Detrimental effect of prior conditioning on host habitat location by Exeristes roborator

Wardle, A. R.; Borden, John H.

doi:10.1007/bf00368168

Cited by 14 publications

(5 citation statements)

References 12 publications

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“…In comparing our results with A. melinus to other studies, we must point out that most other studies emphasize associative learning of habitat cues (e.g. The efficacy of biological control may be enhanced by exploiting this phenomenon, especially when parasitoids are reared in the laboratory on host/diet combinations that differ from those that the parasitoid should encounter in the field (Wardle & Borden, 1986;Herard et al, 1988;Vet & Groenewold, 1990). Nevertheless, enhanced responsiveness of parasitoids to hosts after a brief exposure to innatelyrecognized cues has been demonstrated previously (reviewed by Lewis & Martin, 1990;Prokopy & Lewis, 1993), especially for parasitoids of Lepidoptera contacting their host's frass (Herard et al, 1988;Ding et al, 1989;Turlings et al, 1989).…”

Section: Discussionmentioning

confidence: 85%

“…Nevertheless, enhanced responsiveness of parasitoids to hosts after a brief exposure to innatelyrecognized cues has been demonstrated previously (reviewed by Lewis & Martin, 1990;Prokopy & Lewis, 1993), especially for parasitoids of Lepidoptera contacting their host's frass (Herard et al, 1988;Ding et al, 1989;Turlings et al, 1989). The efficacy of biological control may be enhanced by exploiting this phenomenon, especially when parasitoids are reared in the laboratory on host/diet combinations that differ from those that the parasitoid should encounter in the field (Wardle & Borden, 1986;Herard et al, 1988;Vet & Groenewold, 1990).…”

Section: Discussionmentioning

confidence: 89%

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Increased parasitization of California red scale in the field after exposing its parasitoid, Aphytis melinus, to a synthetic kairomone

Hare

Morgan

Nguyun

1997

Entomologia Exp Applicata

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The introduced parasitoid, Aphytis melinus DeBach (Hymenoptera: Aphelinidae), utilizes a kairomone, Ocaffeoyltyrosine, to recognize California red scale, Aonidiella aurantii (Maskell) (Homoptera: Diaspididae). Wasps used in augmentative release programs for California red scale on California citrus are reared on oleander scale, Aspidiotus nerii Bouché (Homoptera: Diaspididae), themselves reared on squash. Previous laboratory studies demonstrated that wasps reared on oleander scale but exposed to O-caffeoyltyrosine before bioassay more readily accepted California red scale covers for probing than wasps reared similarly but not exposed to O-caffeoyltyrosine. The goal of this study was to determine if wasps reared on oleander scale but exposed to O-caffeoyltyrosine actually parasitized a greater number of field-reared California red scale than unconditioned wasps. In order to distinguish between progeny of conditioned and unconditioned wasps in the field, we utilized two A. melinus strains that carried different electrophoretically distinguishable alleles. In half of the releases, Strain 'A' was conditioned to O-caffeoyltyrosine and Strain 'B' served as the control, while this pattern of conditioning was reversed for the remaining releases. Although there were differences in the rates of population growth of the two strains, whichever strain was the conditioned strain left a greater than expected number of progeny compared to the control strain in all comparisons. Exposure of A. melinus reared in commercial insectaries to O-caffeoyltyrosine prior to release may be a means to improve the effectiveness of such wasps in augmentative release programs to control California red scale.

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Section: Discussionmentioning

confidence: 85%

Section: Discussionmentioning

confidence: 89%

Increased parasitization of California red scale in the field after exposing its parasitoid, Aphytis melinus, to a synthetic kairomone

Hare

Morgan

Nguyun

1997

Entomologia Exp Applicata

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“…When reared on alternative host species, artificial diets or artificial rearing units, parasitoids may partly loose their capacity to find and exploit the natural pest species [48,49]. For example, it was shown [50] that prior experience of Exeristes roborator (Hymenoptera: Ichneumonidae) when reared in an artificial arena significantly altered the behavioural response of parasitoid females to their host, the European pine shoot moth, Rhyacionia buoliana (Lepidoptera: Tortricidae), when released in forests. The present study documents an original case of detrimental learning where a parasitoid learns to associate chemical cues from an unsuitable host, thereby re-enforcing a reproductive cul-de-sac (evolutionary trap).…”

Section: Plos Onementioning

confidence: 99%

Learning can be detrimental for a parasitic wasp

et al. 2021

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Animals have evolved the capacity to learn, and the conventional view is that learning allows individuals to improve foraging decisions. The parasitoid Telenomus podisi has been shown to parasitize eggs of the exotic stink bug Halyomorpha halys at the same rate as eggs of its coevolved host, Podisus maculiventris, but the parasitoid cannot complete its development in the exotic species. We hypothesized that T. podisi learns to exploit cues from this non-coevolved species, thereby increasing unsuccessful parasitism rates. We conducted bioassays to compare the responses of naïve vs. experienced parasitoids on chemical footprints left by one of the two host species. Both naïve and experienced females showed a higher response to footprints of P. maculiventris than of H. halys. Furthermore, parasitoids that gained an experience on H. halys significantly increased their residence time within the arena and the frequency of re-encounter with the area contaminated by chemical cues. Hence, our study describes detrimental learning where a parasitoid learns to associate chemical cues from an unsuitable host, potentially re-enforcing a reproductive cul-de-sac (evolutionary trap). Maladaptive learning in the T. podisi—H. halys association could have consequences for population dynamics of sympatric native and exotic host species.

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“…There has also been some research on pre‐release conditioning of parasitoids to either retain them near sites of release or focus their attacks (e.g. Wardle & Borden 1986; Keasar et al . 2001).…”

Section: Examplesmentioning

confidence: 99%

Why pest management needs behavioral ecology and vice versa

Roitberg

2007

Entomological Research

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Behavior manipulation is becoming an accepted tactic in pest management, however, there are many ways in which the approach can be improved. In this review, I explain how and why insect behavioral response to various stimuli can vary dramatically under different conditions and that it is this variable response that must be understood before behavior manipulation becomes widely accepted in pest management programs. I propose that entomologists use concepts from behavioral ecology to manipulate pest behavior in a predictable manner. The key is to study behaviors that maximize fitness in natural environments and then exploit these behaviors in agriculture. I provide examples from a range of behavior manipulation tactics, including use of attracticides, kairomone-mediated biological control, use of marking pheromones, and push-pull manipulation.

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Detrimental effect of prior conditioning on host habitat location by Exeristes roborator

Cited by 14 publications

References 12 publications

Increased parasitization of California red scale in the field after exposing its parasitoid, Aphytis melinus, to a synthetic kairomone

Increased parasitization of California red scale in the field after exposing its parasitoid, Aphytis melinus, to a synthetic kairomone

Learning can be detrimental for a parasitic wasp

Why pest management needs behavioral ecology and vice versa

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