Entry of bluetongue vector Culicoides imicola into livestock premises in Spain

Medical and Veterinary Entomology - Tập 23 Số 3 - Trang 202-208 - 2009
C. Calvete1, R. Estrada2, Miguel Ángel Miranda Chueca3, Ricardo del Río3, David Borrás4, F. J. BELDRON5, Anabel Vidaña Martínez5, Antonio J. Calvo5, Javier Lucientes2
1Unidad de Sanidad y Producción Animal, Centro de Investigación y Tecnología Agroalimentaria (CITA), Gobierno de Aragón, Zaragoza, Spain,
2Departamento de Patologìa Animal, Universidad de Zaragoza, Zaragoza, Spain.
3Laboratorio de Zoología Universidad de las Islas Baleares Palma de Mallorca Spain
4Instituto de Biología Animal de las Islas Baleares (IBABSA), Palma de Mallorca, Spain
5Area de Prevención y Control de Epizootías, Sanidad Animal y Servicios Ganaderos, grupo TRAGSA (TRAGSEGA), Madrid, Spain

Tóm tắt

Abstract.

Culicoides imicola Kieffer is considered to be the main vector of bluetongue disease (BT) and African horse sickness (AHS) in the Mediterranean basin. It has been assumed that this midge species is exophilic and, consequently, that stabling of livestock should provide effective protection against these diseases. This study presents the results of sampling surveys for C. imicola carried out both inside and outside stables on three farms in mainland Spain. The number of C. imicola captured varied as a function of the populations sampled and trap location (inside vs. outside). The daily mean number captured inside during the sampling of each farm population was directly correlated with the daily mean number captured outside, but daily correlation of captures was not observed. By contrast with previous studies, the mean catch of C. imicola inside was consistently higher than that outside. No clear effect of stable characteristics on the degree of entry was detected. In addition, proportions of males and age‐graded female groups varied among populations and with trap location. Proportionately more males and fewer engorged females were captured outside than inside, although the proportions varied among stables. These results contrast with those of previous studies, and with the assumed pronounced exophilic behaviour of C. imicola, and raise important questions about the vector activity of this species in the study area and its implications for the epidemiology of BT and/or AHS.

Từ khóa


Tài liệu tham khảo

10.4039/Ent125439-3

Barnard B.J.H., 1997, Some factors governing the entry of Culicoides spp. (Diptera: Ceratopogonidae) into stables., Onderstepoort Journal of Veterinary Research, 64, 227

Calvete C., 2007, Valoración de la eficacia de diferentes barreras fsicas y químicas para reducir la abundancia de potenciales vectores del virus de la lengua azul en el interior de instalaciones ganaderas, ITEA-Información técnica económica agraria, 28, 594

European Union, 2000, Council Directive 2000/75/EC of 20 November 2000. Laying Down Specific Provisions for the Control and Eradication of Bluetongue., Official Journal of the European Union, 327, 74

10.1111/j.1440-6055.1969.tb00727.x

10.1603/0022-2585-41.5.994

10.1136/vr.160.13.451-b

10.1111/j.0269-283X.2004.00516.x

McCullagh P., 1997, Generalized Linear Models, 21

10.1017/S0007485300000626

Mellor P.S., 1996, Culicoides: vectors, climate change and disease risk, Veterinary Bulletin, 66, 301

10.1053/tvjl.2002.0713

10.1146/annurev.ento.45.1.307

Mellor P.S., 1983, Potential vectors of bluetongue and African horse sickness viruses in Spain, Veterinary Record, 112, 229

Miranda M.A., 2004, Seasonal abundance of Culicoides imicola and C. obsoletus in the Balearic islands., Veterinaria Italiana, 40, 292

Ortega M.D., 1998, The seasonal and geographical distribution of Culicoides imicola, C. pulicaris group and C. obsoletus biting midges in central and southern Spain., Archives of Virology, 14, 85

Paton T., 1863, The ‘horse sickness’ of the Cape of Good Hope, The Veterinarian, 36, 489

10.3989/graellsia.1996.v52.i0.376

Theiler A., 1921, African Horse Sickness (Pestis Equorum), 1

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Medical and Veterinary Entomology

Tập 23 Số 3

202-208

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