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Bušić N, Klobučar A, Landeka N, Žitko T, Vignjević G, Turić N, Sudarić Bogojević M, Merdić E, Kučinić M, Bruvo Mađarić B. A DNA barcode reference library of Croatian mosquitoes (Diptera: Culicidae): implications for identification and delimitation of species, with notes on the distribution of potential vector species. Parasit Vectors 2024; 17:216. [PMID: 38734639 PMCID: PMC11088778 DOI: 10.1186/s13071-024-06291-9] [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: 01/30/2024] [Accepted: 04/20/2024] [Indexed: 05/13/2024] Open
Abstract
BACKGROUND Mosquitoes pose a risk to human health worldwide, and correct species identification and detection of cryptic species are the most important keys for surveillance and control of mosquito vectors. In addition to traditional identification based on morphology, DNA barcoding has recently been widely used as a complementary tool for reliable identification of mosquito species. The main objective of this study was to create a reference DNA barcode library for the Croatian mosquito fauna, which should contribute to more accurate and faster identification of species, including cryptic species, and recognition of relevant vector species. METHODS Sampling was carried out in three biogeographical regions of Croatia over six years (2017-2022). The mosquitoes were morphologically identified; molecular identification was based on the standard barcoding region of the mitochondrial COI gene and the nuclear ITS2 region, the latter to identify species within the Anopheles maculipennis complex. The BIN-RESL algorithm assigned the COI sequences to the corresponding BINs (Barcode Index Number clusters) in BOLD, i.e. to putative MOTUs (Molecular Operational Taxonomic Units). The bPTP and ASAP species delimitation methods were applied to the genus datasets in order to verify/confirm the assignment of specimens to specific MOTUs. RESULTS A total of 405 mosquito specimens belonging to six genera and 30 morphospecies were collected and processed. Species delimitation methods assigned the samples to 31 (BIN-RESL), 30 (bPTP) and 28 (ASAP) MOTUs, with most delimited MOTUs matching the morphological identification. Some species of the genera Culex, Aedes and Anopheles were assigned to the same MOTUs, especially species that are difficult to distinguish morphologically and/or represent species complexes. In total, COI barcode sequences for 34 mosquito species and ITS2 sequences for three species of the genus Anopheles were added to the mosquito sequence database for Croatia, including one individual from the Intrudens Group, which represents a new record for the Croatian mosquito fauna. CONCLUSION We present the results of the first comprehensive study combining morphological and molecular identification of most mosquito species present in Croatia, including several invasive and vector species. With the exception of some closely related species, this study confirmed that DNA barcoding based on COI provides a reliable basis for the identification of mosquito species in Croatia.
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Affiliation(s)
- Nataša Bušić
- Department of Biology, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia.
| | - Ana Klobučar
- Andrija Štampar Teaching Institute of Public Health, Zagreb, Croatia
| | - Nediljko Landeka
- Teaching Institute for Public Health of the Istrian County, Pula, Croatia
| | - Toni Žitko
- Teaching Institute for Public Health, Split-Dalmatia County, Split, Croatia
| | - Goran Vignjević
- Department of Biology, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
| | - Nataša Turić
- Department of Biology, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
- Teaching Institute for Public Health of the Osijek-Baranja County, Osijek, Croatia
| | | | - Enrih Merdić
- Department of Biology, Josip Juraj Strossmayer University of Osijek, Osijek, Croatia
| | - Mladen Kučinić
- Faculty of Science, Department of Biology, University of Zagreb, Zagreb, Croatia
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Yared S, Gebressilasie A, Worku A, Mohammed A, Gunarathna I, Rajamanickam D, Waymire E, Balkew M, Carter TE. Breeding habitats, bionomics and phylogenetic analysis of Aedes aegypti and first detection of Culiseta longiareolata, and Ae. hirsutus in Somali Region, eastern Ethiopia. PLoS One 2024; 19:e0296406. [PMID: 38165914 PMCID: PMC10760653 DOI: 10.1371/journal.pone.0296406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Accepted: 12/12/2023] [Indexed: 01/04/2024] Open
Abstract
