山地麻蜥继饥饿后的补偿生长

动物继饥饿后一段时间后恢复喂食,在恢复生长阶段中常出现高于正常生长速度的补偿生长现象.有关脊椎动物补偿增长的研究主要集中在畜禽类、哺乳类和鱼类(Wilson et al.,1960;Plavnik et al.,1985;Drew et al.,1975;Pitts,1986;Kim et al.,1995),并且已在一些经济动物的饲养中利用补偿增长效应而提高经济效益.爬行动物是否存在补偿生长的现象迄今不明.本研究以山地麻蜥(Eremias breuchleyi)作为实验对象,研究其继饥饿后的补偿生长,预期为揭示爬行动物饥饿胁迫条件下的生长对策提供基础资料.

COMPENSATORY GROWTH IN THE ADULT LACERTID LIZARD (EREMIAS BREUCHLEYI) FOLLOWING STARVATION

An experiment on compensatory growth in lacertid lizards from a population in Suzhou, Anhui, eastern China, after different periods of starvation, was conducted from May to June and September to October 2001. All lizards used in this study were adult males. The experiment lasted for 24 days for each test group. Group C, S3, S6, S9 were deprived of food for 0 (control), 3, 6 and 9 days, respectively. Then each group was fed for the rest of the experimental period. There were significant differences in food intake and mass change among the experimental groups during the course of weight recovery. S9 had higher food intake and mass change than S3 and group C. There were no obvious differences in the apparent digestive coefficient (ADC) or assimilation efficiency (AE) among experimental groups. The results indicate that there was a compensatory effect in weight recovery following starvation, and that the compensatory effect mainly resulted from significant increase in feeding intensity during weight recovery.