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Comparative analysis of the characters of the first lower molar in Microtus [ Terricola ] thomasi [ Rodentia, Arvicolidae ]

100%

Brunet-Lecomte P. , Nadachowski A.

tom 37

nr 1

Evolutionary divergence of Microtus liechtensteini [Rodentia, Arvicolidae] based on the first lower molar

100%

Brunet-Lecomte P. , Krystufek B.

Acta Theriologica

1993

tom 38

nr 3

Morphometrical analysis of the first lower molar (Mi) confirmed Microtus liechtensteini (Wettstein, 1927) to be closer to M. multiplex than to M, subterranean. In the terms of the inclination of the pitymyan rhombus, M. liechtensteini appeared to be more evolved than M. multiplex. Significant interpopulation variability was recorded as regards morphometrical analysis of Mi in M. liechtensteini: M, I. petrovi was larger than the nominate race M. I. liechtensteini, while populations from the sub-Mediterranean zone differed by more open anterior loop.

Comparative odontometrical analysis of the first lower molar in Microtus [Terricola] multiplex [Arvicolinae, Rodentia] from western Alps

80%

Brunet-Lecomte P. , Nappi A. , Montuire S.

Acta Theriologica

2010

tom 55

nr 2

129-138

The morphology of the first lower molar (M1) of Microtus (Terricola) multiplex (Fatio, 1905) was compared amongst 15 populations from the Alps (Switzerland, Italy, France). M. multiplex orientalis from Trentino Alto Adige is close to the nominative subspecies M. multiplex multiplex from Ticino characterised by a great size, a not tilted pitymyan rhombus and an important development of the anterior part of the M1. M. multiplex druentius from Ubaye mainly differs from the nominative subspecies by a smaller tooth size. Populations from Valle d’Aosta and Piemonte show on the whole a morphology intermediate between M. m. multiplex and M. m. druentius subspecies, however, the pitymyan rhombus is more tilted and the development of the anterior part more reduced in populations from Eastern and Central Piemonte. The Western populations (from Trièvès, Vercors, Royans and Chambaran) belonging to the subspecies M. m. niethammeri are the most differentiated with a small or median size of the M1, a reduced development of the anterior part and a very tilted pitymyan rhombus, particularly in the population from Chambaran. The populations from Matheysine and Grésivaudan are morphologically a link between M. m. druentius and M. m. niethammeri subspecies.