(1S,3S,7R)-3-methyl-α-himachalene from the male sandfly Lutzomyia longipalpis (Diptera: Psychodidae) induces neurophysiological responses and attracts both males and females

Spiegel, Carolina N.; Jeanbourquin, Philippe M.; Guérin, Patrick M.; Hooper, Antony M.; Claude, Saturnin; Tabacchi, Raffaele; Сано, С.; Mori, Kenji

doi:10.1016/j.jinsphys.2005.08.007

Cited by 32 publications

(28 citation statements)

References 29 publications

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“…Th e distribution and the length of "ascoid sensilla" on the antennal segments have considerable taxonomic importance in mothfl ies (Psychodidae Psychodinae) and sandfl ies (Psychodidae Phlebotominae), which explains why they are fairly well known. Th eir structure and function, however, have only been dealt in the Phlebotominae Lutzomyia longipalpis (Lutz & Neiva 1912) for its economic signifi cance (Dougherty & Hamilton 1997, Spiegel et al 2005a. As for the other sensilla which may be found on the antennae, they have only been mentioned among the Phlebotominae, and always for the same reasons.…”

Section: Figurementioning

confidence: 99%

“…Th e authors have not obtained electrophysiological recordings from ascoid sensillum receptor cells in antennae of male and female sandfl ies. Receptor cells of both sexes responded only to the main component of the male tergal gland extract (Spiegel et al 2005a). Both males and females fl ew upwind in a wind tunnel towards a fi lter paper disk treated with either 4-6 male equivalents of the tergal gland extract, pure (1 S, 3 S, 7 R)-3-methyl-α-himachalene or the synthetic mixture of eight isomers.…”

Section: Morphological and Functional Considerationsmentioning

confidence: 99%

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Antennal sensilla in five Psychodini moth flies (Diptera: Psychodidae: Psychodinae) pollinators ofArumspp. (Araceae)

Faucheux

Gibernau

2011

Annales de la Société entomologique de France (N.S.)

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Abstract. The pollination of the genus Arum (Araceae) is mainly achieved by deception, the fl oral odour mimicking the pollinator ovipositing site. In order to discover the sensory organs involved in this attraction, we have studied the antennae of fi ve species of psychodine moth-fl ies (former Psychoda sensu lato = Psychodini), pollinators of Arum spp. The antennae of the fi ve Psychodini reveal seven types of sensilla: multiporous tribranched sensilla basiconica (sensilla ascoidea), multiporous sensilla basiconica, multiporous sensilla coeloconica, multiporous sensilla auricillica, uniporous sensilla basiconica, aporous sensilla chaetica, aporous Böhm's sensilla. Each species possesses three, fi ve or six of these sensillum types. All the multiporous sensilla are probably olfactory receptors while the uniporous sensilla basiconica must possess a contact chemoreceptive function. The multiporous tribranched sensilla basiconica (s. ascoidea), present in all the species, are the best candidates for the reception of the odours given off by the ovipositing sites and the infl orescences of Arum. The multiporous sensilla basiconica and the multiporous sensilla coeloconica may be involved respectively as CO 2 receptors or thermoreceptors. Psychoda phalaenoides, which is the main pollinator of A. maculatum, is the species which possesses the largest number of antennal sensilla. The sexual dimorphism, studied only in Psycha grisescens, as concerns the number of sensilla and the absence of a sensillum type which differ according to sex, is diffi cult to interpret.Résumé. Sensilles antennaires de cinq espèces de Psychodini (Diptera : Psychodidae : Psychodinae) pollinisateurs du genre Arum (Araceae). La pollinisation du genre Arum (Araceae) est réalisée essentiellement par tromperie, l'odeur fl orale imitant les sites d'oviposition du pollinisateur. Afi n de rechercher les organes sensoriels impliqués lors de cette attraction, noue avons étudié les antennes de quelques espèces du genre Psychoda sensu lato, pollinisateurs des Arum. Les antennes des cinq Psychodini montrent l'existence de sept types sensillaires : des sensilles basiconiques multipores à trois branches (sensilles ascoïdes), des sensilles basiconiques multipores, des sensilles coeloconiques multipores, des sensilles auricilliformes multipores, des sensilles basiconiques à pore terminal, des sensilles chétiformes sans pore et des sensilles de Böhm sans pore. Chaque espèce possède trois, cinq ou six de ces types sensillaires. Toutes les sensilles multipores sont probablement des récepteurs olfactifs tandis que les sensilles basiconiques unipores possèdent une fonction chimio-réceptrice de contact. Les sensilles ascoïdes présentes en grands nombres chez toutes les espèces sont les meilleures candidates pour la réception des odeurs en provenance des sites d'oviposition et des infl orescences d'Arum. Les sensilles multipores basiconiques et coeloconiques peuvent être impliquées respectivement dans la réception du CO 2 ou comme thermorécepteurs. Psychoda phalaenoide...

