Survival of pups to weaning was most influenced by their date of birth, their ability at a very young age to haul out on the ice, and the stability of the fast ice during their weaning. ###>La survie des petits jusqu'au sevrage dépend surtout de leur date de naissance, de leur aptitude à remonter sur la glace dès le bas âge et de la stabilité de la glace fixe durant le sevrage.