The Experts below are selected from a list of 5040 Experts worldwide ranked by ideXlab platform
Francois Verheggen - One of the best experts on this subject based on the ideXlab platform.
-
First Record of Tuta absoluta (Meyrick, 1917) (Lepidoptera: Gelechiidae) in Burkina Faso
African Entomology, 2017Co-Authors: Schémaeza Bonzi, Francois Verheggen, Thomas Bawin, Frederic Francis, Irénée Somda, Slimane Boukraa, Anne Legrève, Bruno SchiffersAbstract:During a survey on plant protection practices conducted in March 2016, several tomato leafminers were captured in vegetable crops at Goinre site (Ouahigouya) in the northern region of Burkina Faso. Adult specimens were identified as Tuta absoluta Meyrick (Lepidoptera: Gelechiidae) based on male genitalia. This is the first record of this important tomato pest in Burkina Faso. Thanks to favourable climatic conditions encountered in Burkina Faso, it is likely that this pest will spread rapidly in the territory. Moreover, it is now known for its insecticide resistance and ability to develop on alternative host plants.We expect producers to perform additional chemical treatments, leading to increasing risks, including operator exposure to pesticides, environmental pollution and residues on vegetables. The presence of T. absoluta in Burkina Faso may also have economic impacts associated with export of tomato fruit to neighbouring countries.
-
infestation level influences oviposition site selection in the tomato leafminer tuta absoluta lepidoptera Gelechiidae
Insects, 2014Co-Authors: Thomas Bawin, Rudy Caparros Megido, Lara De Backer, David Dujeu, Pauline Legrand, Frederic Francis, Francois VerheggenAbstract:The tomato leafminer, Tuta absoluta (Lepidoptera: Gelechiidae), is a devastating pest that develops principally on solanaceous plants throughout South and Central America and Europe. In this study, we tested the influence of three levels of T. absoluta infestations on the attraction and oviposition preference of adult T. absoluta. Three infestation levels (i.e., non-infested plants, plants infested with 10 T. absoluta larvae, and plants infested with 20 T. absoluta larvae) were presented by pairs in a flying tunnel to groups of T. absoluta adults. We found no differences in terms of adult attraction for either level of infestations. However, female oviposition choice is influenced by larvae density on tomato plants. We discuss the underlying mechanisms and propose recommendations for further research.
-
pheromone based management strategies to control the tomato leafminer tuta absoluta lepidoptera Gelechiidae a review
Biotechnologie Agronomie Société et Environnement, 2013Co-Authors: Rudy Caparros Megido, Eric Haubruge, Francois VerheggenAbstract:Synthese bibliographique : les strategies de lutte pheromonale utilisees pour controler la mineuse de la tomate, Tuta absoluta (Lepidoptera : Gelechiidae). Cette synthese bibliographique fait le point sur les strategies de lutte pheromonale developpees specifiquement pour lutter contre la mineuse de la tomate, Tuta absoluta (Lepidoptera: Gelechiidae). Ce ravageur provient d’Amerique du Sud et est actuellement considere comme un des plus importants ravageurs de tomates dans les pays europeens et nord-africains du bassin mediterraneen. Apres avoir presente les principes generaux des strategies de lutte pheromonale, les strategies utilisees pour controler T. absoluta, comme les techniques de detection de ravageurs, de suivi des populations, de piegeage de masse et de confusion sexuelle, sont decrites successivement dans cette synthese.
M Lopezferber - One of the best experts on this subject based on the ideXlab platform.
-
genetic and biological analysis of colombian phthorimaea operculella granulovirus isolated from tecia solanivora lepidoptera Gelechiidae
Applied and Environmental Microbiology, 2010Co-Authors: Carlos Espinelcorreal, Xavier Lery, Laura Villamizar, Juliana Gomez, Jean Louis Zeddam, Alba Marina Cotes, M LopezferberAbstract:Tecia solanivora (Lepidoptera: Gelechiidae) is an invasive potato pest of the north of South America that recently colonized zones where Phthorimaea operculella (Lepidoptera: Gelechiidae), a taxonomically related insect, was established. Nowadays, both species can be found in most areas in different proportions. The Phthorimaea operculella granulovirus (PhopGV) was found to efficiently control P. operculella and was used as a biopesticide in storage conditions. However, no appropriate biological control methods exist for T. solanivora, and the use of granulovirus isolates would provide a solution. The Colombian Corporation for Agricultural Research (CORPOICA) carried out several T. solanivora larva samplings in Colombia with the aim of finding potential isolates. Five geographical granulovirus isolates from T. solanivora (VG001, VG002, VG003, VG004, and VG005) were found, and molecular analysis by REN profiles shows three different genotypic variants in Colombia. Analysis of their genomes revealed their relatedness to PhopGV. Two isolates exhibited submolar bands in their REN patterns, suggesting a mixture of viral genotypes. These data were confirmed by PCR amplification and sequencing of particular regions of the viral genomes. Their biological activity was assayed on both hosts, T. solanivora and P. operculella. A significantly higher pathogenicity in both hosts was observed with isolates VG001 and VG005 than with isolate VG003 or a Peruvian isolate (from P. operculella) used as a reference in the bioassay. Based on their molecular and biological activity characteristics, VG001 and VG005 isolates should be selected for further analysis in order to establish their potential as biological control agents.
