摘要
解剖和测量了大银鱼 Ｐｒｏｔｏｓａｌａｎｘ ｈｙａｌｏｃｒａｎｉｕｓ Ａｂｂｏｔｔ 太湖新银鱼Ｎｅｏｓａｌａｎｘ ｔａｉｈｕｅｎｓｉｓ Ｃｈｅｎ的鳃弓骨骼结构、第一鳃弓长、鳃耙间距、口径、口宽。根据实测数据与银鱼的个体生长进行回归运算，分析了两种银鱼的口器生长特性，结果表明：１． 第一鳃弓长与体长的相关方程：大银鱼Ｙ＝ ３．１２＋ ７．９２Ｘ＋０．７９Ｘ２－ ０．０４Ｘ３（ｍ ｍ ）［ｒ＝ ０．９９２ ８，Ｐ＜ ０．０１］；太湖新银鱼Ｙ＝ １５．１４－ ３．０４Ｘ＋ ５．６３Ｘ２－ ０．５７Ｘ３ （ｍ ｍ ）［ｒ＝ ０．９８６ ８，Ｐ＜ ０．０１］（Ｙ——体长，Ｘ——第一鳃弓长）。２． 口径、口宽与体长的相关方程：大银鱼口宽Ｙ＝ ０．０４８Ｘ＋ ０．１３３（ｍ ｍ ）［ｒ＝ ０．９９３ ７，Ｐ＜ ０．０５］，太湖新银鱼口宽Ｙ＝ ２０．９１－ ７．４１Ｘ＋ ４．１１Ｘ２＋ ０．９０Ｘ３（ｍ ｍ ）［ｒ＝ ０．９１０ ７，Ｐ＜ ０．０５］；大银鱼口径Ｙ＝ ０．１３０ ７Ｘ－ ０．８５０ ３（ｍ ｍ ）［ｒ＝ ０．９８７ ９，Ｐ＜ ０．０５］；太湖新银鱼口径Ｙ＝ ５０．８６－ ３４．００Ｘ＋ １０．６５Ｘ２－ ０．８０Ｘ３（ｍ ｍ ）［ｒ＝ ０．９５９ ９，Ｐ＜ ０．０５?
Comparative anatomizing and measure had been carried out to the structure of branchial arch,crevice of gill raker,mouth calibre, and mouth width. It concluded, according to measurement data, by analyzing the regression of the body length and mouth bio characters data,that 1. The first branchial arch length and body length have relation to regression equation: Protosalanx hyalocranius Abbott Y=3.12+7.92X+7.79X 2-0.04X 3 (mm)[ r=0 992 8,P<0 01]; Neosalanx taihuensis Chen Y=15.14-3.04X+5.63X 2-0.57X 3 (mm)[ r=0 986 8,P<0 01 ]. 2.The mouth calibre, mouth width and body length have relation to regression equation: Proosalanx hyalocranius Abbott (mouth width) Y=0.048X+0.133 (mm)[ r=0 993 7,P<0 05 ],(mouth calibre) Y=0.130 7X-0.850 3 (mm)[ r=0 987 9,P<0 05];Neosalanx taihuensis Chen (mouth width) Y=20.91-7.41X+4.11X 2+0.90X 3 (mm)[ r=0 910 7,P<0 05] ,(mouth calibre) Y=50.86-34.00X+10.65X 2-0.80X 3 (mm)[ r=0 959 9,P<0 05 ],(mouth calibre) Y=50.86-34.00X+10.65X 2-0.80X 3 (mm)[ r=0 959 9,P<0 05 ]. 3.The crevice of gill raker and body length have relation to regression equation: Proosalanx hyalocranius Abbott Y=44.00-0.11X+0.11X 2+0.11X 3 (mm)[ r=0 896 6,P<0 01];Neosalanx taihuensis Chen Y=37.67+0.90X+0.45X 2-0.78X 3 (mm)[ r=0 878 7,P<0 05]. 4. The forage size of icefish: Proosalanx hyalocranius Abbott is 0.287～123.6 mm 2, Neosalanx taihuensis Chen is 0.152～10.0 mm 2.
出处
《湛江海洋大学学报》
1999年第2期30-33,共4页
Journal of Zhanjiang Ocean University
基金
农业部重点攻关项目
关键词
大银鱼
太湖新银鱼
口器
结构
生长
Proosalanx hyalocranius Abbott Neosalanx taihuensis Chen Mouth bio character Growth
