Rearing, release and settlement prospect in Italy of Torymus sinensis, the biological control agent of the chestnut gall wasp Dryocosmus kuriphilus

BioControl ◽  
2007 ◽  
Vol 53 (6) ◽  
pp. 829-839 ◽  
Author(s):  
Ambra Quacchia ◽  
Seiichi Moriya ◽  
Giovanni Bosio ◽  
Ivano Scapin ◽  
Alberto Alma
Keyword(s):  
Biological Control ◽  
Biological Control Agent ◽  
Control Agent ◽  
Gall Wasp ◽  
Dryocosmus Kuriphilus ◽  
Torymus Sinensis

Post-release evaluation of non-target effects of Torymus sinensis, the biological control agent of Dryocosmus kuriphilus in Italy

BioControl ◽  
2017 ◽  
Vol 62 (4) ◽  
pp. 445-456 ◽  
Author(s):  
Chiara Ferracini ◽  
Ester Ferrari ◽  
Marianna Pontini ◽  
Lindsay Karen Hernández Nova ◽  
Matteo A. Saladini ◽  
...  
Keyword(s):  
Biological Control ◽  
Biological Control Agent ◽  
Control Agent ◽  
Dryocosmus Kuriphilus ◽  
Torymus Sinensis ◽  
Target Effects

Recruitment of native parasitoids by an introduced gall wasp Dryocosmus kuriphilus Yasumatsu, 1951 (Hymenoptera: Cynipidae) in Britain and France

2020 ◽  
Vol 156 (2) ◽  
pp. 111-116
Author(s):  
M.T. Jennings ◽  
R.R. Askew
Keyword(s):  
Native Species ◽  
Biological Control Agent ◽  
Control Agent ◽  
Pest Species ◽  
Gall Wasp ◽  
Dryocosmus Kuriphilus ◽  
Native Parasitoids ◽  
Torymus Sinensis ◽  
Gall Wasps ◽  
Major Pest

The invasive chestnut gall wasp Dryocosmus kuriphilus Yasumatsu (Hymenoptera: Cynipidae) is a major pest species of Castanea spp. worldwide. It only arrived in Britain in 2015 and the parasitoid community associated with it was studied in 2019. Eight native species of chalcidoid, previously known to be associated with oak gall wasps, were identified. These results are compared to a similar study (2016–2019) in France where four parasitoids were reared. However, this community included the deliberately introduced Torymus sinensis Kamijo, a specific biological control agent of D. kuriphilus. The presence of T. sinensis and the differences between the two communities is discussed.

scholarly journals The Asian Chestnut Gall Wasp in Italy: Surveys on its Native and Exotic Parasitoids as Well as on Chestnut Cultivar Susceptibility

2019 ◽  
pp. 1-8
Author(s):  
M. Bracalini ◽  
F. Croci ◽  
A. Turchi ◽  
E. Giordani ◽  
R. Tiberi ◽  
...  
Keyword(s):  
Biological Control ◽  
Native Species ◽  
Biological Control Agent ◽  
Control Agent ◽  
The Other ◽  
Parasitoid Species ◽  
Gall Wasp ◽  
Native Parasitoids ◽  
Torymus Sinensis ◽  
Cultivar Susceptibility

In the context of biological control against the Asian chestnut gall wasp Dryocosmus kuriphilus Yasumatsu (Hymenoptera: Cynipidae) in Italy, the aim of this study was to survey its native parasitoids as well as the exotic Torymus sinensis Kamijo which had been introduced and released as a biological control agent. Furthermore, both parasitism and pest susceptibility of local chestnut trees were investigated. Surveys were carried out in 2014 in the Municipality of Sambuca Pistoiese (Pistoia), in a chestnut forest which included three cultivars: Nerattino, Carpinese, and Pastinese. On a total of 35 trees, selected among the three cultivars, 24 current-year shoots were randomly collected and examined in the laboratory. After the damage by the cynipid had been assessed, leaf samples were used for molecular analyses. Galls were also collected on the 35 selected trees both for dissection and to rear parasitoid specimens in the laboratory. The three cultivars were confirmed by genetic tests. The Carpinese cultivar resulted to be the most damaged, with highest percentage of attacked shoots (84.38%). Moreover it was also the cultivar with the lower parasitism rate (about 16%). From reared galls seven parasitoid species emerged, all belonging to the superfamily of Chalcidoidea. Exception made for the non-native T. sinensis, the other six were native species associated to oak gall wasps.  Native parasitoids were more scarcely present, while the exotic T. sinensis amounted for the 84.27% of all emerged parasitoids. Our results confirm how chestnut susceptibility to D. kuriphilus varies depending on the cultivar. Overall, the Nerattino cultivar resulted as the best among the three examined: it was subject to a less intense attack than the other cultivars, and the resulting smaller galls were more effectively exploited by parasitoids.

