中华白海豚骨骼的描述

为详细了解中华白海豚骨骼的特征,将收藏于广东珠江口中华白海豚国家级自然保护区管理局的1副中华白海豚标本,经过解剖→取骨→煮制→酒精脱脂→汽油脱脂→漂白→串制骨骼等步骤制取骨骼标本,对其骨骼系统作较为全面的测量,并对测量资料进行相关统计分析。结果显示,中华白海豚V型骨最大高、最大宽和最大厚等尺度均呈现先逐渐变大,后逐渐变小的特点;胸椎质量与椎体长之间存在明显的二次函数关系(R2=0.864 1);尾椎质量与椎体高之间、质量与椎体长之间均存在明显的幂函数关系(R2=0.964 6,R2=0.912 8);尾椎质量与椎体宽度之间存在明显的指数关系(R2=0.970 9)。二次函数能很好地拟合V型骨质量与最大高之间的数学关系(R2=0.754 6);左、右肋骨完全对称;左、右胸肋完全对称。

Characterization of skeleton of Sousa chinensis

Sousa chinensis(Osbeck,1765)is a species of Sousa genus,which is found in the South China Sea,the East China Sea and the Yellow Sea.Some scientists have done much systematic study on skull and body external morphology.To deeply study the skeleton of Sousa chinensis, in this paper,a Sousa chinensis sample from Guangdong Pearl River Estuary Chinese White Dolphin National Nature Reserve was anatomized,and a set of skeleton sample was obtained,which was measured overall.The order is anatomy-taking bone-cooked-skim with alcohol-skim with gasoline-string together.The results showed that the maximum height,the maximum width and the maximum thickness scales of V type skeleton of Sousa chinensis became larger gradually first,then became smaller gradually,and the significantly quadratic function(R²=0.864 1)was found between the weight and length of lumbar spine.The significantly power functions(R²=0.964 6,R²=0.912 8)were found between the weight and height and between the weight and length of caudal vertebra.The significantly exponential function(R²=0.970 9)was found between the weight and width of caudal vertebra.The quadratic function could be well used to fit the correlation between the weight and maximum height of the V type bone(R²=0.754 6).The left rib and right rib were symmetrical.