水生生物学报2018，Vol.42Issue(1)：138-147,10.DOI:10.7541/2018.018
大鳍异(鮡)年龄与生长
AGE AND GROWTH OF CRETEUCHILOGLANIS MACROPTERUS
摘要
Abstract
To study age and growth of Creteuchiloglanis macropterus, 230 specimens were collected from the Nu River, Binlang River and Longchuan River from November 2013 to September 2014. Simplified decalcified histologi-cal sections of pectoral fin spines were used to estimate the age. Reader agreement rate of ages between pectoral fin spines and vertebra was 86.36％. Pectoral fin spines could be used for estimating the age efficiently. There were nine age groups of collected samples, and most individuals were 1—3 year-old accounting for about 65％ of total samples. The relationship between the radius of pectoral fin spines (RC) and total length (L) was L=2.0787·RC0.6273 (R2=0.8866, n=180). There was no significant difference between measured body length and back-calculated body length at each age group (χ2=0.776, df=8, P=0.999). Meanwhile, the relationship between total length (L) and body weight (W) showed no significant difference between females and males, and it expressed as W=1E–4L2.4807 (R2=0.8189, n=180). Von Bertalan-ffy growth function was Lt=377.015·[1–e–0.0491(t+4.0195)], Wt=246.134·[1–e–0.0491(t+4.0195)]2.4807. In addition, the age at the in-flection point of body weight growth was 14.48 years, in which total length and body weight were 225.00 mm and 68.40 g, respectively. C. macropterus was allometric growth and individual miniaturization. Its resources were heavy damaged. We should take action to strictly ban unreasonable catching in the future and strengthen scientific research on C. macropterus to preserve the resources.关键词
大鳍异(鮡)/胸鳍棘/年龄/生长Key words
Creteuchiloglanis macropterus/Pectoral fin spine/Age/Growth分类
农业科技引用本文复制引用
黄静,黄自豪,危起伟,王志坚..大鳍异(鮡)年龄与生长[J].水生生物学报,2018,42(1):138-147,10.基金项目
农业部淡水生物多样性保护重点实验室开放课题 (LFBC0812)资助 [Supported by the Key Lab of Freshwater Biodiversity Conservation Ministry of Agriculture (LFBC0812)] （LFBC0812）
