利用超声波技术鉴定幼龄鲟鱼的性别  

Determination of Sex and Maturity by Using Ultrasonography in Large-scale Cultivation of Young Sturgeon

作　　者：王斌[1,2] 于冬梅[3] 师伟 夏永涛[1,2] 张大海 辛成明 孟祥龙 陈金平[3] 

机构地区：[1]中国水产科学研究院,北京100039 [2]杭州千岛湖鲟龙科技开发有限公司,杭州311700 [3]华南濒危动物研究所,广州510260

出　　处：《动物学杂志》2009年第2期57-63,共7页Chinese Journal of Zoology

基　　金：中国水产科学研究院院部专项基金项目(2008C010);广东省科学院人才基金项目(粤科优[2008]02)

摘　　要：2006年2月至2008年3月,利用超声波鉴定技术对20 553尾2龄或3龄鲟鱼的性别及成熟度进行了检测,同时对检测并确定性别的鲟鱼随机取样解剖,验证超声波检测结果的准确率,同时追踪检测西伯利亚鲟(Acipenser baerii)的性腺发育过程,获得不同发育时期性腺的超声波图像。超声波性别鉴定技术的准确率与养殖鲟鱼的种类、性腺发育阶段密切相关,本研究结果显示,2龄或3龄西伯利亚鲟的检测准确率为92.0%～100%,2龄俄罗斯鲟(A.gueldenstaedtii)准确率为83.0%,3龄史氏鲟(A.schrenckii)准确率为58.0%;同时,根据超声波图像可较好地了解性腺成熟度,本次检测发现养殖的2龄或3龄西伯利亚鲟性腺发育一般处于Ⅱ～Ⅲ期。超声波鉴定是一项能有效鉴定鲟鱼性别的技术,值得推广。Ultrasonography was performed to determinate the sex and maturity of sturgeons. Sex differences were shown by the echogenicity and the morphology of ovaries and testes. Ultrasonic images of Acipenser boer at different developmental stages were also collected. A total of 20 553 sturgeon individuals which were 2 or 3 years old were examined using ultrasound scanning from February, 2006 to March, 2008. Results of ultrasonography were further confirmed by necropsy with random sampling. Ultrasonographic method was proved to have 92.00% - 100.00% accuracy rate in sex determination of 2 or 3 years old A. baeri, and 83.00% accuracy of 2 years old A. gueldenstaedtii, but only 58.00% accuracy of 3 years old A. schrenkii. Gonads of 2 or 3 years old A. baer/ were found at Ⅱ-Ⅲ stages based on the ultrasonic images. Therefore, ultrasonography is a non-invasive method which is worth to apply in sex determination of young sturgeon.

关 键 词：超声波鉴定技术 鲟鱼 性别鉴定 

分 类 号：S917.4[农业科学—水产科学]