Distribution and Abundance of Bluetongue Vectors in Sardinia: Comparison of Field Data with Prediction Maps

Wiley - Tập 53 Số 7 - Trang 312-316 - 2006
E Pili1, S Ciuccè1, Jacopo Culurgioni2, V. Figus2, G. Pinna3, Annalisa Marchi4
1Addresses of authors: Dipartimento di Biologia Sperimentale‐Sezione di Genetica
2Dipartimento di Biologia Animale ed Ecologia , Università di Cagliari , Viale Poetto 1, 09126, Cagliari, Italy
3Centro Anti‐Insetti Provincia di Cagliari, Cagliari, Italy
4Corresponding author: Tel.: 39 70 6758056; fax: 39 70 6758045; E-mail: [email protected]

Tóm tắt

SummaryFollowing the spread of Bluetongue virus (BTV) in many Mediterranean countries during the last 5 years, presence of the main BTV vector, Culicoides imicola Kieffer (Diptera: Ceratopogonidae), was recorded in the region, including the island of Sardinia where the first BT epidemic originally started in the year 2000. Several models were also designed based on climate variables and satellite imaging in order to predict the presence and abundance of BTV vectors across Europe. A 3 years entomological survey (2001–2003) was conducted in the southern part of Sardinia confirming the widespread presence of C. imicola. However, substantial differences in terms of relative abundance were observed between field data and prediction maps based on satellite‐derived climate variables. Distribution of other potential BT vectors, belonging to Culicoides obsoletus Meigen and Culicoides pulicaris Linnaeus groups was also not congruent with model‐based predictions. These results stress the need of taking into account additional environmental factors (such as soil type, land usage, etc.) and local microclimatic conditions, especially related to breeding site requirements of Culicoides species, in order to predict the presence and abundance of BT vectors and to design reliable prediction maps on a local scale.

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Wiley

Tập 53 Số 7

312-316

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