2种规格短尾高原鳅幼鱼形态性状与体质量的相关通径分析  

Correlation Path Analysis of Morphological Characters and Body Weight of Two Specifications Triplophysa brevicau

作　　者：何文佳 刘孟君 刘艳超 刘海平 扎西拉姆 刘飞 杨欣兰 HE Wenjia;LIU Mengjun;LIU Yanchao;LIU Haiping;Zhaxilamu;LIU Fei;YANG Xinlan(Institute of Fisheries Science,Tibet Academy of Agricultural and Animal Husbandry Sciences,Tibet Lhasa 850002,China;Institute of Animal Husbandry and Veterinary Medicine,Tibet Academy of Agricultural and Animal Husbandry Sciences,Tibet Lhasa 850000,China;Institute of Plateau Biology in Tibet,Tibet Lhasa 850000,China)

机构地区：[1]西藏自治区农牧科学院水产科学研究所,西藏拉萨850002 [2]西藏自治区农牧科学院畜牧兽医研究所,西藏拉萨850000 [3]西藏自治区高原生物研究所,西藏拉萨850000

出　　处：《西藏农业科技》2021年第4期22-28,共7页Tibet Journal of Agricultural Sciences

摘　　要：为研究短尾高原鳅幼鱼形态性状对体质量的影响作用,于2020年在西藏自治区曲松县扎布河采集短尾高原鳅幼鱼样品,测定了体质量(Y)和全长(X1)、体长(X2)、头长(X3)、躯干长(X4)、吻长(X5)、眼径(X6)、眼间距(X7)、眼后头长(X8)、体高(X9)、体宽(X10)、尾柄长(X11)共11个形态性状。采用相关分析、逐步多元回归分析和通径分析,构建了小规格短尾高原鳅回归方程:Y=-1.007+0.018X2+0.100X9+0.06X10;大规格短尾高原鳅回归方程:Y=-1.260+0.019X1+0.124X9+0.129X7。通径分析得出:体长对小规格短尾高原鳅体质量的决定作用最大,全长对大规格短尾高原鳅体质量的决定作用最大。本研究阐明了短尾高原鳅形态性状与体质量之间的相关关系,为短尾高原鳅的选育测量指标提供了科学依据,同时也为短尾高原鳅的生物学研究提供了相关资料。In order to study the effect of morphological characters on body weight of Triplophysa brevicau.In 2020,samples of Triplophysa brevicau were collected in the Chayu River,Qusong County,Tibet,and the body weight(Y),total length(X1),body length(X2),head length(X3),trunk length(X4),snout length(X5),eye diameter(X6),eye distance(X7),head length behind eyes(X8),body height(X9),body width(X10),caudal stalk length(X11)11 morphological traits were measured.Using correlation analysis,stepwise multiple regression analysis,and path analysis,the regression equation of the small-sized short-tailed Triplophysa brevicau was constructed as:Y=-1.007+0.018 X2+0.100 X9+0.06 X10;the regression equation of the large-sized short-tailed Triplophysa brevicau was:Y=-1.260+0.019 X1+0.124 X9+0.129 X7.Path analysis showed that the body length has the greatest decisive effect on the mass of the small-sized short-tailed Triplophysa brevicau,and the overall length has the greatest decisive effect on the mass of the large-sized short-tailed Triplophysa brevicau.This study clarified that the correlation between the morphological traits and body weight of Triplophysa brevicau,and provided scientific basis for breeding and measurement of Triplophysa brevicau.At the same time,it also provided relevant data for the biological research of Triplophysa brevicau.

关 键 词：短尾高原鳅 形态性状特征 回归分析 通径分析 

分 类 号：Q959.468[生物学—动物学]