Terminal-instar larval systematics and biology of west European species of Ormyridae associated with insect galls (Hymenoptera, Chalcidoidea)

Gómez, José Luís Graña; Nieves, María Hernández; Gayubo, Severiano F.; Nieves‐Aldrey, J. L.

doi:10.3897/zookeys.644.10035

Cited by 14 publications

(11 citation statements)

References 34 publications

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“…It is important to note that for some wasps, molecular characterization (Cytochrome Oxydase I) revealed the presence of probable cryptic species (Borowiec, unpubl. data), especially for Ormyrus nitidulus and O. pomaceus (Kaartinen et al 2010;Lotfalizadeh et al 2012;Goméz et al 2017). For this reason, specimens of Ormyrus were not identified at species level.…”

Section: Parasitoid Collectionmentioning

confidence: 99%

Plant neighbour identity and invasive pathogen infection affect associational resistance to an invasive gall wasp

et al. 2017

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Theory predicts that mixed forests are more resistant to native pests than pure forests (i.e. associational resistance) because of reduced host accessibility and increased top-down control by natural enemies. Yet, whether the same mechanisms also apply to invasive pests remains to be verified. We tested the hypothesis of associational resistance against the invasive Asian chestnut gall wasp (ACGW, Dryocosmus kuriphilus) by comparing ACGW infestation rates on chestnuts (Castanea sativa) in stands varying in species composition (chestnut alone or associated with oaks, pines or ashes). We investigated the effects of reduced chestnut density and frequency in mixed stands, as well as the effect of biotic interactions between ACGW, its parasitoids and the chestnut blight disease (caused by Cryphonectria parasitica). ACGW infestation rates were significantly lower in chestnut-oak and chestnut-ash mixtures than in pure chestnut stands and chestnut-pine mixtures. Infestation rate decreased with decreasing chestnut relative proportion. The composition of native parasitoid communities emerged from galls significantly differed between pure and mixed chestnut stands, but not the species richness or abundance of parasitoids. The abundance of the introduced parasitoid Torymus sinensis was not correlated with ACGW infestation rates and was independent of stand composition. Blight symptoms modified ACGW infestation rates with taller trees being preferred when they were asymptomatic but avoided when they presented blight disease damage. Our results suggest that conservation biological control based on tree species mixtures could contribute to reducing the damage of invasive forest pests.Excepting for the first and last authors, the order of authors is alphabetical.

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Section: Parasitoid Collectionmentioning

confidence: 99%

Plant neighbour identity and invasive pathogen infection affect associational resistance to an invasive gall wasp

et al. 2017

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“…Based on available literature, O. diffinis plays the role of parasitoid for other species of Ormyrus sp. [74][75][76][77]. This species is also reared from the galls of Neaylax alvia and N. nemorosae (Hymenoptera Cynipidae) on different species of sage and from those of Rhodus cyprius (Hymenoptera Cynipidae) on Salvia triloba (Lamiaceae) [74].…”

Section: Discussionmentioning

confidence: 99%

Threats Posed to the Rediscovered and Rare Salvia ceratophylloides Ard. (Lamiaceae) by Borer and Seed Feeder Insect Species

