Effect of primary-host kairomones on the attractiveness of the hop-aphid sex pheromone to Phorodon humuli males and gynoparae

Lösel, Peter; Lindemann, Michael; Scherkenbeck, Jürgen; Campbell, Colin S.; Hardie, Jim; Pickett, John A.; Wadhams, L. J.

doi:10.1007/978-94-009-1720-0_18

Cited by 4 publications

(5 citation statements)

References 6 publications

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“…Macrosiphum euphorbiae gynoparae, like those of some other aphid species [ 6 , 19 ], showed a significantly higher response to volatiles from the preferred primary host plant over the other odour sources tested, supporting the hypothesis that this species uses volatile cues from primary hosts to locate suitable hosts for the subsequent deposition of oviparae. These volatiles are probably used in combination with visual cues, such as plant reflected wavelengths that modulate aphid landing behaviour [ 26 , 27 , 28 ], in host plant selection.…”

Section: Discussionmentioning

confidence: 68%

“…If our laboratory finding are supported under field conditions, then it would seem that the most effective management tool for aphid pests would be the use of primary host plant volatiles alone, or in combination with the sex pheromones. This could be achieved through the strategic planting of specific plants to attract or deter aphids [ 19 ] or the deployment of synthetic lures once the specific volatiles from primary hosts have been identified. The objective would be to decrease pesticide applications, thereby reducing the negative environmental effects of pesticide use and the development of pesticide-resistant aphid strains [ 41 ].…”

Section: Discussionmentioning

confidence: 99%

“…However, there has not been a great deal of experimental work examining the responses of either gynoparae or males, and the results available are quite variable. While the gynoparae of Rhopalosiphum padi [ 16 ] and Phorodon humuli [ 6 , 19 ] responded positively to volatiles from their primary host plants, the gynoparae of Aphis fabae did not [ 20 ]. Similarly, while R. padi [ 16 ] males were attracted to the volatiles of their primary host plants, those of P. humuli [ 19 ], Cryptomyzus galeopsidis [ 5 ] and Sitobion fragariae [ 21 ] were not.…”

Section: Introductionmentioning

confidence: 99%

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Host Plant Volatiles and the Sexual Reproduction of the Potato Aphid, Macrosiphum euphorbiae

Hurley

Takemoto

Takabayashi

et al. 2014

Insects

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In late summer, heteroecious aphids, such as the potato aphid, Macrosiphum euphorbiae, move from their secondary summer host plants to primary host plants, where the sexual oviparae mate and lay diapausing eggs. We tested the hypothesis that volatiles of the primary host, Rosa rugosa, would attract the gynoparae, the parthenogenetic alate morph that produce oviparae, as well as the alate males foraging for suitable mates. In wind tunnel assays, both gynoparae and males oriented towards and reached rose cuttings significantly more often than other odour sources, including potato, a major secondary host. The response of males was as high to rose cuttings alone as to potato with a calling virgin oviparous female. These findings are discussed within the seasonal ecology of host alternating aphids.

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Section: Discussionmentioning

confidence: 68%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Host Plant Volatiles and the Sexual Reproduction of the Potato Aphid, Macrosiphum euphorbiae

Hurley

Takemoto

Takabayashi

et al. 2014

Insects

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“…These rhinaria, more abundant in winged morphs than in apterous aphids, respond to sex pheromone and plant volatiles suggesting their involvement in host location (Pickett et al ., ). Indeed, it has been reported that the sex pheromone from sexual females serves double purposes and acts also as an aggregation pheromone, attracting asexually reproducing, conspecific winged females (Hardie et al ., ; Lösel et al ., ; Park et al ., ). For gynoparae, this would facilitate in finding a suitable site for producing offspring.…”

