摘要
从引进的无特定病原(SPF)凡纳滨对虾(Litopenaeus vannamei)亲虾生产的子代中挑选出生长快、体格健壮等性状良好的个体作为亲本建立16个第一代选育家系,并经223d饲养和感染实验从中挑选出抗病力强、生长快的家系建立21个第二代家系.抗WSSV实验的结果表明:第一代选育各家系经感染WSSV(投喂)后的成活率在0～61.5%之间,平均成活率为30.0%±16.5%;第二代选育家系成活率在14.5%～70.0%之间,平均成活率为37.3%±15.2%,比第一代提高24.3%.21个第二代选育家系经28 d的生长实验显示:21个选育家系体长特定生长率在0.001 5～0.014 2之间,体重特定生长率在0.005 3～0.027 9之间;两代选育家系抗病与生长的结果表明:抗病较强的家系生长快,抗病差的家系生长慢,但抗病最强或生长最快的家系,其对应的生长或抗病性能则不理想.
Sixteen fast-growing and robust pairs of imported specific pathogen-free Litopenaeus vannamei were selected as first-generation breeding families. After 223 days of breeding and infection tests, 21 fast-growing pairs with strong disease resistance were selected as second-generation breeding families. White spot syndrome virus （WSSV） challenge tests showed that the survival rates after the oral infection of the first-generation breeding fami- lies were 0 ~ 61. 5% （ mean： 30.0% ＋ 16. 5% ） and those of the second-generation breeding families were 14.5% -70.0% （mean： 37.3% ±15.2% ） , 24.3% higher than those of the first-generation breeding families. After rearing for 28 days, the body length specific growth rates of the 21 selected second-generation breeding fami- lies were 0. 001 5 ~ 0. 014 2, and the specific body weight increases were 0. 005 3 - 0. 027 9. The regression of the survival rate （Y） and the body length specific growth rate （X,） was established as Y = - 23. 484 X~ ＋ 0. 485 9 （r =0. 558 ）, and the regression of the survival rate （Y） and the body weight specific growth rate （X2 ） was estab- lished as Y= -13. 921 X2 ＋0. 541 2（ r = 0. 557）. The resistance to WSSV and the growth of two generations of breeding families indicated that the growth rates of more resistant families were much faster than more susceptible families with a slower growth rate. However, the most resistant or fastest growing families performed poorly in growth rates or disease resistance.
出处
《台湾海峡》
CAS
CSCD
北大核心
2011年第3期412-418,共7页
Journal of Oceanography In Taiwan Strait
基金
国家863计划资助项目(2002AA603031)
关键词
海洋生物学
凡纳滨对虾
家系选育
生长
抗WSSV
marine biology
Litopenaeus vannamei
breeding family selection
growth
WSSV resistance
