The global warming effects concerning the distribution, abundance and bioecological bluetongue vectors in Romania

The aime of this work has been to analyse the global warming effects on bioecological bluetongue vectors in our country. The entomological surveillance (permanent and strategical) bluetongue vectors started in South, South-East and South –West of the country in 2003, enlarged in all regions in 2005. In the same year, Romania has been divided in 117 squares with 50x50 km² and 405 squares with 25x25 km² for permanent vectors surveillance. From theese has been selected 41 squares where has been assembled the traps for sampling insect in November-March and April-October period. During one year has been colected 1 sample by week for the permanent surveillance and many samples from other areas for strategical surveillance. Our purpouse was to establish: the distribition, abundance and seasonal dinamic vectors, free bluetongue vectors period, the analyse of the global warming effects on bioecological vectors in 36 districts. For same cool periods of the year (September-November) the results has been showed an increased level of the environement temperature and secundary an increased level of vectors number and the presence of theese in other habitats. We consider theese was caused by the global warming effects. In the same time the free vectors period has been reduced from 5 to 4 month, increasing the activities period with 30 days least.

Key words: entomological surveillance, Culicoides obsoletus, Culicoides pulicaris, abundance, distribution, Bluetongue.