Co-haplotyping symbiont and host to unravel invasion pathways of the exotic pest Halyomorpha halys in Italy

Martinez‐Sañudo, Isabel; Perotti, M. Alejandra; Scaccini, Davide; Pozzebon, Alberto; Marri, Laura; Mazzon, Luca

doi:10.1038/s41598-020-75519-2

Cited by 6 publications

(2 citation statements)

References 57 publications

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“…At the same time, we focused our attention to describe this new damage and differentiate it from other biotic and abiotic factors that are well documented within the literature [29]. In addition, 35 specimens collected within and around the strawberry fields were genetically identified at the Department of Agronomy, Food, Natural resources, Animals, and Environment (DAFNAE) of the University of Padua using the barcoding region (mtCOI) following the methodology described by Martinez-Sañudo et al [30].…”

Section: Assignment Of the New Damage On Fruit To Sbw And Its Descriptionmentioning

confidence: 99%

Anthonomus rubi on Strawberry Fruit: Its Biology, Ecology, Damage, and Control from an IPM Perspective

Tonina¹,

Zanettin²,

Miorelli

et al. 2021

Insects

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The strawberry blossom weevil (SBW), Anthonomus rubi, is a well-documented pest of strawberry. Recently, in strawberry fields of Trento Province (north-east Italy), new noteworthy damage on fruit linked to SBW adults was observed, combined with a prolonged adult activity until the autumn. In this new scenario, we re-investigated SBW biology, ecology, monitoring tools, and potential control methods to develop Integrated Pest Management (IPM) strategies. Several trials were conducted on strawberry in the laboratory, field and semi-natural habitats. The feeding activity of adult SBW results in small deep holes on berries at different stages, causing yield losses of up to 60%. We observed a prolonged survival of newly emerged adults (>240 days) along with their ability to sever flower buds without laying eggs inside them in the same year (one generation per year). SBW adults were present in the strawberry field year-round, with movement between crop and no crop habitats, underlying a potential role of other host/feeding plants to support its populations. Yellow sticky traps combined with synthetic attractants proved promising for both adult monitoring and mass trapping. Regarding control, adhesive tapes and mass trapping using green bucket pheromone traps gave unsatisfactory results, while the high temperatures provided by the black fabric, the periodic removal of severed buds or adults and Chlorpyrifos-methyl application constrained population build-up. The findings are important for the development of an IPM strategy.

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Section: Assignment Of the New Damage On Fruit To Sbw And Its Descriptionmentioning

confidence: 99%

Anthonomus rubi on Strawberry Fruit: Its Biology, Ecology, Damage, and Control from an IPM Perspective

Tonina¹,

Zanettin²,

Miorelli

et al. 2021

Insects

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“…The separation between populations were observed in the network and confirmed by population differentiation test, indicating the limitation in gene flow between populations. The main drivers of genetic structure in phytophagous insects are geographical or reproductive barriers, dispersal capacity, host plant fidelity, and habitat fragmentation (Barrett & Kohn 1991;Bertheau et al 2013;Lesieur et al 2016;Martinez-Sañudo et al 2020). The low dispersal ability of this flightless females could have favoured the lack of gene flow among its distribution ranges (Cavaletto et al 2019).…”

Section: Discussionmentioning

confidence: 99%

Phylogeographic investigation of the bladder grasshopperBullacris unicolor(Orthoptera Pneumoroidea) in South Africa

Sathyan

Engelbrecht

Couldridge

2023

Ethology Ecology & Evolution

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There are several factors, such as genetic drift, gene flow and migration that affect the population genetic structure and phylogeographic distribution of genetic lineages within single species. Previous studies of the bladder grasshoppers, Bullacris unicolor of South Africa, showed divergence in mitochondrial CO1 (cytochrome c oxidase subunit 1) haplotype diversity and significant genetic structure. In this study, we revisit these findings adding more samples from different locations and using mitochondrial CO1 and Internal transcribed spacer (ITS) gene sequences. We tested the hypothesis that the western, northern and eastern distribution ranges of B. unicolor show different population genetic patterns, corresponding with isolation-by-distance. Mitochondrial CO1 and ITS data were collected for 99 individuals from 12 localities across the Western, Northern and Eastern sides of South Africa. Overall, significant variation in genetic structure was found across the localities as indicated by F ST analyses. Haplotype and phylogeographical analyses suggested that restricted gene flow played a role in shaping current genetic patterns, although isolation-by-distance was not supported, as confirmed by Mantel tests. Phylogenetic trees of both genetic sequences revealed two major clades, with western and northern sides. Also, the major clades exhibit a few sub-clades within the localities, showing other factors shaping the genetic structure of B. unicolor include the geographical barriers, and most likely due to changes in habitat specificity and habitat fragmentation. Taken together, this study aims to contribute information on the population structure and genetic diversity of B. unicolor populations across South Africa.

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Application of sulfur‐based products reduces Halyomorpha halys infestation and damage in pome fruit orchards

Scaccini,

Fornasiero,

Lombardo

et al. 2024

Pest Management Science

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BACKGROUNDThe brown marmorated stink bug, Halyomorpha halys (Stål, 1855) (Hemiptera: Pentatomidae) is an invasive pest that causes economic damage on crops, decreasing fruit yield and quality. Conventional insecticides are frequently used to reduce infestations, but these are often with a limited residual effect, besides being costly and detrimental to nontarget organisms and the environment. In integrated pest management, novel strategies against H. halys are proposed, such as the use of alternative substances with an effect on insect behaviour and mobility. As one of the oldest multi‐site fungicides applied against fungal pathogens and as an insecticide and acaricide to control scales and mites, sulfur is proposed here to reduce H. halys infestation in fruit orchards.RESULTSField experiments were performed to evaluate the effect of repeated wettable sulfur applications on H. halys in apple and pear orchards. Sulfur‐induced plant phytotoxicity effects and quanti‐qualitative parameters on apple fruits were also recorded. Halyomorpha halys infestation was significantly reduced in sulfur‐treated compared to untreated pears and apples. Furthermore, sulfur sprays reduced fruit damage caused by H. halys. Besides, sulfur‐mediated phytotoxicity such as symptoms on leaves and fruit drop were not observed. Fruit quality was not influenced by sulfur treatments.CONCLUSIONSWettable sulfur seems to be a promising formulation given the low phytotoxicity, considering the technical aspects for an effective use of sulfur‐based products to counteract H. halys in pome fruit orchards. © 2024 The Author(s). Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

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Co-haplotyping symbiont and host to unravel invasion pathways of the exotic pest Halyomorpha halys in Italy

Cited by 6 publications

References 57 publications

Anthonomus rubi on Strawberry Fruit: Its Biology, Ecology, Damage, and Control from an IPM Perspective

Anthonomus rubi on Strawberry Fruit: Its Biology, Ecology, Damage, and Control from an IPM Perspective

Phylogeographic investigation of the bladder grasshopperBullacris unicolor(Orthoptera Pneumoroidea) in South Africa

Application of sulfur‐based products reduces Halyomorpha halys infestation and damage in pome fruit orchards

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