Do adult leaf beetles (<i>Plagiodera versicolora</i>) discriminate between odors from intact and leaf-beetle-infested willow shoots?

Yoneya, Kinuyo; Kugimiya, Soichi; Takabayashi, Junji

doi:10.1080/17429140802710658

Cited by 11 publications

(12 citation statements)

References 25 publications

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“…We recently reported that ladybird (Aiolocaria hexaspilota) adults showed no preference for S. eriocarpa infested by leaf beetle adults (non-prey) over uninfested plants, but moved more often to the willow plants infested by leaf beetle larvae (prey) than to uninfested plants (Yoneya et al 2009b). Furthermore, adult P. versicolora (either satiated or starved) are attracted to uninfested S. eriocarpa leaf volatiles, while only starved female P. versicolora are attracted to adult-infested S. eriocarpa volatiles in their foraging (Yoneya et al 2009a). Here, P. versicolora larvae-induced volatiles are shown to affect the behavior of conspecific larvae as well.…”

Section: Discussionmentioning

confidence: 98%

“…Studies on the response of herbivorous arthropods to plant volatiles have focused mainly on adult herbivores finding a host plant for their oviposition. Uninfested leaves emit a blend of volatiles that can be exploited by adult herbivores as information indicating the presence of a host plant (e.g., Bernays and Chapman 1994;Dicke and van Loon 2000;Yoneya et al 2009a). Foraging adult herbivores also use volatiles from infested plants for host search; some of these odors act as attractants (Bolter et al 1997;Dicke and van Loon 2000;Kalberer et al 2001;Horiuchi et al 2003) and some as repellents (Dicke 1986;Dicke and van Loon 2000;De Moraes et al 2001;Kessler and Baldwin 2001;Horiuchi et al 2003;Heil 2004;Yoneya et al 2009a), thus preventing colonization of food resources that are infested by the same or different herbivore species.…”

Section: Introductionmentioning

confidence: 98%

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Specialist Leaf Beetle Larvae Use Volatiles from Willow Leaves Infested by Conspecifics for Reaggregation in a Tree

2010

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Young, gregariously living larvae of the willow leaf beetles Plagiodera versicolora are known to exhibit characteristic aggregation-dispersion-reaggregation behavior and local fidelity to a host tree. In this study, we investigated whether plant volatiles induced by feeding P. versicolora larvae were involved in the reaggregation behavior. Under laboratory conditions, we conducted dual-choice bioassays and found that the first and second instars discriminated between volatiles from leaves infested by larvae and volatiles from uninfested leaves. The discriminative behavior was dependent on both the time leaves were infested and the age of discriminating larvae. First and second instars preferred odor from 1-d-infested leaves to odor from uninfested leaves, whereas third instars (solitary stage) did not discriminate between these volatile blends. Odor from 2-d-infested leaves was preferred to odor from 1-d-infested leaves by first instars, whereas odor from leaves infested for 3 d was not attractive to these very young larvae. Neither was odor of leaves infested for 1 d and then left uninfested for 1 or 2 d attractive to young larvae. The data suggest that the first and second instars use volatiles from a leaf newly infested by conspecific larvae as one of the reaggregation cues. We detected several herbivore-induced compounds in the headspace of the attractive leaves. Among those, a mixture of synthetic (E)-beta-ocimene, (Z)-beta-ocimene, allo-ocimene, and linalool was found to attract the larvae.

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Section: Discussionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 98%

Specialist Leaf Beetle Larvae Use Volatiles from Willow Leaves Infested by Conspecifics for Reaggregation in a Tree

2010

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“…In addition, other willow species that share a niche with S. eriocarpa in the wild could also attract A. hexaspilota when infested by P. versicolora, although volatile profiles could be species specific. Plagiodera versicolora males and females (satiated and starved) are reported to prefer intact shoot leaf odour to clean air, and only starved females prefer odour from infested shoots to odour from intact shoots (Yoneya et al ., 2009). Thus, tritrophic interactions mediated by plant volatiles in natural willow communities could be more complicated than expected.…”

Section: Discussionmentioning

confidence: 99%

Can herbivore‐induced plant volatiles inform predatory insect about the most suitable stage of its prey?

