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Anastrepha

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Lucas Sánchez – 1st expert on this subject based on the ideXlab platform

  • Effect of the transformer-2 gene of Anastrepha on the somatic sexual development of Drosophila.
    The International journal of developmental biology, 2020
    Co-Authors: Francesca Sarno, María Fernanda Ruiz, Lucas Sánchez

    Abstract:

    The transformer-2 gene is involved in sex determination in tephritid flies (Tephritidae). It is required for the auto-regulation of the transformer gene (the memory device for sex determination in these insects) and for the female-specific splicing of doublesex pre-mRNA, the last gene in the sex determination gene cascade. The present manuscript addressed the question of the functional conservation of the tephritid Anastrepha Tra2 protein to direct sexual development in Drosophila (Drosophilidae). To express this protein in Drosophila, the GAL4-UAS system was used. The Anastrepha Tra2 protein supplies tra-2 function in Drosophila: this protein would form a complex with the endogenous Drosophila Tra protein to promote the female-specific splicing of the Drosophila doublesex pre-mRNA. The feminisation produced by the Anastrepha Tra2 protein was, however, partial.

  • Effect of the transformer-2 gene of Anastrepha on the somatic sexual development of Drosophila
    The International Journal of Developmental Biology, 2020
    Co-Authors: Francesca Sarno, María Fernanda Ruiz, Lucas Sánchez

    Abstract:

    6 páginas, 2 figuras — PAGS nros. 975-980The transformer-2 gene is involved in sex determination in tephritid flies (Tephritidae). It is required for the auto-regulation of the transformer gene (the memory device for sex determination in these insects) and for the female-specific splicing of doublesex pre-mRNA, the last gene in the sex determination gene cascade. The present manuscript addressed the question of the functional conservation of the tephritid Anastrepha Tra2 protein to direct sexual development in Drosophila (Drosophilidae). To express this protein in Drosophila, the GAL4-UAS system was used. The Anastrepha Tra2 protein supplies tra-2 function in Drosophila: this protein would form a complex with the endogenous Drosophila Tra protein to promote the female-specific splicing of the Drosophila doublesex pre-mRNA. The feminisation produced by the Anastrepha Tra2 protein was, however, partialThis work was financed by grant BFU2008-00474 awarded to L. Sánchez by the D.G.I.C.Y.TPeer reviewe

  • the gene transformer 2 of Anastrepha fruit flies diptera tephritidae and its evolution in insects
    BMC Evolutionary Biology, 2010
    Co-Authors: Francesca Sarno, Denise Selivon, André L.p. Perondini, María Fernanda Ruiz, Jose M Eirinlopez, Lucas Sánchez

    Abstract:

    Background
    In the tephritids Ceratitis, Bactrocera and Anastrepha, the gene transformer provides the memory device for sex determination via its auto-regulation; only in females is functional Tra protein produced. To date, the isolation and characterisation of the gene transformer-2 in the tephritids has only been undertaken in Ceratitis, and it has been shown that its function is required for the female-specific splicing of doublesex and transformer pre-mRNA. It therefore participates in transformer auto-regulatory function. In this work, the characterisation of this gene in eleven tephritid species belonging to the less extensively analysed genus Anastrepha was undertaken in order to throw light on the evolution of transformer-2.

Martin Aluja – 2nd expert on this subject based on the ideXlab platform

  • genetic variation in Anastrepha obliqua diptera tephritidae in a highly diverse tropical environment in the mexican state of veracruz
    Journal of Economic Entomology, 2019
    Co-Authors: Martin Aluja, Bruce A Mcpheron, Raul Ruizarce, Mdsajedul Islam

    Abstract:

    : There has been considerable interest in understanding biological, ecological, historical, and evolutionary processes that contribute to the diversification of species and populations among tephritid fruit flies. Only a limited number of studies have examined the genetic diversity and population biology of species belonging to the genus Anastrepha considering fine-scale differentiations associated to locality as well as hosts over an entire fruiting season. To expand our understanding of population structure and genetic diversity in one of the critical Anastrepha fruit flies populations in a highly diverse tropical environment we analyzed Anastrepha obliqua (Macquart) (Diptera: Tephritidae) in the Mexican state of Veracruz from five host fruit species and 52 geographic collections using sequence data from mtDNA and microsatellite markers from nuclear DNA. Indeed, we examined the population structure of this pest in a micro-geographic region and report on relationships and historical processes for individuals collected within a small portion of the geographic range of its distribution. Analyses of 1055 bp mtDNA sequences from CO1and ND1genes across 400 individuals detected 34 haplotypes. Haplotype and nucleotide diversity was low, with 53% of the individuals exhibiting a single haplotype (OBV1). Host association and fine-scale differentiation at 17 microsatellite markers across 719 individuals from 32 of the 52 geographic collections reveal fragmented A. obliqua populations. These findings have important implications for the implementation of the Sterile Insect Technique (SIT) and other pest management programs used to control this pestiferous fruit fly.

