scholarly journals First detection of chromosomal inversions in a natural population of the invasive pest species Drosophila suzukii

2020 ◽  
Vol 99 (1) ◽  
Author(s):  
Carla Esteve ◽  
Clàudia Lagares ◽  
Francesc Mestres
Keyword(s):  
Natural Population ◽  
Invasive Pest ◽  
Pest Species ◽  
Drosophila Suzukii ◽  
Chromosomal Inversions ◽  
Invasive Pest Species

Nutritional developmental history and its consequences for reproductive success in Drosophila suzukii (Diptera: Drosophilidae)

2020 ◽  
Vol 152 (4) ◽  
pp. 490-515 ◽  
Author(s):  
Yvonne Young ◽  
Tristan A.F. Long
Keyword(s):  
Reproductive Success ◽  
Mate Choice ◽  
Egg Production ◽  
Invasive Pest ◽  
Spatial And Temporal Variation ◽  
Complex Nature ◽  
Pest Species ◽  
Drosophila Suzukii ◽  
Offspring Performance ◽  
Invasive Pest Species

AbstractThe characteristics of the juvenile developmental environment of an individual can have many important consequences for their adult reproductive success as it may shape the development and expression of phenotypes that are relevant to the later operation of sexual selection. Drosophila suzukii (Matsumura) (Diptera: Drosophilidae) is an economically important invasive pest species that lays its eggs in many types of soft fruits and potentially experiences large intrapopulation spatial and temporal variation in its nutritional developmental environments. Here, we examine whether the larval nutritional developmental environment influences D. suzukii mate choice, egg production, and offspring performance. Using D. suzukii raised on diets differing in their nutritional quality, we examined mating preferences, fecundity, and offspring survivorship in “no-choice,” “female choice,” and “male choice” reproductive contexts. We found evidence for both adaptive and nonadaptive mate choice behaviours associated with the phenotypes of D. suzukii that had developed in different nutritional environments. These results reveal the complex nature of the relationship between the developmental environment and individual reproductive success in D. suzukii, which has important potential implications for future management plans involving this species.

scholarly journals Spatial and temporal genetic variation of Drosophila suzukii in Germany

2021 ◽  
Author(s):  
Sarah Petermann ◽  
Sabine Otto ◽  
Gerrit Eichner ◽  
Marc F. Schetelig
Keyword(s):  
Invasive Pest ◽  
Economic Losses ◽  
Pest Species ◽  
Drosophila Suzukii ◽  
Genetic Changes ◽  
Wide Range ◽  
Invasive Pest Species ◽  
And Migration ◽  
Multiple Invasions ◽  
The Impact

AbstractNative to Southeast Asia, the spotted wing drosophila (SWD), Drosophila suzukii Matsumura, rapidly invaded America and Europe in the past 20 years. As a crop pest of soft-skinned fruits with a wide range of host plants, it threatens the fruit industry worldwide, causing enormous economic losses. To control this invasive pest species, an understanding of its population dynamics and structure is necessary. Here, we report the population genetics and development of SWD in Germany from 2017–19 using microsatellite markers over 11 different sample sites. It is the first study that examines SWD’s genetic changes over 3 years compared to multiple international SWD laboratory strains. Results show that SWD populations in Germany are highly homogenous without differences between populations or years, which indicates that populations are well adapted, migrate freely, and multiple invasions from outside Germany either did not take place or are negligible. Such high genetic variability and migration between populations could allow for a fast establishment of the pest species. This is especially problematic with regard to the ongoing spread of this invasive species and could bear a potential for developing pesticide resistance, which could increase the impact of the SWD further in the future.

