Olfactory Responses of<i>Anastrepha obliqua</i>(Diptera: Tephritidae) to Volatiles Emitted by Calling Males

López-Guillén, Guillermo; López, Leopoldo Cruz; Malo, Edi A.; Rojas, Julio C.

doi:10.1653/024.094.0423

Cited by 21 publications

(26 citation statements)

References 18 publications

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“…The results provide strong evidence that the volatile blend released by calling males of A. fraterculus includes components acting as female attractants. These findings are in agreement with previously published studies on A. suspensa, A. obliqua, and A. serpentina, which show that females of these species are attracted to headspace extracts of conspecific calling males (López-Guillén et al 2011;Nation 1975;Robacker et al 2009). By using the GC-EAD technique, we were able to determine the compounds of the complex blend that are potentially involved in the attraction of females.…”

Section: Discussionsupporting

confidence: 93%

“…However, it only triggered behavioral responses when offered in combination with either (Z,Z)-3,6-nonadien-1-ol or (Z)-3-nonen-1-ol (Robacker 1988). The observed synergistic activity of compounds might play a crucial role as reproductive barrier among Anastrepha species, since the volatiles released by males of phylogenetically related species are quite similar (López-Guillén et al 2011). Thus, specific combinations of compounds, rather than individual components might mediate intraspecific and interspecific recognition unambiguously.…”

Section: Discussionmentioning

confidence: 95%

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Identification of male-borne attractants in Anastrepha fraterculus (Diptera: Tephritidae)

et al. 2014

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The South American fruit fly is one of the most destructive polyphagous pests in South America. In this species, males gathered in aggregations emit volatiles that attract females; however, the compounds involved in this task remain unknown. In this study, we investigated the chemical composition of the volatile blend emitted by males aiming to identify the specific compounds within this blend that elicit behavioral responses in conspecific females. For this purpose, we performed chemical and electrophysiological analyses and bioassays. The chemical analyses revealed the presence of 29 compounds in headspace samples of A. fraterculus males, of which six compounds, i.e. a-pinene, limonene, (Z)-3-nonen-1-ol, (E,Z)-3,6-nonadien-1-ol, a-farnesene and (S,S)-(-)-epianastrephin, triggered antennal depolarization in conspecific females. In laboratory bioassays, five out of eight synthetic compounds tested individually elicited more behavioral responses than a hexane control, but only the synthetic mixture composed of all EAD-active compounds triggered behavioral responses in females similar to the responses to the headspace samples of conspecific males. In an experiment under semi-natural conditions, the synthetic mixture was more attractive to females than a hexane control and equally attractive to headspace extracts of males. This study reports the identification of male volatile compounds that act as attractant for A. fraterculus females, which may be useful for the control of this pest in infested orchards.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 95%

Identification of male-borne attractants in Anastrepha fraterculus (Diptera: Tephritidae)

et al. 2014

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“…Although the aim of Milet-Pinheiro et al (2014) research was to find potent female attractants, the same methodology can be applied to evaluate the role of pheromones in mate recognition of closely related species. Similar attractiveness of volatile extracts of calling males and live calling males was reported also by López-Guillén et al (2011) who found that the number of Anastrepha obliqua females captured by traps with volatile extracts of calling males was not significantly different to that caught by live calling males. However, to substitute the natural blend trapped from calling males with synthetics, it is necessary to have access to synthetic compounds (which may not be commercially available and its synthesis may be quite expensive) and to assess technological problems associated with dispenser type(s) that guarantee the pheromone release in comparable concentration and compound ratios like naturally calling males.…”

Section: The Role Of Pheromones In Species Recognitionsupporting

confidence: 84%

“…This protocol has the advantage that it can provide information on both relatively long and close distance recognition. Several examples of the use of walk-in field cages to assess tephritid attraction to different odor sources can be found in the literature (Webb et al 1983, Shelly 2000a, 2000b, López-Guillén et al 2011, Liendo et al 2013, Milet-Pinheiro et al 2014). However, the usefulness of walk-in field cages to assess preference of female flies for pheromones of con-specific vs hetero-specific males has not been evaluated yet.…”

Section: The Role Of Pheromones In Species Recognitionmentioning

confidence: 99%

Evaluating mating compatibility within fruit fly cryptic species complexes and the potential role of sex pheromones in pre-mating isolation

