Medical and Veterinary Entomology最新文献

{"title":"Citizen science reveals host-switching in louse flies and keds (Diptera: Hippoboscidae) during a period of anthropogenic change.","authors":"Denise C Wawman, Adrian L Smith, Ben C Sheldon","doi":"10.1111/mve.70029","DOIUrl":"10.1111/mve.70029","url":null,"abstract":"<p><p>The Hippoboscidae (Diptera) are a family of obligate blood-feeding ectoparasites of birds (louse flies) and mammals (keds) that are known to vector pathogenic agents. Citizen scientists collected 4365 hippoboscids of 12 species, from 117 host species, in the UK, Ireland and the Isle of Man, as part of the 'Mapping the UK's Flat Flies Project'. Of the 212 host-parasite interactions recorded, 70 were previously unreported in the region. Analyses of host characteristics showed evidence of niche separation by host size of the sympatric generalist species Ornithomya avicularia (L.) and Ornithomya fringillina (Curtis). Comparisons with data from a previous study, published in 1962, showed that all three generalist species in the genus Ornithomya increased their host associations during a period of climate and other anthropogenic changes: for example, the switch by some species of gulls (Laridae) to anthropogenic food sources has occurred over the same period that louse flies have started to parasitize them. These changes may have consequences for human and other animal health.</p>","PeriodicalId":18350,"journal":{"name":"Medical and Veterinary Entomology","volume":" ","pages":"305-322"},"PeriodicalIF":1.9,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13140014/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145422096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Detection of arsenic, mercury, cadmium and lead compounds in Calliphora vicina (Diptera: Calliphoridae) larvae and their potential impact on larval development.","authors":"Ana Catarina Fialho, Vasco Branco, Edite Oliveira-Torres, Cristina Carvalho, Alexandre Quintas, Carlos Família, Paulo Mascarenhas","doi":"10.1111/mve.70047","DOIUrl":"10.1111/mve.70047","url":null,"abstract":"<p><p>Heavy metal exposure represents a substantial health risk to humans and other animals, in some cases leading to death. However, detecting these metals in decaying corpses can pose a considerable challenge. In such situations, the eventual presence of necrophagous insects feeding on the remains may serve as a valuable tool for detecting and measuring these toxic substances. Nonetheless, heavy metals might affect insect development and survival rates. This study explored the effects of increasing concentrations of arsenic, mercury, cadmium and lead compounds on the survival and development rate of Calliphora vicina (Robineau Desvoidy, 1830) (Diptera: Calliphoridae) larvae. Additionally, the research investigated the possibility of tracing these metals in the developed larvae and whether bioaccumulation occurred. The larvae were reared in a dog food matrix infused with varying concentrations of these heavy metal compounds, ranging from 0.0 (control) to 60 mg/kg. The results showed that all tested metals increased mortality rates in a non-linear dose-dependent manner. Higher concentrations of each metal limited larval growth, as evidenced by lower length and weight than the control group. This growth inhibition could lead to inaccurate post-mortem estimations based on entomological evidence collected in heavily contaminated substrates. All metals were successfully detected in the larvae; however, bioaccumulation was only confirmed for cadmium at low concentrations. Therefore, C. vicina larvae can serve as a valuable toxicological indicator for these elements, especially when larvae are found in the corpses of individuals chronically exposed to the assessed heavy metals.</p>","PeriodicalId":18350,"journal":{"name":"Medical and Veterinary Entomology","volume":" ","pages":"386-395"},"PeriodicalIF":1.9,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145912277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Description of Rhipicephalus hibericus phenology and main hosts in its type locality.","authors":"Ruth Rodríguez-Pastor, Agustín Estrada-Peña, Javier Millán","doi":"10.1111/mve.70024","DOIUrl":"10.1111/mve.70024","url":null,"abstract":"<p><p>We conducted a study on different aspects of the biology and ecology of the recently described Rhipicephalus hibericus Millán, Rodríguez-Pastor and Estrada-Peña (Ixodida: Ixodidae) in agricultural and riparian habitats of its type locality (Zaragoza, north-east Spain), with a focus on seasonal dynamics of questing individuals and the identification of the main hosts (both through live-trapping and molecular blood meal analysis in questing adults). We further evaluated the effect of potential wildlife hosts (micro and