First helminthological data on the Iberian adder, Vipera seoanei

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.

Automated summary

The helminth fauna in the gut contents of Iberian adders, Vipera seoanei, was studied in relation to biological and eco-geographic factors. A total of 317 preserved stomach and intestine samples were examined, covering the species' distributional range. Similar to other Vipera species in the Iberian Peninsula, the helminth fauna in V. seoanei was impoverished, but unlike Vipera species from Central and East Europe, helminths were mostly found in adult vipers and occurred in vipers at the periphery of the species range characterized by specific environmental conditions.