scholarly journals Genotypic Characterization of Torymus sinensis (Hymenoptera: Torymidae) After Its Introduction in Tuscany (Italy) for the Biological Control of Dryocosmus kuriphilus (Hymenoptera: Cynipidae)

2019 ◽  
Vol 19 (4) ◽  
Author(s):  
Ambra Viviani ◽  
Rodolfo Bernardi ◽  
Andrea Cavallini ◽  
Elisabetta Rossi
Keyword(s):  
Biological Control ◽  
18S Rrna ◽  
18S Rrna Gene ◽  
Its2 Region ◽  
Rrna Gene ◽  
Gall Wasp ◽  
Dryocosmus Kuriphilus ◽  
Torymus Sinensis ◽  
The World

Abstract Torymus sinensis Kamijo (Hymenoptera: Torymidae) is an alien parasitoid that is used in many areas of the world for biological control the Asian chestnut gall wasp, Dryocosmus kuriphilus Yasumatsu (Hymenoptera: Cynipidae). In Italy, this parasitoid was imported from Japan in 2003 and subsequently multiplied and released throughout the country. In this study, a phylogenetic investigation was carried out on insects from three different sites in northern Tuscany (Italy). Moreover, the possible hybridization between T. sinensis and some native Torymus species was evaluated. The conserved region 18S rRNA gene and the hypervariable ITS2 (Internal Transcribed Spacer 2) region of the ribosomal cistrone were selected as molecular markers. Sequencing the amplified products, after cloning, ruled out any hybridization between T. sinensis and the native Torymus species, and also confirmed the presence of two haplotypes for the Tuscan population of T. sinensis both for the region of the 18S rRNA gene as well as for the ITS2 region. These results confirm that the environmental impact of the alien parasitoid T. sinensis in the study site is acceptable, although an extensive and repeated monitoring would be desirable.

scholarly journals A new parasitoid of the Erythrina Gall Wasp, Quadrastichus erythrinae Kim (Hymenoptera: Eulophidae)

Zootaxa ◽  
2009 ◽  
Vol 2083 (1) ◽  
pp. 19-26 ◽  
Author(s):  
JOHN LA SALLE ◽  
Mohsen Ramadan ◽  
BERNARR R. KUMASHIRO
Keyword(s):  
South Africa ◽  
Biological Control ◽  
Biological Control Agent ◽  
Control Agent ◽  
Gall Wasp

Aprostocetus exertus La Salle (Hymenoptera: Eulophidae: Tetrastichinae) is described as a parasitoid of the invasive Erythrina Gall Wasp, Quadrastichus erythrinae Kim (Hymenoptera: Eulophidae: Tetrastichinae). The description is based on material originally collected in Tanzania and South Africa. This species is described because of its potential as a biological control agent against the Erythrina Gall Wasp.

Biology and host preference of Selitrichodes neseri: A potential biological control agent of the Eucalyptus gall wasp, Leptocybe invasa

2014 ◽  
Vol 78 ◽  
pp. 33-41 ◽  
Author(s):  
Gudrun Dittrich-Schröder ◽  
Marlene Harney ◽  
Stefan Neser ◽  
Tanya Joffe ◽  
Samantha Bush ◽  
...  
Keyword(s):  
Biological Control ◽  
Host Preference ◽  
Biological Control Agent ◽  
Control Agent ◽  
Gall Wasp ◽  
Leptocybe Invasa ◽  
Eucalyptus Gall Wasp

scholarly journals The open bar is closed: restructuration of a native parasitoid community following successful control of an invasive pest

