灰海豹幼崽在饥饿状态下的体重减轻及分解代谢适应情况。

Weight loss and catabolic adaptations to starvation in grey seal pups.

作者信息

Oritsland N A, Påsche A J, Markussen N H, Ronald K

出版信息

Comp Biochem Physiol A Comp Physiol. 1985;82(4):931-3. doi: 10.1016/0300-9629(85)90507-9.

Abstract

Five grey seal pups lost from 18 to 32% of their initial body weight during a 21 day starvation period. Blubber fat mass density was 0.93 +/- 0.03 g/cm3. A considerable loss of blubber fat was recorded, but analysis of the weight loss and body size data indicated that blubber fat was retained for thermoregulatory reasons, particularly in the lean, smaller seals. It is possible that phocid seals during periods of negative energy balance have a higher rate of protein catabolism than normal for terrestrial mammals.

摘要

在为期21天的饥饿期内，5只灰海豹幼崽体重减轻了初始体重的18%至32%。鲸脂脂肪质量密度为0.93±0.03克/立方厘米。记录到鲸脂脂肪有相当程度的减少，但对体重减轻和身体大小数据的分析表明，出于体温调节的原因，鲸脂脂肪得以保留，尤其是在较瘦、体型较小的海豹身上。在能量负平衡期间，鳍脚类海豹的蛋白质分解代谢率可能高于陆生哺乳动物的正常水平。