RT Journal Article T1 First helminthological data on the Iberian adder, Vipera seoanei A1 Roca, V. A1 Gómez Ramírez, F. A1 Espasandín, I. A1 Megia Palma, Rodrigo Manuel A1 Perera, A. A1 Martínez Freiría, F. AB The helminth fauna present in the gut contents of Iberian adders, Vipera seoanei (Squamata: Viperidae), were characterised and analysed in respect to biological and eco-geographic factors that may affect the occurrence and diversity of helminths in this species. A total of 317 samples of preserved stomachs and intestines, covering the distributional range of V. seoanei, were examined. Similar to other Vipera species from the Iberian Peninsula, the helminth fauna was also impoverished in V. seoanei, but unlike other Vipera species from Central and East Europe, helminths were mostly found in adult vipers, and occurred in vipers located at the periphery of the species range, characterised by low elevation, high temperature and precipitation levels, and abundant pastures. PB Springer SN 0932-0113 YR 2023 FD 2023 LK https://hdl.handle.net/20.500.14352/112647 UL https://hdl.handle.net/20.500.14352/112647 LA eng NO Roca, V., Gómez-Ramírez, F., Espasandín, I. et al. First helminthological data on the Iberian adder, Vipera seoanei. Parasitol Res 122, 1499–1507 (2023). https://doi.org/10.1007/s00436-023-07849-9 NO Open Access funding provided thanks to the CRUE-CSIC agreement with Springer Nature. NO Fundaçao para a Ciência e a Tecnologia (Portugal) DS Docta Complutense RD 18 abr 2025