Juárez¹,

Devescovi²,

Břízová³

et al. 2015

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The study of sexual behavior and the identification of the signals involved in mate recognition between con-specifics are key components that can shed some light, as part of an integrative taxonomic approach, in delimitating species within species complexes. In the Tephritidae family several species complexes have received particular attention as they include important agricultural pests such as the Ceratitis fasciventris (Bezzi), Ceratitis anonae (Graham) and Ceratitis rosa Karsch (FAR) complex, the Bactrocera dorsalis (Hendel) complex and the Anastrepha fraterculus (Wiedemann) complex. Here the value and usefulness of a methodology that uses walk-in field cages with host trees to assess, under semi-natural conditions, mating compatibility within these complexes is reviewed, and the same methodology to study the role of chemical communication in pre-mating isolation among Anastrepha fraterculus populations is used. Results showed that under the same experimental conditions it was possible to distinguish an entire range of different outcomes: from full mating compatibility among some populations to complete assortative mating among others. The effectiveness of the methodology in contributing to defining species limits was shown in two species complexes: Anastrepha fraterculus and Bactrocera dorsalis, and in the case of the latter the synonymization of several established species was published. We conclude that walk-in field cages constitute a powerful tool to measure mating compatibility, which is also useful to determine the role of chemical signals in species recognition. Overall, this experimental approach provides a good source of information about reproductive boundaries to delimit species. However, it needs to be applied as part of an integrative taxonomic approach that simultaneously assesses cytogenetic, molecular, physiological and morphological traits in order to reach more robust species delimitations.

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“…Sexual pheromone components shared between Anastrepha obliqua and A. fraterculus based on literature reports (Ibañez‐López & Cruz‐López, ; Lima et al ., ; Santos, ; López‐Guillén et al ., ; López‐Guillén et al ., ; Brizová et al ., ; Goncalves et al ., ; Bachman et al ., ; Milet‐Pinheiro et al ., ). For further details, see Table S1.…”

Section: Introductionmentioning

confidence: 99%

Experimental hybridization and reproductive isolation between two sympatric species of tephritid fruit flies in the Anastrepha fraterculus species group

et al. 2017

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Among tephritid fruit flies, hybridization has been found to produce local adaptation and speciation, and in the case of pest species, induce behavioral and ecological alterations that can adversely impact efficient pest management. The fraterculus species group within Anastrepha (Diptera: Tephritidae), is a rapidly radiating aggregate, which includes cryptic species complexes, numerous sister species, and several pest species. Molecular studies have highlighted the possibility of introgression between A. fraterculus and A. obliqua. Reproductive isolation has been studied among morphotypes of the A. fraterculus species complex as a tool for species delimitation. Here we examined the existence and strength of prezygotic and postzygotic isolation between sympatric populations of two closely related species within the highly derived fraterculus group (A. fraterculus and A. obliqua), coexisting in nature. Although adults of both species showed a strong tendency for assortative mating, a small proportion of hybrid pairings in both directions were observed. We also observed asymmetric postzygotic isolation, with one hybrid cross displaying a strong reduction in fecundity and F1 egg fertility. Survival was greater for the progeny of homotypic and hybrid crosses in the maternal host. There was a marked female biased sex ratio distortion for both F1 hybrid adults. Hybridization between A. fraterculus and A. obliqua in nature may be difficult but possible; these two species display stronger reproductive isolation than all pairs of species previously examined in the A. fraterculus species complex. Asymmetric postzygotic isolation is suggestive of Wolbachia mediated cytoplasmic incompatibilities that may be exploited in area-wide pest management.

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Olfactory Responses ofAnastrepha obliqua(Diptera: Tephritidae) to Volatiles Emitted by Calling Males

Cited by 21 publications

References 18 publications

Identification of male-borne attractants in Anastrepha fraterculus (Diptera: Tephritidae)

Identification of male-borne attractants in Anastrepha fraterculus (Diptera: Tephritidae)

Evaluating mating compatibility within fruit fly cryptic species complexes and the potential role of sex pheromones in pre-mating isolation

Experimental hybridization and reproductive isolation between two sympatric species of tephritid fruit flies in the Anastrepha fraterculus species group

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