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Section: Figurementioning

confidence: 99%

Section: Morphological and Functional Considerationsmentioning

confidence: 99%

Antennal sensilla in five Psychodini moth flies (Diptera: Psychodidae: Psychodinae) pollinators ofArumspp. (Araceae)

Faucheux

Gibernau

2011

Annales de la Société entomologique de France (N.S.)

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“…Spiegel et al (2005) showed that L. longipalpis males from Jacobina (state of Bahia, Brazil) were attracted by the male sex pheromone (1S, 3S, 7R)-3-methyl-α-himachalen alone within a wind tunnel, and it elicited electrophysiological responses on female and male antennae. It is possible that the male sex pheromones play an important role in male aggregation.…”

Section: Discussionmentioning

confidence: 93%

“…It is possible that the male sex pheromones play an important role in male aggregation. It is unknown whether the male sex pheromone produced by L. longipalpis complex population in MG (Hamilton et al , 2004) acts in male aggregation as was previously demonstrated by Spiegel et al (2005). It is possible that male attraction to LT (with or without baits) is higher than the female attraction.…”

Section: Discussionmentioning

confidence: 99%

Are light traps baited with kairomones effective in the capture of Lutzomyia longipalpis and Lutzomyia intermedia? An evaluation of synthetic human odor as an attractant for phlebotomine sand flies (Diptera: Psychodidae: Phlebotominae)

Andrade

Dias³

et al. 2008

Mem. Inst. Oswaldo Cruz

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Haematophagous dipterans of the Nematocera and Brachycera suborders have been objects of study for a better understanding of the behavioral mechanisms used by insects to find their blood meal. This is usually elicited by chemical stimuli (semiochemicals) called kairomones that are often released by the vertebrate hosts (Gibson & Torr 1999).Among the more than 500 species of the subfamily Phlebotominae that are known in the Americas, over 400 belong to the genus Lutzomyia (Young & Duncan 1994, Galati 2003. Lutzomyia longipalpis (Lutz and Neiva) and L. intermedia (Lutz and Neiva) play an important role in the transmission of leishmaniases (Forattini 1973, Lainson 1989, Lemos & Lima 2005. Host-preference studies of Lutzomyia spp. frequently use animals, such as chicken, dogs, horses (Quinnell et al. 1992, Ximenes et al. 1999, Bongiorno et al. 2003, and occasionally humans as bait (Quinnell et al. 1992, Aguiar et al. 1996, Rebollar-Telez et al. 1999, Pinto et al. 2001. Laboratory assays (e.g., precipitin test) have been used for the identification of hosts that provide the blood meal for the phlebotomine sand flies (Christensen et al. 1982, Afonso et al. 2005). CDC light traps (Sudia & Chamberlain 1962) and Shannon traps (Shannon 1939) have been used as tools for monitoring phlebotomine sand flies, thus eliminating the ethical problems associates with using human bait. However, some studies have shown that certain phlebotomine sand fly species are highly anthropophilic but rarely phototropic (Alexander et al. 1995, Travi et al. 1998, while other species seem to be more phototropic than antropophilic, such as Lutzomyia verrucarum Townsend (Davies et al. 1995). It is possible that these species are responsive to non-specific kairomones such as CO 2 (Quinnell et al. 1992, Campbell-Lendrum et al. 1999a, and can be attracted by different species of hosts. CO 2 is the main volatile kairomone released by vertebrates and it is used by most haematophagous insects to find their hosts (Eiras 2001). Knudsen et al. (1979) demonstrated for the first time the attractiveness of CO 2 (released from dry ice) to phlebotomine sand flies. Light traps (LT) baited with CO 2 enhanced the capture of phlebotomine sand flies in the field (Chaniots 1983), despite the fact that attraction to CO 2 was not observed in the laboratory (Nigam & Ward 1991).The chemical 1-octen-3-ol (octenol) is an important kairomone used by zoophilic dipteran species of the families Muscidae, Tabanidae, Ceratopogonidae and Culicidae to seek their hosts (Kline at al. 1990, Gibson & Torr 1999, Bernier et al. 2000, Eiras 2001). To date, there is no evidence supporting the trapping of phlebotomine sand flies with this kairomone. Lactic acid was the first kairomone identified from human skin (Acree et al. 1968), and its effect in attracting mosquitoes has been evaluated, especially in combination with CO 2 (Kline et al. 1990, Eiras & Jepson 1991, ammonia and some fatty acids (Geier et al. 1999). Ammonia was identified from vertebrate odors in the 1970s (Larson et al. 19...

