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Ciocchetta S, Frentiu FD, Montarsi F, Capelli G, Devine GJ. Investigation on key aspects of mating biology in the mosquito Aedes koreicus. MEDICAL AND VETERINARY ENTOMOLOGY 2023; 37:826-833. [PMID: 37622600 DOI: 10.1111/mve.12687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 07/27/2023] [Indexed: 08/26/2023]
Abstract
Aedes koreicus Edwards, 1917 (Hulecoetomyia koreica) is a mosquito (Diptera: Culicidae) from Northeast Asia with a rapidly expanding presence outside its original native range. Over the years, the species has been discovered in several new countries, either spreading after first introduction or remaining localised to limited areas. Notably, recent studies have demonstrated the ability of the species to transmit zoonotic parasites and viruses both in the field and in laboratory settings. Combined with its invasive potential, the possible role of Ae. koreicus in pathogen transmission highlights the public health risks resulting from its invasion. In this study, we used a recently established population from Italy to investigate aspects of biology that influence reproductive success in Ae. koreicus: autogeny, mating behaviour, mating disruption by the sympatric invasive species Aedes albopictus Skuse, 1894, and the presence of the endosymbiont Wolbachia pipientis Hertig, 1936. Our laboratory population did not exhibit autogenic behaviour and required a bloodmeal to complete its ovarian cycle. When we exposed Ae. koreicus females to males of Ae. albopictus, we observed repeated attempts at insemination and an aggressive, disruptive mating behaviour initiated by male Ae. albopictus. Despite this, no sperm was identified in Ae. koreicus spermathecae. Wolbachia, an endosymbiotic bacterium capable of influencing mosquito reproductive behaviour, was not detected in this Ae. koreicus population and, therefore, had no effect on Ae. koreicus reproduction.
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Affiliation(s)
- Silvia Ciocchetta
- School of Veterinary Science, Faculty of Science, The University of Queensland, Gatton, Queensland, Australia
- School of Biomedical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia
- Mosquito Control Laboratory, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
| | - Francesca D Frentiu
- School of Biomedical Sciences, Queensland University of Technology, Brisbane, Queensland, Australia
- Centre for Immunology and Infection Control, Queensland University of Technology, Brisbane, Queensland, Australia
| | - Fabrizio Montarsi
- Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro, Padua, Italy
| | - Gioia Capelli
- Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro, Padua, Italy
| | - Gregor J Devine
- Mosquito Control Laboratory, QIMR Berghofer Medical Research Institute, Brisbane, Queensland, Australia
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2
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Lühken R, Brattig N, Becker N. Introduction of invasive mosquito species into Europe and prospects for arbovirus transmission and vector control in an era of globalization. Infect Dis Poverty 2023; 12:109. [PMID: 38037192 PMCID: PMC10687857 DOI: 10.1186/s40249-023-01167-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 11/24/2023] [Indexed: 12/02/2023] Open
Abstract
BACKGROUND Mosquito research in Europe has a long history, primarily focused on malaria vectors. In recent years, invasive mosquito species like the Asian tiger mosquito (Aedes albopictus) and the spread of arboviruses like dengue virus, chikungunya virus or bluetongue virus have led to an intensification of research and monitoring in Europe. The risk of further dissemination of exotic species and mosquito-borne pathogens is expected to increase with ongoing globalization, human mobility, transport geography, and climate warming. Researchers have conducted various studies to understand the ecology, biology, and effective control strategies of mosquitoes and associated pathogens. MAIN BODY Three invasive mosquito species are established in Europe: Asian tiger mosquito (Aedes albopictus), Japanese bush mosquito (Ae. japonicus), and Korean bush mosquito (Aedes koreicus). Ae. albopictus is the most invasive species and has been established in Europe since 1990. Over the past two decades, there has been an increasing number of outbreaks of infections by mosquito-borne viruses in particular chikungunya virus, dengue virus or Zika virus in Europe primary driven by Ae. albopictus. At the same time, climate change with rising temperatures results in increasing threat of invasive mosquito-borne viruses, in particular Usutu virus and West Nile virus transmitted by native Culex mosquito species. Effective mosquito control programs require a high level of community participation, going along with comprehensive information campaigns, to ensure source reduction and successful control. Control strategies for container breeding mosquitoes like Ae. albopictus or Culex species involve community participation, door-to-door control activities in private areas. Further measures can involve integration of sterile insect techniques, applying indigenous copepods, Wolbachia sp. bacteria, or genetically modified mosquitoes, which is very unlike to be practiced as standard method in the near future. CONCLUSIONS Climate change and globalization resulting in the increased establishment of invasive mosquitoes in particular of the Asian tiger mosquito Ae. albopictus in Europe within the last 30 years and increasing outbreaks of infections by mosquito-borne viruses warrants intensification of research and monitoring. Further, effective future mosquito control programs require increase in intense community and private participation, applying physical, chemical, biological, and genetical control activities.
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Affiliation(s)
- Renke Lühken
- Bernhard Nocht Institute for Tropical Medicine, 20359, Hamburg, Germany.
| | - Norbert Brattig
- Bernhard Nocht Institute for Tropical Medicine, 20359, Hamburg, Germany
| | - Norbert Becker
- Institute for Dipterology, 67346, Speyer, Germany
- Institute for Organismal Studies (COS), University of Heidelberg, 69117, Heidelberg, Germany
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3
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Sauer FG, Pfitzner WP, Jöst H, Rauhöft L, Kliemke K, Lange U, Heitmann A, Jansen S, Lühken R. Using geometric wing morphometrics to distinguish Aedes japonicus japonicus and Aedes koreicus. Parasit Vectors 2023; 16:418. [PMID: 37968721 PMCID: PMC10648383 DOI: 10.1186/s13071-023-06038-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 10/30/2023] [Indexed: 11/17/2023] Open
Abstract
BACKGROUND Aedes japonicus japonicus (Theobald, 1901) and Aedes koreicus (Edwards, 1917) have rapidly spread in Europe over the last decades. Both species are very closely related and occur in sympatry. Females and males are difficult to distinguish. However, the accurate species discrimination is important as both species may differ in their vectorial capacity and spreading behaviour. In this study, we assessed the potential of geometric wing morphometrics as alternative to distinguish the two species. METHODS A total of 147 Ae. j. japonicus specimens (77 females and 70 males) and 124 Ae. koreicus specimens (67 females and 57 males) were collected in southwest Germany. The left wing of each specimen was removed, mounted and photographed. The coordinates of 18 landmarks on the vein crosses were digitalised by a single observer. The resulting two-dimensional dataset was used to analyse the differences in the wing size (i.e. centroid size) and wing shape between Ae. j. japonicus and Ae. koreicus using geometric morphometrics. To analyse the reproducibility of the analysis, the landmark collection was repeated for 20 specimens per sex and species by two additional observers. RESULTS The wing size in female Ae. koreicus was significantly greater than in Ae. j. japonicus but did not differ significantly for males. However, the strong overlap in wing size also for the females would not allow to discriminate the two species. In contrast, the wing shape clustering was species specific and a leave-one-out validation resulted in a reclassification accuracy of 96.5% for the females and 91.3% for the males. The data collected by different observers resulted in a similar accuracy, indicating a low observer bias for the landmark collection. CONCLUSIONS Geometric wing morphometrics provide a reliable and robust tool to distinguish female and male specimens of Ae. j. japonicus and Ae. koreicus.
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Affiliation(s)
- Felix G Sauer
- Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany.
| | - Wolf Peter Pfitzner
- Kommunale Aktionsgemeinschaft Zur Bekämpfung Der Schnakenplage e. V. (KABS), Georg-Peter-Süß-Str. 3, 67346, Speyer, Germany
| | - Hanna Jöst
- Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany
| | - Leif Rauhöft
- Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany
| | | | - Unchana Lange
- Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany
| | - Anna Heitmann
- Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany
| | - Stephanie Jansen
- Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany
- Faculty of Mathematics, Informatics and Natural Sciences, University of Hamburg, Hamburg, Germany
| | - Renke Lühken
- Bernhard Nocht Institute for Tropical Medicine, Hamburg, Germany
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4
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Liu Q, Xie JW, Wang M, Du YT, Yin ZG, Zhou NX, Zhao TY, Huang EJ, Zhang HD. Potential Global Distribution of the Invasive Mosquito Aedes koreicus under a Changing Climate. Trop Med Infect Dis 2023; 8:471. [PMID: 37888599 PMCID: PMC10610658 DOI: 10.3390/tropicalmed8100471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 10/02/2023] [Accepted: 10/08/2023] [Indexed: 10/28/2023] Open
Abstract
Invasive alien species are a growing threat to natural systems, the economy, and human health. Active surveillance and responses that readily suppress newly established colonies are effective actions to mitigate the noxious consequences of biological invasions. Aedes (Hulecoeteomyia) koreicus (Edwards), a mosquito species native to East Asia, has spread to parts of Europe and Central Asia since 2008. In the last decade, Ae. koreicus has been shown to be a competent vector for chikungunya virus and Dirofilaria immitis. However, information about the current and potential distribution of Ae. koreicus is limited. Therefore, to understand the changes in their global distribution and to contribute to the monitoring and control of Ae. koreicus, in this study, the MaxEnt model was used to predict and analyze the current suitable distribution area of Ae. koreicus in the world to provide effective information.
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Affiliation(s)
- Qing Liu
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China; (Q.L.); (J.-W.X.); (M.W.); (Y.-T.D.); (Z.-G.Y.); (N.-X.Z.); (T.-Y.Z.)
| | - Jing-Wen Xie
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China; (Q.L.); (J.-W.X.); (M.W.); (Y.-T.D.); (Z.-G.Y.); (N.-X.Z.); (T.-Y.Z.)
- The School of Public Health, Fujian Medical University, Fuzhou 350000, China
| | - Ming Wang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China; (Q.L.); (J.-W.X.); (M.W.); (Y.-T.D.); (Z.-G.Y.); (N.-X.Z.); (T.-Y.Z.)
| | - Yu-Tong Du
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China; (Q.L.); (J.-W.X.); (M.W.); (Y.-T.D.); (Z.-G.Y.); (N.-X.Z.); (T.-Y.Z.)
| | - Zi-Ge Yin
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China; (Q.L.); (J.-W.X.); (M.W.); (Y.-T.D.); (Z.-G.Y.); (N.-X.Z.); (T.-Y.Z.)
| | - Ning-Xin Zhou
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China; (Q.L.); (J.-W.X.); (M.W.); (Y.-T.D.); (Z.-G.Y.); (N.-X.Z.); (T.-Y.Z.)
| | - Tong-Yan Zhao
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China; (Q.L.); (J.-W.X.); (M.W.); (Y.-T.D.); (Z.-G.Y.); (N.-X.Z.); (T.-Y.Z.)
| | - En-Jiong Huang
- The School of Public Health, Fujian Medical University, Fuzhou 350000, China
- Fuzhou International Travel Health Care Center, Fuzhou 350001, China
| | - Heng-Duan Zhang
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China; (Q.L.); (J.-W.X.); (M.W.); (Y.-T.D.); (Z.-G.Y.); (N.-X.Z.); (T.-Y.Z.)
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5
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Delrieu M, Martinet JP, O’Connor O, Viennet E, Menkes C, Burtet-Sarramegna V, Frentiu FD, Dupont-Rouzeyrol M. Temperature and transmission of chikungunya, dengue, and Zika viruses: A systematic review of experimental studies on Aedes aegypti and Aedes albopictus. CURRENT RESEARCH IN PARASITOLOGY & VECTOR-BORNE DISEASES 2023; 4:100139. [PMID: 37719233 PMCID: PMC10500480 DOI: 10.1016/j.crpvbd.2023.100139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 08/11/2023] [Accepted: 08/16/2023] [Indexed: 09/19/2023]
Abstract
Mosquito-borne viruses are leading causes of morbidity and mortality in many parts of the world. In recent years, modelling studies have shown that climate change strongly influences vector-borne disease transmission, particularly rising temperatures. As a result, the risk of epidemics has increased, posing a significant public health risk. This review aims to summarize all published laboratory experimental studies carried out over the years to determine the impact of temperature on the transmission of arboviruses by the mosquito vector. Given their high public health importance, we focus on dengue, chikungunya, and Zika viruses, which are transmitted by the mosquitoes Aedes aegypti and Aedes albopictus. Following PRISMA guidelines, 34 papers were included in this systematic review. Most studies found that increasing temperatures result in higher rates of infection, dissemination, and transmission of these viruses in mosquitoes, although several studies had differing findings. Overall, the studies reviewed here suggest that rising temperatures due to climate change would alter the vector competence of mosquitoes to increase epidemic risk, but that some critical research gaps remain.
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Affiliation(s)
- Méryl Delrieu
- Institut Pasteur de Nouvelle-Calédonie, Institut Pasteur International
Network, URE Dengue et Arborises, Nouméa 98845, New Caledonia
| | - Jean-Philippe Martinet
- Institut Pasteur de Nouvelle-Calédonie, Institut Pasteur International
Network, URE Dengue et Arborises, Nouméa 98845, New Caledonia
| | - Olivia O’Connor
- Institut Pasteur de Nouvelle-Calédonie, Institut Pasteur International
Network, URE Dengue et Arborises, Nouméa 98845, New Caledonia
| | - Elvina Viennet
- School of Biomedical Sciences, Queensland University of Technology,
Kelvin Grove, QLD 4059, Australia
| | - Christophe Menkes
- ENTROPIE, IRD, University of New Caledonia, University of La Réunion,
CNRS, Ifremer, Nouméa, New Caledonia
| | - Valérie Burtet-Sarramegna
- Institute of Exact and Applied Sciences (ISEA), University of New
Caledonia, 45 Avenue James Cook - BP R4 98 851 - Nouméa Cedex, New
Caledonia
| | - Francesca D. Frentiu
- School of Biomedical Sciences, And Centre for Immunology and Infection
Control, Queensland University of Technology, Brisbane, QLD 4000,
Australia
| | - Myrielle Dupont-Rouzeyrol
- Institut Pasteur de Nouvelle-Calédonie, Institut Pasteur International
Network, URE Dengue et Arborises, Nouméa 98845, New Caledonia
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Rossi B, Barreca F, Benvenuto D, Braccialarghe N, Campogiani L, Lodi A, Aguglia C, Cavasio RA, Giacalone ML, Kontogiannis D, Moccione M, Malagnino V, Andreoni M, Sarmati L, Iannetta M. Human Arboviral Infections in Italy: Past, Current, and Future Challenges. Viruses 2023; 15:v15020368. [PMID: 36851582 PMCID: PMC9963149 DOI: 10.3390/v15020368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/23/2023] [Accepted: 01/24/2023] [Indexed: 02/03/2023] Open
Abstract
Arboviruses represent a public health concern in many European countries, including Italy, mostly because they can infect humans, causing potentially severe emergent or re-emergent diseases, with epidemic outbreaks and the introduction of endemic circulation of new species previously confined to tropical and sub-tropical regions. In this review, we summarize the Italian epidemiology of arboviral infection over the past 10 years, describing both endemic and imported arboviral infections, vector distribution, and the influence of climate change on vector ecology. Strengthening surveillance systems at a national and international level is highly recommended to be prepared to face potential threats due to arbovirus diffusion.
