摘要
观察罗氏沼虾胚胎发育的形态变化并探究温度对胚胎发育的影响,结果表明:罗氏沼虾胚胎发育可划分为8个阶段,包括受精卵、卵裂期、囊胚期、原肠胚期、前无节幼体期、后无节幼体期、前溞状幼体期、溞状幼体期。在一定温度下,胚胎发育速度随温度的升高而减少,胚胎发育的最适温度为30℃,此时幼体开口率和孵化率最高,也可以起到节约成本的作用,发育温度和发育时间的回归方程为y=181.127-9.921x+0.149x2。
The morphological changes were observed and the effect of temperature on embryonic development of Macrobrachium rosenbergii was studied. The results showed that the embryonic development could be divided into eight stages, including fertilized egg stage, cleavage stage, blastula stage, gastrula stage, egg nauplius stage, egg metanauplius stage, protozoea stage and zoea stage. Within a certain temperature range, speed of embryonic development decreased with increase of temperature with optimum temperature around 30℃. At 30℃, the aperture ratio and hatching rate of larvae were the highest, and the cost was less. The regression equation of developmental temperature and development time was described as y=181.127-9.921 x＋0.149 x2.
出处
《广东农业科学》
CAS
2015年第20期112-117,F0002,I0001,共8页
Guangdong Agricultural Sciences
基金
广州市民生科技重大专项计划项目(2012Y2-00010)
广东省教育部产学研结合项目(2011B090500009
2009B090300100)
关键词
罗氏沼虾
胚胎发育
温度
开口率
Macrobrachium rosenbergii
embryonic development
temperature
aperture ratio
