A literature review of dispersal pathways of Aedes albopictus across different spatial scales: implications for vector surveillance

Parasites & Vectors, Journal Year: 2022, Volume and Issue: 15(1)

Published: Aug. 27, 2022

Abstract Background Aedes albopictus is a highly invasive species and an important vector of dengue chikungunya viruses. Indigenous to Southeast Asia, Ae. has successfully invaded every inhabited continent, except Antarctica, in the past 80 years. Vector surveillance control at points entry (PoE) most critical front line defence against introduction new areas. Identifying pathways by which are introduced key implementing effective rapidly detect introductions eliminate them. Methods A literature review was conducted identify studies data sources reporting known suspected dispersal human-mediated between 1940–2020. Studies first country were selected for extraction analyses. Results Between 1940–2020, reported via various into 86 countries. Two main identified: (1) global continental spatial scales, maritime sea transport pathway countries middle late 20th Century, with ships carrying used tyres particular importance during 1980s 1990s, (2) national passive transportation ground vehicles lesser extent trade appear be major drivers countries, especially Europe. Finally, spread numerous remains unknown, from 1990s onwards. Conclusions This identified leading highlighted gaps our understanding pathways. Relevant advances genomic tracking techniques presented discussed context improving surveillance. Graphical

Language: Английский

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Global, asynchronous partial sweeps at multiple insecticide resistance genes in Aedes mosquitoes

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: July 24, 2024

Abstract Aedes aegypti (yellow fever mosquito) and Ae. albopictus (Asian tiger are globally invasive pests that confer the world’s dengue burden. Insecticide-based management has led to evolution of insecticide resistance in both species, though genetic architecture geographical spread remains incompletely understood. This study investigates partial selective sweeps at genes on two chromosomes characterises their across populations. Sweeps voltage-sensitive sodium channel ( VSSC ) gene chromosome 3 correspond one resistance-associated nucleotide substitution three , including substitutions same position (F1534C) have evolved independently. In we also identify a second locus 2. contains 15 glutathione S-transferase GST epsilon class with significant copy number variation among populations where distinct backgrounds Indo-Pacific region, Americas, Australia. Local patterns linkage networks indicate probably different times interact locally produce phenotypes. These findings highlight rapid global evidence for critical importance evolution.

Language: Английский

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Genetic diversity and population structure of Aedes caspius in Iran

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: April 29, 2025

The floodwater mosquito Aedes caspius is a competent vector of several human pathogens and has global distribution across Asia, Europe, Africa, the Americas. This study aimed to investigate genetic diversity population structure Ae. from Iran. mosquitoes were collected Iran, was assessed using mitochondrial DNA-encoded cytochrome c oxidase subunit I (mtDNA-COI) gene. BLAST analysis confirmed morphological identification all specimens as caspius, with 100% similarity GenBank sequences. Haplotype (Hd) haplotype variance based on COI gene found be 0.954 0.00006, respectively. Nucleotide (Pi) sequences calculated 0.01495, 56 segregation sites identified. Phylogenetic demonstrated high in Iranian populations, suggesting its long-standing establishment Iran indicating native status. origin this may linked populations United Arab Emirates (UAE), Pakistan, China, Europe. Further studies should explore variability various countries continents.

Language: Английский

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Insecticide resistance in malaria and arbovirus vectors in Papua New Guinea, 2017–2022

Parasites & Vectors, Journal Year: 2022, Volume and Issue: 15(1)

Published: Nov. 14, 2022

Insecticide resistance (IR) monitoring is essential for evidence-based control of mosquito-borne diseases. While widespread pyrethroid in Anopheles and Aedes species has been described many countries, data Papua New Guinea (PNG) are limited. Available indicate that the local populations PNG remain pyrethroid-susceptible, making regular IR even more important. In addition, aegypti PNG. Here, generated from across between 2017 2022 presented.

Language: Английский

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The updated genome of the Hungarian population of Aedes koreicus

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: March 30, 2024

Abstract Vector-borne diseases pose a potential risk to human and animal welfare, understanding their spread requires genomic resources. The mosquito Aedes koreicus is an emerging vector that has been introduced into Europe more than 15 years ago but only low quality, fragmented genome was available. In this study, we carried out additional sequencing assembled characterized the of species provide background for its evolution biology. updated 1.1 Gbp long consisted 6099 contigs with N50 value 329,610 bp BUSCO score 84%. We identified 22,580 genes could be functionally annotated paid particular attention identification insecticide resistance genes. assessment orthology indicates high turnover at terminal branches tree mosquitoes complete genomes, which contribute adaptation evolutionary success species. These results form basis numerous downstream analyzes develop targets control populations.

Language: Английский

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Robustness in population-structure and demographic-inference results derived from the Aedes aegypti genotyping chip and whole-genome sequencing data

G3 Genes Genomes Genetics, Journal Year: 2024, Volume and Issue: 14(6)

Published: April 16, 2024

The mosquito Aedes aegypti is the primary vector of many human arboviruses such as dengue, yellow fever, chikungunya, and Zika, which affect millions people worldwide. Population genetic studies on this have been important in understanding its invasion pathways success a disease. Axiom aegypti1 SNP chip was developed from sample geographically diverse A. populations to facilitate genomic species. We evaluate utility for population genetics compare it with low-depth shotgun sequencing approach using mosquitoes native (Africa) invasive ranges (outside Africa). These analyses indicate that results are highly reproducible higher sensitivity capture alternative alleles than low-coverage whole-genome approach. Although suffers ascertainment bias, structure, ancestry, demographic, phylogenetic were congruent those derived sequencing, consistent previous reports Africa outside microsatellites. More importantly, we identified subset SNPs can be reliably used generate merged databases, opening door combined analyses. conclude convenient, more accurate, low-cost do not rely full allelic frequency spectra. Whole-genome data easily merged, extending usefulness both approaches.