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Affiliation(s)
- Benedetta Rossi
- Infectious Disease Clinic, Policlinico Tor Vergata University Hospital, Viale Oxford 81, 00133 Rome, Italy
| | - Filippo Barreca
- Department of System Medicine Tor Vergata, University of Rome, Via Montpellier 1, 00133 Rome, Italy
| | - Domenico Benvenuto
- Department of System Medicine Tor Vergata, University of Rome, Via Montpellier 1, 00133 Rome, Italy
| | - Neva Braccialarghe
- Department of System Medicine Tor Vergata, University of Rome, Via Montpellier 1, 00133 Rome, Italy
| | - Laura Campogiani
- Infectious Disease Clinic, Policlinico Tor Vergata University Hospital, Viale Oxford 81, 00133 Rome, Italy
| | - Alessandra Lodi
- Department of System Medicine Tor Vergata, University of Rome, Via Montpellier 1, 00133 Rome, Italy
| | - Camilla Aguglia
- Department of System Medicine Tor Vergata, University of Rome, Via Montpellier 1, 00133 Rome, Italy
| | | | - Maria Laura Giacalone
- Department of System Medicine Tor Vergata, University of Rome, Via Montpellier 1, 00133 Rome, Italy
| | - Dimitra Kontogiannis
- Department of System Medicine Tor Vergata, University of Rome, Via Montpellier 1, 00133 Rome, Italy
| | - Martina Moccione
- Department of System Medicine Tor Vergata, University of Rome, Via Montpellier 1, 00133 Rome, Italy
| | - Vincenzo Malagnino
- Infectious Disease Clinic, Policlinico Tor Vergata University Hospital, Viale Oxford 81, 00133 Rome, Italy
- Department of System Medicine Tor Vergata, University of Rome, Via Montpellier 1, 00133 Rome, Italy
| | - Massimo Andreoni
- Infectious Disease Clinic, Policlinico Tor Vergata University Hospital, Viale Oxford 81, 00133 Rome, Italy
- Department of System Medicine Tor Vergata, University of Rome, Via Montpellier 1, 00133 Rome, Italy
| | - Loredana Sarmati
- Infectious Disease Clinic, Policlinico Tor Vergata University Hospital, Viale Oxford 81, 00133 Rome, Italy
- Department of System Medicine Tor Vergata, University of Rome, Via Montpellier 1, 00133 Rome, Italy
| | - Marco Iannetta
- Infectious Disease Clinic, Policlinico Tor Vergata University Hospital, Viale Oxford 81, 00133 Rome, Italy
- Department of System Medicine Tor Vergata, University of Rome, Via Montpellier 1, 00133 Rome, Italy
- Correspondence:
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Vector Competence of Mosquitoes from Germany for Sindbis Virus. Viruses 2022; 14:v14122644. [PMID: 36560650 PMCID: PMC9785343 DOI: 10.3390/v14122644] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 11/21/2022] [Accepted: 11/23/2022] [Indexed: 11/29/2022] Open
Abstract
Transmission of arthropod-borne viruses (arboviruses) are an emerging global health threat in the last few decades. One important arbovirus family is the Togaviridae, including the species Sindbis virus within the genus Alphavirus. Sindbis virus (SINV) is transmitted by mosquitoes, but available data about the role of different mosquito species as potent vectors for SINV are scarce. Therefore, we investigated seven mosquito species, collected from the field in Germany (Ae. koreicus, Ae. geniculatus, Ae. sticticus, Cx. torrentium, Cx. pipiens biotype pipiens) as well as lab strains (Ae. albopictus, Cx. pipiens biotype molestus, Cx. quinquefasciatus), for their vector competence for SINV. Analysis was performed via salivation assay and saliva was titrated to calculate the amount of infectious virus particles per saliva sample. All Culex and Aedes species were able to transmit SINV. Transmission could be detected at all four investigated temperature profiles (of 18 ± 5 °C, 21 ± 5 °C, 24 ± 5 °C or 27 ± 5 °C), and no temperature dependency could be observed. The concentration of infectious virus particles per saliva sample was in the same range for all species, which may suggest that all investigated mosquito species are able to transmit SINV in Germany.
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8
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Da Re D, Van Bortel W, Reuss F, Müller R, Boyer S, Montarsi F, Ciocchetta S, Arnoldi D, Marini G, Rizzoli A, L'Ambert G, Lacour G, Koenraadt CJM, Vanwambeke SO, Marcantonio M. dynamAedes: a unified modelling framework for invasive Aedes mosquitoes. Parasit Vectors 2022; 15:414. [PMID: 36348368 PMCID: PMC9641901 DOI: 10.1186/s13071-022-05414-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 07/27/2022] [Indexed: 11/11/2022] Open
Abstract
Mosquito species belonging to the genus Aedes have attracted the interest of scientists and public health officers because of their capacity to transmit viruses that affect humans. Some of these species were brought outside their native range by means of trade and tourism and then colonised new regions thanks to a unique combination of eco-physiological traits. Considering mosquito physiological and behavioural traits to understand and predict their population dynamics is thus a crucial step in developing strategies to mitigate the local densities of invasive Aedes populations. Here, we synthesised the life cycle of four invasive Aedes species (Ae. aegypti, Ae. albopictus, Ae. japonicus and Ae. koreicus) in a single multi-scale stochastic modelling framework which we coded in the R package dynamAedes. We designed a stage-based and time-discrete stochastic model driven by temperature, photo-period and inter-specific larval competition that can be applied to three different spatial scales: punctual, local and regional. These spatial scales consider different degrees of spatial complexity and data availability by accounting for both active and passive dispersal of mosquito species as well as for the heterogeneity of the input temperature data. Our overarching aim was to provide a flexible, open-source and user-friendly tool rooted in the most updated knowledge on the species' biology which could be applied to the management of invasive Aedes populations as well as to more theoretical ecological inquiries.
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Affiliation(s)
- Daniele Da Re
- Georges Lemaître Center for Earth and Climate Research, Earth and Life Institute, UCLouvain, Louvain-la-Neuve, Belgium.
| | - Wim Van Bortel
- Unit Entomology and the Outbreak Research Team, Tropical Medicine Institute, Antwerp, Belgium
| | - Friederike Reuss
- Senckenberg Biodiversity and Climate Research Centre, Frankfurt am Main, Germany
- Institute of Occupational, Social and Environmental Medicine, Goethe University, Frankfurt am Main, Germany
| | - Ruth Müller
- Unit Entomology and the Outbreak Research Team, Tropical Medicine Institute, Antwerp, Belgium
| | - Sebastien Boyer
- Medical and Veterinary Entomology Unit, Institute Pasteur du Cambodge, Phnom Penh, Cambodia
| | - Fabrizio Montarsi
- Laboratory of Parasitology, National reference centre/OIE collaborating centre for diseases at the animal-human interface, Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro, Italy
| | - Silvia Ciocchetta
- The University of Queensland, School of Veterinary Science, Gatton, Australia
| | - Daniele Arnoldi
- Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, Italy
| | - Giovanni Marini
- Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, Italy
| | - Annapaola Rizzoli
- Research and Innovation Centre, Fondazione Edmund Mach, San Michele all'Adige, Italy
| | | | | | - Constantianus J M Koenraadt
- Wageningen University & Research, Department of Plant Sciences, Laboratory of Entomology, Wageningen, The Netherlands
| | - Sophie O Vanwambeke
- Georges Lemaître Center for Earth and Climate Research, Earth and Life Institute, UCLouvain, Louvain-la-Neuve, Belgium
| | - Matteo Marcantonio
- Evolutionary Ecology and Genetics Group, Earth and Life Institute, UC Louvain, Louvain-la-Neuve, Belgium.
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Vojtíšek J, Šebesta O, Šikutová S, Kampen H, Rudolf I. First record of the invasive mosquito species Aedes koreicus (Diptera: Culicidae) in the Czech Republic. Parasitol Res 2022; 121:3701-3704. [PMID: 36178512 DOI: 10.1007/s00436-022-07658-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 09/05/2022] [Indexed: 10/14/2022]
Abstract
Aedes koreicus is an invasive mosquito species originating from East Asia. It has recently been introduced into several countries in Southern, Central and Eastern Europe as well as Central Asia in many of which it has successfully established populations. The biology and ecological requirements of the species are largely unknown, but it is considered as a potential vector of pathogens that requires careful monitoring. We report here the first detection of Ae. koreicus in the Czech Republic, based on a citizen report.
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Affiliation(s)
- Jakub Vojtíšek
- The Czech Academy of Sciences, Institute of Vertebrate Biology, Brno, Czech Republic.,Department of Experimental Biology, Masaryk University, Brno, Czech Republic
| | - Oldřich Šebesta
- The Czech Academy of Sciences, Institute of Vertebrate Biology, Brno, Czech Republic
| | - Silvie Šikutová
- The Czech Academy of Sciences, Institute of Vertebrate Biology, Brno, Czech Republic
| | - Helge Kampen
- Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Greifswald - Insel Riems, Germany
| | - Ivo Rudolf
- The Czech Academy of Sciences, Institute of Vertebrate Biology, Brno, Czech Republic. .,Department of Experimental Biology, Masaryk University, Brno, Czech Republic.
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10
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Montarsi F, Rosso F, Arnoldi D, Ravagnan S, Marini G, Delucchi L, Rosà R, Rizzoli A. First report of the blood-feeding pattern in Aedes koreicus, a new invasive species in Europe. Sci Rep 2022; 12:15751. [PMID: 36130985 PMCID: PMC9492761 DOI: 10.1038/s41598-022-19734-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Accepted: 09/02/2022] [Indexed: 11/10/2022] Open
Abstract
Aedes koreicus is an invasive mosquito species which has been introduced into several European countries. Compared to other invasive Aedes mosquitoes, little is known of its biology and ecology. To determine Ae. koreicus’ vectorial capacity, it is essential to establish its feeding patterns and level of anthropophagy. We report on the blood-feeding patterns of Ae. koreicus, examining the blood meal origin of engorged females and evaluating the influence of different biotic and abiotic factors on feeding behavior. Mosquitoes were collected in 23 sites in northern Italy by manual aspiration and BG-sentinel traps; host availability was estimated by survey. The source of blood meals was identified using a nested PCR and by targeting and sequencing the cytochrome c oxidase subunit I gene. In total, 352 Ae. koreicus engorged females were collected between 2013 and 2020 and host blood meals were determined from 299 blood-fed mosquitoes (84.9%). Eleven host species were identified, with the highest prevalences being observed among roe deer (Capreolus capreolus) (N = 189, 63.2%) and humans (N = 46, 15.4%). Blood meals were mostly taken from roe deer in forested sites and from humans in urban areas, suggesting that this species can feed on different hosts according to local abundance. Two blood meals were identified from avian hosts and one from lizard. Ae. koreicus’ mammalophilic feeding pattern suggests that it may be a potential vector of pathogens establishing transmission cycles among mammals, whereas its role as a bridge vector between mammals and birds could be negligible.
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Affiliation(s)
- Fabrizio Montarsi
- Istituto Zooprofilattico Sperimentale Delle Venezie, Legnaro, Padua, Italy.
| | - Fausta Rosso
- Research and Innovation Centre, Fondazione Edmund Mach, San Michele All'Adige, TN, Italy
| | - Daniele Arnoldi
- Research and Innovation Centre, Fondazione Edmund Mach, San Michele All'Adige, TN, Italy
| | - Silvia Ravagnan
- Istituto Zooprofilattico Sperimentale Delle Venezie, Legnaro, Padua, Italy
| | - Giovanni Marini
- Research and Innovation Centre, Fondazione Edmund Mach, San Michele All'Adige, TN, Italy
| | - Luca Delucchi
- Research and Innovation Centre, Fondazione Edmund Mach, San Michele All'Adige, TN, Italy
| | - Roberto Rosà
- Research and Innovation Centre, Fondazione Edmund Mach, San Michele All'Adige, TN, Italy.,Center Agriculture Food Environment, University of Trento, San Michele All'Adige, TN, Italy
| | - Annapaola Rizzoli
- Research and Innovation Centre, Fondazione Edmund Mach, San Michele All'Adige, TN, Italy
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11
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Marini G, Arnoldi D, Inama E, Rizzoli A. Diapause characterization in the invasive alien mosquito species Aedes koreicus: a laboratory experiment. Parasit Vectors 2022; 15:315. [PMID: 36068549 PMCID: PMC9450311 DOI: 10.1186/s13071-022-05376-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 06/26/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract Aedes koreicus is an invasive alien mosquito species native to Asia now introduced in several European countries, including northern Italy. In this temperate region, mosquito populations survive cold winter temperatures thanks to diapausing eggs or adults, depending on the species. In its native area, Ae. koreicus was reported to overwinter in the egg stage, but to the best of our knowledge, it is not confirmed whether overwintering eggs are actually diapausing or only in a quiescence stage, i.e., they might hatch as soon as external conditions are favorable. Based on previous laboratory studies, we established a diapausing Ae. koreicus colony, maintained at 21 °C with a photoperiod of 12L:12D. Females were allowed to lay eggs, which were consequently placed in water at different time intervals after oviposition, from 30 days to 5 months. We found that diapausing eggs younger than 3 months have a poor hatching rate, while after about 100 days we observed that almost all eggs hatched. Our findings highlight that water immersion alone did not lead to the hatching of eggs, as age was found to be a significantly important factor. We thus confirm effective diapause, occurring at the egg stage, for Ae. koreicus in a recently invaded area. Moreover, our quantification of diapause duration and hatching success might help in better designing future experiments and improving modeling efforts. Graphical Abstract ![]()
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Affiliation(s)
- Giovanni Marini
- Research and Innovation Centre, Fondazione Edmund Mach, San Michele All'Adige, TN, Italy.
| | - Daniele Arnoldi
- Research and Innovation Centre, Fondazione Edmund Mach, San Michele All'Adige, TN, Italy
| | - Enrico Inama
- Research and Innovation Centre, Fondazione Edmund Mach, San Michele All'Adige, TN, Italy
| | - Annapaola Rizzoli
- Research and Innovation Centre, Fondazione Edmund Mach, San Michele All'Adige, TN, Italy
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12
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Kurucz K, Zeghbib S, Arnoldi D, Marini G, Manica M, Michelutti A, Montarsi F, Deblauwe I, Van Bortel W, Smitz N, Pfitzner WP, Czajka C, Jöst A, Kalan K, Šušnjar J, Ivović V, Kuczmog A, Lanszki Z, Tóth GE, Somogyi BA, Herczeg R, Urbán P, Bueno-Marí R, Soltész Z, Kemenesi G. Aedes koreicus, a vector on the rise: Pan-European genetic patterns, mitochondrial and draft genome sequencing. PLoS One 2022; 17:e0269880. [PMID: 35913994 PMCID: PMC9342712 DOI: 10.1371/journal.pone.0269880] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Accepted: 05/27/2022] [Indexed: 11/19/2022] Open
Abstract
Background
The mosquito Aedes koreicus (Edwards, 1917) is a recent invader on the European continent that was introduced to several new places since its first detection in 2008. Compared to other exotic Aedes mosquitoes with public health significance that invaded Europe during the last decades, this species’ biology, behavior, and dispersal patterns were poorly investigated to date.
Methodology/Principal findings
To understand the species’ population relationships and dispersal patterns within Europe, a fragment of the cytochrome oxidase I (COI or COX1) gene was sequenced from 130 mosquitoes, collected from five countries where the species has been introduced and/or established. Oxford Nanopore and Illumina sequencing techniques were combined to generate the first complete nuclear and mitochondrial genomic sequences of Ae. koreicus from the European region. The complete genome of Ae. koreicus is 879 Mb. COI haplotype analyses identified five major groups (altogether 31 different haplotypes) and revealed a large-scale dispersal pattern between European Ae. koreicus populations. Continuous admixture of populations from Belgium, Italy, and Hungary was highlighted, additionally, haplotype diversity and clustering indicate a separation of German sequences from other populations, pointing to an independent introduction of Ae. koreicus to Europe. Finally, a genetic expansion signal was identified, suggesting the species might be present in more locations than currently detected.
Conclusions/Significance
Our results highlight the importance of genetic research of invasive mosquitoes to understand general dispersal patterns, reveal main dispersal routes and form the baseline of future mitigation actions. The first complete genomic sequence also provides a significant leap in the general understanding of this species, opening the possibility for future genome-related studies, such as the detection of ‘Single Nucleotide Polymorphism’ markers. Considering its public health importance, it is crucial to further investigate the species’ population genetic dynamic, including a larger sampling and additional genomic markers.
