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Mammalia
Article
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Mammalia
Article . 1987 . Peer-reviewed
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Morphologie dentaire comparée de Pitymys lusitanicus et Pitymys duodecimcostatus (Arvicolidae, Rodentia) dans le nord-ouest de l’Espagne

Authors: Brunet-Lecomte, P.; Brochet, G.; Chaline, J.; Delibes, M.;

Morphologie dentaire comparée de Pitymys lusitanicus et Pitymys duodecimcostatus (Arvicolidae, Rodentia) dans le nord-ouest de l’Espagne

Abstract

[FR] Cette étude a pour objet de comparer Ia morphologic dentaire des M1 inférieures de Pitymys lusitanicus lorsqu’il est sympatrique ou allopatrique avec Pitymys duodecimcostatus dans le nord-ouest de I’Espagne. Cette comparaison faite sur dii materiel actuel, bien identifié spécifiquement, a été réalisée a l’aide des analyses statistiques multiva­ riées portant sur treize variables calculées a partir de vingt-trois mesures prises sur chaque dent. Lorsque P. husitanicus est allopatrique avec P. duodecimcostatus, il présente une variabilité morphologique accrue de Ia M1, certaines dents pouvant presenter une mor­ phologie semblable a celle de P. duodecimcostatus. Lorsque P. husitanicus est sympatrique avec P. duodecimcostatus, sa variabilité morphologique est beaucoup plus restreinte et tie mime plus celle de P. duodecimcostatus. Ce déplaccment de morphologic pourrait résulter du fait que P. lusitanicus occupe une plus large niche écologique en zone allopatri­ que. Cette étude a des applications paléontologiques et évolutives. ElIe montre notamment Ia difficulté d’utiliser les M, pour distinguer les Pitymys fossiles sans l’utilisation des analyses multivariées. BIle suggére que Pitymys husitanicus est une forme dérivée de P. duodecimcostatus au cours du Quaternaire

[ENG] Lower M1 morphological comparisons between Pitytmys lusitanicus and Pitymys duodecimcostatus from North-Western Spain by the mean of multivariate analysis (13 variables deduced from 23 teeth measures) show that intraspecific variability is greater than interspecific one. When P. lusitanicus is allopatric with P. duodecimcostatus, their M1 are more variable, some of them looking as P. duodecimcostatus. This morphological displacement may be related either to a larger ecological niche or to interspecific competition with Microtus species. Pitymys husitanicus appears to be derived from P. duodecimcostatus.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
views
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Italian National Biodiversity Future Center