Comparaison des populations de<i>Culicoides</i>Latreille 1809 (Diptera : Ceratopogonidae) présentes au sein d’une bergerie belge et d’une prairie ovine associée

Zimmer, Jean-Yves; Losson, Bertrand; Saegerman, Claude; Kirschvink, Nathalie; Haubruge, Éric; Francis, Frédéric

doi:10.1080/00379271.2014.894239

Cited by 5 publications

(1 citation statement)

References 61 publications

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“…Those utilised by the Avaritia subgenus are often more closely associated with livestock farming. The most common and abundant livestock-associated species in northern Europe, C. obsoletus, demonstrates plasticity in larval development site selection, with individuals recovered from forest leaf litter, tree holes, flood plains, marshes, swamps and acid grassland habitats, silage residues, compost, fresh and stored manure of multiple species, livestock bedding and livestock housing [43][44][45][46][47][48]. Culicoides scoticus breeding habitats overlap with these and are similarly diverse [32,42,49,50].…”

Section: Introductionmentioning

confidence: 99%

Emergence dynamics of adult Culicoides biting midges at two farms in south-east England

et al. 2022

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Background Culicoides biting midges (Diptera: Ceratopogonidae) are biological vectors of livestock arboviruses that cause diseases with significant economic, social and welfare impacts. Within temperate regions, livestock movement during arbovirus outbreaks can be facilitated by declaring a ‘seasonal vector-free period’ (SVFP) during winter when adult Culicoides are not active. In this study we carry out long-term monitoring of Culicoides adult emergence from larval development habitats at two farms in the UK to validate current definitions of the SVFP and to provide novel bionomic data for known vector species. Methods Standard emergence traps were used to collect emerging adult Culicoides from dung heaps at two cattle farms in the south-east of England from June to November 2016 and March 2017 to May 2018. Culicoides were morphologically identified to species or complex level and count data were analysed using a simple population dynamic model for pre-adult Culicoides that included meteorological components. Results More than 96,000 Culicoides were identified from 267 emergence trapping events across 2 years, revealing clear evidence of bivoltinism from peaks of male populations of Culicoidesobsoletus emerging from dung heaps. This pattern was also reflected in the emergence of adult female Obsoletus complex populations, which dominated the collections (64.4% of total catch) and emerged throughout the adult active period. Adult male C. obsoletus were observed emerging earlier than females (protandry) and emergence of both sexes occurred throughout the year. Culicoides chiopterus and Culicoides scoticus were also identified in spring emergence collections, providing the first evidence for the overwintering of larvae in dung heaps for these species. Conclusions This study demonstrates continual and highly variable rates of emergence of Culicoides throughout the year. A lack of evidence for mass emergence in spring along with the ability to observe male generations highlights the need for complementary surveillance techniques in addition to light-trap data when investigating seasonality and phenology. Evidence was found of other vector species, C. chiopterus and C. scoticus, utilising cattle dung heaps as an overwintering habitat, further highlighting the importance of these habitats on farms. Graphical Abstract

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Section: Introductionmentioning

confidence: 99%

Emergence dynamics of adult Culicoides biting midges at two farms in south-east England

et al. 2022

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Retrospective analysis of Bluetongue farm risk profile definition, based on biology, farm management practices and climatic data

Cappai

Loi

Coccollone

et al. 2018

Preventive Veterinary Medicine

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Bluetongue (BT) is a vector-borne disease transmitted by species of Culicoides midges (Diptera: Ceratopogonidae). Many studies have contributed to clarifying various aspects of its aetiology, epidemiology and vector dynamic; however, BT remains a disease of epidemiological and economic importance that affects ruminants worldwide. Since 2000, the Sardinia region has been the most affected area of the Mediterranean basin. The region is characterised by wide pastoral areas for sheep and represents the most likely candidate region for the study of Bluetongue virus (BTV) distribution and prevalence in Italy. Furthermore, specific information on the farm level and epidemiological studies needs to be provided to increase the knowledge on the disease's spread and to provide valid mitigation strategies in Sardinia. This study conducted a punctual investigation into the spatial patterns of BTV transmission to define a risk profile for all Sardinian farmsby using a logistic multilevel mixed model that take into account agro-meteorological aspects, as well as farm characteristics and management. Data about animal density (i.e. sheep, goats and cattle), vaccination, previous outbreaks, altitude, land use, rainfall, evapotranspiration, water surface, and farm management practices (i.e. use of repellents, treatment against insect vectors, storage of animals in shelter overnight, cleaning, presence of mud and manure) were collected for 12,277 farms for the years 2011-2015. The logistic multilevel mixed model showed the fundamental role of climatic factors in disease development and the protective role of good management, vaccination, outbreak in the previous year and altitude. Regional BTV risk maps were developed, based on the predictor values of logistic model results, and updated every 10 days. These maps were used to identify, 20 days in advance, the areas at highest risk. The risk farm profile, as defined by the model, would provide specific information about the role of each factor for all Sardinian institutions involved in devising BT prevention and control strategies.

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Larval development sites of the main Culicoides species (Diptera: Ceratopogonidae) in northern Europe and distribution of coprophilic species larvae in Belgian pastures

Zimmer

Brostaux

Haubruge

et al. 2014

Veterinary Parasitology

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Comparaison des populations deCulicoidesLatreille 1809 (Diptera : Ceratopogonidae) présentes au sein d’une bergerie belge et d’une prairie ovine associée

Cited by 5 publications

References 61 publications

Emergence dynamics of adult Culicoides biting midges at two farms in south-east England

Emergence dynamics of adult Culicoides biting midges at two farms in south-east England

Retrospective analysis of Bluetongue farm risk profile definition, based on biology, farm management practices and climatic data

Larval development sites of the main Culicoides species (Diptera: Ceratopogonidae) in northern Europe and distribution of coprophilic species larvae in Belgian pastures

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