Behavioral responses of the female eastern spruce budwormChoristoneura fumiferana (Lepidoptera, Tortricidae) to the sex pheromone of her own species

Palanaswamy, P.; Seabrook, W. D.

doi:10.1007/bf00990275

Cited by 76 publications

(62 citation statements)

References 15 publications

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“…Several authors have proposed possible functions for pheromone autodetection. For example, female pheromone can function as a dispersal trigger (Palaniswamy andSeabrook 1978, Sanders 1987), as a repellent (Saad and Scott 1981), or attractant (Pearson and Schal 1999), and may inßuence calling and oviposition behavior of conspeciÞc females (Weissling and Knight 1996).…”

Section: Discussionmentioning

confidence: 99%

Antennal Sensilla and Electrophysiological Response of Male and Female <I>Spodoptera frugiperda</I> (Lepidoptera: Noctuidae) to Conspecific Sex Pheromone and Plant Odors

Malo

Castrejón-Gómez²,

Cruz‐López

et al. 2004

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The olfactory system of male and female Spodoptera frugiperda (J. E. Smith) was studied by examining the morphology and distribution of antennal sensilla and determining the responses of both sexes to conspeciÞc female sex pheromone components and plant volatiles using electroantennography (EAG). Seven types of sensilla were observed on the ßagellum of the antennae: trichodea, chaetica, coeloconica, styloconica, auricilica, squamiformia, and basiconica. Only one type of trichodea sensilla was found on the antennae of both sexes, but these sensilla were more abundant on male than on female. EAG records of both sexes to 10-g stimulus loads of six pheromone components showed that (Z)-7-dodecenyl acetate (Z7Ð12: Ac) and (Z)-9-dodecenyl acetate (Z9 Ð12: Ac) elicited larger responses than those evoked by (Z)-11-hexadecenyl acetate (Z11Ð16: Ac), (Z, E)-9,11-tetradecadienyl acetate (Z9, E11Ð14: Ac), (Z, E)-9,12-tetradecadienyl acetate (Z9, E12Ð14: Ac), and hexane in female antennae. In the case of male antennae, (Z)-9-tetradecenyl acetate (Z9 Ð14: Ac) and Z9, E12Ð14: Ac evoked larger EAG responses than those elicited by Z7Ð12: Ac, Z11Ð16: Ac, Z9, E11Ð14: Ac, and hexane. The compounds that selectively evoked larger EAG responses from males than females were Z9, E12Ð14: Ac, and Z9 Ð14: Ac. Dose-response experiments showed that, at the lowest dose tested, Z9 Ð14: Ac and Z9, E12Ð14: Ac elicited larger EAG responses than Z9 Ð12: Ac and Z7Ð12: Ac in male antennae. At the highest doses tested, the diene elicited the largest EAG responses. In the case of female antennae, the dose, but not the pheromone component, had a signiÞcant effect. Male and female responses to 10-g stimulus loads of 16 plant volatiles showed that hexan-1-ol evoked larger EAG responses in comparison with those elicited by hexanal, (E)-3-hexenol, 2-carene, phellandrene, limonene, ␤-pinene, and hexane. The response of male antennae was signiÞcantly stronger than the female. Dose-response experiments showed that both sexes appeared to be most sensitive to alcohols, particularly at the highest dose tested.

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Section: Discussionmentioning

confidence: 99%

Antennal Sensilla and Electrophysiological Response of Male and Female <I>Spodoptera frugiperda</I> (Lepidoptera: Noctuidae) to Conspecific Sex Pheromone and Plant Odors

Malo

Castrejón-Gómez²,

Cruz‐López

et al. 2004

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“…We used a high density of eggs plus the presence of pheromone as population density cues for the female, because females may detect density by sight (Rausher, 1979) and/or by the concentration of pheromone. Females of various insects may associate high concentrations of pheromone with high population densities (Palaniswamy & Seabrook, 1978;Sanders, 1987). We placed the caged females (pheromone source) in the tents at the same time the mating chamber was added to ensure that some pheromone was present in the tent when the experimental female emerged and mated.…”

