Bark volatiles from nonhost angiosperm trees of spruce bark beetle, Ips typographus (L.) (Coleoptera: Scolytidae): Chemical and electrophysiological analysis

Zhang, Qinghe; Schlyter, Fredrik; Birgersson, Göran

doi:10.1007/s000490050010

Cited by 80 publications

(88 citation statements)

References 42 publications

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“…The outlet for the EAD was held in a humidified air-stream flowing at 0.5 m/s over an I. typographus antennal preparation (Zhang et al 2000). A glass capillary indifferent electrode filled with 0.9 % NaCl saline (Ilsanta, Vilnius, Lithuania) and grounded via a silver wire was inserted into the severed beetle head with antennae.…”

Section: Gas Chromatography-electroantennogram Detectionmentioning

confidence: 99%

Electrophysiological and behavioural responses of Ips typographus (L.) to trans-4-thujanol—a host tree volatile compound

Blažytė‐Čereškienė

Apšegaitė

Radžiūtė

et al. 2015

Annals of Forest Science

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Abstract& Key message Spruce trees emit significant amounts of trans-4-thujanol, but the amount of this compound in bark decreases with tree age. Trans-4-thujanol acts as an efficient repellent for the bark beetle Ips typographus. & Context The spruce bark beetle, Ips typographus, is an economically significant pest of Norway spruce (Picea abies) that preferentially infests and kills old trees. & Aims We looked for spruce volatiles that were perceivable by I. typographus and that differed as the host tree aged. & Methods Bark beetles were collected in the wild. Bark samples from spruce trees of different age were hydrodistilled. Gas chromatography-electroantennogram detection (GC-EAD) was used to identify which compounds induced beetle olfactory responses. These were identified by gas chromatography-mass spectrometry (GC-MS). Behavioural responses of bark beetles were tested using a Y-tube olfactometer. & Results Several EAD peaks were recorded, of which trans-4-thujanol was consistently active and could be identified chemically unequivocally. The antennae of I. typographus females responded to a lower dosage of the compound than males, but both sexes were repelled by it. The bark of 10-year-old spruce trees contained 3 times more trans-4-thujanol than that of 35-40-year-old trees, 27 times more than that of 70-to 80-year-old trees, and 200 times more than that of 120-year-old trees. & Conclusions Trans-4-thujanol is a bioactive compound in Norway spruce bark that varies in amount with tree age and affects spruce bark beetle behaviour under laboratory conditions. It is suggested that trans-4-thujanol might play a role in both spruce tree defence and tree choice by beetles.

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Section: Gas Chromatography-electroantennogram Detectionmentioning

confidence: 99%

Electrophysiological and behavioural responses of Ips typographus (L.) to trans-4-thujanol—a host tree volatile compound

Blažytė‐Čereškienė

Apšegaitė

Radžiūtė

et al. 2015

Annals of Forest Science

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“…Antennal responses to nonhost leaf and bark volatiles have been found by using the coupled gas chromatography-electroantennographic detection (GC-EAD) or GC-SCR (single cell recording) techniques in over 10 species of bark beetles (Tømmera˚s & Mustaparta, 1989;Tømmera˚s & Mustaparta, 1989;Huber et al, 2000a;Zhang et al, 2000), two cerambycid beetles (Barata et al, 2000;Suckling et al, 2001) and a bark tortrix moth (McNair et al, 2000). For example, in GC-EAD analyses of Betula pendula Roth, B. pubescens Ehrh and Populus tremula L. leaf and bark volatiles, the antennae of I. typographus strongly responded to C 6 -alcohols (GLVs): 1-hexanol and (Z)-3-hexen-1-ol from both leaves and bark, and (E)-2-hexen-1-ol from the nonhost intact leaves (Zhang et al, 1999a and to trans-conophthorin (tC) and C 8 -alcohols: 3-octanol and 1-octen-3-ol from the nonhost bark .…”

Section: Introductionmentioning

confidence: 99%

Interruption of aggregation pheromone in Ips typographus (L.) (Col. Scolytidae) by non‐host bark volatiles

