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Lucas Sánchez - One of the best experts on this subject based on the ideXlab platform.
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Effect of the transformer-2 gene of Anastrepha on the somatic sexual development of Drosophila.
The International journal of developmental biology, 2020Co-Authors: Francesca Sarno, María Fernanda Ruiz, Lucas SánchezAbstract: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.
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Effect of the transformer-2 gene of Anastrepha on the somatic sexual development of Drosophila
The International Journal of Developmental Biology, 2020Co-Authors: Francesca Sarno, María Fernanda Ruiz, Lucas SánchezAbstract: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
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the gene transformer 2 of Anastrepha fruit flies diptera tephritidae and its evolution in insects
BMC Evolutionary Biology, 2010Co-Authors: Francesca Sarno, André L.p. Perondini, Denise Selivon, María Fernanda Ruiz, Jose M Eirinlopez, Lucas SánchezAbstract: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.
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Effect of the gene transformer of Anastrepha on the somatic sexual development of Drosophila.
The International Journal of Developmental Biology, 2010Co-Authors: María Fernanda Ruiz, Lucas SánchezAbstract:The gene transformer (tra) is the key regulatory memory device for sex determination in tephritid insects. The present manuscript addressed the question about the functional conservation of the tephritid Anastrepha Transformer protein to direct somatic sexual development in Drosophila (Drosophilidae). The transformer cDNA of Anastrepha encoding the putative full-length Tra protein was cloned in pUAST and introduced into Drosophila melanogaster. To express this protein, the GAL4-UAS system was used. The Anastrepha Tra protein induced the female-specific splicing of both dsx and fru pre-mRNAs in Drosophila XY male flies, so that these became transformed into females, though this transformation was incomplete (the sexually dimorphic foreleg basitarsus and the external terminalia were monitored). It was found that the degree of female transformation directly depended on the dose of Anastrepha tra and Drosophila transformer-2 (tra-2) genes, and that the Anastrepha Tra-Drosophila Tra2 complex is not as efficient as the Drosophila Tra-Tra2 complex at inducing the female-specific splicing of Drosophila dsx pre-mRNA. This can explain why the Anastrepha Tra protein cannot fully substitute for the endogenous Drosophila Tra protein.
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Effect of the gene doublesex of Anastrepha on the somatic sexual development of Drosophila.
PLOS ONE, 2009Co-Authors: Mercedes Alvarez, María Fernanda Ruiz, Lucas SánchezAbstract:Background The gene doublesex (dsx) is at the bottom of the sex determination genetic cascade and is transcribed in both sexes, but gives rise to two different proteins, DsxF and DsxM, which impose female and male sexual development respectively via the sex-specific regulation of the so-called sexual cyto-differentiation genes. The present manuscript addressed the question about the functional conservation of the tephritid Anastrepha DsxF and DsxM proteins to direct the sexual development in Drosophila (Drosophilidae). Methodology To express these proteins in Drosophila, the GAL4-UAS system was used. The effect of these proteins was monitored in the sexually dimorphic regions of the fly: the foreleg basitarsus, the 5th, 6th and 7th tergites, and the external terminalia. In addition, we analysed the effect of Anastrepha DsxF and DsxM proteins on the regulation of Drosophila yolk protein genes, which are expressed in the fat body of adult females under the control of dsx. Conclusions The Anastrepha DsxF and DsxM proteins transformed doublesex intersexual Drosophila flies into females and males respectively, though this transformation was incomplete and the extent of their influence varied in the different sexually dimorphic regions of the adult fly. The Anastrepha DsxF and DsxM proteins also behaved as activators and repressors, respectively, of the Drosophila yolk protein genes, as do the DsxF and DsxM proteins of Drosophila itself. Finally, the Anastrepha DsxF and DsxM proteins were found to counteract the functions of Drosophila DsxM and DsxF respectively, reflecting the normal behaviour of the latter proteins towards one another. Collectively, these results indicate that the Anastrepha DsxF and DsxM proteins show conserved female and male sex-determination function respectively in Drosophila, though it appears that they cannot fully substitute the latter's own Dsx proteins. This incomplete function might be partly due to a reduced capacity of the Anastrepha Dsx proteins to completely control the Drosophila sexual cyto-differentiation genes, a consequence of the accumulation of divergence between these species resulting in the formation of different co-adapted complexes between the Dsx proteins and their target genes.
