山地麻蜥主要贮能部位水分含量和能值的年变化  

Annual variation of water content and energy value of the major energy reserves in adult lizards (Eremias brenchleyi)

作　　者：许雪峰[1] 吴义莲[1] 

机构地区：[1]滁州师范专科学校化学生物系,滁州239012

出　　处：《动物学报》2003年第2期191-197,共7页ACTA ZOOLOGICA SINICA

基　　金：安徽省教育厅自然科学基金资助项目~~

摘　　要：研究了安徽宿州山地麻蜥主要贮能部位水分含量和能值的年变化。蜥蜴分别于 2 0 0 1年 9～ 11月和 2 0 0 2年 3～ 8月逐月捕回 ,经测量、称重后解剖分离为躯干 (包括尾 )、肝脏和腹脂肪体三组分。所有样品 6 5℃恒温干燥至恒重 ,用索氏脂肪提取器测定脂肪含量 ,微电脑热量计测定能值。本研究结果显示 :雄体躯干、肝脏水分含量显著高于雌体 ,躯干、肝脏水分含量的月间差异显著 ;雄体躯干、脱脂躯干能值显著高于雌体 ,躯干、脱脂躯干能值的月间差异显著 ;雄体肝脏能值、脱脂肝脏能值以及腹脂肪体能值显著低于雌体 ,肝脏能值、脱脂肝脏能值以及腹脂肪体能值的月间差异显著。上述结果表明 ,山地麻蜥躯干、肝脏以及腹脂肪体能值的年变化与繁殖和冬眠关系密切 ,繁殖期雄体适度贮能有利于提高运动的敏捷性 ;雌体适度贮能有利于增加繁殖输出 。Annual variation of water content and energy value of the major energ y reserves were studied in adult lizard, Eremias brenchleyi , from a populati on in Suzhou, Anhui, eastern China. Monthly samples of the adult lizards were c olle cted during September to November 2001 and March to August 2002. The lizards wer e brought to our laboratory in Chuzhou Normal College. The lizards were killed b y freezing to -15℃, and then separated into carcasses (including tails), liver s and abdominal fat bodies. The three components were oven dried to constant mas s at 65℃, weighed and preserved frozen for later determination of composition. We extracted non polar lipids from dried samples (except abdominal fat bodies) in a Soxhlet apparatus for a minimum of 5 5 h using absolute ether as solvent. Th e amount of lipids in a simple was determined by subtracting the lipid free dry mass from total sample dry mass. We determined energy value of dried samples inc luding carcasses, livers, abdominal fat bodies and non polar lipids using an ad i abatic bomb calorimeter. Males and females differed in water contents of carcass and liver. Water contents of carcass and liver were all higher in males than in females. There were significant monthly changes in water contents and energy va lues of carcass (including lean carcass) and liver in both males and females. Si gnificant monthly changes in energy value s of abdominal fat bodies were also found in both sexes. Energy values of carcas s (including lean carcass) and liver were higher in males than in females, but t hose of liver lower in males than in females. Our results indicated that annual variations in the major energy reserves were correlated with the reproduction an d winter hibernation. Proper energy storage in breeding season of male would be help for to strengthen the ability of quick movement, while, that of female woul d be increase reproductive output and improve survival and fitness .

关 键 词：山地麻蜥 贮能部位 水分含量 能值 年变化 躯干 肝脏 腹脂肪体 

分 类 号：Q41[生物学—生理学]