Zhang

2003

Agri and Forest Entomology

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1 The antennally active nonhost bark volatiles (NHVs): trans-conophthorin (tC), C 6 -alcohols (green leaf volatiles; GLVs) and C 8 -alcohols, were tested for their ability to reduce attraction of the spruce bark beetle Ips typographus (L) (Col. Scolytidae) to its pheromone sources in both laboratory walking bioassy and field trapping experiments. 2 In the walking bioassay with I. typographus females, individual NHVs such as tC, 3-octanol and 1-octen-3-ol, and the unsuitable host signal, verbenone (Vn), were inactive at the doses tested. However, the blend of C 6 -alcohols (3GLVs) and all the binary, ternary, or quarternary blends significantly reduced the female attraction to the pheromone sources. 3 In the field trapping experiments, individual NHV signals (tC, C6-alcohols and C 8 -alcohols) all reduced catch of I. typographus in pheromone-baited traps, with their inhibitory effects similar to that of the known inhibitor, Vn. The binary, ternary or quarternary combinations of these NHV signals or Vn, all caused significantly stronger reductions in trap catches than the individual signals. The blends showed similar levels of interruption, except the binary blend of C 8 -alcohols (2C8OH) and Vn. 4 Difference in trapping mechanism between pipe traps (attraction and landing) and Lindgren funnel traps (attraction) did not affect the pattern of inhibition of these active NHV signals and Vn. 5 These behaviourally active nonhost volatiles and Vn might be used effectively to protect spruce trees or stands against attacks by I. typographus.

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“…Other reports showed similar disruption by alcohols, with the two most effective being (Z)-3-hexen-1-ol and (E)-2-hexen-1-ol [25]. 1-Octen-3-ol was not only identified in the bark volatiles of European birch and aspen [30,31] but also identified in females of D. ponderosae, D. rufipennis, and D. pseudotsugae [14]. Further field tests found that 1-octen-3-ol was repellent to all three Dendroctonus spp.…”

Section: Discussionmentioning

confidence: 52%

Réponses électrophysiologiques et comportementales de Dendroctonus valens à des composés volatils non-hôtes

2007

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-Non-host volatiles (NHVs) that are often reported as being disruptive to coniferophagous bark beetles were tested for both electrophysiological and behavioral effects on the red turpentine beetle, Dendroctonus valens LeConte (Coleoptera: Curculionidae: Scolytinae), which was accidentally introduced into China in the mid-1980's. All NHVs tested elicited dose-dependent antennal responses by D. valens. In Y-tube olfactometer trials, D. valens were repelled by NHVs tested. When NHVs were added to a kairomone blend, responses of D. valens were significantly inhibited. Further field trapping experiments showed that attraction of D. valens to kairomone baited traps was reduced by all individual NHVs, with reductions ranging from 26.3 to 70%. 1-Octen-3-ol, (Z)-3-hexen-1-ol, and (E)-2-hexen-1-ol were the three most effective NHVs, significantly reducing D. valens to kairomonebaited traps by 69.5, 68.3 and 66.0%, respectively. In the development and implementation of a semiochemical-based management programme for D. valens, NHVs may have considerable potential for disrupting the beetle's ability to locate suitable hosts.non-host volatiles / red turpentine beetle / electroantennograms / olfactory response / field trapping Résumé -Réponses électrophysiologiques et comportementales de Dendroctonus valens à des composés volatils non-hôtes. Au cours de cette étude, on a testé les effets de composés volatils non hôtes, souvent considérés dans la littérature comme pouvant affecter la reconnaissance de l'hôte chez les scolytes des conifères, sur les réponses électro-physiologiques et le comportement du scolyte Dendroctonus valens LeConte (Coleoptera : Curculionidae : Scolytinae), espèce introduite accidentellement en Chine depuis le milieu des années 1980. Tous les composés testés ont généré des réponses antennaires, dépendant de la dose. Dans des tests en olfactomètre en Y, on a observé une plus ou moins grande répulsion à certains composés. En particulier, les réponses au 1-octen-3-ol, au 1-hexanol, à l' hexanal et au 3-octanol ont été très faibles. Des expérimentations de terrain ont ensuite montré que l'attraction sur D. valens de pièges appâtés en kairomone a été réduite par l'adjonction de chacun des composés non-hôtes, cette réduction variant de 26.3 à 70 %. Parmi ces composés, le 1-octen-3-ol, le (Z)-3-hexen-1-ol et le (E)-2-hexen-1-ol ont été les plus efficaces, engendrant respectivement une réduction des captures de 69.5, 68.3 et 66.0 %. L'utilisation de composés volatils non-hôtes pour induire une confusion dans le choix de l'hôte représente donc un potentiel considérable pour le développement d'un programme de gestion des populations de D. valens, basé sur l'utilisation de produits semio-chimiques.scolyte / électro-antennogramme / réponse olfactive / composés volatiles non-hôtes / piégeages de terrain

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Bark volatiles from nonhost angiosperm trees of spruce bark beetle, Ips typographus (L.) (Coleoptera: Scolytidae): Chemical and electrophysiological analysis

Cited by 80 publications

References 42 publications

Electrophysiological and behavioural responses of Ips typographus (L.) to trans-4-thujanol—a host tree volatile compound

Electrophysiological and behavioural responses of Ips typographus (L.) to trans-4-thujanol—a host tree volatile compound

Interruption of aggregation pheromone in Ips typographus (L.) (Col. Scolytidae) by non‐host bark volatiles

Réponses électrophysiologiques et comportementales de Dendroctonus valens à des composés volatils non-hôtes

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