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Existence in parapatry of two species of Ophisops in Algeria (Aures): zoogeographical implications

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Two species of Ophisops, O. occidentalis and O. elegans (Lacertidae), occur in the Aures massif, Algeria, with a parapatric distribution. In relation to current ecological and bioclimatical factors, this situation is explained by an interspecific exclusion favouring O. occidentalis. Quaternary climatic modifications may have been responsible for wide variations in the distribution areas of Ophisops in Northern Africa, and account for their current geographical separation.

Affiliations: 1: Laboratoire de Zoogéographie, Université Montpellier 3, B.P. 5043, 34032 Montpellier Cedex 1, France


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