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“…Los principales órganos sensoriales encargados de la detección de sustancias químicas volátiles en especies del género Lutzomyia son las sensilias cuticulares olfativas que están restringidas a la cabeza, particularmente en antenas y palpos (Spiegel, et al 2005). En Lutzomyia longipalpis, las sensilias intervienen en la detección de las feromonas liberadas por los machos y las cairomonas emitidas por los vertebrados, estímulos que originan en esta especie un comportamiento de agregación.…”

Section: Convergencia Multimodalunclassified

Ecología sensorial de insectos vectores

Cetina¹

2011

biomedica

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Rabelais, Tours, FranciaLa sangre de los vertebrados es un alimento muy rico en nutrientes y, salvo por la presencia eventual de parásitos, es además estéril. Muchos insectos la han adoptado como alimento principal o incluso único durante toda su vida. Sin embargo, la sangre no se encuentra a libre disposición en el ambiente, ni su obtención está desprovista de riesgo. Ella circula en el interior de vasos sanguíneos ocultos bajo la piel de animales móviles y capaces de defenderse que, incluso, pueden llegar a alimentarse del insecto que intenta picarlos. Para poder obtener y aprovechar la sangre de vertebrados homeotermos son necesarias importantes adaptaciones morfológicas, fisiológicas y de comportamiento, que representan la respuesta a fuertes presiones de selección que han modelado la biología de los insectos vectores de enfermedades.Compartir hábitat con los huéspedes y predadores, identificar y localizar una fuente potencial de alimento, acercarse a ella en el momento oportuno, localizar los vasos sanguíneos ocultos bajo la piel, perforar la piel y succionar sangre sin ser detectado, ingerir rápidamente una gran cantidad de sangre caliente, protegerse del poder oxidante de ésta y evitar todo contacto innecesario con los huéspedes son algunos de los problemas asociados al modo de vida hematófago. La presencia de parásitos en la sangre del huésped vertebrado agrega el problema adicional de neutralizar los efectos deletéreos derivados de su entrada en el cuerpo del insecto.La resolución adecuada de algunos de los problemas asociados a la alimentación sanguínea depende específicamente de la manera en que los hematófagos obtienen y utilizan la información proveniente del medio ambiente, es decir, de su ecología sensorial.Un esfuerzo importante de investigación se consagra desde hace mucho tiempo a la comprensión de las señales asociadas a los huéspedes que permiten a los insectos localizar su alimento. Dicho conocimiento podría ayudar entender cuestiones clave del tipo: ¿cómo reconocen los insectos hematófagos a un huésped adecuado?, ¿por qué ciertas personas son más picadas que otras?, ¿cómo localizan los vasos sanguíneos bajo la piel?, ¿es posible desarrollar cebos y trampas tan atractivos como un huésped vivo?Mucho se ha avanzado en la identificación de los olores atractivos producidos por los vertebrados de sangre caliente, pero mucho menos en el rol de otras claves, como el calor, el vapor de agua y las señales visuales (forma, contraste, color, movimiento) que forman parte de integral de la información potencial que los insectos son capaces de percibir y utilizar. Menos aun de la manera como las distintas señales son integradas por el insecto al servicio de detectar y reconocer un huésped adecuado. Afortunadamente, diversos estudios recientes comienzan a desvelar la manera en que las distintas señales del huésped interactúan entre sí y con los factores endógenos y motivacionales.Sinergismo unimodal La respuesta a los estímulos químicos individuales ha sido caracterizada en muchos insectos hematófagos y en...

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(1S,3S,7R)-3-methyl-α-himachalene from the male sandfly Lutzomyia longipalpis (Diptera: Psychodidae) induces neurophysiological responses and attracts both males and females

Cited by 32 publications

References 29 publications

Antennal sensilla in five Psychodini moth flies (Diptera: Psychodidae: Psychodinae) pollinators ofArumspp. (Araceae)

Antennal sensilla in five Psychodini moth flies (Diptera: Psychodidae: Psychodinae) pollinators ofArumspp. (Araceae)

Are light traps baited with kairomones effective in the capture of Lutzomyia longipalpis and Lutzomyia intermedia? An evaluation of synthetic human odor as an attractant for phlebotomine sand flies (Diptera: Psychodidae: Phlebotominae)

Ecología sensorial de insectos vectores

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