meso-mammals, and birds), habitat (agrarian and natural) and climate variables such as temperature and relative humidity, on the dynamics of the three stages. The activity of the adults of R. hibericus was detected from early spring to early summer. Questing tick abundance was higher in the natural than in the agrarian habitats. Captures revealed that adult ticks parasitized meso-mammals in spring, while larvae and nymphs were found only in summer in the three dominant micromammals: the Algerian mouse (Mus spretus Lataste (Rodentia: Muridae)) (mean prevalence 52%), the wood mouse (Apodemus sylvaticus Linnaeus (Rodentia: Muridae)) (44%) and the greater white-toothed shrew (Crocidura russula Hermann (Eulipotyphla: Soricidae)) (41%). No R. hibericus was detected on any live-trapped bird. Blood meal analysis of questing adults confirmed the prominent role of the Algerian mouse as the feeding source for nymphs but also revealed that they can also feed on other unidentified hosts, such as the red kite (Milvus milvus Linnaeus (Accipitriformes: Accipitridae)). This study aims to increase the knowledge of the biology of R. hibericus, as well as to provide information about the exposure to this tick species in an area where humans, wildlife, ticks and pathogens are in close contact.</p>","PeriodicalId":18350,"journal":{"name":"Medical and Veterinary Entomology","volume":" ","pages":"268-281"},"PeriodicalIF":1.9,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145355308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unravelling the biochemical aspects of the interaction between ticks and Leishmania using a tick cell line.","authors":"Beatriz Filgueiras Silvestre, Karoline Dos Anjos Lima, Fernanda de Paula Pepino, Daniela Cosentino-Gomes, Adivaldo Fonseca, Lesley Bell-Sakyi, Georgia Correa Atella, Lucia H Pinto-da-Silva","doi":"10.1111/mve.70038","DOIUrl":"10.1111/mve.70038","url":null,"abstract":"<p><p>Leishmaniasis comprises a group of vector-borne neglected tropical diseases caused by species of the obligatory intracellular parasite Leishmania, transmitted by the bite of dipteran sand flies. Infected dogs serve as the primary domestic reservoir of Leishmania parasites and are often found in close association with various arthropods, such as fleas and ticks. There have been recent reports of Leishmania infections occurring in areas non-endemic for sand fly species, leading to reconsideration of the hypothesis that other arthropods, such as ticks, may also play a significant role in the natural history and epidemiology of leishmaniasis. Here, we used a tick cell line as a tool to study Leishmania infantum and tick interaction. The results showed that L. infantum can bind to and proliferate inside Ixodes scapularis IDE8 tick cells. The infection did reduce tick cell viability and induce reactive oxygen species (ROS) production. Lipid profile analysis showed that the presence of L. infantum increased oxysterol in tick cells and influenced tick cell lipid biosynthesis, since an increase in glycerolipids and esterified cholesterol was observed in infected cells at 48 h. Further experiments are necessary to elucidate whether Leishmania can overcome the various biochemical and tissue barriers within ticks and be transmitted to the host.</p>","PeriodicalId":18350,"journal":{"name":"Medical and Veterinary Entomology","volume":" ","pages":"350-359"},"PeriodicalIF":1.9,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13139984/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145701356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prevalence and seasonal dynamics of botfly (Metacuterebra infulata) parasitism in the rodent Hylaeamys megacephalus in a remnant of Brazilian Cerrado.","authors":"Suzanne Stefanny Vieira Lopes, Claire Pauline Röpke Ferrando, Marco Miguel de Oliveira, Magno Augusto Zazá Borges, Natália Oliveira Leiner","doi":"10.1111/mve.70069","DOIUrl":"10.1111/mve.70069","url":null,"abstract":"<p><p>Parasitism is mediated by environmental factors and intrinsic host attributes, leading to spatio-temporal dynamics of host-parasite infestation. Mammals are the main hosts of larvae of Cuterebrinae flies, which have been observed in the neotropical rodent Hylaeamys megacephalus (Fischer) (Rodentia, Cricetidae) within the Brazilian Cerrado. Besides describing seasonal dynamics of botfly parasitism in this rodent, we also tested the hypothesis that the prevalence of botfly parasitism varies seasonally, with larvae being more prevalent in the warm-wet season, due to favorable climatic conditions for egg development. Second, we tested the hypothesis that the prevalence of botfly parasitism is higher among adults than juveniles, as the former present greater habitat use and larger movements, leading to increased exposure