Taxonomy and evolution of putative thelytokous species of <i><scp>L</scp>eptopilina</i> (<scp>H</scp>ymenoptera: <scp>F</scp>igitidae) from <scp>J</scp>apan, with description of two new species

Wachi, Nakatada; Nomano, Fumiaki Y.; Mitsui, Hideyuki; Kasuya, Nazuki; Kimura, Masahito T.

doi:10.1111/ens.12089

Cited by 14 publications

(18 citation statements)

References 36 publications

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“…The same Ganaspis cf. brasiliensis is the main larval parasitoid of D. suzukii in South Korea (Daane et al 2016), Japan (Kasuya et al 2013a; Wachi et al 2015; Matsuura et al 2017) and China (Girod et al 2018b), where it probably also attacks two other fruit-inhabiting drosophilids, D. pulchrella and D. subpulchrella , the two sister species of D. suzukii .…”

Section: Discussionmentioning

confidence: 99%

Host specificity of Asian parasitoids for potential classical biological control of Drosophila suzukii

Girod¹,

Lierhmann²,

Urvois³

et al. 2018

J Pest Sci

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The Asian spotted wing drosophila, Drosophila suzukii, has recently become a serious pest of soft fruits in Europe. Classical biological control through the introduction of larval parasitoids from its native range in Asia is presently being considered. However, host specificity of potential biological control agents has to be determined to avoid releasing species that may have unintended non-target impacts. Larvae of six different European non-target fly species and the target D. suzukii were exposed either on diet or blueberries to three Asian larval parasitoids, Asobara japonica, Leptopilina japonica, and Ganaspis cf. brasiliensis, and one European species, Leptopilina heterotoma. Asobara japonica showed the lowest specificity, attacking and developing in all Drosophilidae. Leptopilina japonica successfully parasitized two non-target Drosophilidae, D. melanogaster and D. subobscura, with one singly progeny emerging from D. immigrans. Ganaspis cf. brasiliensis had the highest level of specificity but variations occurred between two geographical populations tested. A Japanese population was strictly specific to D. suzukii, whereas another population from China parasitized D. suzukii, D. melanogaster and sporadically D. subobscura. The European L. heterotoma successfully developed in D. melanogaster, D. subobscura and occasionally in D. immigrans, but nearly all eggs and larvae in D. suzukii were encapsulated. These results show that Ganaspis cf. brasiliensis is the species with the highest potential for biological control, but more studies are needed on its taxonomic status and the existence of biotypes or cryptic species varying in their specificity before field releases can be conducted in Europe.Electronic supplementary materialThe online version of this article (10.1007/s10340-018-1003-z) contains supplementary material, which is available to authorized users.

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Section: Discussionmentioning

confidence: 99%

Host specificity of Asian parasitoids for potential classical biological control of Drosophila suzukii

Girod¹,

Lierhmann²,

Urvois³

et al. 2018

J Pest Sci

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“…Consequently, there is an urgent need to revise the taxonomy of the G. brasiliensis complex as this taxonomic uncertainty may prevent its use for biological control. Asobara japonica and L. japonica are both known to attack D. suzukii and other Drosophila species in Asia Guerrieri, Giorgini, Cascone, Carpenito, & van Achterberg, 2016;Ideo et al, 2008;Mitsui & Kimura, 2010;Novković et al, 2011;Wachi, Nomano, Mitsui, Kasuya, & Kimura, 2015), but for these species too, the occurrence of biotypes or cryptic species, potentially showing different levels of host specificity, should be further investigated. Host range tests are currently underway with these Asian parasitoids and European Drosophila spp.…”

Section: F I G U R Ementioning

confidence: 99%

Development of Asian parasitoids in larvae Of Drosophila Suzukii feeding on blueberry and artificial diet

