活动范围对青鳉鱼(Oryzias latipes)运动模式的影响  

THE INFLUENCE OF ACTIVITY RANGE ON THE MOVEMENT PATTERNS OF ORYZIAS LATIPES

作　　者：龚晓斌 李奇骏 张逸涛 陈云泽 赵波 赵姗姗 GONG Xiao-Bin;LI Qi-Jun;ZHANG Yi-Tao;CHEN Yun-Ze;ZHAO Bo;ZHAO Shan-Shan(Zhejiang Ocean University,Zhoushan 316022,China;Ocean College,Zhejiang University,Zhoushan 316021,China)

机构地区：[1]浙江海洋大学,浙江舟山316022 [2]浙江大学海洋学院,浙江舟山316021

出　　处：《海洋与湖沼》2024年第6期1569-1577,共9页Oceanologia Et Limnologia Sinica

基　　金：浙江海洋大学2024年度校级大学生科研创新计划项目,2024-A013号;浙江海洋大学人才引进科研基金项目,JX6311032623号。

摘　　要：重尾分布现象广泛存在于自然界的各种生物运动模式之中,重尾分布现象会随环境的变化而变化。鱼类为适应生存环境,往往会选择更加高效的个体运动模式。以青鳉鱼(Oryzias latipes)为研究对象,在相同浅水条件(5 cm)下,控制其活动范围,探究青鳉鱼在不同水域面积(1.0 m×1.0 m、0.6 m×0.6 m、0.4 m×0.4 m、0.2 m×0.2 m以及0.1 m×0.1 m)条件下的运动模式。利用MATLAB软件将青鳉鱼的运动轨迹转换为具体数据,通过移动速度、移动加速度、单步步长和曲率半径4个方向对青鳉鱼的运动模式进行分析,并采用对数正态分布函数对实验数据进行拟合。研究结果显示,在较小活动范围中(0.1 m×0.1 m),青鳉鱼运动模式中重尾分布现象会被抑制,并且抑制程度与活动范围的大小有直接关系,具体表现在移动速度、移动加速度、单步步长和曲率半径取值的随机性会随活动范围的缩小而降低。该研究将为解释鱼类行为提供新视角,为探究活动范围对鱼类运动模式的影响奠定基础。Heavy-tail distribution widely exists in various biological movement patterns in the nature,and varies with the environmental diversity.To adapt to the living environment,fish often choose more efficient movement patterns.Using fish Oryzias latipes as the research subject,its movement patterns were studied indoor by filming at water depth of 5 cm in different ranges(1.0 m×1.0 m,0.6 m×0.6 m,0.4 m×0.4 m,0.2 m×0.2 m,and 0.1 m×0.1 m).The movement tracks of O.latipes were converted into concrete data using MATLAB software,and the movement pattern of O.latipes was analyzed in movement speed,acceleration,run length and radius of curvature.The lognormal distribution was used for fitting the probability density values of the movement data.Results show that the heavy-tail distribution was inhibited in the movement pattern of O.latipes in the smaller range,and the degree of inhibition was directly related to the size of the range,specifically,the randomness of all the data decreased with the reduction of activity range.This study provided a new perspective for understanding fish behavior and exploring the impact of activity range on fish movement behavior.

关 键 词：重尾分布 运动模式 青鳉鱼 活动范围 对数正态分布 

分 类 号：Q955[生物学—动物学] S965[农业科学—水产养殖]