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Mastozoología neotropical
versão impressa ISSN 0327-9383
Resumo
BURRONI, Nora; LOETTI, María V e BUSCH, María. Reproductive success in Mus musculus (Rodentia) exposed to conspecific's odors and overcrowding in laboratory conditions. Mastozool. neotrop. [online]. 2014, vol.21, n.1, pp.115-120. ISSN 0327-9383.
To assess the use of conspecific's odors for controlling commensal Mus musculus, we studied the effect of overcrowding on the reproductive success of females in laboratory conditions. While pregnancy rates, litter size, the weight at birth and survival until weaning did not differ between overcrowding and control groups, the time elapsed until pregnancy was lower for the control group, while the mean weight and the total number of offspring surviving at weaning were higher in the control group. Control females produced a mean of 1.25 offspring, while overcrowded females produced 0.6. A lower weight of the offspring of crowded females may affect their future chances of survival and reproduction.
Palavras-chave : House mice; Pests-control; Reproduction.