. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. 236 J. Ventura & J. Gosálbez v2 -3 -4 - -5-. -1 1 I 1 1 1 ' 1 1 1 '—i 1 ' ' 7 8 9 10 11 12 13 14 V-, Fig. 3: Canonical representation of the analyzed samples of Arvícola terrestris. AL: Alps; MC: Massif Central; VA: Valle de Arán; AS: Asturias. Such results induce to attribute the specimens from the Massif Central to the subspecies A. t. exitus (meaning A. t. scherman), results that widely coincide with the present conception of morphological groups established
. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. 236 J. Ventura & J. Gosálbez v2 -3 -4 - -5-. -1 1 I 1 1 1 ' 1 1 1 '—i 1 ' ' 7 8 9 10 11 12 13 14 V-, Fig. 3: Canonical representation of the analyzed samples of Arvícola terrestris. AL: Alps; MC: Massif Central; VA: Valle de Arán; AS: Asturias. Such results induce to attribute the specimens from the Massif Central to the subspecies A. t. exitus (meaning A. t. scherman), results that widely coincide with the present conception of morphological groups established in France by Spitz & Morel (1972), and generally accepted in the last reviews of A. terrestris of this country (Le Louarn & Saint-Girons, 1977; Baudoin, 1984). The differences detected in the size of the skull and, consequently, the spacing out of the centroids and the independence of the confidential regions that VA and MC show in the canonical representation, as well as the geographical isolation between them, induces us to keep the subspecific independence of the Pyrenean forms with respect to the populations attributed to A. t. exitus. Nevertheless, the canonical analysis shows there is a closer relationship between the Pyrenean forms of A. ter- restris and A. t. exitus from the Massif Central, than the relationship existing bet- ween those and the populations from the northwestern part of Spain. These results give a logical explanation to the diverse interpretations that can be found in the bibliography on the taxonomic identity of the populations from the Massif Central (Miller, 1912; Hinton, 1926; Cantuel, 1943; Didier, 1943; Reichstein, 1963). The distance that AS shows in the canonical diagram with respect to the other samples and, specially, with respect to the Pyrenean one, induces us to review the taxonomic status of the Iberian populations. The extreme position they adopt in the. Please note that these images are extracted from scanned page images tha
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