Section: Discussionmentioning

confidence: 98%

Expression pattern analysis of odorant‐binding proteins in the pea aphid Acyrthosiphon pisum

et al. 2014

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Odorant-binding proteins (OBPs) are soluble proteins mediating chemoreception in insects. In previous research, we investigated the molecular mechanisms adopted by aphids to detect the alarm pheromone (E)-β-farnesene and we found that the recognition of this and structurally related molecules is mediated by OBP3 and OBP7. Here, we show the differential expression patterns of 5 selected OBPs (OBP1, OBP3, OBP6, OBP7, OBP8) obtained performing quantitative RT-PCR and immunolocalization experiments in different body parts of adults and in the 5 developmental instars, including winged and unwinged morphs, of the pea aphid Acyrthosiphon pisum. The results provide an overall picture that allows us to speculate on the relationship between the differential expression of OBPs and their putative function. The expression of OBP3, OBP6, and OBP7 in the antennal sensilla suggests a chemosensory function for these proteins, whereas the constant expression level of OBP8 in all instars could suggest a conserved role. Moreover, OBP1 and OBP3 are also expressed in nonsensory organs. A light and scanning electron microscopy study of sensilla on different body parts of aphid, in particular antennae, legs, mouthparts, and cornicles-cauda, completes this research providing a guide to facilitate the mapping of OBP expression profiles.

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“…Hardie et al (1994), however, showed that the combination of a pheromone blend with the plant volatiles selectively increased male aphid attraction of Rhopalosiphum padi , indicating interaction between pheromone and host-plant odours. To our knowledge for only two aphid species, R. padi and Phorodon humuli , host-plant volatiles have been found to increase responses to the sex pheromone (Campbell et al , 1990; Hardie et al , 1994; Lösel et al , 1996a,b; Pope et al , 2007). There are, however, no reports of host-plant manipulation by aphids to increase selectivity of attraction to the sex pheromone.…”

Section: Introductionmentioning

confidence: 99%

Female-induced increase of host-plant volatiles enhance specific attraction of aphid maleDysaphis plantaginea(Homoptera: Aphididae) to the sex pheromone

Tol¹,

Helsen²,

Griepink³

et al. 2009

Bull. Entomol. Res.

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All aphid species studied so far share the same sex pheromone components, nepetalactol and nepetalactone. Variation by different enantiomers and blends of the two components released by different aphid species are limited and can only partially explain species-specific attraction of males to females. While some host-plant odours are known to enhance specific attraction of aphid species, herbivore-induced plant volatiles that synergise attractiveness to the sex pheromone are unknown. Here, we demonstrate that for the host-alternating rosy apple aphid (Dysaphis plantaginea (Passerini)) specificity of attraction of males to females is triggered by female-induced tree odours in combination with a 1:8 ratio of (4aS,7S,7aR)-nepetalactone and (1R,4aS,7S,7aR)-nepetalactol. Female aphid infestation induces increased release of four esters (hexyl butyrate, (E)-2-hexenyl butyrate, (Z)-3-hexenyl 3-methylbutyrate and hexyl 2-methylbutyrate) from apple leaves. Two different combinations of three esters applied in a 1:1:1 ratio increase the number of male D. plantaginea and decrease the number of other aphid species caught in water traps in the presence of the pheromone components. The ester blend alone was not attractive. Combination of the pheromone blend with each single ester was not increasing attraction of male D. plantaginea. The demonstration that sexual aphid species use herbivore-induced plant volatiles as a species-specific attractant for mate finding adds a new dimension to our understanding of insect species using or manipulating chemical cues of host plants for orientation.

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Effect of primary-host kairomones on the attractiveness of the hop-aphid sex pheromone to Phorodon humuli males and gynoparae

Cited by 4 publications

References 6 publications

Host Plant Volatiles and the Sexual Reproduction of the Potato Aphid, Macrosiphum euphorbiae

Host Plant Volatiles and the Sexual Reproduction of the Potato Aphid, Macrosiphum euphorbiae

Expression pattern analysis of odorant‐binding proteins in the pea aphid Acyrthosiphon pisum

Female-induced increase of host-plant volatiles enhance specific attraction of aphid maleDysaphis plantaginea(Homoptera: Aphididae) to the sex pheromone

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