Percepção química e visual de Anastrepha fraterculus (Diptera, Tephritidae) em laboratório

Gregório, Patrícia Luciane Fernandes; Sant’Ana, Josué

doi:10.1590/s0073-47212010000200007

Cited by 10 publications

(9 citation statements)

References 21 publications

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“…A female's decision to accept or reject a plant is influenced by physical and chemical characteristics of the likely host, but physical characteristics are usually not specific and can vary even within the same species (Bernays & Chapman, ). This information corroborates observations that substrate color did not affect the mean number of eggs deposited by A. fraterculus (Gregório et al., ). Chemical compounds in the host plant seem to be the determining factor that allow females to detect differences and provide information about the phenological stage, nutritional status, and presence of defense substances of plants (Jones, ; Bernays & Chapman, ; Schoonhoven et al., ).…”

Section: Discussionsupporting

confidence: 91%

Behavioral analysis of learning and memory in Anastrepha fraterculus

Gregório

Sant’Ana

Pires

2015

Entomologia Exp Applicata

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We evaluate the influence of prior exposure to artificial substrate for oviposition on learning and memory in the fruit fly Anastrepha fraterculus (Wiedemann) (Diptera: Tephritidae). Some females were previously exposed to artificial fruits made of water, agar, and blackberry [Rubus spec. (Rosaceae)] or guava [Psidium guajava L. (Myrtaceae)] pulp for 48 and 72 h. We also studied adult flies exposed for 72 h to essential oil of lemongrass [Cymbopogon citratus (DC) Stapf, Poaceae] and adult flies from larvae exposed to the oil. Control females were naive with respect to these experimental substrates. Prior experience with blackberry‐based artificial fruits resulted in an increase in the number of punctures and deposited eggs by A. fraterculus, and memory lasted for up to 72 h. On the other hand, fly behavior was independent of exposure to guava‐based substrate. Prior exposure of 1‐ or 15‐day‐old females to artificial substrate with lemongrass oil modified innate substrate selection behavior. The scent of lemongrass oil during the larval stage modified innate oviposition responses of adult A. fraterculus. The study shows that A. fraterculus females are able to learn and retain information through chemical stimuli released by both host (blackberry and guava) and non‐host (lemongrass) species, and they can use olfactory memory obtained during the larval stage to select oviposition sites.

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Section: Discussionsupporting

confidence: 91%

Behavioral analysis of learning and memory in Anastrepha fraterculus

Gregório

Sant’Ana

Pires

2015

Entomologia Exp Applicata

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“…Despite the similar number of OBPs and their sequences, there is significant difference between OBPs of A. obliqua and A. fraterculus that may reflect specific adaptation. A wind tunnel test revealed that A. fraterculus antennae were responsive to Myrtaceae extracts, which also affected its oviposition rate [ 85 ]. On the other hand, adults of A. obliqua were attracted to Anacardiaceae ripe fruits [ 86 , 87 ], so much so that at least nine volatile compounds from the Anacardiaceae Spondias mombin elicited antennal response from both sexes of this species [ 86 ].…”

Section: Resultsmentioning

confidence: 99%

Molecular evolution of Odorant-binding proteins gene family in two closely related Anastrepha fruit flies

