Exploiting Behavioral Disparities Among Predators and Prey to Selectively Remove Pests: Maximizing the Ratio of Bark Beetles to Predators Removed During Semiochemically Based Trap-Out

Aukema, Brian H.; Dahlsten, Donald L.; Raffa, Kenneth F.

doi:10.1603/0046-225x-29.3.651

Cited by 60 publications

(47 citation statements)

References 48 publications

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“…Some semiochemicals pose a risk of inducing outbreaks of non-target species, and some, such as trans-conophthorin, are prohibitively expensive. Others show promise for pest control but have unacceptable effects on natural enemy complexes [1]. The optimum blend of semiochemicals should be composed of the simplest blend of the least expensive components with the broadest spectrum of behavioral activity for pest insects, while having the least detrimental impact on non-target biota.…”

Section: Discussionmentioning

confidence: 99%

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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Section: Discussionmentioning

confidence: 99%

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

2007

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“…For pheromone traps against bark beetles it was calculated that the Nemosoma elongatum individuals caught in the traps would have eaten a multiple of the number of bark beetles caught in these traps (Baier 1991;Wigger 1993;Schumacher and Pohris 2000). Optimised blends of semiochemicals and application times may minimise such detrimental effects (Raffa 1991;Aukema et al a 2000).…”

Section: Utilisation Of Parasitoids and Predators In Biological Contrmentioning

confidence: 99%

Research on Parasitoids and Predators of Scolytidae – A Review

Kenis

Wermelinger

Grégoire

2007

Bark and Wood Boring Insects in Living Trees in Europe, a Synthesis

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“…Together, they represent approximately 79% of all predators sampled in funnel traps arriving to trees being colonized by this herbivore (Aukema et al 2000b). Both are highly effective at exploiting the aggregation pheromones of I. pini to locate prey (Raffa and Klepzig 1989;Herms et al 1991;Aukema et al 2000aAukema et al , 2000bAyres et al 2001). For example, T. dubius has been shown to be four times more attracted to I. pini colonizing red pine, Pinus resinosa Aiton, than is this herbivore to itself (Aukema et al 2000b).…”

Section: Study Animalsmentioning

confidence: 99%

Density-dependent effects of multiple predators sharing a common prey in an endophytic habitat

2004

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Multiple predator species feeding on a common prey can lead to higher or lower predation than would be expected by simply combining their individual effects. Such emergent multiple predator effects may be especially prevalent if predators share feeding habitat. Despite the prevalence of endophagous insects, no studies have examined how multiple predators sharing an endophytic habitat affect prey or predator reproduction. We investigated density-dependent predation of Thanasimus dubius (Coleoptera: Cleridae) and Platysoma cylindrica (Coleoptera: Histeridae) on a bark beetle prey, Ips pini (Coleoptera: Scolytidae), in a laboratory assay. I. pini utilize aggregation pheromones to group-colonize and reproduce within the stems of conifers. T. dubius and P. cylindrica exploit these aggregation pheromones to arrive simultaneously with the herbivore. Adult T. dubius prey exophytically, while P. cylindrica adults enter and prey within the bark beetle galleries. Larvae of both predators prey endophytically. We used a multiple regression analysis, which avoids confounding predator composition with density, to examine the effects of varying predator densities alone and in combination on herbivore establishment, herbivore reproduction, and predator reproduction. Predators reduced colonization success by both sexes, and decreased I. pini reproduction on a per male and per female basis. The combined effects of these predators did not enhance or reduce prey establishment or reproduction in unexpected manners, and these predators were entirely substitutable. The herbivore's net replacement rate was never reduced significantly below one at prey and predator densities emulating field conditions. Similar numbers of each predator species emerged from the logs, but predator reproduction suffered from high intraspecific interference. The net replacement rate of P. cylindrica was not affected by conspecifics or T. dubius. In contrast, the net replacement rate of T. dubius decreased with the presence of conspecifics or P. cylindrica. Combinations of both predators led to an emergent effect, a slightly increased net replacement rate of T. dubius. This may have been due to predation by larval T. dubius on pupal P. cylindrica, as P. cylindrica develops more rapidly than T. dubius within this shared habitat.

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Exploiting Behavioral Disparities Among Predators and Prey to Selectively Remove Pests: Maximizing the Ratio of Bark Beetles to Predators Removed During Semiochemically Based Trap-Out

Cited by 60 publications

References 48 publications

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

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

Research on Parasitoids and Predators of Scolytidae – A Review

Density-dependent effects of multiple predators sharing a common prey in an endophytic habitat

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