  • A new species of Anastrepha (Diptera: Tephritidae) from Euphorbia tehuacana (Euphorbiaceae) in Mexico.
    Zootaxa, 2014
    Co-Authors: Allen L Norrbom, Ana Lucia Castillo-meza, Juan Héctor García-chávez, Martin Aluja, Juan Rull

    Abstract:

    Anastrepha tehuacana , a new species of Tephritidae (Diptera) from Tehuacan, Puebla, Mexico reared from seeds of Euphorbia tehuacana (Brandegee) V.W. Steinm. (Euphorbiaceae), is described and illustrated. Its probable relationship to A. relicta Hernandez-Ortiz is discussed.

  • understanding long term fruit fly diptera tephritidae population dynamics implications for areawide management
    Journal of Economic Entomology, 2012
    Co-Authors: Martin Aluja, Larissa Guillen, Mariano Ordano, Juan Rull

    Abstract:

    ABSTRACT Fruit flies (Diptera: Tephritidae) are devastating agricultural pests worldwide but studies on their long-term population dynamics are sparse. Our aim was to determine the mechanisms driving long-term population dynamics as a prerequisite for ecologically based areawide pest management. The population density of three pestiferous Anastrepha species [Anastrepha ludens (Loew), Anastrepha obliqua (Macquart), and Anastrepha serpentina (Wiedemann) ] was determined in grapefruit (Citrus × paradisi Macfad.), mango (Mangifera indica L.), and sapodilla [Manilkara zapota (L.) P. Royen] orchards in central Veracruz, Mexico, on a weekly basis over an 11-yr period. Fly populations exhibited relatively stable dynamics over time. Population dynamics were mainly driven by a direct density-dependent effect and a seasonal feedback process. We discovered direct and delayed influences that were correlated with both local (rainfall and air temperature) and global climatic variation (El Nino Southern Oscillation [ENSO…

María Fernanda Ruiz – 3rd expert on this subject based on the ideXlab platform

  • Effect of the transformer-2 gene of Anastrepha on the somatic sexual development of Drosophila
    The International Journal of Developmental Biology, 2020
    Co-Authors: Francesca Sarno, María Fernanda Ruiz, Lucas Sánchez

    Abstract:

    6 páginas, 2 figuras — PAGS nros. 975-980The transformer-2 gene is involved in sex determination in tephritid flies (Tephritidae). It is required for the auto-regulation of the transformer gene (the memory device for sex determination in these insects) and for the female-specific splicing of doublesex pre-mRNA, the last gene in the sex determination gene cascade. The present manuscript addressed the question of the functional conservation of the tephritid Anastrepha Tra2 protein to direct sexual development in Drosophila (Drosophilidae). To express this protein in Drosophila, the GAL4-UAS system was used. The Anastrepha Tra2 protein supplies tra-2 function in Drosophila: this protein would form a complex with the endogenous Drosophila Tra protein to promote the female-specific splicing of the Drosophila doublesex pre-mRNA. The feminisation produced by the Anastrepha Tra2 protein was, however, partialThis work was financed by grant BFU2008-00474 awarded to L. Sánchez by the D.G.I.C.Y.TPeer reviewe

  • Effect of the transformer-2 gene of Anastrepha on the somatic sexual development of Drosophila.
    The International journal of developmental biology, 2020
    Co-Authors: Francesca Sarno, María Fernanda Ruiz, Lucas Sánchez

    Abstract:

    The transformer-2 gene is involved in sex determination in tephritid flies (Tephritidae). It is required for the auto-regulation of the transformer gene (the memory device for sex determination in these insects) and for the female-specific splicing of doublesex pre-mRNA, the last gene in the sex determination gene cascade. The present manuscript addressed the question of the functional conservation of the tephritid Anastrepha Tra2 protein to direct sexual development in Drosophila (Drosophilidae). To express this protein in Drosophila, the GAL4-UAS system was used. The Anastrepha Tra2 protein supplies tra-2 function in Drosophila: this protein would form a complex with the endogenous Drosophila Tra protein to promote the female-specific splicing of the Drosophila doublesex pre-mRNA. The feminisation produced by the Anastrepha Tra2 protein was, however, partial.

  • the gene transformer 2 of Anastrepha fruit flies diptera tephritidae and its evolution in insects
    BMC Evolutionary Biology, 2010
    Co-Authors: Francesca Sarno, Denise Selivon, André L.p. Perondini, María Fernanda Ruiz, Jose M Eirinlopez, Lucas Sánchez

    Abstract:

    Background
    In the tephritids Ceratitis, Bactrocera and Anastrepha, the gene transformer provides the memory device for sex determination via its auto-regulation; only in females is functional Tra protein produced. To date, the isolation and characterisation of the gene transformer-2 in the tephritids has only been undertaken in Ceratitis, and it has been shown that its function is required for the female-specific splicing of doublesex and transformer pre-mRNA. It therefore participates in transformer auto-regulatory function. In this work, the characterisation of this gene in eleven tephritid species belonging to the less extensively analysed genus Anastrepha was undertaken in order to throw light on the evolution of transformer-2.