Negative evidence of parthenogenesis induction by<i>Wolbachia</i>in a gallwasp species,<i>Dryocosmus kuriphilus</i>

Zhu, Dao‐Hong; He, Yanping; Yong-sheng, Fan; Ma, Minmin; Peng, Deliang

doi:10.1111/j.1570-7458.2007.00578.x

Cited by 32 publications

(38 citation statements)

References 27 publications

(47 reference statements)

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“…kuriphilus is native to China and has been reported in Japan in 1941 , in Korea , in the United States in 1974 , in Nepal in 1999 (Abe et al, 2007) and in Europe (Italy) (Brussino et al, 2002). It feeds on C. mollissima Blume (Chinese chestnut) (Zhu et al, 2007), C. crenata Sieb. et Zucc.…”

Section: Global Occurrencementioning

confidence: 99%

Risk assessment of the oriental chestnut gall wasp, Dryocosmus kuriphilus for the EU territory and identification and evaluation of risk management options

2010

EFS2

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The Panel on Plant Health was requested by the European Commission to deliver a scientific opinion on the risk posed by the oriental chestnut gall wasp, Dryocosmus kuriphilus to the EU territory and to identify and evaluate risk management options. Additional analyses were conducted by the Panel to a) determine the distribution of the endangered area within the EU territory; b) investigate the pattern and rate of pest diffusion and c) consider the environmental risk of introduction of the biological control agent Torymus sinensis identified as a potential management option. The Panel concluded in its assessment that a) Castanea plants for intended planting represent the main pathway for entry of D. kuriphilus to the EU; b) D. kuriphilus has a very high potential for establishment in the EU and the climate is suitable wherever Castanea sativa is grown in southern, central and western Europe; c) the average rate of spread of D. kuriphilus is estimated as 8 km/yr; d) spread within the EU is likely, due to adult dispersal by flight and the movement of plants containing eggs and larvae which remain undetected within dormant buds; e) the potential effects on fruit yield reduction are considered moderate and the environmental impact in Castanea woodland is considered as low; f) all EU chestnut production is endangered but the areas of fruit production with the highest degree day accumulations where D. kuriphilus is absent, e.g. in northern Portugal, northern Spain and south-west France, are identified as particularly at risk; g) management options to reduce likelihood of introduction and spread consist of certifying Castanea planting material from pest free areas/places of production; h) classical biological control and plant varietal resistance are identified as management options to reduce the magnitude of impact. KEY WORDSCastanea spp., Dryocosmus kuriphilus, EU territory, management options, oriental chestnut gall wasp, risk assessment. SUMMARYFollowing a request from the European Commission, the Panel on Plant Health was asked to deliver a scientific opinion on the risk posed by the oriental chestnut gall wasp, Dryocosmus kuriphilis Yasumatsu to the EU territory. It was asked to identify risk management options and to evaluate their efficiency in reducing the risk to plant health posed by this organism.The Panel conducted its assessment following the EFSA Guidance on a harmonised framework for pest risk assessment 4 . Additional analyses were conducted to a) determine the distribution of Castanea spp. and the endangered area within the EU territory b) investigate the mechanisms of pest diffusion based on historical records following first introduction of the pest into the EU in 2002 and c) consider the environmental risk of introduction of the biological control agent Torymus sinensis identified as a potential management option to reduce the magnitude of impact of D. kuriphilus.From its analysis of the evidence, the Panel reached the following conclusions:• The movement of Castanea spp. as living parts of...

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Section: Global Occurrencementioning

confidence: 99%

Risk assessment of the oriental chestnut gall wasp, Dryocosmus kuriphilus for the EU territory and identification and evaluation of risk management options

2010

EFS2

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“…(Abe et al, 2007). The species is univoltine and thelytokous (Zhu et al, 2007). Adults lay eggs in chestnut buds in early summer, and larvae remain latent until buds expand the following spring.…”

Section: Introductionmentioning

confidence: 99%

Chemical Cues for Host Location by the Chestnut Gall Wasp, Dryocosmus kuriphilus

2010

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Dryocosmus kuriphilus is one of the most damaging pests of Castanea spp. Behavioral, chemical, and electrophysiological investigations were employed to examine the role of plant volatiles for host location by this thelytokuos cynipid. Y-tube olfactometer bioassays showed that adult wasps are significantly attracted by C. sativa twigs with at least 1-hr-old mechanical damage. Odors of undamaged host seedlings, intact twigs, and twigs with a fresh mechanical damage were not attractive. Wasps were repelled by plant materials of the non-host Prunus laurocerasus. Fourteen compounds, mainly general green leaf volatiles, were identified in the head-space of attractive host plant twigs by gas chromatography coupled to mass spectrometry. All compounds elicited dose-dependent antennal responses in adult wasps. A synthetic blend comprising all identified compounds in the same ratio as in the attractive host source induced significant positive responses in Y-tube olfactometer bioassays. The study gives a basis for future identification of host plant attractants that could contribute to semiochemical-based monitoring and management practices of this pest.

