. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. 126 B. Krystufek. a bcdefghijk Fig. 5: Morphological variability of in Microtus nivalis from Austria and Yugoslavia. Table 1: Frequency of occurrence of simplex morphotype (M^) in 13 geographic samples of M. nivalis from Austria and Yugoslavia. Identifying numbers refer to sample areas (Fig. 1). Sample N % simplex 1 30 2 25 3 26 4 53 5 22 6 25 7 12 8 19 9 17 10 20 11 8 12 5 13 22 and 100 (samples 11
. Bonner zoologische Beiträge : Herausgeber: Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn. Biology; Zoology. 126 B. Krystufek. a bcdefghijk Fig. 5: Morphological variability of in Microtus nivalis from Austria and Yugoslavia. Table 1: Frequency of occurrence of simplex morphotype (M^) in 13 geographic samples of M. nivalis from Austria and Yugoslavia. Identifying numbers refer to sample areas (Fig. 1). Sample N % simplex 1 30 2 25 3 26 4 53 5 22 6 25 7 12 8 19 9 17 10 20 11 8 12 5 13 22 and 100 (samples 11 and 12). It also predominated in samples 1 and 2. Typica was common in Alpine samples (3 and 4) and the northwestern Dinaric Alps (sample 5 in particular). Towards the south the simplex morphotype again gradually began to prevail, attaining a frequency of 100 % in southern Macedonia; it was also the domi- nant one in eastern Serbia (sample 13) as well (Table 1). ]VP with BSAS (duplicata morphotype) was found in 9 snow voles ( %) from samples 1, 3, 4, 5, 6, 7, and 9 (Fig. 5g, h). The dental field of T4 was isolated in % of cases. Occasionally it was con- nected with T3 (Fig. 5e) and through it even with T2 (Fig. 5f). A strong tendency towards the reduction of PC (Fig. 5 i) was recorded in Macedonian samples (especial- ly 12) and eastern Serbia (sample 13). One specimen from the Karnische Alps (sample 3) showed a reduction of PC which is obviously abnormal for the species (Fig. 5j). A groove on T3 (Fig. 5 k) corresponding to the radnensis morphotype on M^ was found in two snow voles from geographic sample 4. First lower molar (Mi) Four morphotypes could be distinguished in the structure of the anteroconid (Nadachowski 1984): 1. Gud morphotype. — BRA4 and BSA4 developed, T5 and AC confluent (Fig. 6 a).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrat
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