摘要
研究了瘤背石磺亲体在不同温度、盐度下受精卵的孵化及不同开口饵料、不同附着基对浮游幼虫的培育和附着效果。结果表明,不同饵料对亲体的成活率无显著影响,各组成活率均超过95%;在(27±1)℃、不换水条件下,5、10、15、20、25、30的各盐度组中,以15、20盐度组的孵化率最高,分别为96.4%、95.8%;在盐度15、不换水条件下,(24±1)(、27±1)、(30±1)、(33±1)℃温度组,受精卵产出后至孵化出膜的时间分别需319、297、2862、78 h;采用自制孵化框漂浮式孵化,孵化率高达98%;不同开口饵料试验结果表明,金藻投喂组幼体成活率最高,为87.5%;不同附着基附着培养试验10 d后,悬浮球填料组的成活率最高,达90%,且个体整齐、生长速度快,而铺泥组为43%,不加附着基组仅38%。
The effect of diets on the growth of broodstock Onchidium struma,and effects of salinity（5,10,15,20,and 25）,temperature[（24±1） ℃,（27±1） ℃,（30±1） ℃,and（33±1） ℃] and incubator on the development of the embryos were studied.It was found that there were no significant differences in survival（above 95%） of the broodstock fed different diets.The maximal hatching rates were observed in the groups with salinity of 15（96.4%）and 20（95.8%） at water temperature of（27±1） ℃.Development from the fertilized zygotes to veliger larvae required 319 h at（24±1） ℃,297 h at（27±1） ℃,286 h at（30±1） ℃,and 278 h at（33±1） ℃ under a salinity of 15 without water exchange.Hatching rate was up to 98%,and 83% in the treatment group of aeration with float-frame incubators,and the maximal survival rate（87.5%） was found in the group with microalga Isochrysis galbana.There was the best growth in the 10 d old larvae（survival 90%） with floating ball,while the survival rate of the larvae was 43% in the group with soil bottom and 38% in the group without shelter.
出处
《水产科学》
CAS
北大核心
2010年第10期597-600,共4页
Fisheries Science
基金
浙江省科技厅重大科技专项(2009C03017-4)
宁波市科技局资助项目(2006C100036)
关键词
瘤背石磺
幼虫培育
开口饵料
附着基
Onchidium struma
larva cultivation
weaning food
attachment
