Culicoides spp. found near Lusitano stud farms in mainland Portugal which may contribute for IBH studies.

The research article investigates the presence of a certain breed of insect, Culicoides spp., in Lusitano stud farms in Portugal, ensuring a better understanding of a common skin disease in horses, Insect Bite Hypersensitivity (IBH).

Understanding Insect Bite Hypersensitivity (IBH)

Insect Bite Hypersensitivity or IBH is a common skin disease that affects many horses around the world.

• The primary cause of IBH has been identified as the saliva of Culicoides spp.
• However, the prevalence of IBH in Portugal and particularly among Lusitano horses is currently unknown.

Culicoides Populations in Portugal

The environment in Portugal serves as a favorable habitat for the population and activity of Culicoides spp.

• Several species of Culicoides exist in the area, namely C. imicola and C. obsoletus/C. scoticus.

Research Methodology

The research aimed to explore the population of the Culicoides in Lusitano stud farms, given their history of IBH.

• Thirteen stud farms with Lusitano horses were selected, all of which had a record of at least five horses affected by IBH.
• These farms were spread across several regions of mainland Portugal.
• The collection of Culicoides was carried out in May and June 2016, using OVI traps placed in these farms.

Results and Findings

The research yielded significant findings about the species of Culicoides in these stud farms.

• Several species of Culicoides were identified through the study.
• C. obsoletus/C. scoticus and C. imicola were found to be the most common in the farms.
• Additionally, the study also discovered the presence of other Culicoides species, such as C. pulicaris, in the farms.

These findings could serve as a base for widen the scope of understanding about IBH and possible intervention strategies for its prevention and control in the Portuguese horse population.