论文部分内容阅读
2003年秋季在新疆赛里木湖对贝加尔凹目白鲑进行了人工繁殖试验。期间共采集贝加尔凹目白鲑亲鱼4343kg。用于采卵的雌性个体282尾,雄性个体1258尾。共采集受精卵789.7万粒;4.5～8.2℃水温条件下受精卵25d开始出现眼点,受精卵的发眼率为26.5%,发眼卵的出苗率为28.5%。在2.3～8.2℃孵化水温条件下,100d后出苗,孵化积温为499.8℃·日,共繁殖鱼苗59.7万尾。还对贝加尔凹目白鲑人工繁殖中的有关技术问题进行了小结。
In the autumn of 2003, the artificial breeding experiment was carried out on the Baikal salmon in the Lake Limim in Xinjiang. During the collection of Baikal concave whitefish whitefish 4343kg. 282 female individuals for oviposition, and 1258 male individuals. A total of 7.897 million fertilized eggs were collected. At the water temperature of 4.5-8.2 ℃, the eyed eggs began to appear on the 25th day. The fertilized eggs showed 26.5% of eyes and 28.5% of eyes. Under the hatching water temperature of 2.3 ~ 8.2 ℃, 100 days after emergence, hatching accumulated temperature was 499.8 ℃ · day, a total of 597,000 fish fry. The technical issues related to artificial reproduction of whitefish in Baikal were also summarized.