Martin Aluja - One of the best experts on this subject based on the ideXlab platform.
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genetic variation in Anastrepha obliqua diptera tephritidae in a highly diverse tropical environment in the mexican state of veracruz
Journal of Economic Entomology, 2019Co-Authors: Martin Aluja, Bruce A Mcpheron, Raul Ruizarce, Mdsajedul IslamAbstract:: 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.
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A new species of Anastrepha (Diptera: Tephritidae) from Euphorbia tehuacana (Euphorbiaceae) in Mexico.
Zootaxa, 2014Co-Authors: Allen L Norrbom, Martin Aluja, Ana Lucia Castillo-meza, Juan Héctor García-chávez, Juan RullAbstract: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.
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understanding long term fruit fly diptera tephritidae population dynamics implications for areawide management
Journal of Economic Entomology, 2012Co-Authors: Martin Aluja, Larissa Guillen, Mariano Ordano, Juan RullAbstract: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...
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Anastrepha ludens and Anastrepha serpentina (Diptera: Tephritidae) do not Infest Psidium guajava (Myrtaceae), but Anastrepha obliqua Occasionally Shares this Resource with Anastrepha striata in Nature
Journal of Economic Entomology, 2011Co-Authors: Andrea Birke, Martin AlujaAbstract:ABSTRACT This study examined whether economically important fruit fly species Anastrepha ludens (Loew), Anastrepha serpentina (Wiedemann), and Anastrepha obliqua (Macquart) (Diptera: Tephritidae) may opportunistically exploit guavas, Psidium guajava L. (Myrtaceae), growing near preferred natural hosts. We collected 3,459 kg of guavas and 895 kg of other known host species [sour orange, Citrus aurantium L.; grapefruit, Citrus paradisi Macfadyen; mango, Mangifera indica L.; white sapote, Casimiroa edulis La Llave and Lex.; sapote, Pouteria sapota (Jacq.); sapodilla, Manilkara zapota L.; and wild plum, Spondias purpurea L. and Spondias mombin L.] along an altitudinal gradient over a 4-yr period (2006–2009). Plants were growing in sympatry in 23 localities where the guavas are usually infested in the state of Veracruz, Mexico. The guava samples yielded 20,341 Anastrepha spp. pupae in total (overall mean, 5.88 pupae per kg of fruit). Confirming previous reports, Anastrepha fraterculus (Wiedemann) and Anastreph...
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Effect of continuous rearing on courtship acoustics of five braconid parasitoids, candidates for augmentative biological control of Anastrepha species
BioControl, 2010Co-Authors: Andrea L. Joyce, Martin Aluja, John Sivinski, S. Bradleigh Vinson, Ricardo Ramirez-romero, Julio S. Bernal, Larissa GuillenAbstract:The courtship acoustics of five species of parasitoid wasps (Hymenoptera: Braconidae), potential candidates for augmentative biological control of Anastrepha (Schiner) species (Diptera: Tephritidae), were compared between recently colonized individuals and those continuously reared 70–148 generations. During courtship, males of these parasitoid species fan their wings and produce a series of low amplitude pulses. The first series of 15 or more continuous courtship pulses was used to measure the pulse duration, frequency, and interpulse interval (IPI) from the beginning, middle, and end of the pulse series. Each parameter was compared between young and old colonies, and among species. Several differences in courtship acoustics were detected in colonies that had been continuously reared. The pulse duration at the end of the pulse series was longer in old colonies for Doryctobracon crawfordi (Viereck) (Hymenoptera: Braconidae), but shorter for old colonies of Diachasmimorpha longicaudata (Ashmead) (Hymenoptera: Braconidae). The IPI of the middle pulse was shorter in old colonies of Opius hirtus (Fischer) (Hymenoptera: Braconidae), and was also shorter at the last pulse for old colonies of both Utetes Anastrephae (Viereck) (Hymenoptera: Braconidae) and D. longicaudata. The duration of the middle pulse distinguished the three native species, and separated the two introduced species from each other. We discuss our findings in light of their biological and applied implications, particularly those dealing with quality control of mass-reared parasitoids.
María Fernanda Ruiz - One of the best experts on this subject based on the ideXlab platform.
