摘要
为确定拟目乌贼发育生长最佳温度条件,采用单因子试验研究了不同温度(15、18、21、24、27、30、33℃)对拟目乌贼胚胎发育及幼体生长的影响.结果表明:不同温度对拟目乌贼胚胎发育及幼体影响显著(P<0.05).胚胎发育适宜温度为21～30℃,最适温度为24℃.最适温度下孵化率达(93.3±2.9)%,培育周期为(24.33±0.58)d,孵化周期为(6.00±1.00)d,卵黄囊完全吸收率为(96.4±3.1)%,初孵幼体体质量为(0.258±0.007)g.有效积温模型为N=284.42/(T-12.57).幼体生长适宜温度为21～30℃,最适温度为24～27℃.最适宜温度下幼体存活率达70.0%～73.3%,特定生长率为2.4%～3.8%.
A single-factor experiment was conducted to study the effects of different temperature （15, 18, 21, 24, 27, 30, and 33 ℃ ） on the embryonic development and larval growth of Sepia lycidas, aimed to search for the optimum temperature for the development and growth of S. lycidas. The results showed that temperature had significant effects on the embryonic development and larval growth of S. lycidas （P〈0. 05 ）. The suitable temperature for hatching ranged from 21 ℃ to 30 ℃, and the optimum temperature was 24 ℃. At the optimum temperature, the hatching rate was （93.3±2.9） %, incubation period was （24.33±0.58） d, hatching period was （6.00±1.00） d, completely absorked rate of yolk sac was （ 96.4 ±3.1 ） % , and newly hatched larvae mass was （0. 258±0. 007） g. The effective accumulated temperature model was N = 284.42/（ T- 12.57 ）. The suitable temperature for the larval survival and growth ranged from 21 ℃ to 30 ℃, and the op- timum temperature was from 24 ℃ to 27 ℃. At the optimum temperature, the survival rate ranged from 70.0% to 73.3% , and the specific growth rate was from 2.4% to 3.8%.
出处
《应用生态学报》
CAS
CSCD
北大核心
2013年第5期1453-1460,共8页
Chinese Journal of Applied Ecology
基金
国家自然科学基金项目(40776076)
国家农业成果转化项目(2009GB2C220415)
宁波市科技重点项目(2011C11002)资助
关键词
拟目乌贼
温度
孵化率
幼体生长
Sepia lycidas
temperature
hatching rate
larval growth.
