Detection of the Schmallenberg virus in nulliparous Culicoides obsoletus/scoticus complex and C. punctatus—The possibility of transovarial virus transmission in the midge population and of a new vector

Larska, Magdalena; Lechowski, Lech; Grochowska, Maria; Zmudzinski, J.F.

doi:10.1016/j.vetmic.2013.07.015

Cited by 81 publications

(100 citation statements)

References 37 publications

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“…In fact, C. punctatus is the most common species in urban parks in the Basque Country, according to collections done using a battery powered-aspirator . This species is of potential interest as it could play a role in the epidemiology of Schmallenberg virus (SBV) and bluetongue virus (BTV) in Europe (Larska et al, 2013).…”

Section: Discussionmentioning

confidence: 99%

Comparison of different light sources for trapping Culicoides biting midges, mosquitoes and other dipterans

González

Alarcón-Elbal

Valle

et al. 2016

Veterinary Parasitology

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2 Highlights -Biting nematocerans and mosquitoes showed a clear affinity to specific wavelenghts, being fluorescent light sources more efficient than incandescent and LED lights.-Proven vectors of important economically diseases such as Culicoides obsoletus/C. scoticus are highly attracted to traps fitted with ultraviolete (UV) and green LEDs.-The paper highlighted the potential use of traps equipped with light sources emitting in wavelenghts close to 570 nm (green colour). Wavelengths in green (570 nm) resulted effective for targeting some Culicoides species, culicids and other midges. In a second trial, the effectiveness of 4-watt white and UV tubes was compared to traps fitted with UV LED and a standard incandescent light bulb. More specimens of all taxa were collected with fluorescent black light (UV) traps than with the other light sources, except culicids, which were recovered in high numbers from fluorescent white light traps. ABSTRACT

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Section: Discussionmentioning

confidence: 99%

Comparison of different light sources for trapping Culicoides biting midges, mosquitoes and other dipterans

González

Alarcón-Elbal

Valle

et al. 2016

Veterinary Parasitology

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“…In spite of many analogies to BTV, SBV spreads faster across Europe (5,22), which may be related to the biology of Culicoides spp. or the differences in the virus replication in the vector (14). The presence of SBV has been reported by EFSA in 25 European countries in May 2013, which included over 8000 herds of cattle, sheep, goats, buffaloes, wild cervids, European bison (13), and New and Old World camelids (5).…”

Section: Introductionmentioning

confidence: 99%

“…Similarly to BTV, SBV overwintered in many geographic areas (6,21,25), including Poland, and reappeared again in 2012 and 2013 spreading across the whole continent (5). While BTV ability to survive the winter has not been explained, the transovarial transmission of SBV in the midges has been suggested (14). SBV infection in Polish cattle was first reported in August 2012 (15).…”

Section: Introductionmentioning

confidence: 99%

Spread of Schmallenberg virus infections in the ruminants in Poland between 2012 and 2013

Larska

Kęsik-Maliszewska

Kuta

2014

Bulletin of the Veterinary Institute in Pulawy

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The aim of the study was to evaluate the prevalence of Schmallenberg virus (SBV) specific antibodies in ruminants from 13 Polish provinces, sampled between January 2010 and August 2013. A total number of 1813 serum samples from cattle, sheep, goats, mouflon, wild and farmed cervids, and European bison were tested by ELISA for viral nucleoprotein antibodies. First SBV seropositive animals were identified in August 2012 (1.6%), and the percentage increased gradually, reaching 57.1% in December of this year. The proportion of seropositive animals in 2013 at the level of 34.2% increased tenfold in comparison to 2012 (3.4%), which was particularly significant at the level of individual provinces. In 2013, the highest percentages of SBV seropositive animals were found in Dolnoslaskie (92.3%), Podlaskie (82.3%), and Zachodniopomorskie (80.9%) provinces. Significant associations between the seroprevalence and province of origin, month, ruminant species, and insect vector activity were found, while no dependence of animal age on seropositivity was observed. The differences between SBV seropositive large and small ruminants suggested the involvement of some vector exposure factors, which needs to be further investigated.