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Effect of the transformer-2 gene of Anastrepha on the somatic sexual development of Drosophila.
The International journal of developmental biology, 2020Co-Authors: Francesca Sarno, María Fernanda Ruiz, Lucas SánchezAbstract: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.
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Effect of the transformer-2 gene of Anastrepha on the somatic sexual development of Drosophila
The International Journal of Developmental Biology, 2020Co-Authors: Francesca Sarno, María Fernanda Ruiz, Lucas SánchezAbstract: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
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the gene transformer 2 of Anastrepha fruit flies diptera tephritidae and its evolution in insects
BMC Evolutionary Biology, 2010Co-Authors: Francesca Sarno, André L.p. Perondini, Denise Selivon, María Fernanda Ruiz, Jose M Eirinlopez, Lucas SánchezAbstract: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.
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Effect of the gene transformer of Anastrepha on the somatic sexual development of Drosophila.
The International Journal of Developmental Biology, 2010Co-Authors: María Fernanda Ruiz, Lucas SánchezAbstract:The gene transformer (tra) is the key regulatory memory device for sex determination in tephritid insects. The present manuscript addressed the question about the functional conservation of the tephritid Anastrepha Transformer protein to direct somatic sexual development in Drosophila (Drosophilidae). The transformer cDNA of Anastrepha encoding the putative full-length Tra protein was cloned in pUAST and introduced into Drosophila melanogaster. To express this protein, the GAL4-UAS system was used. The Anastrepha Tra protein induced the female-specific splicing of both dsx and fru pre-mRNAs in Drosophila XY male flies, so that these became transformed into females, though this transformation was incomplete (the sexually dimorphic foreleg basitarsus and the external terminalia were monitored). It was found that the degree of female transformation directly depended on the dose of Anastrepha tra and Drosophila transformer-2 (tra-2) genes, and that the Anastrepha Tra-Drosophila Tra2 complex is not as efficient as the Drosophila Tra-Tra2 complex at inducing the female-specific splicing of Drosophila dsx pre-mRNA. This can explain why the Anastrepha Tra protein cannot fully substitute for the endogenous Drosophila Tra protein.
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Effect of the gene doublesex of Anastrepha on the somatic sexual development of Drosophila.
PLOS ONE, 2009Co-Authors: Mercedes Alvarez, María Fernanda Ruiz, Lucas SánchezAbstract:Background The gene doublesex (dsx) is at the bottom of the sex determination genetic cascade and is transcribed in both sexes, but gives rise to two different proteins, DsxF and DsxM, which impose female and male sexual development respectively via the sex-specific regulation of the so-called sexual cyto-differentiation genes. The present manuscript addressed the question about the functional conservation of the tephritid Anastrepha DsxF and DsxM proteins to direct the sexual development in Drosophila (Drosophilidae). Methodology To express these proteins in Drosophila, the GAL4-UAS system was used. The effect of these proteins was monitored in the sexually dimorphic regions of the fly: the foreleg basitarsus, the 5th, 6th and 7th tergites, and the external terminalia. In addition, we analysed the effect of Anastrepha DsxF and DsxM proteins on the regulation of Drosophila yolk protein genes, which are expressed in the fat body of adult females under the control of dsx. Conclusions The Anastrepha DsxF and DsxM proteins transformed doublesex intersexual Drosophila flies into females and males respectively, though this transformation was incomplete and the extent of their influence varied in the different sexually dimorphic regions of the adult fly. The Anastrepha DsxF and DsxM proteins also behaved as activators and repressors, respectively, of the Drosophila yolk protein genes, as do the DsxF and DsxM proteins of Drosophila itself. Finally, the Anastrepha DsxF and DsxM proteins were found to counteract the functions of Drosophila DsxM and DsxF respectively, reflecting the normal behaviour of the latter proteins towards one another. Collectively, these results indicate that the Anastrepha DsxF and DsxM proteins show conserved female and male sex-determination function respectively in Drosophila, though it appears that they cannot fully substitute the latter's own Dsx proteins. This incomplete function might be partly due to a reduced capacity of the Anastrepha Dsx proteins to completely control the Drosophila sexual cyto-differentiation genes, a consequence of the accumulation of divergence between these species resulting in the formation of different co-adapted complexes between the Dsx proteins and their target genes.