Campanini

Brito

2016

BMC Evol Biol

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BackgroundOdorant-binding proteins (OBPs) are of great importance for survival and reproduction since they participate in initial steps of the olfactory signal transduction cascade, solubilizing and transporting chemical signals to the olfactory receptors. A comparative analysis of OBPs between closely related species may help explain how these genes evolve and are maintained under natural selection and how differences in these proteins can affect olfactory responses. We studied OBP genes in the closely related species Anastrepha fraterculus and A. obliqua, which have different host preferences, using data from RNA-seq cDNA libraries of head and reproductive tissues from male and female adults, aiming to understand the speciation process occurred between them.ResultsWe identified 23 different OBP sequences from Anastrepha fraterculus and 24 from A. obliqua, which correspond to 20 Drosophila melanogaster OBP genes. Phylogenetic analysis separated Anastrepha OBPs sequences in four branches that represent four subfamilies: classic, minus-C, plus-C and dimer. Both species showed five plus-C members, which is the biggest number found in tephritids until now. We found evidence of positive selection in four genes and at least one duplication event that preceded the speciation of these two species. Inferences on tertiary structures of putative proteins from these genes revealed that at least one positively selected change involves the binding cavity (the odorant binding region) in the plus-C OBP50a.Conclusions A. fraterculus and A. obliqua have a bigger OBP repertoire than the other tephritids studied, though the total number of Anastrepha OBPs may be larger, since we studied only a limited number of tissues. The contrast of these closely related species reveals that there are several amino acid changes between the homologous genes, which might be related to their host preferences. The plus-C OBP that has one amino acid under positive selection located in the binding cavity may be under a selection pressure to recognize and bind a new odorant. The other positively selected sites found may be involved in important structural and functional changes, especially ones in which site-specific changes would radically change amino acid properties.Electronic supplementary materialThe online version of this article (doi:10.1186/s12862-016-0775-0) contains supplementary material, which is available to authorized users.

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“…Mangas semimaduras ou maduras foram preferidas por adultos de Bactrocera dorsalis (Hendel, 1912), em relação às verdes, em função da coloração mais atrativa (Rattanapun et al 2009). Entretanto, a coloração não foi importante na escolha do substrato para oviposição de A. fraterculus e, sim, as características físico-químicas (Gregorio et al 2010). No entanto, devemos considerar que, em condições de campo, essas condições ocorrem de forma simultânea.…”

Section: Resultsunclassified

Danos de moscas-das-frutas (Diptera, Tephritidae) em citros, manejados no sistema orgânico de produção

2014

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Danos de moscas-das-frutas (Diptera, Tephritidae) em citros, manejados no sistema orgânico de produçãoAs moscas-das-frutas são as principais pragas da fruticultura mundial. Consideradas chaves para a produção de citros, torna-se necessário o seu monitoramento, visando a evitar os danos diretos. O experimento teve como objetivos conhecer a variação populacional de Anastrepha fraterculus e a relação de sua população com danos em pomares orgânicos de Citrus sinensis, cultivar Céu e de C. sinensis x Citrus reticulata tangor 'Murcott'. Os dados foram coletados em 2003 e 2004 durante o período de maturação dos frutos, na região do vale do Caí, RS, Brasil. O número de moscas-das-frutas foi registrado, semanalmente, por meio de armadilhas McPhail, contendo suco de uva, a 25%. Danos aos frutos foram determinados pela razão entre frutos sadios e frutos danificados pela mosca. Registros meteorológicos de temperatura, umidade relativa e precipitação pluviométrica foram obtidos, em estação meteorológica distante 30 km das áreas experimentais. Verificou-se que, em condições ideais de precipitação pluvial, maiores foram as populações de A. fraterculus, espécie predominante na região. A população estimada capaz de causar danos aos frutos variou de acordo com o cultivar, sendo a laranjeira 'Céu' a mais susceptível. Os maiores picos populacionais ocorrem na fase de mudança de coloração dos frutos. Porém, na fase de maturação, as moscas causaram os maiores danos, dada a intolerância dos frutos ao ataque. Conclui-se que a infestação dos frutos de citros por A. fraterculus está relacionada com espécie e cultivar e com fatores climáticos, principalmente com a precipitação pluvial. O monitoramento constante da população de mosca-das-frutas é importante na determinação da infestação na colheita. Palavras-chave:Anastrepha fraterculus, monitoramento, dados meteorológicos, agricultura orgânica, danos aos frutos de citros.

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Percepção química e visual de Anastrepha fraterculus (Diptera, Tephritidae) em laboratório

Cited by 10 publications

References 21 publications

Behavioral analysis of learning and memory in Anastrepha fraterculus

Behavioral analysis of learning and memory in Anastrepha fraterculus

Molecular evolution of Odorant-binding proteins gene family in two closely related Anastrepha fruit flies

Danos de moscas-das-frutas (Diptera, Tephritidae) em citros, manejados no sistema orgânico de produção

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