Helminth fauna and some biotic and abiotic traits were analysed in Iberian adder Vipera seoanei (Squamata: Viperidae) a European viper nearly endemic to northern Iberian Peninsula, in an attempt to confirm previous claims of relationships between this ecological traits in this genus. A total of 317 samples mostly covering the distributional range of V. seoanei, were examined. Compared with other Vipera species from the Iberian Peninsula, the helminth fauna is also impoverished in V. seoanei, but it is contrary to 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.
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.
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