Age of Weaning in Two Subspecies of Deer Mice

作者： J. A. King , J. C. Deshaies , R. Webster

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摘要: Weaning age in deer mice is defined as the at which young maintain or gain weight during a 24-hour period of isolation; younger than weaning lose weight. Two subspecies differed age; for Peromyscus maniculatus bairdii was 18 days; P. m. gracilis, 24 days. Age and food consumption were better predictors condition, terms change with isolation, body