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“…Following its arrival, CGW colonized almost all of the European area of Castanea sativa Mill. in North America, and C. sativa in Europe; Payne, 1978;Brussino et al, 2002;Zhu et al, 2007]. Like other cynipids (except inquilines), CGW develops on its host plant by inducing gall formation using complex physiological mechanisms resulting in a high level of ecological specialization (Shorthouse et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

“…The chestnut gall wasp Dryocosmus kuriphilus Yasumatsu (Hymenoptera: Cynipidae) (hereafter CGW) originates from China where it is known to develop on several species of Castanea (Fagaceae), e.g., Castanea crenata Siebold & Zucc. and Castanea molissima Blume (Zhu et al, 2007). In the 1940s, it was reported in Japan (Murakami et al, 1980) and after several other introduction events between 1941 and 1999 (Japan, Korea, USA, and Nepal), it was reported in Europe in 2002 (Brussino et al, 2002), where Castanea-based forests covered around 2.5 million ha distributed across 17 countries (Conedera et al, 2016) and where chestnut production and consumption is of notable importance.…”

Section: Introductionmentioning

confidence: 99%

“…Borkh. in North America, and C. sativa in Europe; Payne, 1978;Brussino et al, 2002;Zhu et al, 2007]. According to either the tree's vitality or the density of CGW, galls can develop either on the leafwith quite low impact on the tree's developmentor on buds, with severe impact on the development of leaves and twigs, and on the overall tree architecture (Kato & Hijii, 1997;Gehring et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Early population dynamics in classical biological control: establishment of the exotic parasitoid Torymus sinensis and control of its target pest, the chestnut gall wasp Dryocosmus kuriphilus, in France

Borowiec

Thaon

Brancaccio

et al. 2018

Entomologia Exp Applicata

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In response to the introduction and spread of the chestnut gall wasp Dryocosmus kuriphilus Yasumatsu (Hymenoptera: Cynipidae) in metropolitan France, including Corsica, the exotic parasitoid Torymus sinensis Kamijo (Hymenoptera: Torymidae) was deliberately introduced in more than 50 locations covering most of the areas of chestnut production. To test the impact of propagule pressure (i.e., the number and size of introductions) on establishment success and post‐release dynamics, the introductions were done according to three experimental modalities: (1) a single introduction of 100 females, (2) two sequential introductions of 50 females, or (3) a single introduction of 1 000 females. Post‐release surveys demonstrated a very high local establishment of T. sinensis, regardless of the introduction modality. Post‐introduction dynamics were found to follow a two‐phase process. First, early dynamics were characterized by an exponential growth of T. sinensis populations without a significant decrease in D. kuriphilus populations. Later, middle‐term dynamics indicated a global decrease in both D. kuriphilus and T. sinensis populations. Quite surprisingly, propagule pressure had a limited effect on post‐introduction dynamics, with a lasting demographic advantage for the largest introductions, but no influence of the number of introductions. Finally, site connectivity had a positive effect on T. sinensis population size, suggesting successful colonization and establishment at a wide spatial scale beyond the introduction sites. In addition, we observed that some T. sinensis exhibited a very short developmental time compared to the majority of the emerged individuals, which may be interpreted as a diversified bet hedging strategy against environmental stochasticity. These findings confirm the strong potential of T. sinensis for successful establishment and sustainable control of the chestnut gall wasp in Europe.

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Negative evidence of parthenogenesis induction byWolbachiain a gallwasp species,Dryocosmus kuriphilus

Cited by 32 publications

References 27 publications

Risk assessment of the oriental chestnut gall wasp, Dryocosmus kuriphilus for the EU territory and identification and evaluation of risk management options

Risk assessment of the oriental chestnut gall wasp, Dryocosmus kuriphilus for the EU territory and identification and evaluation of risk management options

Chemical Cues for Host Location by the Chestnut Gall Wasp, Dryocosmus kuriphilus

Early population dynamics in classical biological control: establishment of the exotic parasitoid Torymus sinensis and control of its target pest, the chestnut gall wasp Dryocosmus kuriphilus, in France

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