大鳞鲃形态特征及其相关参数分析

Morphological Characteristics and Parameters Measurement of Barbus capito

为深入掌握大鳞鲃(Barbus capito)生物学特性,进一步为大鳞鲃的分类和种质鉴定提供依据,利用传统形态学方法和解剖学方法,观察和测量其外部形态特征、可量可数性状及内部组织结构特征。大鳞鲃外部形态特征:梭型,全身被覆圆鳞,背面银灰色,腹面银白色,头小,且扁而宽。全长(L_T)和体长(L_B)之间的关系模型为:L_B=0.884L_T-1.227 (R^2=0.994),体质量(W_B)和体长(L_B)之间的关系模型为:W_B=0.008 L_B^(3.158)(R^2=0.974)。内部组织结构特征:口裂中等大小,咽喉齿发达,食道粗短,无胃,肠道弯曲多。第5对鳃弓演变成咽喉齿,鳔1个,分2室。雌雄异体,性腺1个,左右对称分布。1对"矢耳石"呈树叶型,中间厚周围薄,左右对向排列。

To study the biological characteristics of Barbus capito and provide basic information for the taxonomy and species identification of B. capito, the external morphological characteristics, meristic and metric characteristics and internal tissue and organ B. capito are detected and measured using the traditional morphology method and anatomy method. The fish was spindle-shaped, covered with cycloid scale, and its body showed silver-gray back and silver-white abdomen. The head was small and flat. The correlation equation of total length(LT) and body length(LB) was: LB=0.884 LT-1.227(R2=0.994). The correlation equation of body weight(WB) and body length(WB) was: WB=0.008 LB3.158(R2=0.974). The mouth split was median size and the dens pharyngeal were developed. The esophagus was stubby, this fish had no stomach and the intestine was anfractuous. The 5 thgill arch was turned into the dens pharyngeal. There was 1 swim bladder which was bilocellate. Bisexualism with 1 gonad, and was left-right symmetric distribution. There was a pair of leafshaped otolith, it was middle-thick and circumference-thin, and was left and right alignment.