摘要
为了研究中华沙鳅胚胎的各发育期形态特征及发育特点,采用莱卡体视显微镜对中华沙鳅胚胎发育进行连续观察、描述和拍照记录.结果表明：成熟卵直径为0.9～ 1.3 mm.受精卵吸水膨胀之后卵膜外径为4.21～4.98 mm,漂流性.在水温23℃±0.5℃时,中华沙鳅胚胎需要33 h 15 min发育后出膜.胚胎发育过程可划分为7个阶段26个发育期.初孵仔鱼身体透明,全长约4.8～ 5.1 mm,肌节数为24 ＋14.
In order to study the morphological features and development characteristics of Botia superciliaris during its embryonic development stages,the embryonic development of Botia superciliaris were continuously observed,photographed and described by Leica stereomicroscope.The results showed that,the diameter of the fertilized egg ranged from 0.9 to 1.3 mm and the egg membrane expanded ranging from 4.21 to 4.98 mm after the egg absorption of water.The eggs could drift in flowing water.When the water temperature was 23℃ ± 0.5 ℃,the time from fertilization to larvae was 33 h 15 min.The embryonic development can be divided into 7 phases and subdivided into 26 developing stages.The newly hatched larvae was transparent,and the total body length of newly hatched larvae ranged from 4.8 to 5.1 mm,with about 24 ＋ 14 myomeres.
出处
《西南农业学报》
CSCD
北大核心
2014年第3期1332-1336,共5页
Southwest China Journal of Agricultural Sciences
基金
宜宾市科技计划项目(2010NY003)
关键词
中华沙鳅
胚胎发育
受精卵
Botia superciliaris
Embryonic development
Fertilized egg