et al. 2021

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The effects of herbivorous insects on a plant population are not always well tolerated. This is especially true if the herbivorous actions are directed toward rare plant species. Salvia ceratophylloides Ard. is a rare endemism of southern Italy. Observations of the plants in situ revealed that many of them were under severe stress and did not produce seeds. Therefore, to find out which factors affect the reproductive activity as a whole, an observational study was carried out. We found bottom-up and top-down effects on plant health and reproduction associated with herbivorous action. Squamapion elongatum (Coleoptera, Curculionoidea, Apionidae), in all monitored sites, infested plants non-uniformly but was able to threaten the health condition, flowering, and seed production of sage by digging tunnels into the sage branches (bottom-up action), and then secondarily by seed feeder Systole salvia Zerova (Hymenoptera, Eurytomidae) predating sage seeds (top-down action). Mainly, chalcid parasitoid wasps such as Trichomalus spp. (Hymenoptera, Pteromalidae), as well as Eupelmus vesicularis and E. muellneri (Hymenoptera, Eupelmidae), limited the herbivorous S. elongatum population and the seed herbivore S. salviae emerged with its parasitoid Ormyrus diffinis (Hymenoptera, Ormyridae). Overall, this study showed how ecological interactions among herbivores, their host, and their natural enemies act on this sage species in all sites investigated. Among the herbivores, mainly S. elongatum affected this rare sage species, which should be taken into consideration, especially in the formulation of biological control solutions and for improving operating practice aimed at reproducing the species. This study provides the molecular characterization of the herbivorous species involved, in order to support future projects to evaluate the intra- and interspecific genetic variability of insects, their evolutionary relationships, and phylogeny studies.

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“…Parasitoids were identified to species using available morphological taxonomic keys (Nieves-Aldrey, 1983, 1984 a , 1984 b , unpublished) and unpublished keys from Askew and Thúroczy for an update in some parasitoid families. Some of the reared parasitoid species, such as Eupelmus urozonus Dalman, 1820, Ormyrus pomaceus (Geoffroy, 1785), and Bootanomyia dorsalis (Fabricius, 1798), include complex cryptic lineages that are difficult to distinguish morphologically, as has been revealed in studies with molecular markers and other tools (Al-Khatib et al ., 2014; Nicholls et al ., 2010; Goméz et al ., 2017). A conservative approach to the identification of species belonging to these cryptic species aggregates was chosen, and they were assigned to the binominal combination used for the aggregate or complex (table 2).…”

Section: Methodsmentioning

confidence: 99%

Differences in native and introduced chalcid parasitoid communities recruited by the invasive chestnut pest Dryocosmus kuriphilus in two Iberian territories

Gil‐Tapetado

Gómez

Askew

et al. 2020

Bull. Entomol. Res.

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Dryocosmus kuriphilus (Hymenoptera: Cynipidae) is a global invasive gall wasp and a pest of chestnuts (Castanea spp.). A study of the Chalcidoidea parasitoid community of D. kuriphilus was undertaken over two years, from March 2017 to March 2019, at 15 sites in south and northwest Spain (Málaga and Galicia regions). More than 18,000 galls were collected, and 1153 parasitoids belonging to 22 species of seven chalcidoid families, plus two individuals of an inquiline Cynipidae, Synergus facialis, emerged. Richness was higher in the Málaga region, with 20 species, while 17 parasitoids and one inquiline were identified in Galicia. The parasitism rate of native chalcid parasitoid species in both regions was low. Eupelmus urozonus and Mesopolobus lichtensteini were the most abundant native species. Mesopolobus tibialis was a dominant species in south Spain, while Ormyrus pomaceus was a dominant species in northwest Spain. Our results revealed the existence of a sub-community of univoltine, probably host specialized, parasitoids in south Spain, which overwinter in galls, exhibiting a similar life cycle to Torymus sinensis. These species were Torymus notatus, Aulogymnus bicolor, Aulogymnus obscuripes and Aulogymnus balani. Data on the recovery of T. sinensis after release in the south Spain region show it to be well established, but its numbers are still low in northwest Spain.

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Terminal-instar larval systematics and biology of west European species of Ormyridae associated with insect galls (Hymenoptera, Chalcidoidea)

Cited by 14 publications

References 34 publications

Plant neighbour identity and invasive pathogen infection affect associational resistance to an invasive gall wasp

Plant neighbour identity and invasive pathogen infection affect associational resistance to an invasive gall wasp

Threats Posed to the Rediscovered and Rare Salvia ceratophylloides Ard. (Lamiaceae) by Borer and Seed Feeder Insect Species

Differences in native and introduced chalcid parasitoid communities recruited by the invasive chestnut pest Dryocosmus kuriphilus in two Iberian territories

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