Sex Pheromone of the Spanish Population of the Beet Armyworm Spodoptera exigua

Acín, Patricia; Rosell, Glòria; Guerrero, Ángel; Quero, Carmen

doi:10.1007/s10886-010-9817-z

Cited by 26 publications

(31 citation statements)

References 16 publications

(27 reference statements)

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“…The antagonistic effect of high doses of (Z)9-14:OAc, the other ligand of SlitOR13, observed in field trapping studies (Campion et al, 1980) lends further support to this model. In nature, this precise detection of high doses of (Z,E)-9,12-14:OAc by S. littoralis males may constitute a mechanism to avoid interbreeding with the sympatric species S. exigua, whose sex pheromone contains high amounts of (Z,E)-9,12-14:OAc (Acin et al, 2010).…”

Section: Discussionmentioning

confidence: 98%

Evolution of two receptors detecting the same pheromone compound in crop pest moths of the genus Spodoptera

et al. 2015

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In moths, mate finding strongly rely on the detection of sex pheromones by pheromone receptors (PRs). Any modification in the functional properties of these receptors can have a drastic impact on reproduction. In the course of characterizing candidate PRs in the noctuid moth Spodoptera littoralis, we expressed them in Drosophila olfactory sensory neurons and stimulated them with a large panel of moth pheromone compounds. We found that two PRs detect (Z,E)-9,12-14:OAc, a minor component of the female pheromone blend. Whereas SlitOR6 is highly specific to this component, SlitOR13 is less sensitive and not strictly specific as it also detects (Z)9-14:OAc, another minor component of the sex pheromone. Interestingly, SlitOR13 expression is restricted to the distal part of male antennae, where we could identify a novel functional class of pheromone-sensitive neurons whose response spectrum matches that of SlitOR13. Based on a phylogenetic analysis of Lepidoptera PRs, we found that the ability to bind (Z,E)-9,12-14:OAc appeared independently within three paralogous lineages, and an analysis of selective pressures revealed sites under positive selection that could have played a role in the emergence of functional properties of OR6 and OR13 in Spodoptera species.

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Section: Discussionmentioning

confidence: 98%

Evolution of two receptors detecting the same pheromone compound in crop pest moths of the genus Spodoptera

et al. 2015

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“…These two components have been identified in SPME collections and solvent extracts, but their relative ratios are markedly different from each other. Differences in pheromone composition between gland extracts and female volatiles have been reported from other moths, including Sesia apiformis (Francke et al, 2004), Marmara gulosa (McElfresh et al, 2009), and Spodoptera exigua (Acín et al, 2010), showing that this discrepancy is usual in the Lepidoptera. The considerable variability in relative ratio and small amount of Z3-12:OAc and Z5-12:OAc recovered from SPME samples may be attributable to the degradation and/or adsorption of acetate components by the moth bodies, the loose scales, and adsorption to the walls of the container during overnight collections, as observed in other moths (Baker et al, 1980;Millar and Rice, 1992).…”

Section: Discussionmentioning

confidence: 81%

Female Sex Pheromone of the Gelechiid Moth Scrobipalpa salinella (Zeller)

et al. 2011

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The sex pheromone system of Scrobipalpa salinella (Zeller), an important pest of the halophyte Salicornia europaea in the tidal salt marshes, was studied. Z3-12:OAc and Z5-12:OAc were identified from both female pheromone glands and female emissions, but in quite different ratios. Field trapping tests demonstrated that Z3-12:OAc and Z5-12:OAc are essential for optimal attraction of male moths, and a 100:5 blend found in gland extracts is significantly more attractive to males than a 100:50 ratio similar to that found in SPME samples. Small amounts of E3-12:OAc and Z5-14:OAc also were present in pheromone gland extracts. A blend of E3-12:OAc with Z3-12:OAc attracted a few males, but was not as attractive as the binary blend of Z3-12:OAc and Z5-12:OAc. Moreover, addition of E3-12:OAc did not affect captures of males to the primary binary blend. Another glandular component, Z5-14:OAc, had no behavioral activity in field bioassays. Therefore, a synthetic mixture of Z3-12:OAc and Z5-12:OAc in a 100:5 ratio can be used as an effective tool for monitoring and control of this species.