Yoneya

Kugimiya

Takabayashi

2009

Physiological Entomology

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The leaf beetle Plagiodera versicolora (Coleoptera: Chrysomelidae) is a specialist herbivore, all of whose mobile stages feed on the leaves of salicaceous plants. Both the larval and adult stages of the ladybird Aiolocaria hexaspilota (Coleoptera: Coccinellidae) are dominant natural enemies of the larvae of the leaf beetle. To clarify the role of plant volatiles in prey-finding behaviour of A. hexaspilota, the olfactory responses of the ladybird in a Y-tube olfactometer are studied. The ladybird adults show no preference for willow plants Salix eriocarpa that are infested by leaf beetle adults (nonprey) over that for intact plants but move more to the willow plants infested by leaf beetle larvae (prey) than to intact plants. Moreover, ladybird larvae show no preference for willow plants infested by leaf beetle larvae or adults over intact plants. Using gas chromatography-mass spectrometry, six volatile compounds are released in larger amounts in the headspace of willow plants infested by leaf beetle larvae than in the headspace of willow plants infested by leaf beetle adults. In addition, the total amount of volatiles emitted from willow plants that are either intact or infested by leaf beetle adults is much smaller than that from willow plants infested by leaf beetle larvae. These results indicate that volatiles from S. eriocarpa infested by P. versicolora inform A. hexaspilota adults about the presence of the most suitable stage of their prey, whereas A. hexaspilota larvae do not use such information.

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“…Overwintered, reproductively active females are active for about six weeks in the field (Kher et al 2011) and have to find suitable hosts for their progeny whereas males at this time are relatively short-lived (Haynes and Gage 1981). Gender can contribute to differential responses to olfactory cues associated with plant volatiles (Yoneya et al 2009). Adults of willow leaf beetle, Plagiodera versicolora (Laicharting) (Coleoptera: Chrysomelidae), locate their host using odours from newly formed shoots of Salix eriocarpa; females respond to the cues from intact shoots and those infested by conspecifics in greater proportions than males (Yoneya et al 2009).…”

Section: Discussionmentioning

confidence: 99%

“…Gender can contribute to differential responses to olfactory cues associated with plant volatiles (Yoneya et al 2009). Adults of willow leaf beetle, Plagiodera versicolora (Laicharting) (Coleoptera: Chrysomelidae), locate their host using odours from newly formed shoots of Salix eriocarpa; females respond to the cues from intact shoots and those infested by conspecifics in greater proportions than males (Yoneya et al 2009). Similarly, female Colorado potato beetle, Leptinotarsa decimlineata L. (Coleoptera: Chrysomelidae), are more responsive to volatile cues associated with their host compared to males (Landolt et al 1999).…”

Section: Discussionmentioning

confidence: 99%

Olfactory host‐finding behaviour of Oulema melanopus (Coleoptera: Chrysomelidae) and its parasitoid, Tetrastichus julis (Hymenoptera: Eulophidae)

Kher

Cárcamo

Evenden

et al. 2017

J Applied Entomology

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Behavioural responses to the host-associated olfactory cues have not been completely understood for the cereal leaf beetle, Oulema melanopus, and its principal parasitoid, Tetrastichus julis. We, therefore, investigated the role of olfactory cues in the host-finding behaviour of these species using olfactory bioassays. Behavioural responses of O. melanopus to odours emanating from intact host plants (wheat, oat, barley) vs. a clean-air control were tested using multichoice and two-choice bioassays. For T. julis, responses of na€ ıve and experienced adult female wasps to odours associated with the faecal coat of O. melanopus larvae were measured under multichoice and two-choice conditions. Our results indicate that olfactory cues are involved in the host-finding behaviour of both O. melanopus and T. julis. Olfactory responses of O. melanopus were influenced by the sex of the beetle and the physiological stage of adults (reproductively active vs. in reproductive diapause). Females respond to olfactory cues in greater proportions than males, and reproductively active, overwintered adults show greater responsiveness than teneral adults in reproductive diapause. Behavioural responses to cues emanating from different crop species were different in multichoice bioassays but not in two-choice bioassays. Further, we report for the first time that the olfactory cues associated with the faecal coat of O. melanopus evoke host-finding behaviour of its parasitoid, T. julis. Na€ ıve female wasps are more likely to use these cues to locate the potential host than experienced females. The results of this investigation provide insights into host finding by both the species and the nature of behavioural response brought about by olfactory stimuli, and the results can help to design strategies to improve parasitoid activity by enhancing the crop environment to generate cues for host finding and to manage O. melanopus populations.

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Do adult leaf beetles (Plagiodera versicolora) discriminate between odors from intact and leaf-beetle-infested willow shoots?

Cited by 11 publications

References 25 publications

Specialist Leaf Beetle Larvae Use Volatiles from Willow Leaves Infested by Conspecifics for Reaggregation in a Tree

Specialist Leaf Beetle Larvae Use Volatiles from Willow Leaves Infested by Conspecifics for Reaggregation in a Tree

Can herbivore‐induced plant volatiles inform predatory insect about the most suitable stage of its prey?

Olfactory host‐finding behaviour of Oulema melanopus (Coleoptera: Chrysomelidae) and its parasitoid, Tetrastichus julis (Hymenoptera: Eulophidae)

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