Lifetime patterns in adult female mass, reproduction, and offspring mass in semidomestic reindeer (Rangifer tarandus tarandus)

摘要: The objective of our investigation was to examine relationships between lifetime patterns female mass, calving incidence, and offspring mass in semidomestic reindeer (Rangifer tarandus tarandus). analyses were made on data recorded from 1986 1997 the herding district Ruvhten Sijte Sweden. A rearing a calf shown weigh 3.1 ± 0.3 kg (mean SE) less winter than not calf. difference incidence females previous year those small, but there tendency for old have decreased if they had reared year. average percentage adult 73%. Calf masses affected by both mother's her age. regression coefficient autumn 0.26 0.02. Mothers aged 2–4 years calves that weighed olde...