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厚唇裸重唇鱼胚胎发育的形态学观察
Morphology Observation of the Embryonic Development of Gymnodiptychus pachycheilus
张艳萍,王太*,焦文龙,杜岩岩,史小宁
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作者单位:(甘肃省水产研究所,甘肃省冷水性鱼类种质资源与遗传育种重点实验室,兰州730030)
中文关键字:厚唇裸重唇鱼;胚胎发育;形态学
英文关键字:Gymnodiptychus pachycheilus Herzenstein; embryonic development; morphology
中文摘要:采用体视显微镜对厚唇裸重唇鱼的胚胎发育过程进行连续观察和描述。结果表明,受精卵呈卵圆形,卵径较大,吸水膨胀后为(4.41±0.13)mm。在水温为9条件下,授精后9 h进入卵裂期,23 h 30 min进入囊胚期,33 h进入原肠期,71 h进入神经胚期,74 h 30 min进入器官分化期,210 h开始破膜而出,初孵仔鱼全长9.35 mm。破膜后16 d仔鱼开始上浮。对厚唇裸重唇鱼的胚胎发育特点与其近缘种的差异进行了讨论。
英文摘要:Steteo microscope was used for the continuous observation and description of embryonic development of Gymnodiptychus pachycheilus. The results showed that the fertilized eggs were oval in shape and the diameters were 4.41 mm±0.13 mm after water swelling. The embryo development would last for 218 h when the water temperature was approximately 9. The first cleavage occurred at 9 h post-fertilization, and then the blastula and gastrula stages began at 23 h 30 min and 33 h, and neural plate stage began at 71 h. The phase of organ differentiation started at 74 h 30 min time point. Hatching occurred at 210 h and finished at 226 h. The newly hatched larvae were 9.35 mm in average overall length and usually lied on the bottom of the water. Hatched larva fish started to swim after rupture of membrane for 16 d. Moreover, the difference of embryonic development between G. pachycheilus and relative species was discussed.
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国内统一连续出版物号:51-1193/Q |国际标准出版物号:1000-7083
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