INTRODUCTION Arboviral diseases, such as dengue, chikungunya, yellow fever, and Zika, are caused by viruses that are transmitted to humans through mosquito bites. However, the status of arbovirus vectors in eastern Ethiopia is unknown. The aim of this study was to investigate distribution, breeding habitat, bionomics and phylogenetic relationship of Aedes aegypti mosquito species in Somali Regional State, Eastern Ethiopia. METHODS Entomological surveys were conducted in four sites including Jigjiga, Degehabur, Kebridehar and Godey in 2018 (October to December) to study the distribution of Ae. aegypti and with a follow-up collection in 2020 (July-December). In addition, an investigation into the seasonality and bionomics of Ae. aegypti was conducted in 2021 (January-April) in Kebridehar town. Adult mosquitoes were collected from indoor and outdoor locations using CDC light traps (LTs), pyrethrum spray collection (PSCs), and aspirators. Larvae and pupae were also collected from a total of 169 water-holding containers using a dipper between October and November 2020 (rainy season) in Kebridehar town. The species identification of wild caught and reared adults was conducted using a taxonomic key. In addition, species identification using mitochondrial and nuclear genes maximum likelihood-based phylogenetic analysis was performed. RESULTS In the 2018 collection, Ae. aegypti was found in all study sites (Jigjiga, Degahabour, Kebridehar and Godey). In the 2020-2021 collection, a total of 470 (Female = 341, Male = 129) wild caught adult Ae. aegypti mosquitoes were collected, mostly during the rainy season with the highest frequency in November (n = 177) while the lowest abundance was in the dry season (n = 14) for both February and March. The majority of Ae. aegypt were caught using PSC (n = 365) followed by CDC LT (n = 102) and least were collected by aspirator from an animal shelter (n = 3). Aedes aegypti larval density was highest in tires (0.97 larvae per dip) followed by cemented cisterns (0.73 larvae per dip) and the Relative Breeding Index (RBI) was 0.87 and Container Index (CI) was 0.56. Genetic analysis of ITS2 and COI revealed one and 18 haplotypes, respectively and phylogenetic analysis confirmed species identification. The 2022 collection revealed no Ae. aegpti, but two previously uncharacterized species to that region. Phylogenetic analysis of these two species revealed their identities as Ae. hirsutus and Culiseta longiareolata. CONCLUSION Data from our study indicate that, Ae. aegypti is present both during the wet and dry seasons due to the availability of breeding habitats, including water containers like cemented cisterns, tires, barrels, and plastic containers. This study emphasizes the necessity of establishing a national entomological surveillance program for Aedes in Somali region.
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Affiliation(s)
- Solomon Yared
- Department of Biology, Jigjiga University, Jigjiga, Ethiopia
| | - Araya Gebressilasie
- Department of Zoological Sciences, Addis Ababa University, Addis Ababa, Ethiopia
| | - Amha Worku
- Department of Biology, Jigjiga University, Jigjiga, Ethiopia
| | - Abas Mohammed
- Department of Biology, Jigjiga University, Jigjiga, Ethiopia
| | - Isuru Gunarathna
- Department of Biology, College of Arts and Sciences, Baylor University, Waco, TX, United States of America
| | - Dhivya Rajamanickam
- Department of Biology, College of Arts and Sciences, Baylor University, Waco, TX, United States of America
| | - Elizabeth Waymire
- Department of Biology, College of Arts and Sciences, Baylor University, Waco, TX, United States of America
| | - Meshesha Balkew
- Abt Associates, PMI VectorLink Ethiopia Project, Addis Ababa, Ethiopia
| | - Tamar E. Carter
- Department of Biology, College of Arts and Sciences, Baylor University, Waco, TX, United States of America
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Martinet JP, Bohers C, Vazeille M, Ferté H, Mousson L, Mathieu B, Depaquit J, Failloux AB. Assessing vector competence of mosquitoes from northeastern France to West Nile virus and Usutu virus. PLoS Negl Trop Dis 2023; 17:e0011144. [PMID: 37276229 DOI: 10.1371/journal.pntd.0011144] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Accepted: 05/06/2023] [Indexed: 06/07/2023] Open
Abstract
West Nile virus (WNV) and Usutu virus (USUV) are two arthropod-borne viruses that circulate in mainland France. Assessing vector competence has only been conducted so far with mosquitoes from southern France while an increasingly active circulation of WNV and USUV has been reported in the last years. The main vectors are mosquitoes of the Culex genus and the common mosquito Culex pipiens. Here, we measure the vector competence of five mosquito species (Aedes rusticus, Aedes albopictus, Anopheles plumbeus, Culex pipiens and Culiseta longiareolata) present in northeastern France. Field-collected populations were exposed to artificial infectious blood meal containing WNV or USUV and examined at different days post-infection. We show that (i) Cx. pipiens transmitted WNV and USUV, (ii) Ae. rusticus only WNV, and (iii) unexpectedly, Ae. albopictus transmitted both WNV and USUV. Less surprising, An. plumbeus was not competent for both viruses. Combined with data on distribution and population dynamics, these assessments of vector competence will help in developing a risk map and implementing appropriate prevention and control measures.