2019 ◽  
Author(s):  
David Muru ◽  
Nicolas Borowiec ◽  
Marcel Thaon ◽  
Nicolas Ris ◽  
Madalina I. Viciriuc ◽  
...  
Keyword(s):  
Biological Control ◽  
Habitat Type ◽  
Invasive Pest ◽  
Parasitoid Species ◽  
Native Community ◽  
Natural Habitats ◽  
Gall Wasp ◽  
Dryocosmus Kuriphilus ◽  
Native Parasitoids ◽  
Torymus Sinensis

AbstractThe rise of the Asian chestnut gall wasp Dryocosmus kuriphilus in France has benefited the native community of parasitoids originally associated with oak gall wasps by becoming an additional trophic subsidy and therefore perturbing population dynamics of local parasitoids. However, the successful biological control of this pest has then led to significant decreases in its population densities. Here we investigate how the invasion of the Asian chestnut gall wasp Dryocosmus kuriphilus in France and its subsequent control by the exotic parasitoid Torymus sinensis has impacted the local community of native parasitoids.We explored 5 years of native community dynamics within 26 locations during the rise and fall of the invasive pest. In an attempt to understand how mechanisms such as local extinction or competition come into play, we analyzed how the patterns of co-occurrence between the different native parasitoid species changed through time.Our results demonstrate that native parasitoid communities experienced increased competition as the D. kuriphilus levels of infestation decreased. During the last year of the survey, two alternative patterns were observed depending on the sampled location: either native parasitoid communities were represented by an extremely limited number of species occurring at low densities, in some cases no native parasitoid species at all, or they were dominated by one main parasitoid: Mesopolobus sericeus. These two patterns seemed to correlate with the habitat type, M. sericeus being more abundant in semi-natural habitats compared to agricultural lands, the former known to be natural reservoirs for native parasitoids. These results highlight how the “boom-and-bust” dynamics of an invasive pest followed by successful biological control can deeply alter the structure of native communities of natural enemies.This article has been peer-reviewed and recommended by Peer Community in Zoologyhttps://doi.org/10.24072/pci.zool.100004

Selitrichodes neseri n. sp., a new parasitoid of the eucalyptus gall wasp Leptocybe invasa Fisher & La Salle (Hymenoptera: Eulophidae: Tetrastichinae)

Zootaxa ◽  
2012 ◽  
Vol 3333 (1) ◽  
pp. 50 ◽  
Author(s):  
JANINE KELLY ◽  
JOHN LA SALLE ◽  
MARLENE HARNEY ◽  
GUDRUN DITTRICH-SCHRÖDER ◽  
BRETT HURLEY
Keyword(s):  
South Africa ◽  
Biological Control ◽  
Biological Control Agent ◽  
Control Agent ◽  
Biological Control Agents ◽  
Gall Wasp ◽  
Eucalyptus Plantations ◽  
Leptocybe Invasa ◽  
Eucalyptus Gall Wasp

Selitrichodes neseri Kelly & La Salle n. sp. (Hymenoptera: Eulophidae: Tetrastichinae), is described as a parasitoid of the inva-sive eucalyptus gall wasp Leptocybe invasa Fisher & La Salle (Hymenoptera: Eulophidae: Tetrastichinae), which is causingsubstantial damage particularly in commercial Eucalyptus plantations. Selitrichodes neseri was originally collected in Australiain 2010 when searching for biological control agents of L. invasa. It has since been reared in quarantine in South Africa where it is being evaluated for release as a biological control agent of L. invasa.

Contribution of integrative taxonomy to tracking interspecific hybridizations between the biological control agent Torymus sinensis and its related taxa

2021 ◽  
Author(s):  
Ionela‐Mădălina Viciriuc ◽  
Marcel Thaon ◽  
Seiichi Moriya ◽  
Sylvie Warot ◽  
Jinping Zhang ◽  
...  
Keyword(s):  
Biological Control ◽  
Biological Control Agent ◽  
Integrative Taxonomy ◽  
Control Agent ◽  
Torymus Sinensis
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