大宁河两种小型鱼类个体和器官代谢率的比较  

Comparison of Metabolic Rates of Individuals and Organs of Two Small Fishes in Daning River

作　　者：朱晓玲 李倩 朱艳秋 熊惟 张盼 胥愿 罗毅平 ZHU Xiaoling;LI Qian;ZHU Yanqiu;XIONG Wei;ZHANG Pan;XU Yuan;LUO Yiping(Key Laboratory of Freshwater Fish Reproduction and Development,Ministry of Education,School of Life Science,Southwest University,Chongqing 400715,China)

机构地区：[1]西南大学生命科学学院淡水鱼类资源与生殖发育教育部重点实验室,重庆400715

出　　处：《重庆师范大学学报（自然科学版）》2021年第4期30-35,共6页Journal of Chongqing Normal University:Natural Science

基　　金：国家自然科学基金(No.32070438)。

摘　　要：【目的】考察三峡库区两种小型鲤科(Cyprinidae)鱼类的个体和器官代谢率。【方法】对大宁河水域分布的红尾副鳅(Paracobitis variegatus)和云南盘鮈(Discogobio yunnanensis)的体质量、器官质量、个体代谢率和器官代谢率进行测定和比较。【结果】在校正体质量后,红尾副鳅在个体静止代谢率、心质量、嗅球质量和肝代谢率方面均低于云南盘鮈,且差异都具有统计学意义(p<0.05);但红尾副鳅的脑代谢率与云南盘鮈的脑代谢率相比有统计学意义上的升高(p<0.05)。【结论】红尾副鳅具有中高代谢水平,云南盘鮈具有极高代谢水平,两种鱼类代谢水平的差异可能与它们食性及身体器官的差异有关。[Purposes]To investigate the individual and organ metabolic rates of two small Cyprinidae fishes in the Three Gorges Reservoir area.[Methods]The body mass,organ mass,individual and organ metabolic rate of Paracobitis variegatus and Discogobio yunnanensis in Daning River were measured and compared.[Findings]After correcting body mass,the resting metabolic rate,heart mass,olfactory bulb mass and liver metabolic rate of P.variegatus were significantly lower than those of D.yunnanensis(p<0.05);However,the brain metabolic rate of P.variegatus was significantly higher than that of D.yunnanensis(p<0.05).[Conclusions]The metabolic level of P.variegatus was at medium to high level,while that of D.yunnanensis was very high.The difference in metabolic levels between the two species may be related to the differences in their feeding habits and organs.

关 键 词：个体静止代谢率 器官代谢率 鲤科鱼类 

分 类 号：Q175[生物学—水生生物学]