Naturalized <i>Dolichogenidea gelechiidivoris</i> complement the resident parasitoid complex of <i>Tuta absoluta</i> in North‐eastern Spain

Denis, Carmen; Riudavets, Jordi; Alomar, Òscar; Agustí, Núria; Gonzalez‐Valero, Helena; Cubí, Martina; Matas, Montserrat; Rodríguez, David; Achterberg, C. van; Arnó, Judit

doi:10.1111/jen.12994

Cited by 6 publications

(3 citation statements)

References 25 publications

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“…Besides N. tutae, other parasitoids are known to attack T. absoluta, including Dolichogenidae gelichiidivoris Marsh (Hymenoptera: Braconidae), which is newly present in the invaded areas and originates from the same area as T. absoluta (Denis et al, 2022;Krache et al, 2021;Salas Gervassio et al, 2019). Traditional approaches such as life table assessment remain fundamental for model developments.…”

Section: Extension Of the Model Framework To Other Pests And Biocontr...mentioning

confidence: 99%

Models for the Practitioner: Predicting Efficient Biocontrol of Tuta Absoluta Under Different Management Scenarios

Gonthier

Koller

Arnó³

et al. 2023

Preprint

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Section: Extension Of the Model Framework To Other Pests And Biocontr...mentioning

confidence: 99%

Models for the Practitioner: Predicting Efficient Biocontrol of Tuta Absoluta Under Different Management Scenarios

Gonthier

Koller

Arnó³

et al. 2023

Preprint

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“…While several companies have attempted to mass‐produce this species, the utilization of N. tutae is now restricted to conservation biological control due to an unfavorable cost–benefit balance 9 . More recently, Dolichogenidea gelechiidivoris (Marsh) (Hymenoptera: Braconidae), which originates from the Neotropics, has established in Spain and Algeria 30,31 . In South America, it is considered an essential agent against T. absoluta , 32 and in 2017 it was imported to Kenya from Peru to contribute to the control of T. absoluta in Africa 33 .…”

Section: Introductionmentioning

confidence: 99%

“…9 More recently, Dolichogenidea gelechiidivoris (Marsh) (Hymenoptera: Braconidae), which originates from the Neotropics, has established in Spain and Algeria. 30,31 In South America, it is considered an essential agent against T. absoluta, 32 and in 2017 it was imported to Kenya from Peru to contribute to the control of T. absoluta in Africa. 33 These parasitoid species have very distinct life history traits.…”

Section: Introductionmentioning

confidence: 99%

Few indirect effects of baculovirus on parasitoids demonstrate high compatibility of biocontrol methods against Tuta absoluta

Gonthier

Arnó

Romeis

et al. 2022

Pest Management Science

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BACKGROUND Combining different biocontrol agents, particularly micro‐ and macroorganisms, can contribute to new and sustainable pest control approaches. Tuta absoluta (Meyrick) (Lepidoptera: Gelechiidae) is one of the most destructive pests of solanaceous crops. An emerging management strategy consists of biological control using microbial insecticides such as baculoviruses, but with limited efficacy. Thanks to their high target specificity, baculoviruses can be used simultaneously with natural enemies such as parasitoids for improved control of T. absoluta. However, potential indirect nontarget effects of baculoviruses on parasitoids can result from overlapping resource requirements. We assessed whether ovipositing parasitoid females discriminated against virus‐treated hosts and examined the outcome of within‐host competition between the hymenopteran parasitoids Necremnus tutae (Reuter) (Eulophidae) and Dolichogenidea gelechiidivoris Marsch (Braconidae), and the Phthorimaea operculella granulovirus (PhopGV, Baculoviridae) that infects T. absoluta larvae. RESULTS Female D. gelechiidivoris discriminated against virus‐treated hosts, whereas N. tutae did not. We found few indirect virus‐related effects depending on the species, the sex, and the time of virus treatment. Effects were ambivalent for D. gelechiidivoris offspring and ranged from increased male longevity when infection occurred before parasitization to reduced emergence and male longevity when infection occurred after parasitization. N. tutae offspring showed a longer development time and shorter male longevity when they developed in virus‐treated hosts. CONCLUSION The virus had a low impact on parasitoid offspring. In rare cases, adverse effects were detected; however, the low magnitude of these effects is unlikely to reduce the fitness of parasitoid offspring, therefore both parasitoids seem compatible with the baculovirus for control of T. absoluta. © 2022 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

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Potential side effects of the interaction between Phthorimaea absoluta parasitoids: the exotic Dolichogenidea gelechiidivoris and the native Bracon nigricans

Mama Sambo,

Ndlela,

du Plessis

et al. 2023

Int J Trop Insect Sci

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The coexistence and efficiency in pest control of introduced and native parasitoids can be challenging. Continuous observations of the cohabitation of parasitoid species could confirm the persistence of the introduced parasitoid in the ecosystem under co-existence scenarios. This study provides an example of such a co-existence for biocontrol of the invasive pest, Phthorimaea absoluta (Meyrick) (Lepidoptera: Gelechiidae). Two parasitoids, the introduced endoparasitoid Dolichogenidea gelechiidivoris (Marsh) (Hymenoptera: Braconidae) and the native ectoparasitoid Bracon nigricans Szépligeti (Hymenoptera: Braconidae) were released in cages containing a tomato plant infested with P. absoluta. Parasitism and killing rate of P. absoluta by both parasitoid species, and the parasitoid and P. absoluta population were monitored weekly. The parasitoid species coexisted for seven weeks in the experimental units. Parasitism by D. gelechiidivoris was significantly affected by the presence of B. nigricans, with 73% and 22% parasitism in the absence and presence of B. nigricans, respectively. Parasitism by B. nigricans was not affected by its co-existence with D. gelechiidivoris. The number of D. gelechiidivoris adults increased eight-fold in five weeks in the absence of B. nigricans, while less than the initial number of adults were present in co-existence with B. nigricans. The P. absoluta infestation declined from the fifth week to 98% lesser than the control in all the treatments, either D. gelechiidivoris or B. nigricans as standalone treatments, as well as in combination. Since B. nigricans negatively affected D. gelechiidivoris population growth, releases of this introduced parasitoid should be considered with caution in areas where B. nigricans occurs.

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Naturalized Dolichogenidea gelechiidivoris complement the resident parasitoid complex of Tuta absoluta in North‐eastern Spain

Cited by 6 publications

References 25 publications

Models for the Practitioner: Predicting Efficient Biocontrol of Tuta Absoluta Under Different Management Scenarios

Models for the Practitioner: Predicting Efficient Biocontrol of Tuta Absoluta Under Different Management Scenarios

Few indirect effects of baculovirus on parasitoids demonstrate high compatibility of biocontrol methods against Tuta absoluta

Potential side effects of the interaction between Phthorimaea absoluta parasitoids: the exotic Dolichogenidea gelechiidivoris and the native Bracon nigricans

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