Diego F Villanuevamejia - One of the best experts on this subject based on the ideXlab platform.
-
mitochondrial genome characterization of tecia solanivora lepidoptera Gelechiidae and its phylogenetic relationship with other lepidopteran insects
Gene, 2016Co-Authors: Viviana Ramirezrios, Nicolas D Francosierra, Javier Correa Alvarez, C I Saldamandobenjumea, Diego F VillanuevamejiaAbstract:Abstract The complete mitogenome of the potato tuber moth Tecia solanivora (Lepidoptera: Gelechiidae) was sequenced, annotated, characterized and compared with 140 species of the order Lepidoptera. The circular genome is 15,251 bp, containing 37 genes (13 protein-coding genes (PCGs), two rRNA genes, 22 tRNA genes and an A + T-rich region). The gene arrangement was identical to other lepidopteran mitogenomes but different from the ancestral arrangement found in most insects for the tRNA-Met gene (A + T-region, tRNA-I, tRNA-Q, tRNA-M). The mitogenome of T. solanivora is highly A + T-biased (78.2%) and exhibits negative AT- and GC-skews. All PCGs are initiated by canonical ATN start codons, except for Cytochrome Oxidase subunit 1 (COI), which is initiated by CGA. Most PCGs have a complete typical stop codon (TAA). Only NAD1 has a TAG stop codon and the COII and NAD5 genes have an incomplete stop codon consisting of just a T. The A + T-rich region is 332 bp long and contains common features found in lepidopteran mitogenomes, including the ‘ATAGA’ motif, a 17 bp poly (T) stretch and a (AT)8 element preceded by the ‘ATTTA’ motif. Other tandem repeats like (TAA)4 and (TAT)7 were found, as well as (T)6 and (A)10 mononucleotide repeat elements. Finally, this mitogenome has 20 intergenic spacer regions. The phylogenetic relationship of T. solanivora with 28 other lepidopteran families (12 superfamilies) showed that taxonomic classification by morphological features coincides with the inferred phylogeny. Thus, the Gelechiidae family represents a monophyletic group, suggesting that T. solanivora and Pectinophora gossypiella have a recent common ancestor.
Thomas Bawin - One of the best experts on this subject based on the ideXlab platform.
-
First Record of Tuta absoluta (Meyrick, 1917) (Lepidoptera: Gelechiidae) in Burkina Faso
African Entomology, 2017Co-Authors: Schémaeza Bonzi, Francois Verheggen, Thomas Bawin, Frederic Francis, Irénée Somda, Slimane Boukraa, Anne Legrève, Bruno SchiffersAbstract:During a survey on plant protection practices conducted in March 2016, several tomato leafminers were captured in vegetable crops at Goinre site (Ouahigouya) in the northern region of Burkina Faso. Adult specimens were identified as Tuta absoluta Meyrick (Lepidoptera: Gelechiidae) based on male genitalia. This is the first record of this important tomato pest in Burkina Faso. Thanks to favourable climatic conditions encountered in Burkina Faso, it is likely that this pest will spread rapidly in the territory. Moreover, it is now known for its insecticide resistance and ability to develop on alternative host plants.We expect producers to perform additional chemical treatments, leading to increasing risks, including operator exposure to pesticides, environmental pollution and residues on vegetables. The presence of T. absoluta in Burkina Faso may also have economic impacts associated with export of tomato fruit to neighbouring countries.
-
infestation level influences oviposition site selection in the tomato leafminer tuta absoluta lepidoptera Gelechiidae
Insects, 2014Co-Authors: Thomas Bawin, Rudy Caparros Megido, Lara De Backer, David Dujeu, Pauline Legrand, Frederic Francis, Francois VerheggenAbstract:The tomato leafminer, Tuta absoluta (Lepidoptera: Gelechiidae), is a devastating pest that develops principally on solanaceous plants throughout South and Central America and Europe. In this study, we tested the influence of three levels of T. absoluta infestations on the attraction and oviposition preference of adult T. absoluta. Three infestation levels (i.e., non-infested plants, plants infested with 10 T. absoluta larvae, and plants infested with 20 T. absoluta larvae) were presented by pairs in a flying tunnel to groups of T. absoluta adults. We found no differences in terms of adult attraction for either level of infestations. However, female oviposition choice is influenced by larvae density on tomato plants. We discuss the underlying mechanisms and propose recommendations for further research.
Nicolas Desneux - One of the best experts on this subject based on the ideXlab platform.
-
From the Western Palaearctic region to beyond: Tuta absoluta 10 years after invading Europe
Journal of Pest Science, 2017Co-Authors: Mateus R. Campos, Antonio Biondi, Abhijin Adiga, Raul N. C. Guedes, Nicolas DesneuxAbstract:The South American tomato pinworm, Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae), is a devastating pest currently threatening the global tomato industry worldwide. In the last 10 years, it has spread and expanded to most of Europe, Africa and Asia, causing extensive damage to the crop itself and to the international tomato trade. With the aim of providing an overview of the current knowledge on this pest, we have briefly reviewed the available literature relying on its spread, quarantine, modeling and management. Finally, we have underlined the gaps in knowledge and provided several recommendations on how to achieve sustainable control as well as how to prevent further spread into unaffected areas.