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Affiliation(s)
- Kornélia Kurucz
- Institute of Biology, Faculty of Sciences, University of Pécs, Pécs, Hungary
- National Laboratory of Virology, Szentágothai Research Centre, University of Pécs, Pécs, Hungary
- * E-mail:
| | - Safia Zeghbib
- Institute of Biology, Faculty of Sciences, University of Pécs, Pécs, Hungary
- National Laboratory of Virology, Szentágothai Research Centre, University of Pécs, Pécs, Hungary
| | - Daniele Arnoldi
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all’Adige, Trento, Italy
| | - Giovanni Marini
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all’Adige, Trento, Italy
| | - Mattia Manica
- Center for Health Emergencies, Bruno Kessler Foundation, Trento, Italy
| | - Alice Michelutti
- Laboratory of Parasitology, Micology and Medical Entomology, Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro, Padova, Italy
| | - Fabrizio Montarsi
- Laboratory of Parasitology, Micology and Medical Entomology, Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro, Padova, Italy
| | - Isra Deblauwe
- Entomology Unit, Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
| | - Wim Van Bortel
- Entomology Unit, Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium
- Outbreak Research team, Institute of Tropical Medicine, Antwerp, Belgium
| | - Nathalie Smitz
- Department of Biology, Royal Museum for Central Africa (BopCo), Tervuren, Belgium
| | - Wolf Peter Pfitzner
- Kommunale Aktionsgemeinschaft zur Bekämpfung der Schnakenplage e.V. (KABS e.V.), Speyer, Germany
| | - Christina Czajka
- Kommunale Aktionsgemeinschaft zur Bekämpfung der Schnakenplage e.V. (KABS e.V.), Speyer, Germany
| | - Artur Jöst
- Kommunale Aktionsgemeinschaft zur Bekämpfung der Schnakenplage e.V. (KABS e.V.), Speyer, Germany
| | - Katja Kalan
- Department of Biodiversity, University of Primorska, Faculty of Mathematics, Natural Sciences and Information Technologies, Koper, Slovenia
| | - Jana Šušnjar
- Department of Biodiversity, University of Primorska, Faculty of Mathematics, Natural Sciences and Information Technologies, Koper, Slovenia
| | - Vladimir Ivović
- Department of Biodiversity, University of Primorska, Faculty of Mathematics, Natural Sciences and Information Technologies, Koper, Slovenia
| | - Anett Kuczmog
- Institute of Biology, Faculty of Sciences, University of Pécs, Pécs, Hungary
- National Laboratory of Virology, Szentágothai Research Centre, University of Pécs, Pécs, Hungary
| | - Zsófia Lanszki
- Institute of Biology, Faculty of Sciences, University of Pécs, Pécs, Hungary
- National Laboratory of Virology, Szentágothai Research Centre, University of Pécs, Pécs, Hungary
| | - Gábor Endre Tóth
- Institute of Biology, Faculty of Sciences, University of Pécs, Pécs, Hungary
- National Laboratory of Virology, Szentágothai Research Centre, University of Pécs, Pécs, Hungary
| | - Balázs A. Somogyi
- Institute of Biology, Faculty of Sciences, University of Pécs, Pécs, Hungary
- National Laboratory of Virology, Szentágothai Research Centre, University of Pécs, Pécs, Hungary
| | - Róbert Herczeg
- Bioinformatics Research Group, Genomics and Bioinformatics Core Facility, Szentágothai Research Centre, University of Pécs, Pécs, Hungary
| | - Péter Urbán
- Bioinformatics Research Group, Genomics and Bioinformatics Core Facility, Szentágothai Research Centre, University of Pécs, Pécs, Hungary
| | - Rubén Bueno-Marí
- Department of Research and Development, Laboratorios Lokímica, Paterna, Valencia, Spain
- Parasite & Health Research Group, Department of Pharmacy, Pharmaceutical Technology and Parasitology, Faculty of Pharmacy, University of Valencia, Burjassot, Valencia, Spain
| | - Zoltán Soltész
- Centre for Ecological Research, Eötvös Lóránd Research Network, Vácrátót, Hungary
| | - Gábor Kemenesi
- Institute of Biology, Faculty of Sciences, University of Pécs, Pécs, Hungary
- National Laboratory of Virology, Szentágothai Research Centre, University of Pécs, Pécs, Hungary
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13
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Arnoldi I, Negri A, Soresinetti L, Brambilla M, Carraretto D, Montarsi F, Roberto P, Mosca A, Rubolini D, Bandi C, Epis S, Gabrieli P. Assessing the distribution of invasive Asian mosquitoes in Northern Italy and modelling the potential spread of Aedes koreicus in Europe. Acta Trop 2022; 232:106536. [PMID: 35609630 DOI: 10.1016/j.actatropica.2022.106536] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 05/19/2022] [Accepted: 05/20/2022] [Indexed: 11/28/2022]
Abstract
In the last decade, Aedes koreicus and Aedes japonicus japonicus mosquitoes, which are competent vectors for various arboviruses of public health relevance, colonised Italy and other European countries. Nevertheless, information about their current and potential distribution is partial. Accordingly, in this study four regions of Northern Italy (Lombardy, Liguria, Piedmont and Aosta Valley) were surveyed during 2021 for the presence of eggs, larvae and pupae of these two invasive species. We found evidence for a widespread presence of Ae. koreicus in pre-Alpine territories of Lombardy and Piedmont. Larvae from the invasive subspecies of Ae. j. japonicus were also collected in the same geographic areas, though they were less frequent. Occurrence data from this study and results from previous monitoring campaigns were used to generate a Maxent model for the prediction of habitat suitability for Ae. koreicus mosquitoes in Northern Italy and the rest of Europe. Peri-urban areas located in proximity to forests, pastures and vineyards were revealed as highly suitable environments for colonisation by this invasive species. Maps of the potential distribution also suggest the presence of further suitable areas in currently uncolonized countries. We conclude that this invasive mosquito species has the potential for a broad expansion at the European level in the coming decades.
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Affiliation(s)
- Irene Arnoldi
- Department of Biosciences and Pediatric Clinical Research Center "Romeo ed Enrica Invernizzi", University of Milan, Milan 20133, Italy; Italian Malaria Network, Inter University Center for Malaria Research, University of Milan, Milan 20133, Italy; Department of Biology and Biotechnology, University of Pavia, Pavia 27100, Italy; University School of Advanced Studies Pavia, IUSS, Pavia 27100, Italy
| | - Agata Negri
- Department of Biosciences and Pediatric Clinical Research Center "Romeo ed Enrica Invernizzi", University of Milan, Milan 20133, Italy; Italian Malaria Network, Inter University Center for Malaria Research, University of Milan, Milan 20133, Italy
| | - Laura Soresinetti
- Department of Biosciences and Pediatric Clinical Research Center "Romeo ed Enrica Invernizzi", University of Milan, Milan 20133, Italy; Department of Biology and Biotechnology, University of Pavia, Pavia 27100, Italy
| | - Mattia Brambilla
- Department of Environmental Science and Policy, University of Milan, Milan 20133, Italy
| | - Davide Carraretto
- Department of Biology and Biotechnology, University of Pavia, Pavia 27100, Italy; University School of Advanced Studies Pavia, IUSS, Pavia 27100, Italy
| | - Fabrizio Montarsi
- Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro 35020, Italy
| | - Paolo Roberto
- Istituto per le Piante da Legno e l'Ambiente, I.P.L.A. S.p.A., Turin 10132, Italy
| | - Andrea Mosca
- Istituto per le Piante da Legno e l'Ambiente, I.P.L.A. S.p.A., Turin 10132, Italy
| | - Diego Rubolini
- Department of Environmental Science and Policy, University of Milan, Milan 20133, Italy
| | - Claudio Bandi
- Department of Biosciences and Pediatric Clinical Research Center "Romeo ed Enrica Invernizzi", University of Milan, Milan 20133, Italy; Italian Malaria Network, Inter University Center for Malaria Research, University of Milan, Milan 20133, Italy
| | - Sara Epis
- Department of Biosciences and Pediatric Clinical Research Center "Romeo ed Enrica Invernizzi", University of Milan, Milan 20133, Italy; Italian Malaria Network, Inter University Center for Malaria Research, University of Milan, Milan 20133, Italy.
| | - Paolo Gabrieli
- Department of Biosciences and Pediatric Clinical Research Center "Romeo ed Enrica Invernizzi", University of Milan, Milan 20133, Italy; Italian Malaria Network, Inter University Center for Malaria Research, University of Milan, Milan 20133, Italy.
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14
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Ganassi S, De Cristofaro A, Di Criscio D, Petrarca S, Leopardi C, Guarnieri A, Pietrangelo L, Venditti N, Di Marco R, Petronio Petronio G. The new invasive mosquito species Aedes koreicus as vector-borne diseases in the European area, a focus on Italian region: What we know from the scientific literature. Front Microbiol 2022; 13:931994. [PMID: 35958131 PMCID: PMC9358684 DOI: 10.3389/fmicb.2022.931994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 06/29/2022] [Indexed: 11/13/2022] Open
Abstract
The increased mobility of goods, people, and animals worldwide has caused the spread of several arthropod vectors, leading to an increased risk of animal and human infections. Aedes koreicus is a common species in South Korea, China, Japan, and Russia. Due to its cold-resistant dormant eggs, the adults last from the late summer until the autumn seasons. For these reasons, it seems to be better adapted to colder temperatures, favoring its colonization of hilly and pre-alpine areas. Its first appearance in Europe was in 2008 in Belgium, where it is currently established. The species was subsequently detected in Italy in 2011, European Russia, Germany, the Swiss–Italian border region, Hungary, Slovenia, Crimea, Austria, the Republic of Kazakhstan, and the Netherlands. The role of A. koreicus in the transmission of vector-borne pathogens remains unclear. The available scientific evidence is very old, often not available in English or not indexed in international databases, and therefore difficult to find. According to the literature reviewed, A. koreicus can be considered a new invasive mosquito species in Europe, establishing populations on the European continent. In addition, experimental evidence demonstrated its vector competence for both Dirofilaria immitis and Chikungunya and is relatively low for ZIKA but not for Western Nile Virus. On the other hand, even if the field evidence does not confirm the experimental findings, it is currently not possible to exclude with absolute certainty the potential involvement of this species in the spread, emergence, or re-emergence of these vector-borne disease agents.
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Affiliation(s)
- Sonia Ganassi
- Department of Agricultural, Environmental and Food Sciences (DiAAA), Università degli Studi del Molise, Campobasso, Italy
| | - Antonio De Cristofaro
- Department of Agricultural, Environmental and Food Sciences (DiAAA), Università degli Studi del Molise, Campobasso, Italy
| | - Dalila Di Criscio
- Department of Agricultural, Environmental and Food Sciences (DiAAA), Università degli Studi del Molise, Campobasso, Italy
| | - Sonia Petrarca
- Department of Agricultural, Environmental and Food Sciences (DiAAA), Università degli Studi del Molise, Campobasso, Italy
| | - Chiara Leopardi
- Department of Medicine and Health Science (DiMeS), Università degli Studi del Molise, Campobasso, Italy
| | - Antonio Guarnieri
- Department of Medicine and Health Science (DiMeS), Università degli Studi del Molise, Campobasso, Italy
| | - Laura Pietrangelo
- Department of Medicine and Health Science (DiMeS), Università degli Studi del Molise, Campobasso, Italy
| | - Noemi Venditti
- Department of Medicine and Health Science (DiMeS), Università degli Studi del Molise, Campobasso, Italy
| | - Roberto Di Marco
- Department of Medicine and Health Science (DiMeS), Università degli Studi del Molise, Campobasso, Italy
- *Correspondence: Roberto Di Marco
| | - Giulio Petronio Petronio
- Department of Medicine and Health Science (DiMeS), Università degli Studi del Molise, Campobasso, Italy
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15
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Miranda MÁ, Barceló C, Arnoldi D, Augsten X, Bakran-Lebl K, Balatsos G, Bengoa M, Bindler P, Boršová K, Bourquia M, Bravo-Barriga D, Čabanová V, Caputo B, Christou M, Delacour S, Eritja R, Fassi-Fihri O, Ferraguti M, Flacio E, Frontera E, Fuehrer HP, García-Pérez AL, Georgiades P, Gewehr S, Goiri F, González MA, Gschwind M, Gutiérrez-López R, Horváth C, Ibáñez-Justicia A, Jani V, Kadriaj P, Kalan K, Kavran M, Klobucar A, Kurucz K, Lucientes J, Lühken R, Magallanes S, Marini G, Martinou AF, Michelutti A, Mihalca AD, Montalvo T, Montarsi F, Mourelatos S, Muja-Bajraktari N, Müller P, Notarides G, Osório HC, Oteo JA, Oter K, Pajović I, Palmer JRB, Petrinic S, Răileanu C, Ries C, Rogozi E, Ruiz-Arrondo I, Sanpera-Calbet I, Sekulić N, Sevim K, Sherifi K, Silaghi C, Silva M, Sokolovska N, Soltész Z, Sulesco T, Šušnjar J, Teekema S, Valsecchi A, Vasquez MI, Velo E, Michaelakis A, Wint W, Petrić D, Schaffner F, della Torre A. AIMSurv: First pan-European harmonized surveillance of Aedes invasive mosquito species of relevance for human vector-borne diseases. GIGABYTE 2022; 2022:gigabyte57. [PMID: 36824512 PMCID: PMC9930523 DOI: 10.46471/gigabyte.57] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 05/19/2022] [Indexed: 11/09/2022] Open
Abstract
Human and animal vector-borne diseases, particularly mosquito-borne diseases, are emerging or re-emerging worldwide. Six Aedes invasive mosquito (AIM) species were introduced to Europe since the 1970s: Aedes aegypti, Ae. albopictus, Ae. japonicus, Ae. koreicus, Ae. atropalpus and Ae. triseriatus. Here, we report the results of AIMSurv2020, the first pan-European surveillance effort for AIMs. Implemented by 42 volunteer teams from 24 countries. And presented in the form of a dataset named "AIMSurv Aedes Invasive Mosquito species harmonized surveillance in Europe. AIM-COST Action. Project ID: CA17108". AIMSurv2020 harmonizes field surveillance methodologies for sampling different AIMs life stages, frequency and minimum length of sampling period, and data reporting. Data include minimum requirements for sample types and recommended requirements for those teams with more resources. Data are published as a Darwin Core archive in the Global Biodiversity Information Facility- Spain, comprising a core file with 19,130 records (EventID) and an occurrences file with 19,743 records (OccurrenceID). AIM species recorded in AIMSurv2020 were Ae. albopictus, Ae. japonicus and Ae. koreicus, as well as native mosquito species.