Section: Intraspecific Competition Experimentsmentioning

confidence: 99%

“…This behaviour is thought to minimize intraspecific competition. Female insects may detect the presence of a high density of conspecific eggs visually (Rausher, 1979) or by the presence of pheromones (Prokopy, 1972;Rothschild & Schoonhoven, 1977;Sanders et al, 1977;Palaniswamy & Seabrook, 1978;Sanders, 1987).…”

Section: Intraspecific Competitionmentioning

confidence: 99%

Oviposition strategies employed by the western spruce budworm: tests of predictions from the phylogenetic constraints hypothesis

Leyva¹,

Clancy²,

Price³

2003

Agri and Forest Entomology

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1 Predictions from the Phylogenetic Constraints Hypothesis were tested for the first time in an eruptive forest Lepidopteran species, the western spruce budworm. 2 In previous work, we established that western spruce budworm females exhibit oviposition preferences with regard to tree age, tree vigour and host species. However, there was no evidence to support a link between oviposition preference and larval performance, which supports the Phylogenetic Constraints Hypothesis. 3 Our preference data led us to test whether female budworms use oviposition strategies to select the sites where they lay their egg masses. Our experiments were designed to make direct comparisons between latent and eruptive insect herbivores with respect to two oviposition behaviours: egg retention and avoidance of conspecifics. This type of research has not previously been conducted on any eruptive forest Lepidopteran. 4 Female budworms retained eggs instead of laying them on less preferred hosts in two of three experiments, but the percentage of eggs they retained was significantly less compared to latent insect herbivores. 5 In addition, female budworms actively avoided oviposition in areas with the highest density of conspecific egg masses, but they laid egg masses in all the other locations provided. This contrasts with the pattern seen in latent insect herbivores, which consistently avoid laying their eggs near any sites already used by conspecifics. 6 Our research indicates that there are extreme differences between latent and eruptive insect herbivores with respect to egg retention and avoidance of conspecifics, thus supporting the Phylogenetic Constraints Hypothesis.

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“…Finally, moth behavior may be influenced by exposure to pheromone, and females may disperse to areas of lower pheromone concentration following autodetection. 24 wileyonlinelibrary.com/journal/ps Mining of leaves in treated plots may also be explained by movement of mated females into treated plots from neighboring areas. Indeed, we saw a disparity between moth flight and leaf mining early in our study that might suggest such movement.…”

Section: Discussionmentioning

confidence: 98%

Investigating dormant-season application of pheromone in citrus to control overwintering and spring populations ofPhyllocnistis citrella(Lepidoptera: Gracillariidae)

2015

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Dispensers provided effective and persistent disruption of male catch in pheromone-baited monitoring traps but were minimally effective in reducing leaf infestation by P. citrella. Winter application of pheromone did not reduce leaf mining in spring compared with spring application alone. Tops of trees may have provided a refuge for mating. Published 2015. This article is a U.S. Government work and is in the public domain in the USA.

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Behavioral responses of the female eastern spruce budwormChoristoneura fumiferana (Lepidoptera, Tortricidae) to the sex pheromone of her own species

Cited by 76 publications

References 15 publications

Antennal Sensilla and Electrophysiological Response of Male and Female <I>Spodoptera frugiperda</I> (Lepidoptera: Noctuidae) to Conspecific Sex Pheromone and Plant Odors

Antennal Sensilla and Electrophysiological Response of Male and Female <I>Spodoptera frugiperda</I> (Lepidoptera: Noctuidae) to Conspecific Sex Pheromone and Plant Odors

Oviposition strategies employed by the western spruce budworm: tests of predictions from the phylogenetic constraints hypothesis

Investigating dormant-season application of pheromone in citrus to control overwintering and spring populations ofPhyllocnistis citrella(Lepidoptera: Gracillariidae)

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