Denise Selivon - One of the best experts on this subject based on the ideXlab platform.
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Karyotype relationships among Anastrepha bistrigata, A. striata and A. serpentina (Diptera, Tephritidae)
Genetics and Molecular Biology, 2020Co-Authors: Denise Selivon, Fabiana Maria Sipula, Lincoln S. Rocha, André L.p. PerondiniAbstract:The species of Anastrepha are arranged into 17 intrageneric groups. Recently, it was proposed that two species of the striata group, Anastrepha striata and A. bistrigata, might be realocated to serpentina group. Anastrepha bistrigata and A. serpentina have an X1X2Y/X1X1 X2X2 sex chromosome system while A. striata has a XY/XX system. It was previously proposed that the karyotype of A. bistrigata could be derived from that of A. striata by an Y:A fusion, and that the karyotype of A. serpentina would be derived from another, hypothetical karyotype. In the present report sequential staining with DAPI and chromomycin A3 (CMA3), followed by C-banding, revealed that the C-banded heterochromatic blocks of the sex chromosomes of A. bistrigata have different affinities to fluorochromes in comparison to the chromosomes of A. striata, from which they have hypothetically derived. The chromosomes of A. serpentina show substantial differences in their cytochemical properties compared to their A. bistrigata and A. striata counterparts. The FISH technique showed that the ribosomal gene sequences are located in DAPI- or DAPI/CMA3-positive heterochromatic blocks of the sex chromosomes, one site on the Y chromosome and one site on the X chromosome (X1 in A. bistrigata and A. serpentina). The data suggest that the karyotype of A. striata and A. bistrigata could be derived from a common ancestral karyotype, while the A. serpentina karyotype probably has a distinct origin.
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Patterns of inner chorion structure in Anastrepha (Diptera: Tephritidae) eggs.
Arthropod Structure & Development, 2016Co-Authors: Julia V. A. Figueiredo, André L.p. Perondini, Denise SelivonAbstract:Abstract The inner chorion structure of Anastrepha eggs from 16 species of various infrageneric taxonomic groups is described by scanning and transmission electron microscopy. The layers of the chorion, the outer egg membrane, are structurally similar. Furthermore, an additional trabecular layer (ATL) that exists in some species, together with other characteristics, facilitates the recognition of four patterns of chorion structuring: Pattern I, in which the ATL layer is absent, is found in Anastrepha amita , the Anastrepha fraterculus complex, Anastrepha obliqua , Anastrepha sororcula , Anastrepha suspensa and Anastrepha zenildae ( fraterculus group), and Anastrepha bistrigata and Anastrepha striata ( striata group); Pattern II in Anastrepha serpentina ( serpentina group), Anastrepha grandis ( grandis group) and Anastrepha pseudoparallela ( pseudoparallela group), in which the ATL presents large open spaces with pillars; Pattern III, found in Anastrepha consobrina ( pseudoparallela group), in which the ATL is composed of round cavities; and Pattern IV, found in Anastrepha alveata and Anastrepha pickeli ( spatulata group), where the large ATL cavities are reticulated. Comparatively, the chorion structure in Anastrepha eggs is more complex than in eggs of other fruit flies, e.g., Bactrocera , Rhagoletis and Ceratitis .
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Wolbachia in guilds of Anastrepha fruit flies (Tephritidae) and parasitoid wasps (Braconidae)
Genetics and Molecular Biology, 2016Co-Authors: Rodrigo O. Mascarenhas, André L.p. Perondini, Leandro F. Prezotto, Celso Luiz Marino, Denise SelivonAbstract:The endosymbiont Wolbachia is efficiently transmitted from females to their progenies, but horizontal transmission between different taxa is also known to occur. Aiming to determine if horizontal transmission might have occurred between Anastrepha fruit flies and associated braconid wasps, infection by Wolbachia was screened by amplification of a fragment of the wsp gene. Eight species of the genus Anastrepha were analyzed, from which six species of associated parasitoid wasps were recovered. The endosymbiont was found in seven Anastrepha species and in five species of braconids. The WSP Typing methodology detected eight wsp alleles belonging to Wolbachia supergroup A. Three were already known and five were new ones, among which four were found to be putative recombinant haplotypes. Two samples of Anastrepha obliqua and one sample of Doryctobracon brasiliensis showed multiple infection. Single infection by Wolbachia was found in the majority of samples. The distribution of Wolbachia harboring distinct alleles differed significantly between fruit flies and wasps. However, in nine samples of fruit flies and associated wasps, Wolbachia harbored the same wsp allele. These congruences suggest that horizontal transfer of Wolbachia might have occurred in the communities of fruit flies and their braconid parasitoids.
