. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. Variation in sousliks 101. Fig. 5: Projection of six samples of Spermophilus citellus onto the first two discriminant variates, males and females separate. Polygons enclose scores for all individuals within a locality group, and symbols are placed on group centroids. Male sample 2 with only three specimens is given as a group centroid. Polygon of pooled Pannonian samples is striped. See text for identifying symbols. Discriminant analysis was performed upon the raw d
. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. Variation in sousliks 101. Fig. 5: Projection of six samples of Spermophilus citellus onto the first two discriminant variates, males and females separate. Polygons enclose scores for all individuals within a locality group, and symbols are placed on group centroids. Male sample 2 with only three specimens is given as a group centroid. Polygon of pooled Pannonian samples is striped. See text for identifying symbols. Discriminant analysis was performed upon the raw data, and separately for each sex. The first two discriminant functions (DF) explained % of the variance in the original data set in males ( and % respectively), and °/o in females ( and °Io respectively). °7o of the male specimens were allocated into their actual group, and % of the females (Table 1). Despite the relatively high proportion of appropriately classified specimens, overlap between the samples was high. Polish sousliks (sample 1) entirely overlapped with the pooled Pannonian sam- ple for both sexes (Fig. 5). Sample 2 also suggested a closer affinity with Pannonian rather than Balkan sousliks, what does accord with its geographic position. Two pooled Balkan samples (B and C) were closer to the pooled Pannonian sousliks than those from the Jakupica/Karadjica Mts. (sample 11). At least females from pooled sample C had a greater affinity with sousliks from Pannonia than those within pool- ed sample B. Phenetic relations such as these could also be expected from the geographic derivations of these samples. Although it has been suggested that ratios are best avoided in statistical treatments (Sokal & Rohlf 1981), they remain appropriate as diagnostic characters in subspecies of the European souslik. Ruzic (1978) distinguished south Pannonian sousliks from those from the central Balkans by their relatively shorter tails. I test
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