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Skull shape in the genus Apodemus: phylogenetic conservatism and-or adaptation to local conditions

100%

Frynta D., Mikulova P., Vohralik V.

Acta Theriologica

2006

tom 51

nr 2

139-153

We studied morphological variation among western Palaearctic species of woodmice (genusApodemus). Twenty one dental and skull variables were measured and evaluated using multivariate statistical approaches. A total of 501 specimens of the following 9 species of wood mice were examined:A. hermonensis, A. hyrcanicus, A. uralensis (=microps),A. flavicollis, A. sylvaticus, A. epimelas, A. mystacinus, A. peninsulae, A. agrarius. Species occupying large geographic areas were represented by two or three geographically distant populations. The analyses, based both on original and size adjusted data, revealed congruence between morphological evolution and phylogenetic relationships. The integrity of major clades was supported by morphometric trees. Conspecific samples showed a clear tendency to cluster together regardless of ecological differences and geographical distances. This finding may suggest that studied traits exhibit evolutionary conservatism, and therefore are not fully determined by actual selective pressures. Besides this, we demonstrated that morphological differentiation of taxa belonging to the subgenus Sylvaemus was more pronounced in Central Europe than in the Near East. This observed phenomenon could be of adaptive nature.

The location of the Mus musculus-M.domesticus hybrid zone in the Balkans: clues from morphology

100%

Macholan M., Krystufek B., Vohralik V.

Acta Theriologica

2003

tom 48

nr 2

Three morphological characters were used to depict the position of the hybrid zone between two species of house mice, M. musculus Linnaeus, 1758 and M. domesticus Schwarz et Schwarz, 1943, across a vast area covering countries of the former Yugoslavia, Albania, Bulgaria and Greece. Quantitative approach based on a morphological index (MI), resembling the hybrid index widely used in allozyme-based genetic studies, was used. The zone crosses Slovenia south of the Sava River, and then follows the Dinaric Mts to Montenegro and northern Albania. Contrary to many previously published results, the zone was found to run parallel with northern borders of Albania and the former Yugoslavian Macedonia, about 150 km north of the Greek border, thus giving its course rather "shallow" appearance at this part of the Balkan Peninsula.

Ograniczanie wyników

2 Acta Theriologica

2 Vohralik V.

1 Frynta D.

1 Krystufek B.

1 Macholan M.

1 Mikulova P.

1 2006

1 2003

Wyniki wyszukiwania

Skull shape in the genus Apodemus: phylogenetic conservatism and-or adaptation to local conditions

The location of the Mus musculus-M.domesticus hybrid zone in the Balkans: clues from morphology