Genetic diversity of melon aphids <i>Aphis gossypii</i> associated with landscape features

Dong, Zhaoke; Li, Yifan; Zhang, Zhiyong

doi:10.1002/ece3.4181

Cited by 8 publications

(7 citation statements)

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“…Indeed, impacts of landscape complexity on the natural enemies of crop pests have been widely studied (Chaplin‐Kramer et al 2011), especially for parasitoid communities (Kruess 2003, Thies et al 2003, Rand et al 2012). However, few studies have been done on the role of landscape composition in conservation biological control in greenhouses (but see Dong et al 2018).…”

Section: Discussionmentioning

confidence: 99%

“…Interestingly, our results showed that there were higher hyperparasitism rates in open greenhouses than in closed ones, indicating that biological control with parasitoids is more likely to be disrupted in open greenhouses by hyperparasitoids coming into the crop from the surrounding environment. This raises the issue of the importance of the surrounding landscape to biological control, as highlighted by Dong et al (2018). Because hyperparasitism may lead to the local collapse of primary parasitoid populations and increases in pest populations (Sullivan and Völkl 1999), one should consider these organisms when planning or applying any biological control program with parasitoids.…”

Section: Discussionmentioning

confidence: 99%

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Variations in community assemblages and trophic networks of aphids and parasitoids in protected crops

et al. 2020

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Citation: Postic, E., A. Le Ralec, C. Buchard, C. Granado, and Y. Outreman. 2020. Variations in community assemblages and trophic networks of aphids and parasitoids in protected crops. Ecosphere 11(5):Abstract. Greenhouse crops are thought to be simplified ecosystems because they often consist of monocultures that are relatively isolated from their environment. However, insect pests are still able to colonize these protected crops, which threaten their yields. Similarly, natural enemies of pests may be able to colonize greenhouses, providing a form of natural biological pest control. Protected strawberry crops are grown in several types of greenhouses that vary in their degree of openness. Crops often suffer from aphid outbreaks, which can be partly controlled by insect parasitoids immigrating from the surrounding environment. We investigated variations over space and time in both the aphid and parasitoid community diversity and species assemblages associated with protected strawberry crops. We sampled aphids and parasitoids in five regions of France in the spring and summer of two successive years. Despite the relative isolation of these protected crops, we identified a high aphid species richness in them, even at the greenhouse scale. Aphid community composition varied with spatial and temporal factors, but the species assemblages present were mostly determined by local factors. Parasitoid communities were mostly similar among the studied regions, but varied between seasons, with this temporal variation being related to changes in aphid species composition. The study of trophic interactions occurring between aphids and parasitoids allowed the most prevalent and efficient parasitoid species to be identified. The structures of food webs strongly varied in time and space, compromising any prediction of "natural" biological control. We also highlighted ecological factors that can disrupt aphid biological control, such as the occurrence of hyperparasitism or the possibility of apparent mutualism between aphid species. Finally, we showed that the degree of openness of greenhouses influenced both the aphid communities and the hyperparasitism rates in them. These results provide valuable information to improve aphid biological control in protected crops.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Variations in community assemblages and trophic networks of aphids and parasitoids in protected crops

et al. 2020

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“…46 how likely is that insecticide resistance will evolve; Hawkins, Bass, Dixon, & Neve, 2019), and virus 47 transmission dynamics as different genotypes differ in their vector competence (Jacobson & 48 Kennedy, 2013). Evolutionary and ecological factors such as gene flow and distribution of hosts affect 49 genetic variation in populations, which influences the adaptive responses to environmental change 50 and selective pressures (Caprio & Tabashnik, 1992; Davis & Shaw, 2001;Dong, Li, & Zhang, 2018). 51…”

Section: Introduction 41mentioning

confidence: 99%

Genetic structure at national and regional scale in a long-distance dispersing pest organism, the bird cherry–oat aphidRhopalosiphum padi