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Affiliation(s)
- Jean-Philippe Martinet
- Institut Pasteur, Université Paris Cité, Arboviruses and Insect Vectors Unit, Paris, France
- Université de Reims Champagne-Ardenne, Faculté de Pharmacie, ANSES, SFR Cap Santé, EA7510 ESCAPE-USC VECPAR, Reims, France
| | - Chloé Bohers
- Institut Pasteur, Université Paris Cité, Arboviruses and Insect Vectors Unit, Paris, France
| | - Marie Vazeille
- Institut Pasteur, Université Paris Cité, Arboviruses and Insect Vectors Unit, Paris, France
| | - Hubert Ferté
- Université de Reims Champagne-Ardenne, Faculté de Pharmacie, ANSES, SFR Cap Santé, EA7510 ESCAPE-USC VECPAR, Reims, France
| | - Laurence Mousson
- Institut Pasteur, Université Paris Cité, Arboviruses and Insect Vectors Unit, Paris, France
| | - Bruno Mathieu
- Faculté de Médecine, Maïeutique et Sciences de la Santé, Institut de Parasitologie et de Pathologie Tropicale, Strasbourg, France
| | - Jérôme Depaquit
- Université de Reims Champagne-Ardenne, Faculté de Pharmacie, ANSES, SFR Cap Santé, EA7510 ESCAPE-USC VECPAR, Reims, France
- Laboratoire de Parasitologie-Mycologie, CHU de Reims, Reims, France
| | - Anna-Bella Failloux
- Institut Pasteur, Université Paris Cité, Arboviruses and Insect Vectors Unit, Paris, France
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Giunti G, Becker N, Benelli G. Invasive mosquito vectors in Europe: From bioecology to surveillance and management. Acta Trop 2023; 239:106832. [PMID: 36642256 DOI: 10.1016/j.actatropica.2023.106832] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 01/07/2023] [Accepted: 01/10/2023] [Indexed: 01/13/2023]
Abstract
Invasive mosquitoes (Diptera: Culicidae) play a key role in the spread of a number of mosquito-borne diseases worldwide. Anthropogenic changes play a significant role in affecting their distribution. Invasive mosquitoes usually take advantage from biotic homogenization and biodiversity reduction, therefore expanding in their distribution range and abundance. In Europe, climate warming and increasing urbanization are boosting the spread of several mosquito species of high public health importance. The present article contains a literature review focused on the biology and ecology of Aedes albopictus, Ae. aegypti, Ae. japonicus japonicus, Ae. koreicus, Ae. atropalpus and Ae. triseriatus, outlining their distribution and public health relevance in Europe. Bioecology insights were tightly connected with vector surveillance and control programs targeting these species. In the final section, a research agenda aiming for the effective and sustainable monitoring and control of invasive mosquitoes in the framework of Integrated Vector Management and One Health is presented. The WHO Vector Control Advisory Group recommends priority should be given to vector control tools with proven epidemiological impact.
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Affiliation(s)
- Giulia Giunti
- Department of Pharmacy, University of Salerno, via Giovanni Paolo II 132, Fisciano, SA 84084, Italy
| | - Norbert Becker
- Faculty of Biosciences, University of Heidelberg, Im Neuenheimer Feld 230, Heidelberg 69120, Germany; Institute of Dipterology (IfD), Georg-Peter-Süß-Str. 3, Speyer 67346, Germany; IcyBac-Biologische Stechmückenbekämpfung GmbH (ICYBAC), Georg-Peter-Süß-Str. 1, Speyer 67346, Germany
| | - Giovanni Benelli
- Department of Agriculture, Food and Environment, University of Pisa, via del Borghetto 80, Pisa 56124, Italy.
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da Silva e Silva LH, da Silva FS, Medeiros DBDA, Cruz ACR, da Silva SP, Aragão ADO, Dias DD, Sena do Nascimento BL, Júnior JWR, Vieira DBR, Monteiro HADO, Neto JPN. Description of the mitogenome and phylogeny of Aedes spp. (Diptera: Culicidae) from the Amazon region. Acta Trop 2022; 232:106500. [PMID: 35584780 DOI: 10.1016/j.actatropica.2022.106500] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 04/29/2022] [Accepted: 05/01/2022] [Indexed: 11/01/2022]
Abstract
The genus Aedes (Diptera: Culicidae) includes species of great epidemiological relevance, particularly involved in transmission cycles of leading arboviruses in the Brazilian Amazon region, such as the Zika virus (ZIKV), Dengue virus (DENV), Yellow fever virus (YFV), and Chikungunya virus (CHIKV). We report here the first putatively complete sequencing of the mitochondrial genomes of Brazilian populations of the species Aedes albopictus, Aedes scapularis and Aedes serratus. The sequences obtained showed an average length of 14,947 bp, comprising 37 functional subunits, typical in animal mitochondria (13 PCGs, 22 tRNA, and 2 rRNA). The phylogeny reconstructed by Maximum likelihood method, based on the concatenated sequences of all 13 PCGs produced at least two non-directly related groupings, composed of representatives of the subgenus Ochlerotatus and Stegomyia of the genus Aedes. The data and information produced here may be useful for future taxonomic and evolutionary studies of the genus Aedes, as well as the Culicidae family.
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