Porres-Camacho, A. et al. 2026. Viral epidemiological surveillance in the otters (Lontra longicaudis) of the Peñas Blancas River basin, Costa Rica. UNED Research Journal. 18, 1 (May 2026), e6302. DOI:https://doi.org/10.22458/urj.v18i1.6302.