中国水产科学2016，Vol.23Issue(4)：759-770,12.DOI:10.3724/SP.J.1118.2016.15415
川陕哲罗鲑个体的早期发育观察
Early development ofHucho bleekeri Kimura
摘要
Abstract
Hucho bleekeri Kimura early development of the whole process was investigated. According to the ex-terior appearance and typical characteristics of the embryo, the process ofH. bleekeri embryonic development was defined into 25 minor periods and described in detail. The result showed that the total accumulated temperature was 228.31℃·d at an average water temperature 10.2℃ from fertilization to hatching, the fertilized eggs hatching lasted 549 h. The mean total length of newly hatched larvae was (11.62±1.00) mm, the mean body weight of larvae was (0.0254±0.0016) g, the yolk sac volume of larvae was (53.82±1.03) mm3. Primordia dorsal, anal primordia, pelvic primordia, adipose fin primordia appeared respectively on days 2, 4, 9, and 11. The first chamber air blad-der was formed on 17 d. Larvae began into the mixing vegetative stage on 18 d. First scales appeared in the larva of abdomen, entered into juvenile stage on 20 d. The yolk sac was completely absorbed, juvenile completely ex-ogenous nutrition on 26 d. All fins completed development on 52 d. Stripes appeared completed development on the body surface on 64 d. The scales fully distributed the body on 73 d, entered the young period. Growth model equations fish larvae period is: TL=0.3766D+13.318, (R2=0.9772, TL: total length,D: days of age), the specific growth rate was 0.030. This study aims to provide scientific guidance for the Sichuan taimen artificial breeding and fry cultivation.关键词
川陕哲罗鲑/胚胎发育/积温/仔/稚鱼发育Key words
Hucho bleekeri Kimura/embryonic development/accumulated temperature/larval development/juvenile development分类
农业科技引用本文复制引用
杨焕超,杨晓鸽,吴金明,王成友,危起伟..川陕哲罗鲑个体的早期发育观察[J].中国水产科学,2016,23(4):759-770,12.基金项目
中国水产科学研究院基本科研业务费(2014A07XK05) （2014A07XK05）
农业部公益性行业(农业)科研专项(201203086) （农业）