Westward Palaearctic range expansion of Papilio demoleus Linnaeus, 1758 (Lepidoptera: Papilionidae) and its arrival at Mediterranean coastal regions of Turkey and Syria

2020 ◽  
Vol 71 (4) ◽  
pp. 257-272
Author(s):  
Onat Başbay ◽  
Mudar Salimeh ◽  
Eddie John
Keyword(s):  
Eastern Mediterranean ◽  
Economic Importance ◽  
Invasive Pest ◽  
Pest Species ◽  
Coastal Regions ◽  
The North ◽  
North Eastern ◽  
The World ◽  
Invasive Pest Species ◽  
Papilio Demoleus

We review the continuing and extensive spread of Papilio demoleus in south-eastern Turkey and in regions of Turkey and Syria adjacent to the north-eastern Mediterranean. Since the authors documented the arrival of this attractive but potentially destructive papilionid species at coastal areas of Syria in 2019, regular monitoring has confirmed successful overwintering there, as well as in Turkey. As previously indicated, P. demoleus is widely recognized as an invasive pest species in Citrus-growing areas of the world and hence its arrival is of potential economic importance to a region in which citrus is widely grown.

scholarly journals Highly variable COI haplotype diversity between three species of invasive pest fruit fly reflects remarkably incongruent demographic histories

2019 ◽  
Author(s):  
Camiel Doorenweerd ◽  
Michael San Jose ◽  
Norman Barr ◽  
Luc Leblanc ◽  
Daniel Rubinoff
Keyword(s):  
Haplotype Diversity ◽  
Fruit Fly ◽  
Coi Gene ◽  
Invasive Pest ◽  
Pest Species ◽  
Invasion Pathways ◽  
Geographic Ranges ◽  
Bactrocera Correcta ◽  
Invasive Pest Species ◽  
Source Populations

AbstractDistance decay principles predict that species with larger geographic ranges would have greater intraspecific genetic diversity than more restricted species. However, invasive pest species may not follow this prediction, with confounding implications for tracking phenomena including original ranges, invasion pathways and source populations. We sequenced an 815 base-pair section of the COI gene for 441 specimens of Bactrocera correcta, 214 B. zonata and 372 Zeugodacus cucurbitae; three invasive pest fruit fly species with overlapping hostplants. For each species, we explored how many individuals would need to be included in a study to sample the majority of their haplotype diversity. We also tested for phylogeographic signal and used demographic estimators as a proxy for invasion potency. We find contrasting patterns of haplotype diversity amongst the species, where B. zonata has the highest diversity but most haplotypes were represented by singletons; B. correcta has ∼7 dominant haplotypes more evenly distributed; Z. cucurbitae has a single dominant haplotype with closely related singletons in a ‘star-shape’ surrounding it. We discuss how these differing patterns relate to their invasion histories. None of the species showed meaningful phylogeographic patterns, possibly due to gene-flow between areas across their distributions, obscuring or eliminating substructuring.

scholarly journals Emergent and Possible Invasive Pest Species of Weevils in Mexico

2019 ◽  
Vol 102 (3) ◽  
pp. 480
Author(s):  
Robert W. Jones ◽  
Carlos Illescas-Riquelme ◽  
Víctor López-Martínez ◽  
Néstor Bautista-Martínez ◽  
Charles W. O'Brien
Keyword(s):  
Invasive Pest ◽  
Pest Species ◽  
Invasive Pest Species

scholarly journals Uncovering the microbiome of invasive sympatric European brown hares and European rabbits in Australia

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e9564
Author(s):  
Somasundhari Shanmuganandam ◽  
Yiheng Hu ◽  
Tanja Strive ◽  
Benjamin Schwessinger ◽  
Robyn N. Hall
Keyword(s):  
Lepus Europaeus ◽  
Invasive Pest ◽  
Pest Species ◽  
Gastrointestinal Microbiota ◽  
European Hare ◽  
Microbiome Composition ◽  
Invasive Pest Species ◽  
European Rabbits ◽  
Sequencing Platforms ◽  
Faecal Microbiome