to parasites; and finally, we tested the hypothesis that the prevalence of botfly larvae is male-biased, due to greater male exposure and susceptibility to parasitism. The study was carried out between 2019 and 2023 at Gloria Experimental Farm (Uberlândia, Minas Gerais, Brazil), through the capture-mark-recapture method. The botfly was identified as Metacuterebra infulata (Lutz) (Diptera, Oestridae), being the first report of a host for this parasite and a new botfly species parasitizing H. megacephalus. The prevalence of M. infulata within the host population was 15.28% (24 hosts). Most hosts presented only one botfly, and most of them were in the inguinal region, indicating host specificity, and therefore, H. megacephalus might be the primary host of M. infulata in this region. Contrary to our hypothesis, botfly infestations presented a multivoltine pattern, with a peak in infestations during April (transition from wet to dry season) that may reflect the time interval between the botfly oviposition behavior and the development of the third instar larvae in the host. Finally, we also did not find any difference in M. infulata prevalence between sexes and age classes. This may be associated with the parasite's biology, in which the oviposition behavior of adults leads to similar exposure for both sexes and age classes. The lack of sexual dimorphism between rodents may also contribute to the observed patterns. Our study reports a new host-parasite interaction involving rodents and botflies and pinpoints the importance of parasite life cycle on the seasonal dynamics of parasitism.</p>","PeriodicalId":18350,"journal":{"name":"Medical and Veterinary Entomology","volume":" ","pages":"205-214"},"PeriodicalIF":1.9,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147654469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Faunistic inventory of the genus Culicoides (Diptera: Ceratopogonidae) in Mauritius Island, Indian Ocean: Diversity and spatial distribution of species of veterinary interest.","authors":"Diana P Iyaloo, Khouaildi B Elahee, Varina Ramdonee Mosawa, Nabiihah R Munglee, Ishana Mahadeo, Christophe Genevieve, Hemant Bhoobun, Lorn Ribon-Chaudat, Rosenka Lardeux, Pachka Hammami, Karine Huber, David Bru, Yannick Grimaud, Harena Rasamoelina-Andriamanivo, Thierry Baldet, Claire Garros","doi":"10.1111/mve.70025","DOIUrl":"10.1111/mve.70025","url":null,"abstract":"<p><p>Viruses transmitted by biting midge species of the genus Culicoides (Diptera: Ceratopogonidae) affect and threaten human or animal health worldwide. In Mauritius, the risk of virus introduction through imported livestock or travellers is high, while serological evidence has demonstrated the circulation of two Culicoides-borne viruses in domestic ruminants and native deer, namely, bluetongue (BTV) and epizootic haemorrhagic disease (EHDV) viruses. To this day, no data at the main island scale have been published on the diversity and distribution of Culicoides species present in Mauritius. A spatial survey across Mauritius was conducted using black light suction traps (OVI traps) from 10 to 20 April 2023. Nineteen farms were selected to cover a diversity of hosts and environments. The traps were operational from dusk to dawn, with a single night capture per site. While the presence of Culicoides imicola Kieffer and Culicoides enderleini Cornet and Brunhes in Mauritius was confirmed, two additional species were detected, Culicoides kibatiensis Goetgheguer and Culicoides bolitinos Meiswinkel. All species were distributed all over the island. Overall abundance ranged from 4 to 19,764 females, with a mean and median abundance of 2,010 and 352 individuals/night/site. The total number of individuals collected during the study was highest for C. imicola (21,065) and lowest for C. bolitinos (313). All four species are Afrotropical and are suspected or historically known to be involved in BTV and EHDV transmission. While intra-specific morphological variations were detected, genetic analyses did not reveal any cryptic diversity. This work has updated the faunistic inventory of the genus Culicoides of veterinary interest in Mauritius and established a list of 4 Afrotropical species known to be vectors and distributed on the island. The abundance of Culicoides was relatively low as compared to mainland Africa but in the range of other islands in the south-west Indian Ocean region. Further work will investigate the temporal dynamics of the four species to identify high-risk seasons.