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morphometric study of third instar larvae from five morphotypes of the Anastrepha fraterculus cryptic species complex diptera tephritidae
ZooKeys, 2015Co-Authors: Nelson A. Canal, Vicente Hernandezortiz, Juan Tigrero O Salas, Denise SelivonAbstract:The occurrence of cryptic species among economically important fruit flies strongly affects the development of management tactics for these pests. Tools for studying cryptic species not only facilitate evolutionary and systematic studies, but they also provide support for fruit fly management and quarantine activities. Previous studies have shown that the South American fruit fly, Anastrepha fraterculus, is a complex of cryptic species, but few studies have been performed on the morphology of its immature stages. An analysis of mandible shape and linear morphometric variability was applied to third-instar larvae of five morphotypes of the Anastrepha fraterculus complex: Mexican, Andean, Ecuadorian, Peruvian and Brazilian-1. Outline geometric morphometry was used to study the mouth hook shape and linear morphometry analysis was performed using 24 linear measurements of the body, cephalopharyngeal skeleton, mouth hook and hypopharyngeal sclerite. Different morphotypes were grouped accurately using canonical discriminant analyses of both the geometric and linear morphometry. The shape of the mandible differed among the morphotypes, and the anterior spiracle length, number of tubules of the anterior spiracle, length and height of the mouth hook and length of the cephalopharyngeal skeleton were the most significant variables in the linear morphometric analysis. Third-instar larvae provide useful characters for studies of cryptic species in the Anastrepha fraterculus complex.
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External eggshell morphology of Anastrepha fruit flies (Diptera: Tephritidae)
Acta Zoologica, 2011Co-Authors: Julia V. A. Figueiredo, André L.p. Perondini, Eliana M. Ruggiro, Leandro F. Prezotto, Denise SelivonAbstract:Figueiredo J.V.A., Perondini A.L.P., Ruggiro EM., Prezotto LF. and Selivon D. (2011). External eggshell morphology of Anastrepha fruit flies (Diptera: Tephritidae). —Acta Zoologica (Stockholm) 00:1–9. The eggshell external morphology of Anastrepha species of different taxonomic intrageneric groups was determined by light and scanning electron microscopy. The eggs of Anastrepha alveata Stone and A. consobrina (Loew) are described for the first time, and a more detailed description of previously studied eggs from A. amita Zucchi, A. pickeli Lima, A. bistrigata Bezzi, A. grandis (Macquart), A. obliqua (Macquart), A. pseudoparallela (Loew), A. striata Schiner, A. suspensa (Loew), and A. zenildae Zucchi is presented. Several relatively plastic morphological characters of the eggs were discerned, such as length, width, tapering, curvature, chorion ornamentation, respiratory lobes, and position of the micropyle. Scores were attributed to these characters, allowing a comparison of egg morphology among 17 species of Anastrepha. A cluster analysis based on these scores did not group the eggs according to the taxonomic intrageneric groups of the species. Nonetheless, this analysis indicated that the egg of each species can be described by a set of morphological scores. The possibility of species identificaton using immature stages will be of great help for the taxonomy of Anastrepha fruit flies.
Roberto A. Zucchi - One of the best experts on this subject based on the ideXlab platform.
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Host plant record for the fruit flies, Anastrepha fumipennis and A. nascimentoi (Diptera, Tephritidae).
Journal of Insect Science, 2020Co-Authors: Keiko Uramoto, David Martins, Rita De Cássia Antunes Lima, Roberto A. ZucchiAbstract:The first host plant record for Anastrepha fumipennis Lima (Diptera: Tephritidae) in Geissospermum laeve (Vell.) Baill (Apocynaceae) and for A. nascimentoi Zucchi found in Cathedra bahiensis Sleumer (Olacaceae) was determined in a host plant survey of fruit flies undertaken at the “Reserva Natural da Companhia Vale do Rio Doce”. This reserve is located in an Atlantic Rain Forest remnant area, in Linhares county, state of Espirito Santo, Brazil. The phylogenetic relationships of Anastrepha species and their hosts are discussed. The occurrence of these fruit fly species in relation to the distribution range of their host plants is also discussed.