Morales‐Hojas

Gonzalez-Uriarte²,

Alvira-Iraizoz

et al. 2019

Preprint

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17Genetic diversity is determinant for pest species' success and vector competence. Understanding the 18 ecological and evolutionary processes that determine the genetic diversity is fundamental to help 19 identify the spatial scale at which pest populations are best managed. In the present study, we 20 present the first comprehensive analysis of the genetic diversity and evolution of Rhopalosiphum 21 padi, a major pest of cereals and a main vector of the barley yellow dwarf virus (BYDV), in Great 22Britain. We have used a genotype by sequencing approach to study whether i) there is any 23 underlying population genetic structure in this long distant disperser pest at a national and regional 24 scale; ii) the populations evolve as a response to environmental change and selective pressures, and; 25 iii) the populations comprise anholocyclic lineages. Individual R. padi were collected using the 26Rothamsted Insect Survey's suction-trap network at several sites across England between 2004 and 27 2016 as part of the RIS long-term nationwide surveillance. Results identified two genetic clusters in 28Great Britain that mostly paralleled a North -South division, although gene flow is ongoing between 29 the two subpopulations. These different groups do not correspond to sexual and asexual types, 30 sexual reproduction being predominant in Great Britain, and could correspond to ecotypes. Results 31 also show that there is migration with gene flow across Great Britain, although there is a reduction 32 between the northern and southern sites with the Southwestern population being the most 33 genetically differentiated. There is no evidence for isolation-by-distance and other factors like 34 primary host distribution could influence the migration patterns. Finally, results also show no 35 evidence for the evolution of the R. padi population, and it is demographically stable despite the 36 ongoing environmental change. These results are discussed in view of their relevance to pest 37 management and the transmission of BYDV. 38

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“…Codling moth ( C. pomonella ) populations in Chile showed a significant but weak genetic differentiation between adults collected in managed and unmanaged orchards, indicating active adult movement between both habitat types 35 . For melon aphids ( Aphis gossypii Glover) it has been shown that genetic diversity of aphid populations on watermelons cultivated in greenhouses was significantly associated with certain landscape elements in two counties in China 36 . In contrast, a limited gene flow between grain aphid ( Sitobion avenae Fabricius) populations colonizing cereal crops as well as uncultivated hosts growing in field margins was detected in an area in Western France 37 .…”

Section: Discussionmentioning

confidence: 99%

Insights in genetic diversity of German and Italian grape berry moth (Eupoecilia ambiguella) populations using novel microsatellite markers

Reineke

Pozzebon

Herczynski

et al. 2021

Sci Rep

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The grape berry moth Eupoecilia ambiguella (Lepidoptera: Tortricidae) is causing significant damage to grape berries, however, little is known on population genetics of this lepidopteran pest insect, hindered so far by the lack of suitable molecular markers. Here we report on the development of ten microsatellite markers of which six were used to characterise 21 E. ambiguella populations obtained from two viticultural regions in Germany and Italy. Moths were sampled during two subsequent generations (flights) in the same vineyard as well as in vineyards surrounded by different landscape types. German and Italian populations were genetically differentiated and a significant isolation by distance was evident. No significant divergence was observed among the populations from first or second flight moths, however, inbreeding was higher in first than in second flight populations. Moreover, inbreeding was influenced by habitat composition and complexity of landscape around vineyards, being positively associated with the percentage of area covered by grapevine. Population genetics of E. ambiguella could thus be affected by the presence of alternative host plants in viticultural landscapes, which is important in the light of both insecticide resistance management and sustainable pest management.

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Genetic diversity of melon aphids Aphis gossypii associated with landscape features

Cited by 8 publications

References 42 publications

Variations in community assemblages and trophic networks of aphids and parasitoids in protected crops

Variations in community assemblages and trophic networks of aphids and parasitoids in protected crops

Genetic structure at national and regional scale in a long-distance dispersing pest organism, the bird cherry–oat aphidRhopalosiphum padi

Insights in genetic diversity of German and Italian grape berry moth (Eupoecilia ambiguella) populations using novel microsatellite markers

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