中国对虾幼体期视觉器官的发育

于１９９４年３－５月，以中国对虾无节幼体６个亚期，蚤状幼体３个亚期，糖虾幼体３个亚期及仔虾各时期的幼体为材料，用日产Ｏｌｙｍｐｕｓ万能研究显微镜观察研究各期幼体单眼及复眼的发育。结果表明：在中国对虾无节幼体Ｎ１－Ｎ６６个亚期，单眼的两侧均有复眼的原基组织。     

OBSERVATIONS ON THE OVULATING PROCESS OF THE RED FLAGELLATED SHRIMP Acetes chinensis .

Acetes chinensis always ovulate in the dark at night. Two to five hours before ovulation, the mature oocytes change from white to orange. In the meantime, meiosis of the oocytes occurs, and reaches the metaphase just prior to ovulation. If ovarian colour change starts in the dark at night but ovulation does not start by break of dawn, ovulation will be inhibited and meiosis of the cells will be blocked.     

中国毛虾的世代划分——生殖痕迹的形成

本项研究以定期采集的毛虾及培养的产卵后雌性毛虾标本为材料,对其卵巢等生殖器官作整体显微观察和组织学、组织化学研究,以阐明初夏世代毛虾的卵巢中生殖痕迹的形成过程,及探讨运用这种痕迹作为世代划分标志的可行性。观祭结果表明,(1)在经历首次繁殖周期的初夏世代毛虾的卵巢中,遗留的卵泡组织一直存在到下一发育周期的新卵泡形成期;这种遗留组织占据卵巢的周边区,形成无卵边缘,与首次发育的夏秋世代毛虾卵巢的形态差异显著,易于判别;在遗留的卵泡细胞的胞质中,RNA减少,中性多糖产生和积累,显示细胞的老化趋势,同时细胞呈PAS强阳性反应而区别于新生的卵泡细胞。(2)在雄性毛虾的精巢中无生殖痕迹可寻,仅发现较大个体的精囊中射精孔上皮组织破裂,这是否交配的痕迹,尚待进一步证明。     

THE CYTOCHEMISTRY OF OOCYTES OF CHINESE SHRIMP PENAEUS ORIENT A US

In the growth of oocytes of Penaeus orientalis Kishinouye, five stages were distinguished . Histochemical tests showed the presence of DNA in the chromatin and nucleolus of the cell. The cytoplasm at the previtellogenetic stage and the nucleolus are rich in RNA and the proteins abounding with cysteine, tyrosine and tryptophan. The yolk consists mai nly of proteins and phospholipids. The 1, 2-glycol groups of carbohydrate occur in the cytoplasm at stage II , and aggregate mostly into cortical rods at stages IV and V. Neutral lipid droplets, and protein containing disulfides, appear in the cytoplasm at stages III and IV respectively. The proteins in the cortical rod differ from those in other components of the cell in the presence of cystine and absence of arginine.