Determining pheromone content of hairpencils from individual virgin males ofPseudaletia unipuncta (Haw.) (Lepidoptera: Noctuidae)

Fitzpatrick, Sheila M.; Miller, David E.; Weatherston, Iain; McNeil, Jeremy N.

doi:10.1007/bf00988203

Cited by 19 publications

(7 citation statements)

References 10 publications

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“…(Salicaceae),, also in the bark of other angiosperm trees (this paper), disruptive to aggregation of mountain pine beetle (Borden et al 1998). Male hairpencil pheromone component in some noctuid moths (Fitzpatrick et al 1985;Jaquin et al 1991). Antennal responses elicited in Microplitis croceipes (Cresson) (Hymenoptera: Braconidae) (Li et al 1992) and in Trichoplusia ni (Hü bner) (Lepidoptera: Noctuidae) (Todd & Baker 1993).…”

Section: Discussionmentioning

confidence: 99%

A survey of antennal responses by five species of coniferophagous bark beetles (Coleoptera: Scolytidae) to bark volatiles of six species of angiosperm trees

Huber¹,

Gries²,

Borden³

et al. 2000

Chemoecology

112

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Section: Discussionmentioning

confidence: 99%

A survey of antennal responses by five species of coniferophagous bark beetles (Coleoptera: Scolytidae) to bark volatiles of six species of angiosperm trees

Huber¹,

Gries²,

Borden³

et al. 2000

Chemoecology

112

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“…A possible explanation may be that the marker's effectiveness is area-restricted and thus may need time to spread (Wylie 1971;Rogers 1972;van Lenteren 1981). Individual variation in pheromones has been documented in several insects, among others, moths (Fitzpatrick et al 1985;Lofstedt et al 1985), bark beetles (Birgersson et al 1988), and honey bees (Breed et al 1988;Moritz 1988). By contrast, the rate of acceptance of conspecific-parasitized aphids varied with the mean number of mature eggs available in a female's ovaries, reaching a maximum on day 4 (Table 2; Figs.…”

Section: Marchiapril 1990mentioning

confidence: 99%

AGE-SPECIFIC PATTERN OF HOST DISCRIMINATION BY THE APHID PARASITOID EPHEDRUS CALIFORNICUS BAKER (HYMENOPTERA: APHIDIIDAE)

Völkl

Mackauer

1990

Can Entomol

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Can. Enr. 122: 349-361 (1990)The solitary aphid parasitoid Ephedrus californicus Baker is able to discriminate between unparasitized and parasitized third-instar nymphs of the pea aphid, Acyrthosiphon pisum (Harris). Superparasitism varied with the number of mature eggs (which is age-dependent) present in the ovaries as well as with the number and the quality of any hosts encountered. Conspecific superparasitism varied with wasp age; older females, with a large egg supply, accepted hosts parasitized by a conspecific female if unparasitized aphids were unavailable. Self superparasitism occurred at all ages; it was the least likely behaviour compared with egg deposition in unparasitized and conspecific-parasitized hosts. Prior experience (learning) was not necessary for host discrimination, but it did influence the search rate, which was higher in inexperienced than experienced females. In choice experiments, wasps preferred conspecific-over selfparasitized aphids and thus were able to distinguish between them. It is suggested that oviposition markers vary among conspecific females. The data are discussed with reference to theories about oviposition decisions and progeny allocation in solitary hymenopteran parasitoids.Le parasito~de solitaire Ephedrus californicus Baker est capable de discriminer entre des nymphes de troisisme stade parasitkes et non-parasitkes du puceron du p i s , Acyrthosiphon pisum (Harris). Le niveau de superparasitisme a vari6 avec le nombre d'oeufs (qui dCpend de l'tige) prksents dans les ovaires ainsi qu'avec le nombre et la qualit6 de tout hBte rencontre. Le niveau de superparasitisme con-sp6cifique a vari6 avec 1'Lge des guepes; des femelles tigCes et posskdant une grande rCserve d'oeufs ont accept6 des hBtes parasitCs par une femelle con-spkcifique si des pucerons non-parasitks n'ktaient pas disponibles. Le superparasitisme personnel s'est produit i tous les Lges; c'6tait le comportement le moins probable lorsque comparC ? i la ponte d'oeufs dans des hBtes non-parasites ou parasitCs par des individus con-spkifiques. Une exp6rience antkrieure (apprentissage) n'a pas it6 nicessaire pour la discrimination d'hBtes, mais a influend le taux de recherche, lequel Ctait plus ClevC chez les femelles sans expkrience. Dans des tests de choix, les gu&pes ont prCfCrC des pucerons parasitks par des individus con-sp6cifiques i des pucerons parasitis par elles-m&mes et Ctaient donc capables de distinguer entre les deux. I1 est suggCr6 que les marqueurs d'oviposition varient entre les femelles con-spkifiques. Les donnCes sont discuties dans le contexte des thCories concernant les decisions d'oviposition et l'allocation de la progkniture chez des hymCnoptkres parasitoydes solitaires.