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Affiliation(s)
- Miguel Ángel Miranda
- Applied Zoology and Animal Conservation Group, University of the Balearic Islands (UIB), Ctra Valldemossa km 7.5, 07122 Palma, Spain
| | - Carlos Barceló
- Applied Zoology and Animal Conservation Group, University of the Balearic Islands (UIB), Ctra Valldemossa km 7.5, 07122 Palma, Spain
| | - Daniele Arnoldi
- Research and Innovation Centre, Fondazione Edmund Mach, Via Edmund Mach 1, 38098 San Michele all’Adige (TN), Italy
| | - Xenia Augsten
- Kommunale Aktionsgemeinschaft zur Bekämpfung der Schnakenplage (KABS) e.V. Georg-Peter-Süß-Str. 3, 67346 Speyer, Germany
| | - Karin Bakran-Lebl
- Austrian Agency for Health and Food Safety (AGES), Division for Public Health, Währinger Strasse 25a, 1090 Vienna, Austria
| | - George Balatsos
- Laboratory of Insects & Parasites of Medical Importance, Benaki Phytopathological Institute, St. Delta 8, Kifisia 14561, Athens, Greece
| | - Mikel Bengoa
- Anticimex Spain, Carrer Jesús Serra Santamans 5 Planta 3, 08174 Sant Cugat del Vallès, Barcelona, Spain
| | - Philippe Bindler
- Brigade Verte du Haut-Rhin, Service démoustication, 92 rue Mal. de Lattre de Tassigny, 68360 Soultz, France
| | - Kristina Boršová
- Institute of Virology, Biomedical Research Center of Slovak Academy of Sciences, Dubravska cesta 9, 845 05 Bratislava, Slovakia
| | - Maria Bourquia
- Agronomic and Veterinary Institute Hassan II, BP 6202, Rabat-Instituts 10100, Rabat, Morocco
| | - Daniel Bravo-Barriga
- Department of Animal Health, Veterinary Faculty, University of Extremadura, Av. de la Universidad, s/n, 10003 Cáceres, Spain
| | - Viktória Čabanová
- Institute of Virology, Biomedical Research Center of Slovak Academy of Sciences, Dubravska cesta 9, 845 05 Bratislava, Slovakia
| | - Beniamino Caputo
- Dep. Public Health and Infectious Diseases, University Sapienza, Piazzale Aldo Moro 5, 00185 Roma, Italy
| | - Maria Christou
- Environmental Predictions Department, Climate and Atmosphere Research Centre, The Cyprus Institute, 20 Konstantinou Kavafi Street, 2121 Nicosia, Cyprus
| | - Sarah Delacour
- Animal Health Department, Faculty of Veterinary Medicine of Zaragoza, University of Zaragoza, C/Miguel Servet 177, 50013 Zaragoza, Spain
| | - Roger Eritja
- Consell Comarcal del Baix Llobregat, 08980 Sant Feliu de Llobregat, Barcelona, Spain
| | | | - Martina Ferraguti
- Department of Biology, Faculty of Sciences, University of Extremadura Av. de Elvas, s/n, 06006 Badajoz, Spain
| | - Eleonora Flacio
- University of Applied Sciences and Arts of Southern Switzerland, Institute of Microbiology, Vector Ecology Unit, Via Flora Ruchat-Roncati 15, 6850 Mendrisio, Switzerland
| | - Eva Frontera
- Department of Animal Health, Veterinary Faculty, University of Extremadura, Av. de la Universidad, s/n, 10003 Cáceres, Spain
| | | | - Ana L. García-Pérez
- NEIKER-Basque Institute for Agricultural Research and Development, Berreaga 1, 48160 Derio, Bizkaia, Spain
| | - Pantelis Georgiades
- Environmental Predictions Department, Climate and Atmosphere Research Centre, The Cyprus Institute, 20 Konstantinou Kavafi Street, 2121 Nicosia, Cyprus
| | - Sandra Gewehr
- Ecodevelopment S.A., PO Box 2420, Thesi Mezaria, 57010 Filyro, Greece
| | - Fátima Goiri
- NEIKER-Basque Institute for Agricultural Research and Development, Berreaga 1, 48160 Derio, Bizkaia, Spain
| | | | - Martin Gschwind
- Swiss Tropical and Public Health Institute (Swiss TPH), Kreuzstrasse 2, CH-4123 Allschwil, Switzerland
- Universität Basel, Petersplatz 1, P.O. Box CH-4001 Basel, Switzerland
| | - Rafael Gutiérrez-López
- Applied Zoology and Animal Conservation Group, University of the Balearic Islands (UIB), Ctra Valldemossa km 7.5, 07122 Palma, Spain
| | - Cintia Horváth
- Department of Parasitology and Parasitic Diseases, University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, Romania
| | - Adolfo Ibáñez-Justicia
- Centre for Monitoring of Vectors, National Reference Centre, Netherlands Food and Consumer Product Safety Authority, Geertjesweg 15, 6706 EA Wageningen, The Netherlands
| | - Viola Jani
- Vectors’ Control Unit, Epidemiology and Control of Infectious Diseases Department, Institute of Public Health, Rruga Aleksander Moisiu 80, Tirana, Albania
| | - Përparim Kadriaj
- Vectors’ Control Unit, Epidemiology and Control of Infectious Diseases Department, Institute of Public Health, Rruga Aleksander Moisiu 80, Tirana, Albania
| | - Katja Kalan
- Faculty of Mathematics, Natural Sciences and Information Technologies, University of Primorska, Glagoljaška ulica 8, 6000 Koper, Slovenia
| | - Mihaela Kavran
- University of Novi Sad, Faculty of Agriculture, Laboratory for Medical and Veterinary Entomology, Trg Dositeja Obradovića 8, 21 000 Novi Sad, Serbia
| | - Ana Klobucar
- Andrija Stampar Teaching Institute of Public Health, Mirogojska c. 16, 10000 Zagreb, Croatia
| | | | - Javier Lucientes
- Animal Health Department, Faculty of Veterinary Medicine of Zaragoza, University of Zaragoza, C/Miguel Servet 177, 50013 Zaragoza, Spain
| | - Renke Lühken
- Bernhard Nocht Institute of Tropical Medicine, Department of Arbovirology, Hamburg, Bernhard-Nocht-Straße 74, 20359 Hamburg, Germany
| | - Sergio Magallanes
- Department of Biology, Faculty of Sciences, University of Extremadura Av. de Elvas, s/n, 06006 Badajoz, Spain
| | - Giovanni Marini
- Research and Innovation Centre, Fondazione Edmund Mach, Via Edmund Mach 1, 38098 San Michele all’Adige (TN), Italy
| | | | - Alice Michelutti
- Istituto Zooprofilattico Sperimentale delle Venezie, Viale dell’Università 10, 35020 Legnaro (Padua), Italy
| | - Andrei Daniel Mihalca
- Department of Parasitology and Parasitic Diseases, University of Agricultural Sciences and Veterinary Medicine of Cluj-Napoca, Romania
| | - Tomás Montalvo
- Agencia de Salud Pública de Barcelona, Plaça Lesseps 8 entresol, 08023 Barcelona, Spain
| | - Fabrizio Montarsi
- Istituto Zooprofilattico Sperimentale delle Venezie, Viale dell’Università 10, 35020 Legnaro (Padua), Italy
| | - Spiros Mourelatos
- Ecodevelopment S.A., PO Box 2420, Thesi Mezaria, 57010 Filyro, Greece
| | - Nesade Muja-Bajraktari
- Departament of Biology, Faculty of Mathematic and Natural Sciences, University of Prishtina, Str. Eqrem Qabej 9, Pristina, Republic of Kosovo
| | - Pie Müller
- Swiss Tropical and Public Health Institute (Swiss TPH), Kreuzstrasse 2, CH-4123 Allschwil, Switzerland
- Universität Basel, Petersplatz 1, P.O. Box CH-4001 Basel, Switzerland
| | - Gregoris Notarides
- Cyprus University of Technology, Limassol, Archiepiskopou Kyprianou 30, Limassol 3036, Cyprus
| | - Hugo Costa Osório
- National Institute of Health/ Centre for Vectors and Infectious Diseases Research, Avenida Padre Cruz, 1649-016 Lisboa, Portugal
| | - José A. Oteo
- Center for Rickettsiosis and Arthropod-Borne Diseases, Hospital Universitario San Pedro-CIBIR, C/Piqueras 98, 26006 Logroño, La Rioja, Spain
| | - Kerem Oter
- Istanbul University - Cerrahpasa, Faculty of Veterinary Medicine, Department of Parasitology, Buyukcekmece Yerleskesi, Alkent 2000 Mah, Yigitturk Cad. 5/9/1, 34500 Buyukcekmece, Istanbul, Turkey
| | - Igor Pajović
- University of Montenegro. Biotechnical Faculty, Mihaila Lalića 15, 81000 Podgorica, Montenegro
| | - John R. B. Palmer
- Universitat Pompeu Fabra - Mosquito Alert, C/Ramon Trias Fargas, 25-27. 08005 Barcelona, Spain
| | - Suncica Petrinic
- Andrija Stampar Teaching Institute of Public Health, Mirogojska c. 16, 10000 Zagreb, Croatia
| | - Cristian Răileanu
- Friedrich-Loeffler-Institut, Suedufer 10, 17493 Greifswald Isle of Riems, Germany
| | - Christian Ries
- Luxembourg National Museum of Natural History, Rue Münster 25, L-2160, Luxembourg
| | - Elton Rogozi
- Vectors’ Control Unit, Epidemiology and Control of Infectious Diseases Department, Institute of Public Health, Rruga Aleksander Moisiu 80, Tirana, Albania
| | - Ignacio Ruiz-Arrondo
- Center for Rickettsiosis and Arthropod-Borne Diseases, Hospital Universitario San Pedro-CIBIR, C/Piqueras 98, 26006 Logroño, La Rioja, Spain
| | - Isis Sanpera-Calbet
- Universitat Pompeu Fabra - Mosquito Alert, C/Ramon Trias Fargas, 25-27. 08005 Barcelona, Spain
| | - Nebojša Sekulić
- Institute for Public Health of Montenegro, bb John Jackson Street, Podgorica, Montenegro
| | - Kivanc Sevim
- Hacettepe University, Faculty of Science, Department of Biology, Ecology Section, Ankara, Turkey
| | - Kurtesh Sherifi
- Department of Veterinary Medicine, Faculty of Agriculture and Veterinary, University Hasan Prishtina, M546+72H, Prishtinë, Republic of Kosovo
| | - Cornelia Silaghi
- Friedrich-Loeffler-Institut, Suedufer 10, 17493 Greifswald Isle of Riems, Germany
| | - Manuel Silva
- National Institute of Health/ Centre for Vectors and Infectious Diseases Research, Avenida Padre Cruz, 1649-016 Lisboa, Portugal
| | - Nikolina Sokolovska
- PHI Center for Public Health-Skopje, blv.3rd Macedonian brigade 18, Skopje, North Macedonia
| | - Zoltán Soltész
- Centre for Ecological Research, Eötvös Lóránd Research Network, Alkotmány út 2-4, 2163 Vácrátót, Hungary
| | - Tatiana Sulesco
- Institute of Zoology, Ministry of Education and Research st. Academiei 1, Chisinau MD-2028, Republic of Moldova
| | - Jana Šušnjar
- Faculty of Mathematics, Natural Sciences and Information Technologies, University of Primorska, Glagoljaška ulica 8, 6000 Koper, Slovenia
| | - Steffanie Teekema
- Centre for Monitoring of Vectors, National Reference Centre, Netherlands Food and Consumer Product Safety Authority, Geertjesweg 15, 6706 EA Wageningen, The Netherlands
| | - Andrea Valsecchi
- Agencia de Salud Pública de Barcelona, Plaça Lesseps 8 entresol, 08023 Barcelona, Spain
| | - Marlen Ines Vasquez
- Cyprus University of Technology, Limassol, Archiepiskopou Kyprianou 30, Limassol 3036, Cyprus
| | - Enkelejda Velo
- Institute of Public Health, Epidemiology and Control of Infectious Diseases Department, Vectors’ Control Unit, Rruga Aleksander Moisiu, No. 80, Tirana, Albania
| | - Antonios Michaelakis
- Laboratory of Insects & Parasites of Medical Importance, Benaki Phytopathological Institute, St. Delta 8, Kifisia 14561, Athens, Greece
| | - William Wint
- Environmental Research Group Oxford, c/o Department of Zoology, Mansfiled Road, Oxford, UK
| | - Dušan Petrić
- University of Novi Sad, Faculty of Agriculture, Laboratory for Medical and Veterinary Entomology, Trg Dositeja Obradovića 8, 21 000 Novi Sad, Serbia
| | - Francis Schaffner
- Francis Schaffner Consultancy, Lörracherstrasse 50, 4125 Riehen, Switzerland
| | - Alessandra della Torre
- Dep. Public Health and Infectious Diseases, University Sapienza, Piazzale Aldo Moro 5, 00185 Roma, Italy
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Teekema S, Stroo A, Uiterwijk M, van de Vossenberg B, Jacobs F, Ibáñez‑Justicia A. First finding of Aedes koreicus (Diptera: Culicidae) in the Netherlands. JOURNAL OF THE EUROPEAN MOSQUITO CONTROL ASSOCIATION 2022. [DOI: 10.52004/jemca2021.0005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Since 2010, the Centre for Monitoring of Vectors (CMV) of the Netherlands Food and Consumer Product Safety Authority (NVWA), has a surveillance programme in place to detect and control invasive mosquito species (IMS) at locations with increased risk of importation. At the premises of companies that import used tyres from risk areas, the CMV implements surveillance using adult mosquito traps. In case of an IMS finding at a used tyre company location, the monitoring is intensified here (weekly sampling, additional BG-Sentinel traps and larval sampling), as well as within a predefined area with a radius of 500 m from the limits of the used tyre company location. On September 6th, 2021, eight Aedes larvae were found in a sample taken from a water-containing bucket. These larvae were both morphologically and molecularly (Illumina sequencing) identified as Aedes koreicus. Additional sampling at this first finding site of Ae. koreicus in the Netherlands, which was followed by mosquito control using larvicides, did not lead to further findings of the species.
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Affiliation(s)
- S. Teekema
- Centre for Monitoring of Vectors (CMV), Netherlands Food and Consumer Product Safety Authority (NVWA), Geertjesweg 15, 6706 EA Wageningen, the Netherlands
| | - A. Stroo
- Centre for Monitoring of Vectors (CMV), Netherlands Food and Consumer Product Safety Authority (NVWA), Geertjesweg 15, 6706 EA Wageningen, the Netherlands
| | - M. Uiterwijk
- Centre for Monitoring of Vectors (CMV), Netherlands Food and Consumer Product Safety Authority (NVWA), Geertjesweg 15, 6706 EA Wageningen, the Netherlands
| | - B. van de Vossenberg
- National Plant Protection Organization (NPPO-NL), Netherlands Food and Consumer Product Safety Authority (NVWA), Geertjesweg 15, 6706 EA Wageningen, the Netherlands
| | - F. Jacobs
- Centre for Monitoring of Vectors (CMV), Netherlands Food and Consumer Product Safety Authority (NVWA), Geertjesweg 15, 6706 EA Wageningen, the Netherlands
| | - A. Ibáñez‑Justicia
- Centre for Monitoring of Vectors (CMV), Netherlands Food and Consumer Product Safety Authority (NVWA), Geertjesweg 15, 6706 EA Wageningen, the Netherlands
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Santos IA, Pereira AKDS, Guevara-Vega M, de Paiva REF, Sabino-Silva R, Bergamini FRG, Corbi PP, Jardim ACG. Repurposing potential of rimantadine hydrochloride and development of a promising platinum(II)-rimantadine metallodrug for the treatment of Chikungunya virus infection. Acta Trop 2022; 227:106300. [PMID: 34979144 DOI: 10.1016/j.actatropica.2021.106300] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 12/23/2021] [Accepted: 12/29/2021] [Indexed: 11/15/2022]
Abstract
Most of the patients infected with Chikungunya virus (CHIKV) develop chronic manifestations characterized by pain and deformity in joints, impacting their quality of life. The aminoadamantanes, in their turn, have been exploited due to their biological activities, with amantadine and memantine recently described with anti-CHIKV activities. Here we evaluated the antiviral activity of rimantadine hydrochloride (rtdH), a well-known antiviral agent against influenza A, its platinum complex (Pt-rtd), and the precursor cis-[PtCl2(dmso)2], against CHIKV infection in vitro. The rtdH demonstrated significant antiviral activity in all stages of CHIKV replication (29% in pre-treatment; 57% in early stages of infection; 60% in post-entry stages). The Pt-rtd complex protected the cells against infection in 92%, inhibited 100% of viral entry, mainly by a virucidal effect, and impaired 60% of post-entry stages. Alternatively, cis-[PtCl2(dmso)2] impaired viral entry in 100% and post-entry steps in 60%, but had no effect in protecting cells when administered prior to CHIKV infection. Collectively, the obtained data demonstrated that rtdH and Pt-rtd significantly interfered in the early stages of CHIKV life cycle, with the strongest effect observed to Pt-rtd complex, which reduced up to 100% of CHIKV infection. Moreover, molecular docking analysis and infrared spectroscopy data (ATR-FTIR) suggest an interaction of Pt-rtd with CHIKV glycoproteins, potentially related to the mechanism of inhibition of viral entry by Pt-rtd. Through a migration retardation assay, it was also shown that Pt-rtd and cis-[PtCl2(dmso)2] interacted with the dsRNA in 87% and 100%, respectively. The obtained results highlight the repurposing potential of rtdH as an anti-CHIKV drug, as well as the synthesis of promising platinum(II) metallodrugs with potential application for the treatment of CHIKV infections. Importance Chikungunya fever is a disease that can result in persistent symptoms due to the chronic infection process. Infected patients can develop physical disability, resulting and high costs to the health system and significant impacts on the quality of life of affected individuals. Additionally, there are no licensed vaccines or antivirals against the Chikungunya virus (CHIKV) and the virus is easily transmitted due to the abundance of viable vectors in epidemic regions. In this context, our study highlights the repurposing potential of the commercial drug rimantadine hydrochloride (rtdH) as an antiviral agent for the treatment of CHIKV infections. Moreover, our data demonstrated that a platinum(II)-rimantadine metallodrug (Pt-rtd) poses as a potent anti-CHIKV molecule with potential application for the treatment of Chikungunya fever. Altogether, rtdH and Pt-rtd significantly interfered in the early stages of CHIKV life cycle, reducing up to 100% of CHIKV infection in vitro.
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Affiliation(s)
- Igor Andrade Santos
- Laboratory of Virology, Institute of Biomedical Sciences, Federal University of Uberlândia, Uberlândia-MG 38405-302, Brazil
| | | | - Marco Guevara-Vega
- Innovation Center in Salivary Diagnostic and Nanotheranostics, Department of Physiology, Institute of Biomedical Sciences, Federal University of Uberlandia, Minas Gerais, Brazil
| | | | - Robinson Sabino-Silva
- Innovation Center in Salivary Diagnostic and Nanotheranostics, Department of Physiology, Institute of Biomedical Sciences, Federal University of Uberlandia, Minas Gerais, Brazil
| | - Fernando R G Bergamini
- Laboratory of Synthesis of Bioinspired Molecules, Institute of Chemistry, Federal University of Uberlândia, Uberlândia-MG 34000-902, Brazil.
| | - Pedro P Corbi
- Institute of Chemistry, University of Campinas-UNICAMP, Campinas-SP 13083-871, Brazil.
| | - Ana Carolina G Jardim
- Laboratory of Virology, Institute of Biomedical Sciences, Federal University of Uberlândia, Uberlândia-MG 38405-302, Brazil; Institute of Biosciences, Humanities and Exact Sciences (Ibilce), São Paulo State University (Unesp), Campus São José do Rio Preto, São José do Rio Preto, São Paulo, Brazil.
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Damiani C, Cappelli A, Comandatore F, Montarsi F, Serrao A, Michelutti A, Bertola M, Mancini MV, Ricci I, Bandi C, Favia G. Wolbachia in Aedes koreicus: Rare Detections and Possible Implications. INSECTS 2022; 13:insects13020216. [PMID: 35206789 PMCID: PMC8879236 DOI: 10.3390/insects13020216] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 02/11/2022] [Accepted: 02/18/2022] [Indexed: 12/04/2022]
Abstract
The emerging distribution of new alien mosquito species was recently described in Europe. In addition to the invasion of Aedes albopictus, several studies have focused on monitoring and controlling other invasive Aedes species, as Aedes koreicus and Aedes japonicus. Considering the increasing development of insecticide resistance in Aedes mosquitoes, new control strategies, including the use of bacterial host symbionts, are proposed. However, little is known about the bacterial communities associated with these species, thus the identification of possible candidates for Symbiotic Control is currently limited. The characterization of the natural microbiota of field-collected Ae. koreicus mosquitoes from North-East Italy through PCR screening, identified native infections of Wolbachia in this species that is also largely colonized by Asaia bacteria. Since Asaia and Wolbachia are proposed as novel tools for Symbiotic Control, our study supports their use for innovative control strategies against new invasive species. Although the presence of Asaia was previously characterized in Ae. koreicus, our study characterized this Wolbachia strain, also inferring its phylogenetic position. The co-presence of Wolbachia and Asaia may provide additional information about microbial competition in mosquito, and to select suitable phenotypes for the suppression of pathogen transmission and for the manipulation of host reproduction in Ae. koreicus.