</p>","PeriodicalId":18350,"journal":{"name":"Medical and Veterinary Entomology","volume":" ","pages":"282-293"},"PeriodicalIF":1.9,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13140005/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145345767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An updated checklist of Culicoides Latreille, 1809 biting midges from the highlands of eastern Democratic Republic of the Congo.","authors":"Alisa Kubala, Kristin Warren, Rudolf Meiswinkel, Michael Cranfield, Ian Robertson, Lian Yeap, Rebecca Vaughan-Higgins, Radar Nishuli, Eddy Kambale Syaluha, Jean-Paul Kabemba Lukusa, Martin Kabuyaya Balyananzi, Yvonne-Marie Linton","doi":"10.1111/mve.70049","DOIUrl":"10.1111/mve.70049","url":null,"abstract":"<p><p>The highlands of the eastern Democratic Republic of the Congo (DRC) are home to critically endangered eastern gorillas (Gorilla beringei). Concerns have been raised that the increased temperatures and extreme weather conditions associated with climate change will lead to an increase in the abundance and distribution of Culicoides-borne diseases. Here, we utilized an integrated morphological and molecular approach to identify Culicoides species in a small but significant collection of Culicoides captured from highland eastern gorilla habitat and surrounding areas and updated the Culicoides spp. reported from the highlands of the eastern DRC. A review of the literature related to Culicoides collections in the DRC was conducted in French and English. Recent worldwide checklists were consulted to rectify synonyms and other discrepancies found in the literature for the region. Fresh Culicoides specimens were collected, wings slide-mounted and remaining carcasses subjected to DNA extraction. A total of 82 Culicoides specimens were collected. From these, 75 high-quality DNA barcodes (658-bp of the mtDNA COI gene) were obtained, belonging to 14 distinct taxa, 11 of which were new records for the DRC, including C. bolitinos Meiswinkel, 1989, C. hortenis Khamala & Kettle, 1971, C. citroneus Carter, Ingram & Macfie, 1920, and C. radiomaculatus Khamala & Kettle, 1971, and seven species new to science (C. sp. nr. citroneus, C. sp. nr. glabripennis 1, C. sp. nr. glabripennis 2, C. sp. nr. kibatiensis 1, C. sp. nr. kibatiensis 2, C. sp. nr. neavei 1 and C. sp. nr. neavei 2), increasing the known Culicoides fauna of the DRC from 20 to 31. The presence of C. imicola Kieffer, 1913, C. enderleini Cornet & Brunhes, 1994 and C. neavei Austin, 1912, was confirmed. The potential health impact of the association of known Culicoides pathogen vectors with endangered gorillas is discussed.</p>","PeriodicalId":18350,"journal":{"name":"Medical and Veterinary Entomology","volume":" ","pages":"422-440"},"PeriodicalIF":1.9,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13140009/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146113530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mosquito and arbovirus surveillance in wetlands of South-East England: Comparison of two adult mosquito traps, use of a novel trap with FTA™ cards and arbovirus testing.","authors":"Alexander G C Vaux, Harrison Hardy, Lucy Crossley, Colin J Johnston, Anthony J Abbott, Stephen Findlay-Wilson, Amanda Callaghan, Jolyon M Medlock","doi":"10.1111/mve.70053","DOIUrl":"10.1111/mve.70053","url":null,"abstract":"<p><p>Effective surveillance of mosquito populations is critical to monitoring and mitigating the spread of mosquito-borne diseases (MBDs). This study evaluated the relative trapping efficiency of two widely used adult mosquito traps-the Biogents BG-Sentinel (BGS) and the Mosquito Magnet® Executive (MM)-on British mosquitoes across four wetlands in south-east England over a 12-week period. A third trap, a Box-Gravid trap fitted with an FTA™ card, was deployed to detect arboviruses such as West Nile virus (WNV) via saliva collection. A total of 11,584 adult female mosquitoes representing 15 species were collected. The MM trap captured a significantly higher total number of mosquitoes, while the BGS trap demonstrated greater species evenness and was significantly more effective at catching Culex (Culex) pipiens L., 1758. Spatial variation strongly influenced catch rates, with significant differences between wetlands. No evidence of WNV was detected in any mosquito pools or FTA™ cards. While both trap types yielded similar species richness, the MM trap may be optimal for collecting large sample sizes of mammalophagic species, whereas the BGS is better suited for capturing enzootic vectors such as Culex pipiens s.l., and a broader spectrum of species. These findings provide evidence-based recommendations for future UK wetland surveillance and enhance preparedness for emerging vector-borne disease risks.