中国水产科学2012，Vol.19Issue(2)：229-236,8.DOI:10.3724/SP.J.1118.2012.00229
广西龟石水库大眼鳜的年龄与生长特征
Age and growth of bigeye mandarinfish (Siniperca kneri) in Guishi Reservoir, Guangxi Province
摘要
Abstract
We evaluated the age and growth of bigeye mandarinfish (Siniperca kneri) in the Guishi reservoir Guangxi Province using scales, opercula, and anal-fin spines. We collected 688 specimens between September 2008 to August 2009. The interpretation of age based on scale readings was reliable. Annual rings were formed primarily by the pattern of sparseness-denseness and the cut of the scales. The pattern of sparseness-denseness was visible in the prezone region whereas the cut pattern was present on the rear-side region. Annuli formation took place primarily between April and June each year, likely related to the timing of reproduction. The estimated ages ranged between 0 and 4 years old, but were dominated by the younger age classes (age 0 and 1). The body-length of specimens ranged from 11.25 to 40.50 cm, with the majority (70.49%) being 15-21 cm. Body weight ranged from 29.1 to 2 257.8 g, but most fish (62.12%) were between 100-300 g. The body length-scale radius relationship was L=24.47R+4.021 2 (r=0.9819, n=623). The body length-weight relationship was W=0.017×L3.087 6 (r=0.979 1, n=688). The b value was close to 3, therefore, S. kneri was considered to be isometric. The growth equations for body length and weight were Lt=59.04[1-e-0.269 2(t+0.251 9)] and Wt=5 196.88[1-e-°.2691(t+0.263 8)]3.087 6, respectively. The inflexion age on the growth rate curve for weight was 3.93, and corresponded to a body-length of 39.89 cm and weight of 1 554.81g. Our data suggest that the bigeye mandarinfish population had been overex-ploited. To protect the population and allow for sustainable utilization, we suggest only fish greater than 990 g (age 3) should be harvested.关键词
大眼鳜/年龄/生长/龟石水库Key words
Siniperca kneri/ age/ growth/ Guishi Reservoir分类
农业科技引用本文复制引用
刘凌志,李桂峰,陈石娟,卢薛,罗渡,王贺..广西龟石水库大眼鳜的年龄与生长特征[J].中国水产科学,2012,19(2):229-236,8.基金项目
广东省科技计划项目(2008A020100003) （2008A020100003）
广东省科技计划项目(2007A020300001) （2007A020300001）
广东省海洋与渔业局科技计划项目(200601G02). （200601G02）