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“…Zimmer et al (2009) avaient également observé cette même espèce au sein d'une prairie bovine mais pas dans l'étable correspondante. L'espèce C. punctatus, récemment identifiée comme un vecteur possible du SBV (Larska et al 2013) et dont l'abondance semble notamment corrélée à la présence de moutons (Purse et al 2012), est relativement bien représentée en prairie ovine (8,8% du total des captures) mais aucun spécimen n'a été observé dans la bergerie ; cela pourrait s'expliquer par la localisation des gîtes larvaires. Le nombre de spécimens de l'espèce C. chiopterus est quant à lui probablement sous-estimé, comme démontré par Carpenter et al (2008b) pour les piégeages lumineux, puis confirmé par Griffioen et al (2011).…”

Section: Traitement Des éChantillons Et Analyseunclassified

“…scoticus) dans la bergerie suggère que ces femelles sont susceptibles de rester ou de pénétrer dans les bâtiments d'élevage ovin pour y pondre. L'importance des femelles non-pigmentées au sein de la bergerie pourrait s'expliquer soit par la recherche d'un hôte à piquer, soit par la présence de gîtes larvaires proches, internes ou externes, comme illustré en exploitation bovine (Zimmer et al 2008a(Zimmer et al , 2010 ; ces gîtes larvaires éventuels pourraient ainsi participer à la persistance des virus de la FCO et de Schmallenberg d'une année à l'autre malgré des hivers assez rigoureux, la possibilité d'une transmission transovarienne du SBV ayant récemment été suggérée pour quelques espèces de culicoïdes communes en Europe du Nord (Larska et al 2013). Rappelons que le nombre réel de femelles nouvellement émergées est probablement sous-estimé (Harrup et al 2013).…”

Section: Traitement Des éChantillons Et Analyseunclassified

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

Zimmer¹,

Losson²,

Saegerman³

et al. 2013

Annales de la Société entomologique de France (N.S.)

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Summary. Comparison of Culicoides Latreille 1809 populations (Diptera: Ceratopogonidae) present inside a Belgian sheepfold and a nearby sheep meadow. Culicoides biting midges (Diptera: Ceratopogonidae) serve as biological vectors for several pathogens, including the Bluetongue virus and the recently described Schmallenberg virus in northern Europe. These diseases have caused considerable direct and indirect economic losses to the sheep and cattle industries. This study undertaken between August and December 2007 on a sheep farm in the Namur province (Belgium) aims to evaluate Culicoides populations present inside a partially opened sheepfold and in a nearby sheep meadow, using light traps. The comparative analysis of insects trapped at 18 dates at regular intervals showed that Culicoides were most abundant inside this livestock building (17,450 midges) than in surrounding meadow (1,121 midges); this meadow had however a greater species diversity. The two species C. obsoletus and C. scoticus constituting the Obsoletus complex predominated for all trappings and females were much more numerous than males. Important capture of engorged females of the Obsoletus complex inside the sheepfold seems to reflect the possibility of an opportunistic endophagous behavior. Maintaining sheep inside livestock buildings in order to reduce the risk of Culicoides bites -and thus of pathogens transmission -however requires to limit biting midge populations which are likely to enter or to develop inside these buildings. Implementation of effective sanitation and hygiene measures against midges present inside farms, as well as establishing of measures to protect livestock against intrusion and improvement of "midge-proofing" of animal housing are therefore highly recommended.Résumé. Les moucherons piqueurs du genre Culicoides (Diptera : Ceratopogonidae) sont les vecteurs biologiques de nombreux agents pathogènes, dont les virus de la fièvre catarrhale ovine et de Schmallenberg, récemment décrits en Europe du Nord. Ces maladies ont engendré des pertes économiques considérables dans les cheptels ovin et bovin. Cette étude, entreprise d'août à décembre 2007 au sein d'une exploitation ovine de la province de Namur (Belgique), vise à évaluer, au moyen de pièges lumineux, les populations de Culicoides présentes à l'intérieur d'une bergerie partiellement ouverte et au sein d'une pâture ovine avoisinante. L'analyse comparative des insectes capturés à 18 dates à intervalles réguliers montre que les culicoïdes sont plus abondants à l'intérieur du bâtiment d'élevage (17.450 individus) que dans la prairie voisine (1.121 individus); celle-ci présente toutefois une plus grande diversité spécifique. Les deux espèces C. obsoletus et C. scoticus constituant le complexe Obsoletus sont majoritaires pour l'ensemble des piégeages et les femelles se montrent bien plus nombreuses que les mâles. L'importante capture de femelles gorgées de sang (complexe Obsoletus) à l'intérieur de la bergerie traduit la possibilité d'un comportement endophage opportuniste. L...

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Detection of the Schmallenberg virus in nulliparous Culicoides obsoletus/scoticus complex and C. punctatus—The possibility of transovarial virus transmission in the midge population and of a new vector

Cited by 81 publications

References 37 publications

Comparison of different light sources for trapping Culicoides biting midges, mosquitoes and other dipterans

Comparison of different light sources for trapping Culicoides biting midges, mosquitoes and other dipterans

Spread of Schmallenberg virus infections in the ruminants in Poland between 2012 and 2013

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

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