PRELIMINARY SURVEY OF INVASIVE MOSQUITO SPECIES (DIPTERA: CULICIDAE) AT TWO ALTITUDINAL LEVELS IN THE VALJEVO MUNICIPALITY OF SERBIA
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Abstract
Although invasive mosquito species such as Aedes albopictus and Aedes japonicus are expanding their distribution across Europe and invading many areas in the Balkans, data on their presence and population dynamics in some regions of Serbia remain limited. This study implemented active surveillance in the municipality of Valjevo, western Serbia, to assess the occurrence of invasive Aedes species across urban and rural habitats at two altitudinal levels. In the urban area (city of Valjevo), only Ae. albopictus was detected, with a total of 2,389 eggs collected during the one-month sampling period at approximately 275 m a.s.l. However, both Ae. albopictus and Ae. japonicus were present in the rural village of Leskovice, where 3,500 eggs were collected at higher altitudes of 773–777 m a.s.l. The mean number of Ae. albopictus eggs per five traps, collected across four sampling events, was higher in the rural area (700.00±442.82) compared to the urban site (477.80±211.37). These findings contribute to the current knowledge of invasive mosquito populations in western Serbia.
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