Girod

Rossignaud

Haye

et al. 2018

J Applied Entomology

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In just a few years, the Asian fly Drosophila suzukii has invaded several continents and has become a very serious pest of many fruit crops worldwide. Current control methods rely on chemical insecticides or expensive and labour-intensive cultural practices. Classical biological control through the introduction of Asian parasitoids that have co-evolved with the pest may provide a sustainable solution on condition that they are sufficiently specific to avoid non-target effects on local biodiversity. Here, we present the first study on the development of three larval parasitoids from China and Japan, the Braconidae Asobara japonica and the Figitidae Leptopilina japonica and Ganaspis sp., on D. suzukii. The Asian parasitoids were compared with Leptopilina heterotoma, a common parasitoid of several Drosophilidae worldwide. The three Asian species were successfully reared on D. suzukii larvae in both, blueberry and artificial diet, in contrast to L. heterotoma whose eggs and larvae were encapsulated by the host larvae. All parasitoids were able to oviposit one day after emergence.Asobara japonica laid as many eggs in larvae feeding in blueberry as in artificial diet, whereas L. heterotoma oviposited more in larvae on the artificial diet and the Asian Figitidae oviposited more in larvae feeding on blueberry. Ganaspis sp. laid very few eggs in larvae in the artificial diet, suggesting that it may be specialized in Drosophila species living in fresh fruits. These data will be used for the development of a host range testing to assess the suitability of Asian parasitoids as biological control agents in invaded regions. K E Y W O R D SAsobara, Ganaspis, invasive species, Leptopilina, pre-oviposition period, spotted wing drosophila short development time of the fly, they have to be applied regularly and can cause severe environmental and health concerns (Bruck et al., 2011;Cuthbertson, Collins, Blackburn, Audsley, & Bell, 2014;Sampson, Werle, Stringer, & Adamczyk, 2017;Smirle, Zurowski, Ayyanath, Scott, & MacKenzie, 2017;Van Timmeren & Isaacs, 2013).Cultural management such as the use of insect-proof nets, mass trapping and removal or solarization of infested fruits are also used, but these strategies are expensive and labour-intensive and have to be adjusted to each type of fruit crop or cultivation system (Haye et al., 2016). New control techniques focusing on long-term management are therefore urgently needed. As wild host plants constitute a large reservoir of individuals that can potentially reinvade field crops, controlling the pest at a landscape level is essential.A number of natural enemies are known to have an impact on the dynamics and regulation of Drosophila spp. and may provide an area-wide control of fly populations (Carton, Bouletreau, Lenteren, & Alphen, 1986;Fleury, Gibert, Ris, & Allemand, 2009).Two generalist pupal parasitoids, Trichopria drosophilae Perkins (Hymenoptera, Diapriidae) and Pachycrepoideus vindemmiae (Rondani) (Hymenoptera, Pteromalidae), are found attacking D. suzukii worldwide ...

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“…; Wachi et al. ), raising the question as to whether susceptibility to Spiroplasma (poulsonii clade, at least) is a universal feature of larval parasitoids of Drosophila . Knowledge on the degree of generality or specificity of the Spiroplasma wasp interference mechanism will offer insight into the selective pressures acting on all members of this interaction and perhaps contribute to a more comprehensive view of the forces that drive Spiroplasma prevalence in natural populations.…”

Section: Introductionmentioning

confidence: 99%

Independent origins of resistance or susceptibility of parasitic wasps to a defensive symbiont

Mateos

Winter

et al. 2016

Ecology and Evolution

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Insect microbe associations are diverse, widespread, and influential. Among the fitness effects of microbes on their hosts, defense against natural enemies is increasingly recognized as ubiquitous, particularly among those associations involving heritable, yet facultative, bacteria. Protective mutualisms generate complex ecological and coevolutionary dynamics that are only beginning to be elucidated. These depend in part on the degree to which symbiont‐mediated protection exhibits specificity to one or more members of the natural enemy community. Recent findings in a well‐studied defensive mutualism system (i.e., aphids, bacteria, parasitoid wasps) reveal repeated instances of evolution of susceptibility or resistance to defensive bacteria by parasitoids. This study searched for similar patterns in an emerging model system for defensive mutualisms: the interaction of Drosophila, bacteria in the genus Spiroplasma, and wasps that parasitize larval stages of Drosophila. Previous work indicated that three divergent species of parasitic wasps are strongly inhibited by the presence of Spiroplasma in three divergent species of Drosophila, including D. melanogaster. The results of this study uncovered two additional wasp species that are susceptible to Spiroplasma and two that are unaffected by Spiroplasma, implying at least two instances of loss or gain of susceptibility to Spiroplasma among larval parasitoids of Drosophila.

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Taxonomy and evolution of putative thelytokous species of Leptopilina (Hymenoptera: Figitidae) from Japan, with description of two new species

Cited by 14 publications

References 36 publications

Host specificity of Asian parasitoids for potential classical biological control of Drosophila suzukii

Host specificity of Asian parasitoids for potential classical biological control of Drosophila suzukii

Development of Asian parasitoids in larvae Of Drosophila Suzukii feeding on blueberry and artificial diet

Independent origins of resistance or susceptibility of parasitic wasps to a defensive symbiont

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