Genetic differentiation of Ganaspis brasiliensis (Hymenoptera: Figitidae) from East and Southeast Asia

Nomano, Fumiaki Y.; Kasuya, Nazuki; Matsuura, Akira; Suwito, Awit; Mitsui, Hideyuki; Buffington, Matthew L.; Kimura, Masahito T.

doi:10.1007/s13355-017-0493-0

Cited by 48 publications

(82 citation statements)

References 25 publications

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“…Similar specificity was observed for G. xanthopoda associated with D. suzukii in Japan (Kasuya, Mitsui, Ideo et al, 2013), which was subsequently identified as G. brasiliensis (Nomano et al, 2017) and could be the same species or biotype as the one tested in this study. A Ganaspis sp.…”

Section: F I G U R Esupporting

confidence: 82%

“…Drosophila suzukii was obtained from a variety of wild fruits (e.g., The following parasitoids were collected in Asia in June 2015 and brought to the quarantine facilities of CABI in Delémont, Switzerland: (Buffington & Forshage, 2016), is likely a complex of cryptic species with different distributions and various degrees of specificity (Nomano et al, 2017).…”

Section: Collection and Rearing Of Drosophila Spp And Parasitoidsmentioning

confidence: 99%

“…reared from D. suzukii in South Korea was recently also identified as G. brasiliensis (Buffington & Forshage, 2016;Daane et al, 2016). However, Nomano et al (2017) suggest that G. brasiliensis is a complex of cryptic species. 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.…”

Section: F I G U R Ementioning

confidence: 99%

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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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Section: F I G U R Esupporting

confidence: 82%

Section: Collection and Rearing Of Drosophila Spp And Parasitoidsmentioning

confidence: 99%

Section: F I G U R Ementioning

confidence: 99%

See 1 more Smart Citation

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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“…(Beijing, China); (5) Asobara japonica Belokobylskij collected by sweeping over P. serrulata fruits (Tokyo, Japan). Ganaspis brasiliensis , which has been recorded from various continents (Buffington and Forshage 2016; Nomano et al 2017), is likely a complex of cryptic species with different distributions and various degrees of specificity (Nomano et al 2017). Until the taxonomic status of G. brasiliensis has been clarified with molecular methods, the two populations from China and Japan used in this study are referred to as Ganaspis cf.…”

Section: Methodsmentioning

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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“…In 2016, 20 populations belonging to the species Leptopilina heterotoma, L. boulardi, L . victoriae, and Ganaspis brasiliensis (Hymenoptera: Figitidae (Nomano et al., 2017)) were obtained from existing laboratory cultures or collected from the field (Supporting information Table S1). Wasp cultures were maintained at a temperature of 23°C, a relative humidity of 75%, and a photoperiod of L:D 16:8.…”

Section: Methodsmentioning

confidence: 99%

Variation in lipid synthesis, but genetic homogeneity, among Leptopilina parasitic wasp populations

Visser

Hance

Noël

et al. 2018

Ecology and Evolution

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Lipid synthesis can have a major effect on survival and reproduction, yet most insect parasitoids fail to synthesize lipids. For parasitic wasps in the genus Leptopilina, however, studies have suggested that there is intraspecific variation in the ability for lipid synthesis. These studies were performed on only few populations, and a large‐scale investigation of both lipogenic ability and population genetic structure is now needed. Here, we first examined lipogenic ability of nine Leptopilina heterotoma populations collected in 2013 and found that five of nine populations synthesized lipids. The 2013 populations could not be used to determine genetic structure; hence, we obtained another 20 populations in 2016 that were tested for lipogenic ability. Thirteen of 20 populations (all Leptopilina heterotoma) were then used to determine the level of genetic differentiation (i.e., haplotype and nucleotide diversity) by sequencing neutral mitochondrial (COI) and nuclear (ITS2) markers. None of the 2016 populations synthesized lipids, and no genetic differentiation was found. Our results did reveal a nearly twofold increase in mean wasp lipid content at emergence in populations obtained in 2016 compared to 2013. We propose that our results can be explained by plasticity in lipid synthesis, where lipogenic ability is determined by environmental factors, such as developmental temperature and/or the amount of lipids carried over from the host.

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Genetic differentiation of Ganaspis brasiliensis (Hymenoptera: Figitidae) from East and Southeast Asia

Cited by 48 publications

References 25 publications

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

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

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

Variation in lipid synthesis, but genetic homogeneity, among Leptopilina parasitic wasp populations

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