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RESEARCH PRODUCT

First helminthological data on the Iberian adder, Vipera seoanei.

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Abstract 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.