Response of Torymus sinensis, a parasitoid of the gallforming Dryocosmus kuriphilus, to olfactory and visual cues

Graziosi, Ignazio; Rieske, Lynne K.

doi:10.1016/j.biocontrol.2013.07.012

Cited by 25 publications

(17 citation statements)

References 36 publications

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“…The emergence is synchronized with the budburst of sweet chestnut and development of new galls [24]. Females locate the host with a combination of visual and olfactory stimuli from fresh galls and chestnut foliage [32] which could also explain its specificity to D. kuriphilus. Parasitoid larva feeds ectoparasitically and pupates in late winter the following year.…”

Section: Biology and Some Behavioural Traits Of Torymus Sinensismentioning

confidence: 99%

Biological Control of the Invasive Dryocosmus kuriphilus (Hymenoptera: Cynipidae) - an Overview and the First Trials in Croatia

Matošević¹,

Quacchia²,

Kriston³

et al. 2014

SEEFOR

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Section: Biology and Some Behavioural Traits Of Torymus Sinensismentioning

confidence: 99%

Biological Control of the Invasive Dryocosmus kuriphilus (Hymenoptera: Cynipidae) - an Overview and the First Trials in Croatia

Matošević¹,

Quacchia²,

Kriston³

et al. 2014

SEEFOR

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“…This result further suggests that the volatiles produced by T. leucotreta larvae feeding on fruit play a key role in the host location behaviour of A. bishopi parasitoids. Host induced plant volatiles have been reported as major attractants of parasitoids to their hosts (Mattiacci et al 1999;Ero et al 2011;Kaplan 2012;McCormick et al 2012;Graziosi and Rieske 2013). Examples of parasitoids that mainly rely on olfactory cues for locating their hosts, include Hyssopus pallidus (Askew) (Hymenoptera: Eulophidae), a larval parasitoid of, Cydia pomonella L. (Lepidoptera: Tortricidae) (Mattiacci et al 1999), Psyttalia concolor, an endoparasitoid of Ceratitis capitata, (1) b Fig.…”

Section: Discussionmentioning

confidence: 98%

“…Parasitoids that did not make a choice within 5 min (i.e. not leaving the no-choice region) were excluded from the data (Graziosi and Rieske 2013). After testing five wasps, the fabric on the flight tunnel was washed with detergent in warm water and rinsed in distilled water.…”

Section: Flight Tunnel Setupmentioning

confidence: 99%

“…During each trial, a glass vial (20 ml) containing an individual mated female parasitoid was placed under the Y-tube base arm and immediately opened to allow the wasp to walk up towards the two side arms. Each parasitoid was observed and scored as having made a choice if it crossed the choice line (drawn at 30 mm from the arm junction) on either arm (Graziosi and Rieske 2013). The choice of the arm after crossing the choice line was noted and recorded.…”

Section: Olfactometer Trialsmentioning

confidence: 99%

“…The choice of the arm after crossing the choice line was noted and recorded. Parasitoids that did not respond within 10 min were discarded and not included in the analysis (Graziosi and Rieske 2013;Johnson et al 2014). After each trial, was a Y-shaped glass tube with cylindrical arms (inner diameter: 250 mm and length of arm: 150 mm).…”

Section: Olfactometer Trialsmentioning

confidence: 99%

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Agathis bishopi (Hymenoptera: Braconidae) as a Potential Tool for Detecting Oranges Infested with Thaumatotibia leucotreta (Lepidoptera: Tortricidae)

et al. 2015

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In South Africa, Thaumatotibia leucotreta is a key pest of citrus impacting its production and trade. Detection of newly infested fruit by visual inspection is challenging and poses a risk of packing infested with healthy fruit for export. Agathis bishopi is a larval endoparasitoid of T. leucotreta, attacking early larval instars. Understanding how A. bishopi parasitoids locate fruit infested with their host is of interest for developing an efficient detector for T. leucotreta infested fruit. The response of female adult A. bishopi parasitoids to olfactory and visual cues associated with T. leucotreta infested fruit were evaluated using a Y-tube olfactometer and flight tunnel. Agathis bishopi parasitoids were strongly attracted to infested fruit over healthy fruit, either when only olfactory or combinations of visual and olfactory cues were offered. Among the four synthetic compounds tested, D-limonene and ocimene elicited a strong attraction to parasitoids with response rates of 92 % and 72 % respectively. A blend of four synthetic compounds simulating T. leucotreta infested fruit odour equally elicited strong attraction to parasitoids (84 % response rate). Attraction of parasitoids to infested fruit cues was heightened by prior experience, suggesting the occurrence of associative learning. Results from this study indicate that A. bishopi parasitoids mainly rely on olfactory cues in host habitat location and that D-limonene and ocimene are the major attractants in infested fruit volatiles. These findings and the potential for manipulating A. bishopi for detection of infested fruit in the packhouse are discussed.

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Morphology and distribution of sensilla on the antennae and ovipositor of the Hymenopteran parasitoid Pseudotorymus jaapiellae Yang et Chen

Zhu

Liu

et al. 2021

Microscopy Res & Technique

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Pseudotorymus jaapiellae is an important ectoparasitoid of the larvae of Gephyraulus lycantha, a serious gall-forming pest that devastates wolfberry, Lycium barbarum, in Northwest China. To provide requisite background for our ongoing research on the mechanisms of P. jaapiellae's host location and subsequent oviposition, we used scanning electron microscopy to describe the external morphologies and distributions of sensilla on their antennae and ovipositors. The geniculate antennae of both male and female P. jaapiellae were each composed of a scape with a basal radiculum, a pedicel, an anellum and a flagellum. We identified nine morphological sensilla types on the antennae of both sexes, including three sensilla trichodea (ST), one sensillum basiconicum (SB), two sensilla chaetica (SCh), one sensillum placodeum (SP), one sensillum coeloconicum (SCo), and one sensillum campaniformia (SCa). Females had significantly more ST I and SP than males had, but males had more ST III than did females. We observed six types of sensilla on the ovipositor, including three ST, one SB, and two SCa. ST II, ST IV and SB II were on the sheath, whereas ST V and the SCa were on the stylus. Finally, the possible biological functions of these sensilla were discussed according to their morphology and ultrastructure. These results provide an important basis for further study on chemical communication between P. jaapiellae and their host, and contribute to the development of a biological control program for G. lycantha, using the parasitoid, P. jaapiellae.

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Response of Torymus sinensis, a parasitoid of the gallforming Dryocosmus kuriphilus, to olfactory and visual cues

Cited by 25 publications

References 36 publications

Biological Control of the Invasive Dryocosmus kuriphilus (Hymenoptera: Cynipidae) - an Overview and the First Trials in Croatia

Biological Control of the Invasive Dryocosmus kuriphilus (Hymenoptera: Cynipidae) - an Overview and the First Trials in Croatia

Agathis bishopi (Hymenoptera: Braconidae) as a Potential Tool for Detecting Oranges Infested with Thaumatotibia leucotreta (Lepidoptera: Tortricidae)

Morphology and distribution of sensilla on the antennae and ovipositor of the Hymenopteran parasitoid Pseudotorymus jaapiellae Yang et Chen

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