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Affiliation(s)
- Claudia Damiani
- School of Biosciences and Veterinary Medicine, University of Camerino, CIRM Italian Malaria Network, Via Gentile III da Varano, 62032 Camerino, Italy; (C.D.); (A.C.); (A.S.); (I.R.)
- Biovecblok s.r.l., Via del Bastione 5, 62032 Camerino, Italy
| | - Alessia Cappelli
- School of Biosciences and Veterinary Medicine, University of Camerino, CIRM Italian Malaria Network, Via Gentile III da Varano, 62032 Camerino, Italy; (C.D.); (A.C.); (A.S.); (I.R.)
| | - Francesco Comandatore
- Romeo ed Enrica Invernizzi Pediatric Research Center, Department of Biomedical and Clinical Sciences Luigi Sacco, Università di Milano, Via Giovanni Battista Grassi 74, 20157 Milan, Italy; (F.C.); (C.B.)
| | - Fabrizio Montarsi
- Istituto Zooprofilattico Sperimentale delle Venezie, Viale dell’Università 10, Legnaro, 35020 Padova, Italy; (F.M.); (A.M.); (M.B.)
| | - Aurelio Serrao
- School of Biosciences and Veterinary Medicine, University of Camerino, CIRM Italian Malaria Network, Via Gentile III da Varano, 62032 Camerino, Italy; (C.D.); (A.C.); (A.S.); (I.R.)
- Biovecblok s.r.l., Via del Bastione 5, 62032 Camerino, Italy
| | - Alice Michelutti
- Istituto Zooprofilattico Sperimentale delle Venezie, Viale dell’Università 10, Legnaro, 35020 Padova, Italy; (F.M.); (A.M.); (M.B.)
| | - Michela Bertola
- Istituto Zooprofilattico Sperimentale delle Venezie, Viale dell’Università 10, Legnaro, 35020 Padova, Italy; (F.M.); (A.M.); (M.B.)
| | | | - Irene Ricci
- School of Biosciences and Veterinary Medicine, University of Camerino, CIRM Italian Malaria Network, Via Gentile III da Varano, 62032 Camerino, Italy; (C.D.); (A.C.); (A.S.); (I.R.)
| | - Claudio Bandi
- Romeo ed Enrica Invernizzi Pediatric Research Center, Department of Biomedical and Clinical Sciences Luigi Sacco, Università di Milano, Via Giovanni Battista Grassi 74, 20157 Milan, Italy; (F.C.); (C.B.)
| | - Guido Favia
- School of Biosciences and Veterinary Medicine, University of Camerino, CIRM Italian Malaria Network, Via Gentile III da Varano, 62032 Camerino, Italy; (C.D.); (A.C.); (A.S.); (I.R.)
- Correspondence: ; Tel.: +39-07-3740-3230
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Barzon L, Gobbi F, Capelli G, Montarsi F, Martini S, Riccetti S, Sinigaglia A, Pacenti M, Pavan G, Rassu M, Padovan MT, Manfrin V, Zanella F, Russo F, Foglia F, Lazzarini L. Autochthonous dengue outbreak in Italy 2020: clinical, virological and entomological findings. J Travel Med 2021; 28:6354471. [PMID: 34409443 PMCID: PMC8499737 DOI: 10.1093/jtm/taab130] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Revised: 08/08/2021] [Accepted: 08/09/2021] [Indexed: 12/02/2022]
Abstract
BACKGROUND In August 2020, in the context of COVID-19 pandemics, an autochthonous dengue outbreak was identified for the first time in Italy. METHODS Following the reporting of the index case of autochthonous dengue, epidemiological investigation, vector control and substances of human origin safety measures were immediately activated, according to the national arbovirus surveillance plan. Dengue cases were followed-up with weekly visits and laboratory tests until recovery and clearance of viral RNA from blood. RESULTS The primary dengue case was identified in a young woman, who developed fever after returning from Indonesia to northern Italy, on 27 July 2020. She spent the mandatory quarantine for COVID-19 at home with relatives, six of whom developed dengue within two weeks. Epidemiological investigation identified further five autochthonous dengue cases among people who lived or stayed near the residence of the primary case. The last case of the outbreak developed fever on 29 September 2020. Dengue cases had a mild febrile illness, except one with persistent asthenia and myalgia. DENV-1 RNA was detected in blood and/or urine in all autochthonous cases, up to 35 days after fever onset. All cases developed IgM and IgG antibodies which cross-reacted with West Nile virus (WNV) and other flaviviruses. Sequencing of the full viral genome from blood samples showed over 99% nucleotide identity with DENV-1 strains isolated in China in 2014-2015; phylogenetic analysis classified the virus within Genotype I. Entomological site inspection identified a high density of Aedes albopictus mosquitoes, which conceivably sustained local DENV-1 transmission. Aedes koreicus mosquitoes were also collected in the site. CONCLUSIONS Areas in Europe with high density of Aedes mosquitoes should be considered at risk for dengue transmission. The presence of endemic flaviviruses, such as WNV, might pose problems in the laboratory diagnosis.
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Affiliation(s)
- Luisa Barzon
- Veneto Region Arbovirosis Task Force, Dorsoduro, 3493 - Rio Nuovo - 30123 Venezia, Italy.,Department of Molecular Medicine, University of Padova, via A. Gabelli 63, 35121 Padova, Italy.,Microbiology and Virology Unit, Padova University Hospital, Via Giustiniani 2, 35128 Padova, Italy
| | - Federico Gobbi
- Veneto Region Arbovirosis Task Force, Dorsoduro, 3493 - Rio Nuovo - 30123 Venezia, Italy.,Department of Infectious/Tropical Diseases and Microbiology, IRCCS Sacro Cuore Don Calabria Hospital, Via Luigi Rizzardi 4, 37024, Negrar di Valpolicella, Verona, Italy
| | - Gioia Capelli
- Veneto Region Arbovirosis Task Force, Dorsoduro, 3493 - Rio Nuovo - 30123 Venezia, Italy.,Istituto Zooprofilattico Sperimentale delle Venezie, Viale dell'Università 10, 35020 Legnaro, Padova, Italy
| | - Fabrizio Montarsi
- Veneto Region Arbovirosis Task Force, Dorsoduro, 3493 - Rio Nuovo - 30123 Venezia, Italy.,Istituto Zooprofilattico Sperimentale delle Venezie, Viale dell'Università 10, 35020 Legnaro, Padova, Italy
| | - Simone Martini
- Veneto Region Arbovirosis Task Force, Dorsoduro, 3493 - Rio Nuovo - 30123 Venezia, Italy.,Entostudio s.r.l., Viale del Lavoro, 66, 35020 Ponte San Nicolò, Padova, Italy
| | - Silvia Riccetti
- Department of Molecular Medicine, University of Padova, via A. Gabelli 63, 35121 Padova, Italy
| | - Alessandro Sinigaglia
- Department of Molecular Medicine, University of Padova, via A. Gabelli 63, 35121 Padova, Italy
| | - Monia Pacenti
- Microbiology and Virology Unit, Padova University Hospital, Via Giustiniani 2, 35128 Padova, Italy
| | - Giacomina Pavan
- Department of Microbiology, St. Bortolo Hospital, Viale Ferdinando Rodolfi 37, 36100 Vicenza, Italy
| | - Mario Rassu
- Department of Microbiology, St. Bortolo Hospital, Viale Ferdinando Rodolfi 37, 36100 Vicenza, Italy
| | - Maria Teresa Padovan
- Department of Public Health, Azienda AULSS8 Berica, Viale Ferdinando Rodolfi 37, 36100 Vicenza, Italy
| | - Vinicio Manfrin
- Department of Infectious Diseases, St. Bortolo Hospital, Viale Ferdinando Rodolfi 37, 36100 Vicenza, Italy
| | - Francesca Zanella
- Veneto Region Arbovirosis Task Force, Dorsoduro, 3493 - Rio Nuovo - 30123 Venezia, Italy.,Direzione Prevenzione, Sicurezza Alimentare Veterinaria, Dorsoduro, 3493 - Rio Nuovo - 30123 Venice, Italy
| | - Francesca Russo
- Veneto Region Arbovirosis Task Force, Dorsoduro, 3493 - Rio Nuovo - 30123 Venezia, Italy.,Direzione Prevenzione, Sicurezza Alimentare Veterinaria, Dorsoduro, 3493 - Rio Nuovo - 30123 Venice, Italy
| | - Felice Foglia
- Department of Public Health, Azienda AULSS8 Berica, Viale Ferdinando Rodolfi 37, 36100 Vicenza, Italy
| | - Luca Lazzarini
- Department of Infectious Diseases, St. Bortolo Hospital, Viale Ferdinando Rodolfi 37, 36100 Vicenza, Italy
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Vector Competence of the Invasive Mosquito Species Aedes koreicus for Arboviruses and Interference with a Novel Insect Specific Virus. Viruses 2021; 13:v13122507. [PMID: 34960776 PMCID: PMC8704790 DOI: 10.3390/v13122507] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/10/2021] [Accepted: 12/11/2021] [Indexed: 12/01/2022] Open
Abstract
The global spread of invasive mosquito species increases arbovirus infections. In addition to the invasive species Aedes albopictus and Aedes japonicus, Aedes koreicus has spread within Central Europe. Extensive information on its vector competence is missing. Ae. koreicus from Germany were investigated for their vector competence for chikungunya virus (CHIKV), Zika virus (ZIKV) and West Nile virus (WNV). Experiments were performed under different climate conditions (27 ± 5 °C; 24 ± 5 °C) for fourteen days. Ae. koreicus had the potential to transmit CHIKV and ZIKV but not WNV. Transmission was exclusively observed at the higher temperature, and transmission efficiency was rather low, at 4.6% (CHIKV) or 4.7% (ZIKV). Using a whole virome analysis, a novel mosquito-associated virus, designated Wiesbaden virus (WBDV), was identified in Ae. koreicus. Linking the WBDV infection status of single specimens to their transmission capability for the arboviruses revealed no influence on ZIKV transmission. In contrast, a coinfection of WBDV and CHIKV likely has a boost effect on CHIKV transmission. Due to its current distribution, the risk of arbovirus transmission by Ae. koreicus in Europe is rather low but might gain importance, especially in regions with higher temperatures. The impact of WBDV on arbovirus transmission should be analyzed in more detail.
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Hohmeister N, Werner D, Kampen H. The invasive Korean bush mosquito Aedes koreicus (Diptera: Culicidae) in Germany as of 2020. Parasit Vectors 2021; 14:575. [PMID: 34772448 PMCID: PMC8588644 DOI: 10.1186/s13071-021-05077-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 10/19/2021] [Indexed: 11/22/2022] Open
Abstract
Background The Korean bush mosquito Aedes koreicus was recently reported to have established a population in western Germany (Wiesbaden) in 2016. The species is difficult to distinguish morphologically from its close relative, the invasive Japanese bush mosquito Ae. japonicus, which is already widely distributed in many parts of Germany, including the area colonised by Ae. koreicus. Genetic confirmation of morphologically identified “Ae. japonicus” collection material, however, had only been done exceptionally before the German Ae. koreicus population became known. Methods Dried archived “Ae. japonicus” specimens both from the municipality of Wiesbaden and from deliberately and randomly selected distribution sites all over Germany were re-examined morphologically and genetically for admixture by Ae. koreicus. Moreover, cemeteries in the greater Wiesbaden area were sampled in 2019 and 2020 to check for Ae. koreicus spread. Korean and Japanese bush mosquitoes submitted to the German citizen science mosquito monitoring scheme “Mueckenatlas” in 2019 and 2020 were also subjected to particularly thorough species identification. The ND4 DNA sequences generated in this study in the context of species identification were phylogenetically compared to respective GenBank entries of Ae. koreicus. As a by-product, several genetic markers were evaluated for their suitability to identify Ae. koreicus. Results Aedes koreicus specimens could be identified in mosquito collection material and submissions from Wiesbaden from 2015 onwards, suggesting establishment to have happened in the same year as Ae. japonicus establishment. Detections of Ae. koreicus from 2019 and 2020 in Wiesbaden indicate a negligible enlargement of the populated area as described for 2018. Two Ae. koreicus specimens were also submitted from the city of Munich, southern Germany, in 2019 but further specimens could not be identified during immediate local inspections. Comparison of ND4 sequences generated in this and other studies demonstrate a high degree of homology, suggesting that this DNA region is not informative enough for clarification of origins and relationships of Ae. koreicus populations. For genetic identification of Ae. koreicus, PCR primers used for classical CO1 barcoding were found to lead to mismatches and produce no or incorrect amplicons. Alternative CO1 primers or a validated ND4 marker should be used instead. Conclusions Aedes koreicus is probably introduced into Germany every now and then but rarely succeeds in becoming established. As with most European populations, the German population is characterised by a limited expansion tendency. Since Ae. koreicus is a potential vector, however, Asian bush mosquitoes found at new places should be examined quite carefully and known distribution areas of Ae. japonicus regularly checked for the presence of Ae. koreicus. Graphical Abstract ![]()
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Affiliation(s)
- Nicolas Hohmeister
- Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Insel Riems, Greifswald, Germany
| | - Doreen Werner
- Leibniz-Centre for Agricultural Landscape Research, Muencheberg, Germany
| | - Helge Kampen
- Friedrich-Loeffler-Institut, Federal Research Institute for Animal Health, Insel Riems, Greifswald, Germany.
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Negri A, Arnoldi I, Brilli M, Bandi C, Gabrieli P, Epis S. Evidence for the spread of the alien species Aedes koreicus in the Lombardy region, Italy. Parasit Vectors 2021; 14:534. [PMID: 34649599 PMCID: PMC8515701 DOI: 10.1186/s13071-021-05031-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 09/22/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Aedes koreicus is a mosquito species characterized by marked anthropophilic behavior, and a potential vector of nematodes and viruses. It is native to East Asia, but its presence has recently been reported in many regions of Europe. In Italy, these mosquitoes had been detected in the northeast since 2011 and are now spreading towards the southwest of the country. METHODS In 2020, during a surveillance program for invasive mosquito species in the district of Bergamo (Lombardy Region, Italy), about 6000 mosquito larvae were collected. Emerged adults were assigned to mosquito species according to morphological analyses, followed by amplification and sequencing of genetic markers (COI, ND4, ITS2 and D2). RESULTS According to the morphological and genetic data, about 50 individuals belonged to the species Ae. koreicus. CONCLUSION We report the presence of Ae. koreicus in the district of Bergamo, which confirms the spread of this species in the north of Italy and raises concerns about its possible role as a vector of diseases in the Alpine area.
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Affiliation(s)
- Agata Negri
- Department of Biosciences and Pediatric Clinical Research Center "Romeo Ed Enrica Invernizzi", University of Milan, 20133, Milan, Italy.,Italian Malaria Network, Inter University Center for Malaria Research, University of Milan, 20133, Milan, Italy
| | - Irene Arnoldi
- Department of Biology and Biotechnology, University of Pavia, 27100, Pavia, Italy.,University School of Advanced Studies Pavia, IUSS, 27100, Pavia, Italy.,Italian Malaria Network, Inter University Center for Malaria Research, University of Milan, 20133, Milan, Italy
| | - Matteo Brilli
- Department of Biosciences and Pediatric Clinical Research Center "Romeo Ed Enrica Invernizzi", University of Milan, 20133, Milan, Italy
| | - Claudio Bandi
- Department of Biosciences and Pediatric Clinical Research Center "Romeo Ed Enrica Invernizzi", University of Milan, 20133, Milan, Italy.,Italian Malaria Network, Inter University Center for Malaria Research, University of Milan, 20133, Milan, Italy
| | - Paolo Gabrieli
- Department of Biosciences and Pediatric Clinical Research Center "Romeo Ed Enrica Invernizzi", University of Milan, 20133, Milan, Italy. .,Italian Malaria Network, Inter University Center for Malaria Research, University of Milan, 20133, Milan, Italy.
| | - Sara Epis
- Department of Biosciences and Pediatric Clinical Research Center "Romeo Ed Enrica Invernizzi", University of Milan, 20133, Milan, Italy. .,Italian Malaria Network, Inter University Center for Malaria Research, University of Milan, 20133, Milan, Italy.