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“…This bias partially emerges from the distinctive difference in male and female pheromone biosynthesis in the Lepidoptera. Males often use various secondary plant components as precursors for their sex pheromones (e.g., pyrrolizidine alkaloids (Löfstedt et al 1989; Eisner and Meinwald 1994; but see Fitzpatrick et al 1985; Landolt and Heath 1990), and the pheromones honestly signal the amount of the alkaloids in the spermatophore that is later incorporated in the eggs as a means of protection against predators (Eisner and Meinwald 1994). Females, however, synthesize their species‐specific sex pheromone de novo from available fatty acids (Jurenka 2004) that are not influenced much by the origin of the larval diet (Miller et al 1976), and the typically small amount of the pheromone (ngs) (El‐Sayed 2010) released by the females is traditionally considered as not costly to females (Cardé and Baker 1984; Kokko and Wong 2007).…”

mentioning

confidence: 99%

Fitness Cost of Pheromone Production in Signaling Female Moths

2011

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A secondary sexual character may act as an honest signal of the quality of the individual if the trait bears a cost and if its expressionis phenotypically condition dependent. The cost of increasing the trait should be tolerable for individuals in good condition but not for those in a poor condition. The trait thus provides an honest signal of quality that enables the receiver to choose higher quality mates. Evidence for sex pheromones, which play a major role in shaping sexual evolution, inflicting a signaling cost is scarce. Here, we demonstrate that the amount of the major component of the pheromone in glands of Lobesia botrana (Lepidoptera) females at signaling time was significantly greater in large than in small females, that male moths preferred larger females as mates when responding to volatile signals, and small virgin females, but not large ones, exposed to conspecific pheromone, produced, when mated, significantly fewer eggs than nonexposed females. The latter indicates a condition-dependent cost of signaling. These results are in accordance with the predictions of condition-dependent honest signals. We therefore suggest that female signaling for males using sex pheromones bears a cost and thus calling may serve as honest advertisement for female quality.

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Determining pheromone content of hairpencils from individual virgin males ofPseudaletia unipuncta (Haw.) (Lepidoptera: Noctuidae)

Cited by 19 publications

References 10 publications

A survey of antennal responses by five species of coniferophagous bark beetles (Coleoptera: Scolytidae) to bark volatiles of six species of angiosperm trees

A survey of antennal responses by five species of coniferophagous bark beetles (Coleoptera: Scolytidae) to bark volatiles of six species of angiosperm trees

AGE-SPECIFIC PATTERN OF HOST DISCRIMINATION BY THE APHID PARASITOID EPHEDRUS CALIFORNICUS BAKER (HYMENOPTERA: APHIDIIDAE)

Fitness Cost of Pheromone Production in Signaling Female Moths

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