Defense strategies used by two sympatric vineyard moth pests

Vogelweith, Fanny; Thiéry, Denis; Moret, Yannick; Colin, Eloïse; Motreuil, Sébastien; Moreau, Jérôme

doi:10.1016/j.jinsphys.2014.03.009

Cited by 26 publications

(23 citation statements)

References 41 publications

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“…Hence, we preferred the application of geometric morphometric methods instead of molecular analyses, because our goal was to analyse the association between environmental factors and morphological structure, rather than determining the genetic response to different climatic conditions. Previous studies have analyzed the effect of different ecological factors on insect morphology from diverse perspectives, for instance anti-predator defences [50]–[52], behaviour and sexual dimorphism [53]–[57], physiology [58]–[60] and environmental adaptations [61]–[64]. However our approach is innovative, because it is a novel attempt to characterize the relationship between a larval morphology with closely related environmental conditions.…”

Section: Introductionmentioning

confidence: 99%

Ecomorphological Variation of the Wireworm Cephalic Capsule: Studying the Interaction of Environment and Geometric Shape

et al. 2014

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Studying the association between organismal morphology and environmental conditions has been very useful to test hypothesis regarding the influence of climate on shape. It has been long recognized that different environments produce dissimilar stress levels in insects, which can be reflected on the ability of an individual to overcome these pressures and spread further. Agriotes (Coleoptera: Elateridae) species infest agricultural fields in different parts of Croatia, inhabiting different climatic conditions. Previous biological studies have indicated that there is a relationship between some Agriotes biological parameters such as density and climatic conditions such as soil moisture and temperature. However, it is still unknown how these environmental properties influence the wireworm morphological structure. This is highly relevant because the head of this species is directly involved in the mobility in the soil, thus affecting the invasive capacity of this insect. Therefore the aim of this study was to assess the association between different climatic conditions and the morphological variation of Agriotes cephalic capsule. Advanced multivariate analysis and geometric morphometric tool were applied to study the covariation between shape and environmental variables. Partial Least Squares methods were used in order to analyse the association between the wireworm head shape and three different climatic conditions: soil type, temperature and rainfall. Our results showed that there is a high covariation between the wireworm head shape and the climatic conditions. It was suggested that the observed shape–environment association could be result of the high plasticity of this species in relation to its invasive capacity.

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Section: Introductionmentioning

confidence: 99%

Ecomorphological Variation of the Wireworm Cephalic Capsule: Studying the Interaction of Environment and Geometric Shape

et al. 2014

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“…The efficiency of the natural enemies depends on their ability to bypass the sophisticated defenses used by grapevine moths (Greeney et al 2012). The first line of defense that is particularly efficient against larval parasitoids involves escaping, twisting, and dropping (Greeney et al 2012;Vogelweith et al 2014). Once this barrier is passed by the natural enemies, the cuticles represent a very efficient way to fight against these natural enemies.…”

Section: Effect Of the Host Plant (Including Grape Cultivar)mentioning

confidence: 99%

“…Once this barrier is passed by the natural enemies, the cuticles represent a very efficient way to fight against these natural enemies. Indeed, an individual with a thick and resistance cuticle will be less likely to be parasitize by a parasitoid (Vogelweith et al 2014). Once morphological and behavioral defenses are bypassed, the last and most efficient defense against natural enemies, such as parasitoids, is the immune system (Greeney et al 2012) (Fig.…”

Section: Effect Of the Host Plant (Including Grape Cultivar)mentioning

confidence: 99%

Biological protection against grape berry moths. A review

Thiéry

Louâpre

Muneret

et al. 2018

Agron. Sustain. Dev.

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Grape is a major crop, covering 7.5 M ha worldwide, that is currently being confronted with three main challenges: intensive pesticide use that must be reduced, invasion by new pests/diseases, and climate change. The biological control of pests and vectors would help address these challenges. Here, we review the scientific literature on the biological control of grape moths by macroorganisms (excluding nematodes). Two components, biological control with an active human role, mainly using biocontrol agents through inundation or inoculation, and conservation biological control, are considered. The major points are the following. (1) Tortricid grape moths seriously damage grapes worldwide, causing yield losses and quality reduction. The more geographically widespread species, Lobesia botrana, continues to extend its range, invading South American and, more recently, North American vineyards. (2) Parasitoids and predators (including arthropods, birds, and bats) that can control grape pests are very diverse. (3) Different methods exist to assess pest control efficiency in the field but some of them remain to be developed. (4) Environmental factors, including host plants, landscape, grass or floral covers, and organic practices, affect the natural control of grape moths. (5) Pest resistance to parasitoids strongly depends on their immune system, which is controlled by the host plant. Future climate changes may modify this tritrophic interaction and thus affect biological control strategies. We conclude that biological control has a great deal of potential in viticulture and that addressing these key factors would improve the efficiency levels of biological control strategies. This would help growers and stakeholders to significantly reduce insecticide use in vineyards.

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“…A final mortality was recorded after 24 hours. All tests were undertaken at 25 ± 2 ºC and 55-78% relative humidity, and a natural photoperiod was maintained (WHO, 2013d;Vogelweith et al, 2014). Cotton pads soaked in 10% sugar solution were provided during the 24 hours holding period.…”

Section: Who Adult Bioassaymentioning

confidence: 99%

Regulatory mechanisms involved in the control of CYP6M2 gene in insecticide resistant in Anopheles gambiae (Diptera: Culicidae)

Mohammed

2014

Journal of Biotechnology

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Cytochrome P450s, including CYP6M2 gene, are involved in the detoxification of permethrin. Some of these genes are regulated by CnCC / dKeap 1 and Spineless / Tango in Drosophila melanogaster. This mechanism is yet to be identified in Anopheles gambiae. Thus, we examine whether there is differential regulation of CYP6M2 gene between permethrin resistant Tiassalé and susceptible Kisumu strains of An. gambiae. Bioinformatics analysis was used to search for cis-acting elements within CYP6M2 (896 bp) region hypothesised to contain the promoter. Isolated and cloned CYP6M2 promoter reporter constructs were transfected into Anopheles gambiae Sua 5.1* cells to measure luciferase activity as a surrogate promoter activity. The WHO adult bioassay was used to expose adult females of the permethrin resistant Tiassalé and susceptible Kisumu strains of An. gambiae to discriminating doses of 0.75% permethrin. Uncharacterised strains from Auyo (Auyo-Nigeria) selected to 4% DDT and 0.1% Regulatory Mechanisms Involved in the Control of CYP6M2

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Defense strategies used by two sympatric vineyard moth pests

Cited by 26 publications

References 41 publications

Ecomorphological Variation of the Wireworm Cephalic Capsule: Studying the Interaction of Environment and Geometric Shape

Ecomorphological Variation of the Wireworm Cephalic Capsule: Studying the Interaction of Environment and Geometric Shape

Biological protection against grape berry moths. A review

Regulatory mechanisms involved in the control of CYP6M2 gene in insecticide resistant in Anopheles gambiae (Diptera: Culicidae)

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