, whether the rapid adaptation to new environment involves genetic predisposition ancestral range or mainly occurs via post-introductory selection on genetically variable propagule remains unknown. Here, we investigate parallel two drosophilid genus Zaprionus , Z. indianus (the African fig fly) and tuberculatus contrasting agrarian desert...