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“…These compounds are also found in several other species from different families (Ando et al, 2004;Acín et al, 2010;Ma et al, 2014). In addition, five other compounds were tentatively identified as methyl tetradecanoate, octadecane, hexadecan-1-ol, heptadecan-1-ol and docosane.…”

Section: Resultsmentioning

confidence: 87%

Identification and field evaluation of the sex pheromone of a Brazilian population of Spodoptera cosmioides

Blassioli‐Moraes

Borges

Viana

et al. 2016

Pesq. agropec. bras.

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-The objective of this work was to identify the sex pheromone of Spodoptera cosmioides and to evaluate whether there is pheromone cross-attraction in Spodoptera sp. (Lepidoptera: Noctuidae). Spodoptera cosmioides gland extracts were analyzed by GC-FID and GC-MS. Wind tunnel and electrophysiology experiments were conducted to evaluate the role of gland compounds. In the field, different pheromone traps were tested: S. frugiperda commercial lure; (9Z)-9-tetradecenyl acetate (Z9-14:OAc) and (9Z,12E)-9,12-tetradecadienyl acetate (Z9,E12-14:OAc) trap; two females of S. cosmioides trap; and hexane control trap. Four acetates were identified in the S. cosmioides female gland extracts as Z9-14:OAc, Z9,E12-14:OAc, (11Z)-11-hexadecenyl acetate (Z11-16:OAc) and hexadecyl acetate (16:OAc), but only the first two acetates induced electrophysiological responses from S. cosmioides male antennae. In wind tunnel experiments, S. cosmioides and S. frugiperda males responded more strongly to conspecific blends; however, there was some cross-attraction, as 47% males of S. frugiperda and 25% males of S. cosmioides responded to heterospecific blends. In field experiments, S. frugiperda and S. cosmioides showed the same response pattern as observed in the wind tunnel bioassays. In summary, the sex pheromone components of S. cosmioides are Z9-14:OAc and Z9,E12-14OAc; they are important for conferring species specificity, and there is pheromone-mediated cross attraction between S. frugiperda and S. cosmioides.Index terms: (9Z)-9-tetradecenyl acetate, (9Z,12E)-9,12-tetradecadienyl acetate, cross-attraction, electrophysiology, pest monitoring, pheromone traps. Identificação e avaliação em campo do feromônio sexual de uma população brasileira de Spodoptera cosmioidesResumo -O objetivo deste trabalho foi identificar o feromônio sexual de Spodoptera cosmioides e avaliar se existe atração cruzada em Spodoptera sp. (Lepidoptera: Noctuidae). Extratos de glândulas de S. cosmioides foram analisados por GC-FID e GC-MS. A ação dos compostos encontrados nas glândulas foi avaliada por meio de bioensaios em túnel de vento e eletrofisiologia. Em campo, testaram-se diferentes armadilhas feromonais: com feromônio comercial de S. frugiperda; com acetato de (9Z)-9-tetradecenila (Z9-14:OAc) e acetato de (9Z,12E)-9,12-tetradecadienila (Z9,E12-14:OAc); com duas fêmeas de S. cosmioides; e controle com hexano. Quatro acetatos foram identificados nas glândulas de fêmeas de S. cosmioides como Z9-14:OAc, Z9,E12-14:OAc, (11Z)-acetato de hexadecenila e acetato de hexadecila (16:OAc), mas somente os dois primeiros acetatos induziram resposta eletrofisiológica nas antenas de machos de S. cosmioides. Nos bioensaios em túnel de vento, machos de S. cosmioides e S. frugiperda responderam em maior número à mistura de coespecíficos; no entanto, houve atração cruzada, uma vez que 47% dos machos de S. frugiperda e 25% dos machos de S. cosmioides responderam à mistura heteroespecífica. Nos experimentos em campo, S. frugiperda e S. cosmioides mostraram o mesmo padrão de...

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Sex Pheromone of the Spanish Population of the Beet Armyworm Spodoptera exigua

Cited by 26 publications

References 16 publications

Evolution of two receptors detecting the same pheromone compound in crop pest moths of the genus Spodoptera

Evolution of two receptors detecting the same pheromone compound in crop pest moths of the genus Spodoptera

Female Sex Pheromone of the Gelechiid Moth Scrobipalpa salinella (Zeller)

Identification and field evaluation of the sex pheromone of a Brazilian population of Spodoptera cosmioides

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