Background European brown hares (Lepus europaeus) and European rabbits (Oryctolagus cuniculus) are invasive pest species in Australia, with rabbits having a substantially larger environmental impact than hares. As their spatial distribution in Australia partially overlaps, we conducted a comparative microbiome study to determine how the composition of gastrointestinal microbiota varies between these species, since this may indicate species differences in diet, physiology, and other internal and external factors. Methods We analysed the faecal microbiome of nine wild hares and twelve wild rabbits from a sympatric periurban reserve in Canberra, Australia, using a 16S rRNA amplicon-based sequencing approach. Additionally, we compared the concordance between results from Illumina and Nanopore sequencing platforms. Results We identified significantly more variation in faecal microbiome composition between individual rabbits compared to hares, despite both species occupying a similar habitat. The faecal microbiome in both species was dominated by the phyla Firmicutes and Bacteroidetes, typical of many vertebrates. Many phyla, including Actinobacteria, Proteobacteria and Patescibacteria, were shared between rabbits and hares. In contrast, bacteria from phylum Verrucomicrobia were present only in rabbits, while phyla Lentisphaerae and Synergistetes were represented only in hares. We did not identify phylum Spirochaetes in Australian hares; this phylum was previously shown to be present at high relative abundance in European hare faecal samples. These differences in the composition of faecal microbiota may be indicative of less discriminate foraging behaviour in rabbits, which in turn may enable them to adapt quicker to new environments, and may reflect the severe environmental impacts that this species has in Australia.

scholarly journals The Maximum Pest Limit Concept Explained

2003 ◽  
Vol 4 (1) ◽  
pp. 19
Author(s):  
Gareth Hughes
Keyword(s):  
Sample Size ◽  
Treatment Efficacy ◽  
Practical Method ◽  
Invasive Pest ◽  
Pest Species ◽  
Security Measures ◽  
Limit Concept ◽  
Regulatory Authorities ◽  
Upper Limit ◽  
Invasive Pest Species

The maximum pest limit (MPL) concept was developed as a practical method of implementing quarantine security measures against the import of invasive pest species of plants. The MPL itself is simply a threshold upper limit, above which the pest species in question is deemed capable of establishing a population if imported in a consignment of fruit or vegetables. This limit depends on various biological and ecological characteristics of the pest species in question. Important aspects of implementation relate to how treatment and sampling may be combined to reduce the probability that the MPL will be exceeded. If a specified level of treatment efficacy is required (for example, probit nine level), then choice of an appropriate sample size becomes the main problem for regulatory authorities seeking to maintain quarantine security. Accepted for publication 16 December 2002. Published 13 November 2003.

scholarly journals Context-Dependence and the Development of Push-Pull Approaches for Integrated Management of Drosophila suzukii

Insects ◽  
2019 ◽  
Vol 10 (12) ◽  
pp. 454 ◽  
Author(s):  
Jeroen T. Alkema ◽  
Marcel Dicke ◽  
Bregje Wertheim
Keyword(s):  
Systems Approach ◽  
Integrated Management ◽  
Physiological State ◽  
Crop Protection ◽  
Context Dependence ◽  
Context Dependency ◽  
Invasive Pest ◽  
Pest Species ◽  
Drosophila Suzukii ◽  
Fundamental Knowledge

Sustainable pest control requires a systems approach, based on a thorough ecological understanding of an agro-ecosystem. Such fundamental understanding provides a basis for developing strategies to manipulate the pest’s behaviour, distribution, and population dynamics, to be employed for crop protection. This review focuses on the fundamental knowledge required for the development of an effective push-pull approach. Push-pull is a strategy to repel a pest from a crop, while attracting it toward an external location. It often relies on infochemicals (e.g., pheromones or allelochemicals) that are relevant in the ecology of the pest insect and can be exploited as lure or repellent. Importantly, responsiveness of insects to infochemicals is dependent on both the insect’s internal physiological state and external environmental conditions. This context-dependency reflects the integration of cues from different sensory modalities, the effect of mating and/or feeding status, as well as diurnal or seasonal rhythms. Furthermore, when the costs of responding to an infochemical outweigh the benefits, resistance can rapidly evolve. Here, we argue that profound knowledge on context-dependence is important for the development and implementation of push-pull approaches. We illustrate this by discussing the relevant fundamental knowledge on the invasive pest species Drosophila suzukii as an example.

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