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23
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Bang WJ, Won MH, Cho ST, Ryu J, Choi KS. A multiplex PCR assay for six Aedini species, including Aedes albopictus. Parasit Vectors 2021; 14:380. [PMID: 34321059 PMCID: PMC8317425 DOI: 10.1186/s13071-021-04871-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 07/05/2021] [Indexed: 11/22/2022] Open
Abstract
Background Mosquitoes, as vectors of various human pathogens, are significant drivers of serious human illness. In particular, those species in the Aedini tribe, which typically transmit dengue virus, Chikungunya fever virus, and Zika virus, are increasing their range because of climate change and international commerce. In order to evaluate the risk of disease transmission, accurate mosquito species identification and monitoring are needed. The goal of this work was to develop a rapid and simple molecular diagnostic method for six morphologically similar Aedini species (Aedes flavopictus, Aedes albopictus, Ochlerotatus koreicus, Ochlerotatus japonicus, Ochlerotatus togoi and Ochlerotatus hatorii) in Korea. Methods A total of 109 samples were assayed in this study. The internal transcribed spacer 2 (ITS2) regions from all six species were amplified, sequenced and analyzed using Mega 6. Following the identification of regions that were consistently different in terms of sequence between all six species, multiplex primers were designed to amplify these regions to generate species-specific fragments distinguishable by their size. Results Uniquely sized fragments were generated in Ae. flavopictus (495 bp), Ae. albopictus (438 bp), Oc. koreicus (361 bp), Oc. togoi (283 bp), Oc. hatorii (220 bp) and Oc. japonicus (160 bp). Pairwise distance analysis showed that the difference was 35.0 ± 1.5% between Aedes spp. and Ochlerotatus spp., 17.4 ± 0.2% between Ae. albopictus and Ae. flavopictus and 11.1 ± 0.3% between Oc. koreicus and Oc. japonicus. Conclusions In this study, a multiplex PCR assay for six species of the Aedini tribe was developed. This assay is more accurate than morphological identification and will be useful for monitoring and controlling these vector mosquitoes. Graphical Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1186/s13071-021-04871-7.
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Affiliation(s)
- Woo Jun Bang
- School of Life Sciences, Kyungpook National University, Biology building 226, Daehak-ro 80, Daegu, Korea.,Research Institute for Dokdo and Ulleungdo Island, Kyungpook National University, Daegu, Korea
| | - Min Hyeok Won
- School of Life Sciences, Kyungpook National University, Biology building 226, Daehak-ro 80, Daegu, Korea.,Research Institute for Dokdo and Ulleungdo Island, Kyungpook National University, Daegu, Korea
| | - Seong Tae Cho
- School of Life Sciences, Kyungpook National University, Biology building 226, Daehak-ro 80, Daegu, Korea
| | - Jihun Ryu
- School of Life Sciences, Kyungpook National University, Biology building 226, Daehak-ro 80, Daegu, Korea.,Research Institute for Dokdo and Ulleungdo Island, Kyungpook National University, Daegu, Korea
| | - Kwang Shik Choi
- School of Life Sciences, Kyungpook National University, Biology building 226, Daehak-ro 80, Daegu, Korea. .,Research Institute for Dokdo and Ulleungdo Island, Kyungpook National University, Daegu, Korea. .,Research Institute for Phylogenomics and Evolution, Kyungpook National University, Daegu, Korea.
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24
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Andreeva YV, Khrabrova NV, Alekseeva SS, Abylkassymova GM, Simakova AV, Sibataev AK. First record of the invasive mosquito species Aedes koreicus (Diptera, Culicidae) in the Republic of Kazakhstan. ACTA ACUST UNITED AC 2021; 28:52. [PMID: 34142954 PMCID: PMC8212810 DOI: 10.1051/parasite/2021050] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 06/01/2021] [Indexed: 11/16/2022]
Abstract
The natural distribution range of Aedes koreicus is Korea, China, Japan, and the Russian Far East. Since 2008, this species has been recorded as an invasive species in some European countries (Belgium, European Russia, Germany, Hungary, Italy, Slovenia, and Switzerland). The invasive mosquito species Ae. koreicus is reported from the Republic of Kazakhstan for the first time. Its morphological identification was confirmed by molecular-genetic analyses of ND4 sequences using specific primers. Aedes koreicus larvae were found in an artificial water reservoir together with the larvae of Culiseta longiareolata and Culex pipiens s.l. Aedes koreicus successfully overwintered in Almaty at low winter temperatures in 2018–2019. This suggests that the Ae. koreicus acclimation capacity is greater than it has been considered until now. We assume that Ae. koreicus will spread over the west and south of the Republic of Kazakhstan and territories of Kyrgyzstan and Uzbekistan Republics bordering the Almaty region.
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Affiliation(s)
| | | | | | - Gulnar M Abylkassymova
- Institute of General Genetics and Cytology, Al-Farabi Street 75, 050060 Almaty, Kazakhstan
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25
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Fuehrer HP, Schoener E, Weiler S, Barogh BS, Zittra C, Walder G. Monitoring of alien mosquitoes in Western Austria (Tyrol, Austria, 2018). PLoS Negl Trop Dis 2020; 14:e0008433. [PMID: 32574163 PMCID: PMC7337398 DOI: 10.1371/journal.pntd.0008433] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 07/06/2020] [Accepted: 05/29/2020] [Indexed: 01/04/2023] Open
Abstract
Mosquitoes are of major importance to human and animal health due to their ability to transmit various pathogens. In Europe the role of mosquitoes in public health has increased with the introduction of alien Aedes mosquitoes such as the Asian tiger mosquito, Aedes albopictus; the Asian bush mosquito, Ae. japonicus; and Ae. koreicus. In Austria, Ae. japonicus has established populations in various regions of the country. Aedes albopictus is not known to overwinter in Austria, although isolated findings of eggs and adult female mosquitoes have been previously reported, especially in Tyrol. Aedes koreicus had not so far been found in Austria. Within the framework of an alien mosquito surveillance program in the Austrian province of Tyrol, ovitraps were set up weekly from May to October, 2018, at 67 sites– 17 in East Tyrol and 50 in North Tyrol. Sampling was performed at highways and at urban and rural areas. DNA obtained from mosquito eggs was barcoded using molecular techniques and sequences were analysed to species level. Eggs of alien Aedes species were found at 18 out of 67 sites (27%). Both Ae. albopictus and Ae. japonicus were documented at highways and urban areas in both East and North Tyrol. Aedes koreicus was found in East Tyrol. During this mosquito surveillance program, eggs of Ae. albopictus, Ae. japonicus, and Ae. koreicus were documented in the Austrian province of Tyrol. These findings not only show highways to be points of entry, but also point to possible establishment processes of Ae. japonicus in Tyrol. Moreover, Ae. koreicus was documented in Austria for the first time. The importance of mosquitoes for Public Health in Europe increased dramatically with the introduction of alien species considered to be competent vectors of important human pathogens (e.g. dengue, chikungunya, and Zika viruses), which autochthonous mosquitoes are not yet known to transmit. The Asian tiger mosquito (Aedes albopictus), the Asian bush mosquito (Aedes japonicus), and Aedes koreicus are particularly of relevance, as they are expanding their range in Europe. Tyrol, a region in the Alps with main transport routes from Italy to Germany is of high relevance for the spread of potential invasive, alien Aedes mosquitoes. In this study, we demonstrate highways to be points of entry, and point to possible establishment of the Asian tiger mosquito and the East Asian bush mosquito in Tyrol (findings at highways and urban areas). Moreover, we report the first findings of Ae. koreicus in Austria, this species having most probably spread from neighbouring populations in Italy.
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Affiliation(s)
- Hans-Peter Fuehrer
- Department of Pathobiology, Institute of Parasitology, University of Veterinary Medicine Vienna, Vienna, Austria
- * E-mail:
| | - Ellen Schoener
- Department of Pathobiology, Institute of Parasitology, University of Veterinary Medicine Vienna, Vienna, Austria
| | | | - Bita Shahi Barogh
- Department of Pathobiology, Institute of Parasitology, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Carina Zittra
- Department of Pathobiology, Institute of Parasitology, University of Veterinary Medicine Vienna, Vienna, Austria
- Department of Limnology and Bio-Oceanography, University of Vienna, Vienna, Austria
| | - Gernot Walder
- Dr. Gernot Walder GmbH, Austria
- Division of Hygiene and Medical Microbiology, Medical University of Innsbruck, Innsbruck, Austria
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26
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Kurucz K, Manica M, Delucchi L, Kemenesi G, Marini G. Dynamics and Distribution of the Invasive Mosquito Aedes koreicus in a Temperate European City. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17082728. [PMID: 32326530 PMCID: PMC7216222 DOI: 10.3390/ijerph17082728] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 04/03/2020] [Accepted: 04/13/2020] [Indexed: 12/03/2022]
Abstract
Aedes koreicus is a mosquito species native to Asia that has recently successfully invaded new areas in several European countries. Here, we provide important data on Ae. koreicus establishment in Pécs (Southern Hungary). Mosquito surveillance was carried out weekly between 2016 and 2019 at 10 different sites located throughout the city from May to September. We conducted a statistical analysis to evaluate the most important abiotic factors driving Ae. koreicus abundance. We then calibrated a previously developed temperature-dependent mathematical model to the recorded captures to evaluate mosquito abundance in the study area. We found that too high summer temperatures negatively affect mosquito abundance. The model accurately replicated the observed capture patterns, providing an estimate of Ae. koreicus density for each breeding season, which we interpolated to map Ae. koreicus abundance throughout Pécs. We found a negative correlation between mosquito captures and human density, suggesting that Ae. koreicus does not necessarily require humans for its blood meals. Our study provides a successful application of a previously published mathematical model to investigate Ae. koreicus population dynamics, proving its suitability for future studies, also within an epidemiological framework.
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Affiliation(s)
- Kornélia Kurucz
- Institute of Biology, Faculty of Sciences, University of Pécs, H-7624 Pécs, Hungary
| | - Mattia Manica
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, 38010 San Michele all’Adige, Italy
| | - Luca Delucchi
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, 38010 San Michele all’Adige, Italy
| | - Gábor Kemenesi
- Institute of Biology, Faculty of Sciences, University of Pécs, H-7624 Pécs, Hungary
| | - Giovanni Marini
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, 38010 San Michele all’Adige, Italy
- Correspondence:
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27
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Shin J, Jung J. First record of the complete mitochondrial genome of Aedes koreicus (Edwards, 1917) (Diptera: Culicidae) in South Korea. Mitochondrial DNA B Resour 2020. [DOI: 10.1080/23802359.2020.1756947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Affiliation(s)
- Jiyeong Shin
- The Division of EcoCreative, Ewha Womans University, Seoul, Korea
| | - Jongwoo Jung
- The Division of EcoCreative, Ewha Womans University, Seoul, Korea
- Department of Science Education, Ewha Womans University, Seoul, Korea
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28
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Alekseeva SS, Andreeva YV, Wasserlauf IE, Sibataev AK, Stegniy VN. Analysis of the Metaphase Chromosome Karyotypes in Imaginal Discs of Aedes communis, Ae. punctor, Ae. intrudens, and Ae. rossicus (Diptera: Culicidae) Mosquitoes. INSECTS 2020; 11:E63. [PMID: 31963900 PMCID: PMC7022244 DOI: 10.3390/insects11010063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 01/15/2020] [Accepted: 01/16/2020] [Indexed: 11/16/2022]
Abstract
In this study, cytogenetic analysis of the metaphase chromosomes from imaginal discs of Aedes (Diptera: Culicidae) mosquitoes-Aedes communis, Ae. punctor, Ae. intrudens, and Ae. rossicus-was performed. The patterns of C-banding and DAPI staining of the heteroсhromatin and the length of the chromosomes demonstrate species specificity. In particular, the Ae. punctor chromosomes are the shortest compared with Ae. communis, Ae. intrudens, and Ae. rossicus, and they also carry additional C and DAPI bands in intercalary regions. The Ae. intrudens chromosomes are the longest, they have pericentromeric C bands, and they almost lack any DAPI bands near the centromere of chromosome 3 versus Ae. communis, which has the largest pericentromeric DAPI blocks in all three chromosome pairs. Ae. rossicus also possesses DAPI bands in the centromeric regions of all chromosomes, but their staining is weaker compared with those of Ae. communis. Therefore, the analysis of karyotypes is a tool for species-level identification of these mosquitoes.
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Affiliation(s)
- Svetlana S. Alekseeva
- Laboratory of Evolution Cytogenetics, Tomsk State University, Lenin st, 36, Tomsk 634050, Russia; (Y.V.A.); (I.E.W.); (A.K.S.); (V.N.S.)
- Laboratory of Evolutionary Genomics of Insects, the Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Lavrentiev ave., 10, Novosibirsk 630090, Russia
| | - Yulia V. Andreeva
- Laboratory of Evolution Cytogenetics, Tomsk State University, Lenin st, 36, Tomsk 634050, Russia; (Y.V.A.); (I.E.W.); (A.K.S.); (V.N.S.)
| | - Irina E. Wasserlauf
- Laboratory of Evolution Cytogenetics, Tomsk State University, Lenin st, 36, Tomsk 634050, Russia; (Y.V.A.); (I.E.W.); (A.K.S.); (V.N.S.)
| | - Anuarbek K. Sibataev
- Laboratory of Evolution Cytogenetics, Tomsk State University, Lenin st, 36, Tomsk 634050, Russia; (Y.V.A.); (I.E.W.); (A.K.S.); (V.N.S.)
| | - Vladimir N. Stegniy
- Laboratory of Evolution Cytogenetics, Tomsk State University, Lenin st, 36, Tomsk 634050, Russia; (Y.V.A.); (I.E.W.); (A.K.S.); (V.N.S.)
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29
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Alfano N, Tagliapietra V, Rosso F, Manica M, Arnoldi D, Pindo M, Rizzoli A. Changes in Microbiota Across Developmental Stages of Aedes koreicus, an Invasive Mosquito Vector in Europe: Indications for Microbiota-Based Control Strategies. Front Microbiol 2019; 10:2832. [PMID: 31921019 PMCID: PMC6914824 DOI: 10.3389/fmicb.2019.02832] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 11/21/2019] [Indexed: 11/29/2022] Open
Abstract
Since it has been understood that gut microbiota of vector mosquitoes can influence their vector competence, efforts have been undertaken to develop new control strategies based on host microbiota manipulation, and aimed at suppressing the vector population or replacing it with a less competent one. For the proper design of such control strategies it is necessary to know the microbiota composition of the target vector species, how it is acquired, and how it changes throughout the host’s life cycle. In this study, 16S rRNA amplicon high-throughput sequencing was used to characterize the changes in microbiota from the aquatic environment (larval breeding sites) to the different developmental stages of field-collected Aedes koreicus in Italy, an emerging invasive mosquito species in Europe and a potential vector of several pathogens. The bacterial communities of the aquatic breeding sites, larvae, pupae and adults showed distinctive structures to one another. Indeed, 84% of community members were unique to a given sample type. Nevertheless, almost 40% of the sequences generated were assigned to bacteria detected in all sample types, suggesting the importance of bacteria transstadially transmitted from water to the adult stage in constituting mosquito microbiota. Among these, genus C39 largely constituted water microbiota, family Burkholderiaceae was the most abundant in larvae and pupae, and genus Asaia dominated adult communities. In addition, Asaia constituted a core microbiota across all sample types. Our results suggest that the microbiota of Ae. koreicus mosquitoes is composed by a community which derives from the aquatic bacteria of the larval breeding sites, is then filtered by the larval gut, where only certain members are able to persist, rearranged by metamorphosis and finally modified by the change in diet at the adult stage. Understanding how the microbiota of Ae. koreicus changes through the mosquito life cycle represents a first step in selecting bacterial candidates for use in microbiota-based intervention measures for this species. The properties which Asaia exhibits in this species, such as dominance, high prevalence and transstadial transmission, prevent the use of Wolbachia but make Asaia an ideal candidate for paratransgenesis.
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Affiliation(s)
- Niccolò Alfano
- Fondazione Edmund Mach, Research and Innovation Centre, Trento, Italy
| | | | - Fausta Rosso
- Fondazione Edmund Mach, Research and Innovation Centre, Trento, Italy
| | - Mattia Manica
- Fondazione Edmund Mach, Research and Innovation Centre, Trento, Italy
| | - Daniele Arnoldi
- Fondazione Edmund Mach, Research and Innovation Centre, Trento, Italy
| | - Massimo Pindo
- Fondazione Edmund Mach, Research and Innovation Centre, Trento, Italy
| | - Annapaola Rizzoli
- Fondazione Edmund Mach, Research and Innovation Centre, Trento, Italy
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30
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Pezzi L, Diallo M, Rosa-Freitas MG, Vega-Rua A, Ng LFP, Boyer S, Drexler JF, Vasilakis N, Lourenco-de-Oliveira R, Weaver SC, Kohl A, de Lamballerie X, Failloux AB. GloPID-R report on chikungunya, o'nyong-nyong and Mayaro virus, part 5: Entomological aspects. Antiviral Res 2019; 174:104670. [PMID: 31812638 DOI: 10.1016/j.antiviral.2019.104670] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 11/28/2019] [Indexed: 10/25/2022]
Abstract
The GloPID-R (Global Research Collaboration for Infectious Disease Preparedness) chikungunya (CHIKV), o'nyong-nyong (ONNV) and Mayaro virus (MAYV) Working Group has been established to investigate natural history, epidemiology and clinical aspects of infection by these viruses. Here, we present a report dedicated to entomological aspects of CHIKV, ONNV and MAYV. Recent global expansion of chikungunya virus has been possible because CHIKV established a transmission cycle in urban settings using anthropophilic vectors such as Aedes albopictus and Aedes aegypti. MAYV and ONNV have a more limited geographic distribution, being confined to Africa (ONNV) and central-southern America (MAYV). ONNV is probably maintained through an enzootic cycle that has not been characterized yet, with Anopheles species as main vectors and humans as amplification hosts during epidemics. MAYV is transmitted by Haemagogus species in an enzootic cycle using non-human primates as the main amplification and maintenance hosts, and humans becoming sporadically infected when venturing in or nearby forest habitats. Here, we focused on the transmission cycle and natural vectors that sustain circulation of these viruses in their respective locations. The knowledge of the natural ecology of transmission and the capacity of different vectors to transmit these viruses is crucial to understand CHIKV emergence, and to assess the risk that MAYV and ONNV will expand on wide scale using anthropophilic mosquito species not normally considered primary vectors. Finally, the experts identified knowledge gaps and provided adapted recommendations, in order to address future entomological investigations in the right direction.