Language: Английский

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A regional One Health approach to the risk of invasion by Anopheles stephensi in Mauritius

PLoS neglected tropical diseases, Journal Year: 2024, Volume and Issue: 18(9), P. e0011827 - e0011827

Published: Sept. 11, 2024

Background Anopheles stephensi is an invasive malaria vector in Africa that threatens to put additional 126 million people at risk of if it continues spread. The island nation Mauritius highly connected Asia and introduction due this connectivity. For early detection An . , the Vector Biology Control Division under Ministry Health Mauritius, leveraged a well-established Aedes program, as known share habitats. These efforts triggered multisectoral coordination cascading benefits integrated One approaches. Methods Beginning June 2021, entomological surveys were conducted points entry (seaport, airport) on ships transporting livestock collaboration with Civil Aviation Department, Mauritian Port Authority National Veterinary Services. A total 18, 39, 723 mosquito larval respectively airport, seaport, other localities while two, 20, 26 adult twenty-six animal assembly points. Alongside surveys, surveillance vectors veterinary importance (e.g.- Culicoides spp.) was also carried out Parks Conservation Service land owners. Results 8,428 mosquitoes collected 1,844 habitats positive for mosquitoes. All morphologically identified 151 339 molecularly characterized. Mosquito species detected albopictus arabiensis coustani merus Culex quinquefasciatus Cx thalassius Lutzia tigripes not detected. approach shared French Agricultural Research Centre International Development (CIRAD), strengthening between Réunion Island insecticide resistance monitoring. Indian Ocean Commission (IOC) alerted leading regional supporting trainings development response strategy bringing together stakeholders from Comoros, Madagascar, Seychelles. Conclusions model system showing how existing public health entomology capabilities can be used enhance control create networks respond any emerging vector-borne disease threat.

Language: Английский

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The EnigmaticCulex pipiens(Diptera: Culicidae) Species Complex: Phylogenetic Challenges and Opportunities From a Notoriously Tricky Mosquito Group

Annals of the Entomological Society of America, Journal Year: 2021, Volume and Issue: 115(1), P. 95 - 104

Published: Sept. 8, 2021

Abstract Our understanding of how natural selection and demographic processes produce maintain biological diversity remains limited. However, developments in high-throughput genomic sequencing coupled with new analytical tools phylogenetic methods now allow detailed analyses evolutionary patterns genes genomes responding to specific events, ecological changes, or other pressures. Here, we propose that the mosquitoes Culex pipiens complex, which include taxa significant medical importance, provide an exceptional system for examining mechanisms underlying speciation taxonomic radiation. Furthermore, these insects may shed light on influences historical contemporary admixture have integrity. Such studies will importance mitigating disease nuisance burdens caused by mosquitoes. More broadly, they could inform predictions about future trajectories response changing environments evolution cosmopolitan invasive species developed recent associations humans.

Language: Английский

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Research pre-empting parasite adaptation is key to sustainable disease management in aquaculture

Aquaculture Environment Interactions, Journal Year: 2023, Volume and Issue: 15, P. 35 - 43

Published: Jan. 9, 2023

As the aquaculture sector continues to expand, there is likely be a growing need combat infectious diseases. The desire for rapid and effective results means that any concerns about longer-term effects of disease controls are often sidelined. In particular, well-documented capacity parasites pathogens evolve treatment resistance must not ignored in aquaculture. Outbreaks resistant pose significant threats environment, as well farm production. If an industry wishes avoid resistance, first committed research into evolutionary biology parasite species. Such should incorporated early phases developing implementing strategy—the sooner risk identified, its impacts on can mitigated. Here I discuss framework help guide this process. A combination theoretical (reviewing literature), empirical (testing heritable resistance) modelling (simulating dynamics) studies recommended. Armed with knowledge from these studies, management strategies then optimised at regional scale (e.g. refugia or combinations) ways minimise potential adaptation. interaction between salmonid parasitic sea lice ideal case study topic, insights gained system considered across industries. Nevertheless, no one-size-fits-all solution resistance. For each system, dedicated biology—with guide—is required home most sustainable future.

Language: Английский

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Dense residential areas promote gene flow in dengue vector mosquito Aedes albopictus

iScience, Journal Year: 2023, Volume and Issue: 26(9), P. 107577 - 107577

Published: Aug. 10, 2023

Aedes albopictus is a successful disease vector due to its ability survive in wide range of habitats. Despite ubiquity and impact on public health, little known about differential gene flow capabilities across different city We obtained comprehensive dataset >27,000 genome-wide DNA markers 105 wild-caught Ae. individuals from Singapore, dengue-endemic tropical with heterogeneous landscapes densely populated urban areas forests. Singapore's challenging small-scale heterogeneity, our landscape-genomic approach indicated that dense are characterized by higher rates than managed parks documented the incidence Wolbachia infections involving two strains (wAlbA wAlbB). Our results dispel misconception substantial dispersal limited greenery, implications for management critical insights into planning strategies combat dengue transmission.

Language: Английский

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