ABSTRACT. Genetic evidence for monozygotic (identical) twinning in mammalian species is rare in the literature. Here we report what may be the first pair of monozygotic twins identified in a wild caniform carnivore, the grey wolf (Canis lupus). One of these individuals remained in its natal population of Banks Island, Northwest Territories, Canada, while its twin migrated across the polar sea ice to the mainland. This suggests divergent life history strategies in genetically identical individuals, making this incidence of twinning particularly interesting.Key words: wolf, Canis lupus, monozygotic twin, identical twin, Banks Island, dispersal, migration, life history RÉSUMÉ. Il est rare que la documentation fasse état de preuves génétiques à l'égard de jumeaux monozygotes (identiques) chez les espèces de mammifères. Ici, nous faisons mention de ce qui pourrait être la première paire de jumeaux monozygotes identifiée chez un carnivore caniforme sauvage, le loup gris (Canis lupus). Un de ces individus est resté au sein de sa population natale de l'île Banks, dans les Territoires du Nord-Ouest, au Canada, tandis que son jumeau a migré jusqu'à la terre ferme au moyen de la glace polaire. Cela laisse entrevoir des stratégies de cycle biologique différentes chez des individus génétiquement identiques, ce qui rend cette gémellité particulièrement intéressante.
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