鳍和鳔在鱼类沉浮行为中的作用  

THE EFFECT OF THE BLADDER AND FINS ON THE SINKING AND SWIMMING BEHAVIOR OF CRUSIAN CARP (CARASSIUS AURATUS AURATUS)

作　　者：赛林霖[1] 赛道建[1] 尹玲[1] 苗秀莲[1] 梁春明[1] 

机构地区：[1]山东师范大学生命科学学院,济南250014

出　　处：《山东师范大学学报（自然科学版）》2006年第1期124-126,共3页Journal of Shandong Normal University(Natural Science)

基　　金：国家自然科学基金项目(69976019)

摘　　要：通过不同量充气、放气结合去鳍研究鲫鱼行为的结果表明,鱼依靠尾鳍摆动和胸鳍摆动角度改变使鱼体产生推动力和前后不同的流体升力,完成沉浮游泳行为.水层变化改变了水压使鳔内气体体积改变,反射性地引起鳔分泌气体或放气,下潜充气,上浮放气,到达新水层后,通过鳍的摆动克服鳔内气体体积变化造成的鱼体重力和鳔内气体浮力作用的比例变化,直至鳔内气体恢复到原有体积,鱼体处于中性浮力状态才减少运动能耗停留在新水层.The effect of the bladders and the fins on the behaviour of crusian carp （ Carassius auratus auratus ）was studied by adding or reducing the gas volume in the swim - bladder and getting rid of the fin with injector. The result shows that the swimming of fishes produce the hydrostatic power with the swinging of the fin. When it swims to different water layers, the gas volume of bladder varies as being changed water pressure with the power of the body wall. The change reflecting arouses bladder＇s secreting and eliminating air. When it goes into new water layer,the oscillating of fins balances the gravity of fish and the buoyancy of bladder. It inflates when sinking and deflates when ascending till the gas volume of bladder reinstates its former state, so the fish is the neuter buoyancy and stay any water layer without swimming.

关 键 词：鳍 鳔 抽气 充气 

分 类 号：Q959.4[生物学—动物学]