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Affiliation(s)
- L Pezzi
- Unité des Virus Émergents (UVE: Aix-Marseille Univ-IRD 190-Inserm 1207-IHU Méditerranée Infection), Marseille, France; EA7310, Laboratoire de Virologie, Université de Corse-Inserm, Corte, France.
| | - M Diallo
- Unité d'Entomologie Médicale, Institut Pasteur de Dakar, Dakar, Senegal
| | - M G Rosa-Freitas
- Instituto Oswaldo Cruz-Fiocruz, Laboratório de Mosquitos Transmissores de Hematozoários, Rio de Janeiro, Brazil
| | - A Vega-Rua
- Laboratory of Vector Control Research, Environment and Health Unit, Institut Pasteur de la Guadeloupe, Guadeloupe
| | - L F P Ng
- Singapore Immunology Network, Agency for Science, Technology and Research (A*STAR), Singapore
| | - S Boyer
- Medical Entomology Platform, Institut Pasteur du Cambodge, Phnom Penh, Cambodia
| | - J F Drexler
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Institute of Virology, 10117, Berlin, Germany; German Centre for Infection Research (DZIF), Germany
| | - N Vasilakis
- Department of Pathology, Institute of Human Infection and Immunity, University of Texas Medical Branch, Galveston, USA
| | - R Lourenco-de-Oliveira
- Instituto Oswaldo Cruz-Fiocruz, Laboratório de Mosquitos Transmissores de Hematozoários, Rio de Janeiro, Brazil
| | - S C Weaver
- Institute for Human Infections and Immunity and Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, USA
| | - A Kohl
- MRC-University of Glasgow Centre for Virus Research, Glasgow, UK
| | - X de Lamballerie
- Unité des Virus Émergents (UVE: Aix-Marseille Univ-IRD 190-Inserm 1207-IHU Méditerranée Infection), Marseille, France
| | - A-B Failloux
- Department of Virology, Institut Pasteur, Arboviruses and Insect Vectors Unit, Paris, France
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31
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Nagy O, Nagy A, Tóth S, Pályi B, Vargáné Koroknai A, Takács M. Imported Zika virus infections in Hungary between 2016 and 2018. Acta Microbiol Immunol Hung 2019; 66:423-442. [PMID: 31658836 DOI: 10.1556/030.66.2019.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Zika virus is a mosquito-borne flavivirus with significant public health concern due to its association with neurological symptoms and intrauterine malformations. Although it is endemic in tropical and subtropical areas, sexual transmission raises the possibility of autochthonous spreading elsewhere. We describe the first laboratory diagnosed imported Zika-infections of Hungary, to highlight the challenges of microbiological identification of the pathogen, caused by serological cross-reactivity and short viremia. Serological examination was carried out using indirect immunofluorescent assay and enzyme-linked immunosorbent assay. Plaque-reduction neutralization test was used for verification purposes. A wide range of clinical specimens: serum, whole-blood, urine, saliva, and semen were analyzed by molecular methods, and sequencing was applied in case of PCR positive results to identify the virus strain. Zika-infected patients with previous vaccination against flaviviruses or possible flavivirus infection in the past showed high serological cross-reactivity, and even cross-neutralizing antibodies were observed. Zika virus RNA could be detected in urine specimen in case of two patients, and in EDTA-anticoagulated whole-blood sample of one patient. The detected strains belong to the Asian lineage of the virus. We presume that serological investigation of imported Zika virus could be altered by infections, vaccination of endemic flaviviruses in Hungary and vice versa.
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Affiliation(s)
- Orsolya Nagy
- 1 Department of Virology, National Public Health Center, Budapest, Hungary
- 2 Institute of Medical Microbiology, Semmelweis University, Budapest, Hungary
| | - Anna Nagy
- 1 Department of Virology, National Public Health Center, Budapest, Hungary
| | - Szilvia Tóth
- 3 Central Hospital of Southern Pest – National Institute of Hematology and Infectious Diseases, Budapest, Hungary
| | - Bernadett Pályi
- 1 Department of Virology, National Public Health Center, Budapest, Hungary
| | | | - Mária Takács
- 1 Department of Virology, National Public Health Center, Budapest, Hungary
- 2 Institute of Medical Microbiology, Semmelweis University, Budapest, Hungary
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32
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Martinet JP, Ferté H, Failloux AB, Schaffner F, Depaquit J. Mosquitoes of North-Western Europe as Potential Vectors of Arboviruses: A Review. Viruses 2019; 11:v11111059. [PMID: 31739553 PMCID: PMC6893686 DOI: 10.3390/v11111059] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 11/06/2019] [Accepted: 11/08/2019] [Indexed: 12/22/2022] Open
Abstract
Background: The intensification of trade and travel is linked to the growing number of imported cases of dengue, chikungunya or Zika viruses into continental Europe and to the expansion of invasive mosquito species such as Aedes albopictus and Aedes japonicus. Local outbreaks have already occurred in several European countries. Very little information exists on the vector competence of native mosquitoes for arboviruses. As such, the vectorial status of the nine mosquito species largely established in North-Western Europe (Aedes cinereus and Aedes geminus, Aedes cantans, Aedes punctor, Aedes rusticus, Anopheles claviger s.s., Anopheles plumbeus, Coquillettidia richiardii, Culex pipiens s.l., and Culiseta annulata) remains mostly unknown. Objectives: To review the vector competence of both invasive and native mosquito populations found in North-Western Europe (i.e., France, Belgium, Germany, United Kingdom, Ireland, The Netherlands, Luxembourg and Switzerland) for dengue, chikungunya, Zika, West Nile and Usutu viruses. Methods: A bibliographical search with research strings addressing mosquito vector competence for considered countries was performed. Results: Out of 6357 results, 119 references were related to the vector competence of mosquitoes in Western Europe. Eight species appear to be competent for at least one virus. Conclusions: Aedes albopictus is responsible for the current outbreaks. The spread of Aedes albopictus and Aedes japonicus increases the risk of the autochthonous transmission of these viruses. Although native species could contribute to their transmission, more studies are still needed to assess that risk.
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Affiliation(s)
- Jean-Philippe Martinet
- Faculté de Pharmacie, Université de Reims Champagne-Ardenne, ANSES, SFR Cap Santé, EA7510 ESCAPE–USC VECPAR, 51 rue Cognacq-Jay, 51096 Reims CEDEX, France; (H.F.); (J.D.)
- Arbovirus et Insectes Vecteurs, Département de Virologie, Institut Pasteur, 25-28 rue du docteur Roux, 75015 Paris, France;
- Correspondence:
| | - Hubert Ferté
- Faculté de Pharmacie, Université de Reims Champagne-Ardenne, ANSES, SFR Cap Santé, EA7510 ESCAPE–USC VECPAR, 51 rue Cognacq-Jay, 51096 Reims CEDEX, France; (H.F.); (J.D.)
- Laboratoire de Parasitologie, Hôpital Maison-Blanche, CHU de Reims, 45 rue Cognacq-Jay, 51100 Reims, France
| | - Anna-Bella Failloux
- Arbovirus et Insectes Vecteurs, Département de Virologie, Institut Pasteur, 25-28 rue du docteur Roux, 75015 Paris, France;
| | - Francis Schaffner
- National Centre for Vector Entomology, Institute of Parasitology, Vetsuisse Faculty, University of Zurich, Rämistrasse 71, 8006 Zürich, Switzerland;
- Francis Schaffner Consultancy, Lörracherstrasse 50, 4125 Riehen (Basel-Land), Switzerland
| | - Jérôme Depaquit
- Faculté de Pharmacie, Université de Reims Champagne-Ardenne, ANSES, SFR Cap Santé, EA7510 ESCAPE–USC VECPAR, 51 rue Cognacq-Jay, 51096 Reims CEDEX, France; (H.F.); (J.D.)
- Laboratoire de Parasitologie, Hôpital Maison-Blanche, CHU de Reims, 45 rue Cognacq-Jay, 51100 Reims, France
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Marini G, Arnoldi D, Baldacchino F, Capelli G, Guzzetta G, Merler S, Montarsi F, Rizzoli A, Rosà R. First report of the influence of temperature on the bionomics and population dynamics of Aedes koreicus, a new invasive alien species in Europe. Parasit Vectors 2019; 12:524. [PMID: 31694685 PMCID: PMC6833271 DOI: 10.1186/s13071-019-3772-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 10/25/2019] [Indexed: 01/27/2023] Open
Abstract
BACKGROUND Aedes koreicus was detected in northern Italy for the first time in 2011, and it is now well established in several areas as a new invasive mosquito species. Data regarding the influence of temperature on mosquito survival and development are not available yet for this species. METHODS We experimentally investigated the influence of different constant rearing temperatures (between 4 and 33 °C) on the survival rates and developmental times of different life stages of Ae. koreicus under laboratory conditions. The resulting data were subsequently used to inform a mathematical model reproducing the Ae. koreicus life-cycle calibrated to counts of adult females captured in the field in the autonomous province of Trento (northern Italy) between 2016 and 2018. RESULTS We found that temperatures above 28 °C are not optimal for the survival of pupae and adults, whereas temperate conditions of 23-28 °C seem to be very favorable, explaining the recent success of Ae. koreicus at establishing into new specific areas. Our results indicate that Ae. koreicus is less adapted to local climatic conditions compared to Ae. albopictus, another invasive species which has been invading the area for the last three decades. Warmer seasons, which are more likely to occur in the future because of climate change, might extend the breeding time and therefore increase the abundance of Ae. koreicus in the study region. CONCLUSIONS Our findings provide, to our knowledge, the first evidence on how temperature influences the bionomics and dynamics of Ae. koreicus and highlight the need for further studies on the phenology of this species in temperate areas of Europe.
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Affiliation(s)
- Giovanni Marini
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all’Adige, Trento, Italy
- Epilab-JRU, FEM-FBK Joint Research Unit, Province of Trento, Italy
| | - Daniele Arnoldi
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all’Adige, Trento, Italy
| | - Frederic Baldacchino
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all’Adige, Trento, Italy
- Direction départementale de la protection des population du Nord, Lille, France
| | - Gioia Capelli
- Laboratory of Parasitology, Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro, PD Italy
| | - Giorgio Guzzetta
- Epilab-JRU, FEM-FBK Joint Research Unit, Province of Trento, Italy
- Center for Information Technology, Bruno Kessler Foundation, Trento, Italy
| | - Stefano Merler
- Epilab-JRU, FEM-FBK Joint Research Unit, Province of Trento, Italy
- Center for Information Technology, Bruno Kessler Foundation, Trento, Italy
| | - Fabrizio Montarsi
- Laboratory of Parasitology, Istituto Zooprofilattico Sperimentale delle Venezie, Legnaro, PD Italy
| | - Annapaola Rizzoli
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all’Adige, Trento, Italy
| | - Roberto Rosà
- Department of Biodiversity and Molecular Ecology, Research and Innovation Centre, Fondazione Edmund Mach, San Michele all’Adige, Trento, Italy
- Epilab-JRU, FEM-FBK Joint Research Unit, Province of Trento, Italy
- Center Agriculture Food Environment, University of Trento, San Michele all’Adige, Trento Italy
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Ballardini M, Ferretti S, Chiaranz G, Pautasso A, Riina MV, Triglia G, Verna F, Bellavia V, Radaelli MC, Berio E, Accorsi A, De Camilli M, Cardellino U, Fiorino N, Acutis PL, Casalone C, Mignone W. First report of the invasive mosquito Aedes koreicus (Diptera: Culicidae) and of its establishment in Liguria, northwest Italy. Parasit Vectors 2019; 12:334. [PMID: 31277680 PMCID: PMC6610922 DOI: 10.1186/s13071-019-3589-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 06/27/2019] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Invasive mosquito species (IMS) of the genus Aedes are a cause of increasing concern in Europe owing to their ability to vector important human viral diseases. Entomological surveillance to early detect alien mosquito and flavivirus circulation in Liguria, northwest Italy, has been carried out since 2011. RESULTS The invasive species Aedes koreicus was first detected in Genoa in September 2015, when a male specimen was caught near the international airport; species identity was confirmed by genetic analysis. Over the next three years, 86 more adult specimens were trapped at sites throughout the city, accounting for 0.50% of all mosquitoes and 1.04% of Aedes sp. mosquitoes trapped in Genova in the four-year period 2015-2018. So far, no other monitored sites in Liguria have revealed the presence of this species. Ovitraps at two sites became positive for the species in July-August 2017. All female Ae. koreicus pools analysed were negative in biomolecular assays for Flavivirus. CONCLUSIONS Our findings of Ae. koreicus in Genoa constitute, to the best of our knowledge, the first report of the species in northwest Italy and in a Mediterranean port city. The species appears to be established; trapping and climatic data support survival of Ae. koreicus in the area through three consecutive winters. Monitoring of adult mosquitoes detected the species two years before its discovery with ovitraps; trapping for adult specimens appears to be a more effective tool for the early detection of IMS. The airport (located near the commercial port area) and the flower market are the most probable sites of introduction; however, the exact time and place of arrival of this IMS in Liguria remain unknown. Based on morphological and genetic data, a common origin for most of the Ae. koreicus populations established in Europe is suspected. So far, no control measures have been adopted in Genoa and the species will probably colonize an even wider area in the next few years.
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Affiliation(s)
- Marco Ballardini
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle dʼAosta (IZSPLV), Turin, Italy
| | | | | | - Alessandra Pautasso
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle dʼAosta (IZSPLV), Turin, Italy
| | - Maria Vittoria Riina
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle dʼAosta (IZSPLV), Turin, Italy
| | - Giorgia Triglia
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta (IZSPLV), Imperia, Italy
| | - Federica Verna
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle dʼAosta (IZSPLV), Turin, Italy
| | - Veronica Bellavia
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle dʼAosta (IZSPLV), Turin, Italy
| | - Maria Cristina Radaelli
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle dʼAosta (IZSPLV), Turin, Italy
| | - Enrica Berio
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta (IZSPLV), Imperia, Italy
| | - Annalisa Accorsi
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta (IZSPLV), Imperia, Italy
| | | | | | | | - Pier Luigi Acutis
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle dʼAosta (IZSPLV), Turin, Italy
| | - Cristina Casalone
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle dʼAosta (IZSPLV), Turin, Italy
| | - Walter Mignone
- Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d’Aosta (IZSPLV), Imperia, Italy
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Zhao L, Alto BW, Jiang Y, Yu F, Zhang Y. Transcriptomic Analysis of Aedes aegypti Innate Immune System in Response to Ingestion of Chikungunya Virus. Int J Mol Sci 2019; 20:ijms20133133. [PMID: 31252518 PMCID: PMC6651163 DOI: 10.3390/ijms20133133] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 06/21/2019] [Accepted: 06/23/2019] [Indexed: 01/07/2023] Open
Abstract
Aedes aegypti (L.) is the primary vector of emergent mosquito-borne viruses, including chikungunya, dengue, yellow fever, and Zika viruses. To understand how these viruses interact with their mosquito vectors, an analysis of the innate immune system response was conducted. The innate immune system is a conserved evolutionary defense strategy and is the dominant immune system response found in invertebrates and vertebrates, as well as plants. RNA-sequencing analysis was performed to compare target transcriptomes of two Florida Ae. aegypti strains in response to chikungunya virus infection. We analyzed a strain collected from a field population in Key West, Florida, and a laboratory strain originating from Orlando. A total of 1835 transcripts were significantly expressed at different levels between the two Florida strains of Ae. aegypti. Gene Ontology analysis placed these genes into 12 categories of biological processes, including 856 transcripts (up/down regulated) with more than 1.8-fold (p-adj (p-adjust value) ≤ 0.01). Transcriptomic analysis and q-PCR data indicated that the members of the AaeCECH genes are important for chikungunya infection response in Ae. aegypti. These immune-related enzymes that the chikungunya virus infection induces may inform molecular-based strategies for interruption of arbovirus transmission by mosquitoes.