</p>","PeriodicalId":18350,"journal":{"name":"Medical and Veterinary Entomology","volume":" ","pages":"407-421"},"PeriodicalIF":1.9,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13140037/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146132286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"From host to host, and continent to continent: Two phoresy-enabled Guimaraesiella hitchhiker louse species revealed by integrative taxonomy (Phthiraptera: Ischnocera).","authors":"Daniel R Gustafsson, Leshon Lee, Alexandra A Grossi, Fasheng Zou, David J X Tan, Hwang Wei Song, Rudolf Meier","doi":"10.1111/mve.70045","DOIUrl":"10.1111/mve.70045","url":null,"abstract":"<p><p>The 'core Guimaraesiella' comprise a morphologically rather homogeneous group of avian chewing lice (Phthiraptera), most of which remain undescribed. Based on an integrative approach combining morphological characters and analyses of COI barcoding sequences, we here describe two new species within this group: Guimaraesiella impiger new species and Guimaraesiella stellana new species. Both species were collected from hippoboscid flies in Singapore, suggesting that they are capable of moving phoretically between hosts. In at least G. impiger, this was confirmed as louse specimens from another 30 host species that were found to be conspecific with the holotype of G. impiger in our mOTU analysis. This, together with limited morphological variability between species, highlights the need to combine genetic and morphological data when identifying 'core Guimaraesiella' species from southeast Asia. Moreover, both louse species appear to be able to cross vast geographical distances. Guimaraesiella impiger is known from across southeast Asia as well as in Malawi, despite none of the known hosts occurring in both Asia and Africa. Guimaraesiella stellana is known from two host species, one in Singapore and one in Australia, separated by several known biogeographical barriers, which seem to have limited the range of all known closely related species to the Australo-Papuan region; how G. stellana arrived in Singapore on a nonmigratory host is presently unknown. These cases highlight that comparisons with only locally occurring louse species may not be a valid identification method for this group. As both species described here are morphologically similar, identification of cryptic species of lice in this group within Guimaraesiella may need to rely on COI barcodes or other molecular markers.</p>","PeriodicalId":18350,"journal":{"name":"Medical and Veterinary Entomology","volume":" ","pages":"360-385"},"PeriodicalIF":1.9,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145863700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessing infection rates in field-collected Culicoides populations: Example of a large-scale study on bluetongue and epizootic hemorrhagic disease viruses in Culicoides species (Diptera: Ceratopogonidae) in Reunion Island, Indian ocean.","authors":"Claire Garros, Yannick Grimaud, Facundo Muñoz, Floriane Boucher, Eric Cardinale, Olivier Esnault, Hélène Guis, Annelise Tran, Thierry Baldet, Thomas Balenghien, Catherine Cêtre-Sossah","doi":"10.1111/mve.70082","DOIUrl":"https://doi.org/10.1111/mve.70082","url":null,"abstract":"<p><p>Characterising the vector role of a species is critical to understand and quantify host-vector-pathogen interactions. This role has to be assessed for each suspected vector species, but also at the population level. Indeed, different populations of the same species can exhibit biological and ecological variability that can amplify or limit their epidemiological role in transmitting pathogens to human and/or animal populations. In this work, we characterise the spatio-temporal dynamics of two major viruses of veterinary interest (bluetongue virus [BTV] and epizootic hemorrhagic disease virus [EHDV]) in the five species of Culicoides (Diptera: Ceratopogonidae) present in Reunion Island, located in the Indian Ocean. Our aim is to quantify the infection rates of the two viruses in field-collected Culicoides over a 2-year period. A total of 33,358 individuals comprising 11,504 pools were molecularly screened to detect the presence of both viruses. Our work applied an original statistical approach based on the use of Bayesian inference and showed that all five Culicoides species could be involved in the transmission of the two viruses with different levels of infection. EHDV circulated within Culicoides populations for only 4 months over the study period, while BTV circulated within the same populations throughout the entire 2-year period. We hypothesized that although both viruses are transmitted by the same Culicoides species, they exhibit distinct epidemiological patterns: BTV displays enzootic circulation in Reunion Island, whereas EHDV shows an epizootic pattern.</p>","PeriodicalId":18350,"journal":{"name":"Medical and Veterinary Entomology","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2026-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147856520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}