| 王继隆,刘伟,唐富江,战培荣,李培伦,王臣.2016.五大连池鳙的生长分析.动物学杂志,51(4):543-551. |
| 五大连池鳙的生长分析 |
| Analysis on the Growth of Bighead Carp (Aristichthys nobilis) in Wudalianchi Lake |
| 投稿时间：2015-04-23 修订日期：2016-05-07 |
| DOI：DOI: 10.13859/j.cjz.201604005 |
| 中文关键词: 五大连池 鳙 年龄 生长 |
| 英文关键词:Wudalianchi Lake Bighead carp (Aristichthys nobilis) Age Growth |
| 基金项目:公益性行业(农业)科研专项(No.201303056-5) |
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| 中文摘要: |
| 为了分析五大连池鳙的生长情况，本研究于2013和2014年在五大连池三池和二池随机采集223尾鳙样本，采用鳞片鉴定了其年龄，退算了鳙的体长、体重。同时采用Von Bertalanffy生长方程分析了五大连池鳙体长、体重的生长规律。结果显示，鳙渔获物的平均体长、体重分别为54.61cm和3280.53g。年龄由3+ ~ 8+共6个年龄组组成，以5+龄个体为主，占总数的50.67%。五大连池鳙体长、体重之间关系式为： （n=223, R=0.974）。体长、体重VBGF生长方程分别为： 和 。体长生长速度、加速度方程分别为： 和 。体重生长速度、加速度方程分别为： 和 鳙体长生长速度曲线无拐点，随着年龄的增加生长速度逐渐降低。体重的生长速度曲线具有拐点，拐点年龄为7.61龄，所对应的体长和体重分别为63.94cm和5012.82g。采用生长特征指数?对比分析了五大连池鳙和其他水域鳙的生长。对比分析结果表明五大连池鳙的生长较为缓慢，栖息环境的水温、饵料生物密度是影响鳙生长的重要因素主要因素。有效提高鳙生长速度的关键措施在于降低放养密度。 |
| 英文摘要: |
| To study the growth characters of bighead carp (Aristichthys nobilis) in Wudalianchi Lake, 223 individuals were sampled in 2013 and 2014 respectively. Age was determined through the scale annuli and body length and body weight were back-calculated (Table 2). Von Bertalanffy growth equation were fitted to analyses the growth of body length and body weight. Calculation of increment rate and growth indexes of body length of Aristichthys nobilis by Yin Mingcheng′s methods (1995).Statistic analysis of all data were taken by Microsoft excel 2003 and SPSS 19. Results showed the mean body length and body weight of the sample were 54.61cm and 3280.53g respectively. Age of the fishes was identified to six age classes (3+﹣8+ years old) and individuals of 5+ years old was dominated with frequency of 50.67% (Table 1).The relationship between body length and body weight could be expressed as: （n=223, R=0.974）(Fig. 1). The VBGF growth formula of Aristichthys nobilis in Wudalianchi Lake as follows: ； (Fig.2). Growth rate and acceleration growth rate equation of body length were and , respectively (Fig.3). Meanwhile the growth rate and acceleration growth rate equation of body weight were and ,respectively (Fig. 4). Growth rate curve of body length has no inflexion(Fig. 4), i.e. growth rate of body length declined as age increased. Growth rate curve of body weight has an inflexion, and the age, body length and body weight corresponding to the inflexion are 7.61, 63.94cm and 5012.82g respectively. The growth parameter ? of Aristichthys nobilis were compared between different areas. Compared with the populations in other waters, the population in Wudalianchi Lake growed slowly (Table 4). The growth of Aristichthys nobilis should be mainly affected by both biotic and abiotic factors such as water temperature, food organism density. The key measure to effectively improve the growth rate of Aristichthys nobilis is to reduce stocking density. |
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