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First record of Anastrepha parishi Stone (Diptera, Tephritidae) and its host in Brazil
Revista Brasileira De Entomologia, 2020Co-Authors: C. R. Jesus, M. N. Oliveira, Ricardo Adaime Da Silva, Miguel Francisco De Souza Filho, Roberto A. ZucchiAbstract:First record of Anastrepha parishi Stone (Diptera, Tephritidae) and its host in Brazil. Anastrepha parishi Stone, 1942 was reared in fruits of Oenocarpus bacaba Martius, 1823 (Arecaceae) collected in Pracuuba, State of Amapa. This is the first record of an Anastrepha species in a native species of Arecaceae.
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synonymy of toxotrypana gerstaecker with Anastrepha schiner diptera tephritidae
Proceedings of the Entomological Society of Washington, 2018Co-Authors: Allen L Norrbom, Peter H. Kerr, Norma Nolazco, Norman B. Barr, Ximo Mengual, Erick J Rodriguez, Gary J Steck, Bruce D Sutton, Keiko Uramoto, Roberto A. ZucchiAbstract:Based on a recent phylogenetic analysis, Toxotrypana Gerstaecker (1860) is here placed in synonymy with Anastrepha Schiner (1868). Although Toxotrypana is the senior name, Anastrepha is recognized as valid because of the much greater economic significance of its species. Changing the names of the many pest species of Anastrepha would cause major nomenclatural instability and confusion in the applied literature, therefore a proposal to the International Commission on Zoological Nomenclature has been submitted to validate this usage. The following nomenclatural changes are proposed: Anastrepha australis (Blanchard 1960), new combination, Anastrepha curvicauda (Gerstaecker 1860), new combination, Anastrepha littoralis (Blanchard 1960), new combination, Anastrepha nigra (Blanchard 1960), new combination, Anastrepha picciola (Blanchard 1960), new combination, Anastrepha proseni (Blanchard 1960), new combination, Anastrepha recurcauda (Tigrero 1992), new combination (all transferred from Toxotrypana), and Anastrepha nigrina Norrbom, new name for Anastrepha nigra Norrbom and Korytkowski (2009). Some changes to the species group classification within Anastrepha are also discussed.
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Composition of Anastrepha species (Diptera: Tephritidae) in habitats with different levels of anthropogenic activity
Biotemas, 2017Co-Authors: Monique Barbara Rosa Oliveira, Miguel Francisco De Souza Filho, Keiko Uramoto, Elisangela Ferreira, Carolina Reigada, Gleidyane Novais Lopes, Leandro José Uchôa Lemos, Roberto A. ZucchiAbstract:We collected Anastrepha species in three areas (urban, research station, agricultural) and compared communities by faunal indices (dominance, abundance, frequency, and constancy). Species diversity was estimated using the Q-statistic and by calculating Shannon, Margalef Pielou and Berger-Parker indices. Similarity among areas was based on Sorensen and Bray-Curtis coefficients. The urban and research station areas presented greater diversity and similarity of Anastrepha species. Species composition differed between areas, with predominance of A. fraterculus (Wiedemann, 1830) in the three areas. Distribution patterns did not differ after adjusting the geometric series. The agricultural area was the least diverse and more closely resembled the urban area in terms of abundance. The urban area and research station were the most diverse, and were similar in composition of Anastrepha species. Despite being subject to different levels of human disturbance, these results suggest that the abundance and distribution pattern of Anastrepha species are similar in all three areas.
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Redescription, lectotype designation and new records of Anastrepha luederwaldti Lima (Diptera, Tephritidae)
Zootaxa, 2016Co-Authors: Keiko Uramoto, Allen L Norrbom, Roberto A. ZucchiAbstract:The previously poorly known species Anastrepha luederwaldti Lima, 1934 is redescribed based on a reexamination of the syntypes from Sao Paulo and additional specimens from Santa Catarina and Rio Grande do Sul, Brazil. A lectotype is designated.
