XENOMONITORING STUDIES OF MOSQUITOES FOR DIAROFILARIOSIS
Abstract
Dirofilariasis is a zoonotic vector-borne disease caused by nematodes Dirofilaria repens and Dirofilaria immitis. Due to climatic changes, the disease is actively spreading from endemic Southern European regions to the east and west of the continent, including Ukraine. The presence of filariae in an area can be monitored through xenomonitoring – the detection of parasites among blood-sucking arthropods. Research on the species composition of mosquitoes in the Khmelnytskyi and Vinnytsia regions revealed that dominant species include Aedes spp., Culex spp., and Anopheles spp. Comparing the diversity of species, abundance, and distribution of mosquitoes among suburban and urban areas, a 4.5 times higher concentration of mosquitoes was found in urban areas. Molecular screening revealed that mosquitoes of the Aedes spp. and Culex spp. species are potential vectors for transmitting D. repens and D. immitis, particularly in Ukraine. These findings indicate a risk of dirofilariasis infection in the Khmelnytskyi and Vinnytsia regions. Coinfections of D. repens and D. immitis were also found among mosquitoes, underscoring the importance of monitoring and preventive measures to prevent diseases among animals and humans. Given the periodic detection of D. immitis in dogs in Ukraine, it is important to focus on the spread of this parasite. Meanwhile, temperature conditions and geographical location play a crucial role in the distribution and spread of the disease. Studies have identified possible reservoirs of the disease. By monitoring mosquitoes, areas with a high risk of dirofilariasis infection can be promptly identified, and effective control and prevention measures can be implemented. This is particularly important in the context of climate change and the expansion of the range of potential vector mosquitoes, which may lead to the expansion of the disease's distribution areas. Thus, xenomonitoring of mosquitoes is a key element of dirofilariasis control strategies, ensuring effective monitoring and management of this vector-borne invasion.
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