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Affiliation(s)
- Liming Zhao
- Florida Medical Entomology Laboratory, University of Florida, 200 9th Street South East, Vero Beach, FL 32962, USA.
| | - Barry W Alto
- Florida Medical Entomology Laboratory, University of Florida, 200 9th Street South East, Vero Beach, FL 32962, USA
| | - Yongxing Jiang
- Mosquito Control Services, City of Gainesville, 405 NW 39th Avenue Gainesville, FL 32609, USA
| | - Fahong Yu
- Interdisciplinary Center for Biotechnology Research, University of Florida, 2033 Mowry Road, Gainesville, FL 32611, USA
| | - Yanping Zhang
- Interdisciplinary Center for Biotechnology Research, University of Florida, 2033 Mowry Road, Gainesville, FL 32611, USA
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El Niño Southern Oscillation, overseas arrivals and imported chikungunya cases in Australia: A time series analysis. PLoS Negl Trop Dis 2019; 13:e0007376. [PMID: 31107863 PMCID: PMC6544329 DOI: 10.1371/journal.pntd.0007376] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Revised: 05/31/2019] [Accepted: 04/09/2019] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Chikungunya virus (CHIKV) is an emerging mosquito-borne pathogen circulating in tropical and sub-tropical regions. Although autochthonous transmission has not been reported in Australia, there is a potential risk of local CHIKV outbreaks due to the presence of suitable vectors, global trade, frequent international travel and human adaptation to changes in climate. METHODOLOGY/PRINCIPAL FINDINGS A time series seasonal decomposition method was used to investigate the seasonality and trend of monthly imported CHIKV cases. This pattern was compared with the seasonality and trend of monthly overseas arrivals. A wavelet coherence analysis was applied to examine the transient relationships between monthly imported CHIKV cases and southern oscillation index (SOI) in time-frequency space. We found that the number and geographical distribution of countries of acquisition for CHIKV in travellers to Australia has increased in recent years. The number of monthly imported CHIKV cases displayed an unstable increased trend compared with a stable linear increased trend in monthly overseas arrivals. Both imported CHIKV cases and overseas arrivals showed substantial seasonality, with the strongest seasonal effects in each January, followed by each October and July. The wavelet coherence analysis identified four significant transient relationships between monthly imported CHIKV cases and 6-month lagged moving average SOI, in the years 2009-2010, 2012, 2014 and 2015-2016. CONCLUSION/SIGNIFICANCE High seasonal peaks of imported CHIKV cases were consistent with the high seasonal peaks of overseas arrivals into Australia. Our analysis also indicates that El Niño Southern Oscillation (ENSO) variation may impact CHIKV epidemics in endemic regions, in turn influencing the pattern of imported cases.
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Monteiro VVS, Navegantes-Lima KC, de Lemos AB, da Silva GL, de Souza Gomes R, Reis JF, Rodrigues Junior LC, da Silva OS, Romão PRT, Monteiro MC. Aedes-Chikungunya Virus Interaction: Key Role of Vector Midguts Microbiota and Its Saliva in the Host Infection. Front Microbiol 2019; 10:492. [PMID: 31024463 PMCID: PMC6467098 DOI: 10.3389/fmicb.2019.00492] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 02/26/2019] [Indexed: 01/02/2023] Open
Abstract
Aedes mosquitoes are important vectors for emerging diseases caused by arboviruses, such as chikungunya (CHIKV). These viruses’ main transmitting species are Aedes aegypti and Ae. albopictus, which are present in tropical and temperate climatic areas all over the globe. Knowledge of vector characteristics is fundamentally important to the understanding of virus transmission. Only female mosquitoes are able to transmit CHIKV to the vertebrate host since they are hematophagous. In addition, mosquito microbiota is fundamentally important to virus infection in the mosquito. Microorganisms are able to modulate viral transmission in the mosquito, such as bacteria of the Wolbachia genus, which are capable of preventing viral infection, or protozoans of the Ascogregarina species, which are capable of facilitating virus transmission between mosquitoes and larvae. The competence of the mosquito is also important in the transmission of the virus to the vertebrate host, since their saliva has several substances with biological effects, such as immunomodulators and anticoagulants, which are able to modulate the host’s response to the virus, interfering in its pathogenicity and virulence. Understanding the Aedes vector-chikungunya interaction is fundamentally important since it can enable the search for new methods of combating the virus’ transmission.
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Affiliation(s)
- Valter Vinícius Silva Monteiro
- Laboratory of Inflammation and Pain, Department of Pharmacology, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - Kely Campos Navegantes-Lima
- Graduate Program in Neuroscience and Cellular Biology, Biology Science Institute, Federal University of Pará, Belém, Brazil
| | | | | | - Rafaelli de Souza Gomes
- Graduate Program in Pharmaceutical Science, Health Science Institute, Federal University of Pará, Belém, Brazil
| | - Jordano Ferreira Reis
- School of Pharmacy, Health Science Institute, Federal University of Pará, Belém, Brazil
| | - Luiz Carlos Rodrigues Junior
- Laboratory of Cellular and Molecular Immunology, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil
| | - Onilda Santos da Silva
- Department of Microbiology, Immunology and Parasitology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Pedro Roosevelt Torres Romão
- Laboratory of Cellular and Molecular Immunology, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil
| | - Marta Chagas Monteiro
- Graduate Program in Neuroscience and Cellular Biology, Biology Science Institute, Federal University of Pará, Belém, Brazil.,Graduate Program in Pharmaceutical Science, Health Science Institute, Federal University of Pará, Belém, Brazil
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Matusali G, Colavita F, Bordi L, Lalle E, Ippolito G, Capobianchi MR, Castilletti C. Tropism of the Chikungunya Virus. Viruses 2019; 11:v11020175. [PMID: 30791607 PMCID: PMC6410217 DOI: 10.3390/v11020175] [Citation(s) in RCA: 76] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 02/16/2019] [Accepted: 02/17/2019] [Indexed: 12/12/2022] Open
Abstract
Chikungunya virus (CHIKV) is a re-emerging mosquito-borne virus that displays a large cell and organ tropism, and causes a broad range of clinical symptoms in humans. It is maintained in nature through both urban and sylvatic cycles, involving mosquito vectors and human or vertebrate animal hosts. Although CHIKV was first isolated in 1953, its pathogenesis was only more extensively studied after its re-emergence in 2004. The unexpected spread of CHIKV to novel tropical and non-tropical areas, in some instances driven by newly competent vectors, evidenced the vulnerability of new territories to this infectious agent and its associated diseases. The comprehension of the exact CHIKV target cells and organs, mechanisms of pathogenesis, and spectrum of both competitive vectors and animal hosts is pivotal for the design of effective therapeutic strategies, vector control measures, and eradication actions.
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Affiliation(s)
- Giulia Matusali
- National Institute for Infectious Diseases "Lazzaro Spallanzani" IRCCS, 00149 Rome, Italy.
| | - Francesca Colavita
- National Institute for Infectious Diseases "Lazzaro Spallanzani" IRCCS, 00149 Rome, Italy.
| | - Licia Bordi
- National Institute for Infectious Diseases "Lazzaro Spallanzani" IRCCS, 00149 Rome, Italy.
| | - Eleonora Lalle
- National Institute for Infectious Diseases "Lazzaro Spallanzani" IRCCS, 00149 Rome, Italy.
| | - Giuseppe Ippolito
- National Institute for Infectious Diseases "Lazzaro Spallanzani" IRCCS, 00149 Rome, Italy.
| | - Maria R Capobianchi
- National Institute for Infectious Diseases "Lazzaro Spallanzani" IRCCS, 00149 Rome, Italy.
| | - Concetta Castilletti
- National Institute for Infectious Diseases "Lazzaro Spallanzani" IRCCS, 00149 Rome, Italy.
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Aedes koreicus—a new member of the genus Aedes establishing in Germany? Parasitol Res 2019; 118:1073-1076. [DOI: 10.1007/s00436-019-06232-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Accepted: 01/24/2019] [Indexed: 10/27/2022]
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Pfitzner WP, Lehner A, Hoffmann D, Czajka C, Becker N. First record and morphological characterization of an established population of Aedes (Hulecoeteomyia) koreicus (Diptera: Culicidae) in Germany. Parasit Vectors 2018; 11:662. [PMID: 30558660 PMCID: PMC6296035 DOI: 10.1186/s13071-018-3199-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 11/13/2018] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND The East Asian mosquito species Aedes koreicus was recorded out of its native range for the first time in Belgium in 2008. Since then, several other European populations or single individuals have been observed throughout Europe with reports from Italy, Switzerland, European Russia, Slovenia, Germany and Hungary. The Italian population seems to be the only one that is expanding rapidly, so the Swiss population very likely derives from it. RESULTS In a surveillance program for invasive mosquito species, a single larva of Ae. koreicus was found in a cemetery vase in 2016 in the city of Wiesbaden, Germany. In the following year the finding was confirmed and an established population could be proven over an area of about 50 km2. The morphological identification of the first larva was confirmed by sequencing of a region within the nad4 sequence. A study of adult females showed that the morphological characteristics of this population are not identical to the populations from Belgium and Italy. The eggs and larvae were found together with Aedes j. japonicus in the same breeding sites and ovitraps, as well as with other indigenous mosquito species such as Culex pipiens/Culex torrentium, Aedes geniculatus and Anopheles plumbeus. CONCLUSIONS Since the newly discovered population in Germany shows different morphological characteristics to the populations in Belgium and Italy, it seems to originate from an independent introduction. It remains unknown how the introduction took place. A further spread similar to the one in northern Italy can be assumed for the future due to similar climatic conditions.
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Affiliation(s)
- Wolf Peter Pfitzner
- Kommunale Aktionsgemeinschaft zur Bekämpfung der Schnakenplage e. V. (KABS), Georg-Peter-Süß-Str. 3, 67346 Speyer, Germany
| | - Alice Lehner
- Kommunale Aktionsgemeinschaft zur Bekämpfung der Schnakenplage e. V. (KABS), Georg-Peter-Süß-Str. 3, 67346 Speyer, Germany
| | - Daniel Hoffmann
- Kommunale Aktionsgemeinschaft zur Bekämpfung der Schnakenplage e. V. (KABS), Georg-Peter-Süß-Str. 3, 67346 Speyer, Germany
| | - Christina Czajka
- Kommunale Aktionsgemeinschaft zur Bekämpfung der Schnakenplage e. V. (KABS), Georg-Peter-Süß-Str. 3, 67346 Speyer, Germany
| | - Norbert Becker
- Kommunale Aktionsgemeinschaft zur Bekämpfung der Schnakenplage e. V. (KABS), Georg-Peter-Süß-Str. 3, 67346 Speyer, Germany
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Jansen S, Heitmann A, Lühken R, Jöst H, Helms M, Vapalahti O, Schmidt-Chanasit J, Tannich E. Experimental transmission of Zika virus by Aedes japonicus japonicus from southwestern Germany. Emerg Microbes Infect 2018; 7:192. [PMID: 30482893 PMCID: PMC6258727 DOI: 10.1038/s41426-018-0195-x] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 10/16/2018] [Accepted: 10/25/2018] [Indexed: 01/08/2023]
Abstract
The invasive mosquito species Aedes japonicus japonicus (Ae. japonicus) is widely distributed in Central Europe and is a known vector of various arboviruses in the laboratory, including flaviviruses such as Japanese Encephalitis virus or West Nile virus. However, the vector competence of Ae. japonicus for the recently emerging Zika virus (ZIKV) has not been determined. Therefore, field-caught Ae. japonicus from Germany were orally infected with ZIKV and incubated at 21, 24, or 27 °C to evaluate the vector competence under climate conditions representative of the temperate regions (21 °C) in the species' main distribution area in Europe and of Mediterranean regions (27 °C). Aedes japonicus was susceptible to ZIKV at all temperatures, showing infection rates between 10.0% (21 °C) and 66.7% (27 °C). However, virus transmission was detected exclusively at 27 °C with a transmission rate of 14.3% and a transmission efficiency of 9.5%. Taking into account the present distribution of Ae. japonicus in the temperate regions of Central Europe, the risk of ZIKV transmission by the studied Ae. japonicus population in Central Europe has to be considered as low. Nevertheless, due to the species' vector competence for ZIKV and other mosquito-borne viruses, in combination with the possibility of further spread to Mediterranean regions, Ae. japonicus must be kept in mind as a potential vector of pathogens inside and outside of Europe.
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Affiliation(s)
- Stephanie Jansen
- Bernhard Nocht Institute for Tropical Medicine, 20359, Hamburg, Germany
- German Centre for Infection Research (DZIF), Partner site Hamburg-Luebeck-Borstel-Riems, 20359, Hamburg, Germany
| | - Anna Heitmann
- Bernhard Nocht Institute for Tropical Medicine, 20359, Hamburg, Germany.
| | - Renke Lühken
- Bernhard Nocht Institute for Tropical Medicine, 20359, Hamburg, Germany
| | - Hanna Jöst
- Bernhard Nocht Institute for Tropical Medicine, 20359, Hamburg, Germany
| | - Michelle Helms
- Bernhard Nocht Institute for Tropical Medicine, 20359, Hamburg, Germany
| | - Olli Vapalahti
- University of Helsinki and Helsinki University Hospital, 00100, Helsinki, Finland
| | - Jonas Schmidt-Chanasit
- Bernhard Nocht Institute for Tropical Medicine, 20359, Hamburg, Germany
- German Centre for Infection Research (DZIF), Partner site Hamburg-Luebeck-Borstel-Riems, 20359, Hamburg, Germany
| | - Egbert Tannich
- Bernhard Nocht Institute for Tropical Medicine, 20359, Hamburg, Germany
- German Centre for Infection Research (DZIF), Partner site Hamburg-Luebeck-Borstel-Riems, 20359, Hamburg, Germany
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Reduced diversity of gut microbiota in two Aedes mosquitoes species in areas of recent invasion. Sci Rep 2018; 8:16091. [PMID: 30382151 PMCID: PMC6208342 DOI: 10.1038/s41598-018-34640-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 10/23/2018] [Indexed: 12/20/2022] Open
Abstract
Aedes mosquitoes are considered highly successful global invasive species and vectors of several pathogens of relevance for public health. Their midgut's microbiota can play an important role in affecting not only their vectorial competence but also their fitness, physiology, food digestion, metabolism, immunity and adaptation to new environmental conditions. Using high-throughput sequencing we compared the microbiota of Aedes albopictus collected in Italy with those reported in populations from France and Vietnam. We also analysed Aedes koreicus gut microbiota for the first time. We found remarkable individual difference along with common bacterial taxa in both species. Ae. albopictus collected in Italy had a lower richness and a different composition of microbiota in respect to specimens collected in France and Vietnam. It also showed a core microbiota formed mainly of bacteria of the genus Pseudomonas. Overall, the two Aedes species (Ae. albopictus and Ae. koreicus) collected in Italy, showed a large core microbiota with 75.98% of the identified Operational Taxonomic Units. Furthermore, Ae. albopictus had 2.5% prevalence of Wolbachia and 0.07% of Asaia spp, while Ae. koreicus had 14.42% of Asaia spp. and no Wolbachia. This study provides new informations on the spatial variation of the midgut bacterial communities in mosquitoes of medical relevance within areas of recent invasion and provide the basis for further studies aimed at assessing the effects of such variation on vectorial capacity for a range of pathogens.
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Barzon L. Ongoing and emerging arbovirus threats in Europe. J Clin Virol 2018; 107:38-47. [PMID: 30176404 DOI: 10.1016/j.jcv.2018.08.007] [Citation(s) in RCA: 82] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Accepted: 08/20/2018] [Indexed: 11/17/2022]
Abstract
During the last decades, arboviruses that are endemic in Europe have expanded their geographic range and caused an increasing number of human outbreaks. These viruses include West Nile virus, which is expanding its area of circulation in central and southern Europe; Usutu virus, with increasing evidence of a role in human disease; tick-borne encephalitis virus, which is being detected in northern areas and at higher altitudes as a consequence of climate warming; Crimean-Congo hemorrhagic fever virus, which is endemic in Eastern Europe and the Middle East, but has been recently detected in Spain; other viruses, such as California encephalitis virus antigenic group, which circulate in northern and central Europe but whose relevance for human disease in largely unknown. In addition, the rise in global travel and trade has posed Europe to an increased risk of introduction and expansion of exotic arthropod vectors and autochthonous transmission of arboviruses, like dengue and chikungunya viruses, following new introductions from endemic areas. Implementation of integrated arbovirus surveillance programs has been crucial to adopt proper control measures. The identification of emerging outbreaks is however challenging and requires a high degree of awareness and laboratory capacity, especially for the most neglected but potentially threatening pathogens.
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Affiliation(s)
- Luisa Barzon
- Department of Molecular Medicine, University of Padova, via A. Gabelli 63, 35121, Padova, Italy.
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