文章摘要
陈刚.勒氏笛鲷年龄、生长和生活史类型的研究[J].水产学报,1997,21(1):
勒氏笛鲷年龄、生长和生活史类型的研究
STUDIES ON AGE, GROWTH AND LIFE-HISTORY PATTERN OF LUTLANUS RUSSELLI BLEEKER
投稿时间:2014-05-10  修订日期:2014-05-10
DOI:
中文关键词: 勒氏笛鲷  年龄  生长  生活史类型  r-选择
英文关键词: Lutjanus russelli ,Age, Growth, Life-history pattern, R-selection
基金项目:
作者单位地址
陈刚 湛江水产学院养殖系 湛江水产学院养殖系
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中文摘要:
      采用胸鳍部位的鳞片作为研究湛江沿海勒氏笛鲷的年龄鉴定材料。鳞长( R) 和体 长( L) 的关系为L= 19. 815 9+ 63. 369 6R。用灰色动态生长模型, 一般VBGF 和特殊VBGF 都可表 达体长、体重和年龄的关系, 生长模型分别为 Lt 1= 474. 0- 342. 6e - 0. 236t , Wt 1= - 1 594. 4 1 656. 2e 0. 123t , Lt= 441. 8[ 1- e- 0. 319 1( t 0. 955 2) ] 1 0. 643 , Wt= 2 539. 7[ 1- e- 0. 31 9 1( t 0. 955 2) ] 3. 06 5 1 0. 643 , Lt= 469. 8[ 1- e- 0. 242 5( t 0. 376 2) ] ,Wt= 3 366. 6[ 1- e- 0. 242 5( t 0. 376 2) ] 3。 根据r- 选择和k- 选择的典型特征及渐近体长( L ] ) 、渐近体重( W] ) 、生长系数( K) 、瞬时自然死亡 率(M) 、初次生殖年龄( Tm) 、最大年龄( Tmax) 和种群繁殖力( PF) 等7 个生态学参数值, 可以判断勒氏 笛鲷偏向r- 选择。应用平衡产量模式计算改变瞬时捕捞死亡率( F) 和渔业补充年龄( tc) 时的产量 变化, 同样证实勒氏笛鲷偏向r- 选择。作为渔业管理对策, 勒氏笛鲷的捕捞年龄在3 龄以上, 捕捞 强度不超过1. 5。在人工饲养条件下, 养殖周期2~ 3 年。
英文摘要:
      The scale under pectoral f in is selected for the ag e determinat ion material of L utianus r ussell i in the lit toral w aters of Zhangjiang. The relat ionship betw een the leng th of the scale( R) and the body leng th ( L. mm) is L = 19. 815 9 + 63. 369 6R ( r = 0. 991 6) . The relat ionship betw een body length or body w eight (W. g ) and age can be described by the grey dynamic grow th model ( GDGM) and Von Bertalanffy grow th equat ion ( VBGF) . The grow th models are as follow s: Lt 1= 474. 0- 342. 6e - 0. 236t , Wt 1= - 1 594. 4 1 656. 2e - 0. 123t , 1 期 陈 刚: 勒氏笛鲷年龄、生长和生活史类型的研究 11 Lt= 441. 8[ 1- e- 0. 319 1( t 0. 955 2) ] 1 0. 643, Wt= 2 539. 7[ 1- e- 0. 319 1( t 0. 955 2) ] 3. 065 1 0. 643 , Lt= 469. 8[ 1- e - 0. 242 5( t 0. 376 2) ] , Wt= 3 366. 6[ 1- e - 0. 242 5( t 0. 376 2) ] 3 . According to the ty pical characterist ics of r and k select ion and the given values of seven ecolog ical parameters, namely, asymptotic body-length( L) , asymptot ic body-w eight ( W) , growth coeff icient ( k) , instantaneous natural mortality( M) , primary reproduct ive age ( T m) , max imum age ( Tmax ) and populat ion fecundity( PF) , it is concluded that the life-history pattern of L . r ussell i tends to r-select ion. Equilibrium yield model is applied to calculate the f ish y ield. When the instaneous fishing mortality( F) is changed, the yield curve has a w eaker peak at relat ively low value of F, and beyond the value of F, the yield inreases to a max imum value at t c= 1. 5years and then decreases greatly w ith raising t c. Analysis of yield curves also demonstrates that the life-history pat tern inclines to r-select ion. As a st rategy of fishery management , the harvest ing age can be decided above three years of age , the strength of f ishing can not be more than 1. 5. Under the condit ion of artificial raise, the cycle of cult ivat ion can be determined at tw o to three years of age.
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