In this paper, the comparison of spermatogenesis and spermatozoal ultrastructures of four species of decapoda were investigated by electron microscopy ( tem ). we had tried to find structural variaton between the four species during their spermatogenesis. from this comparison study, we can pursue the evolution route of the four decapods
本論文採用透射電鏡技術比較研究十足目（ decapoda ）物種浙江華溪
蟹（ sinopotamonchekiangense ） 、三疣梭子
蟹（ portunus ， trituberculatus ） 、脊
尾白蝦（ exopalarmoncarinicandaholthuis ）及羅氏沼蝦（ macrobrachiumrosenbergii ）的精子發生和精子結構。
Assorted sandwiches ( tomato & egg, ham & cheese, roast beef & gherkins, cucumber & crabmeat, shrimps with cocktail sauce, smoked salmon with caper )
雜錦三文治（蕃茄及雞蛋、火腿及芝士、燒牛肉及小黃瓜、青瓜及
蟹肉、鮮蝦伴雞
尾酒汁、煙三文魚配水瓜柳）
The 12940 bp nucleotide sequence of the mitochondrial genome of a brachyura dacapod, eriocheir japonica sinesis, was determined
測定了短
尾類十足目動物中華絨螯
蟹的線粒體基因組12940bp的核苷酸序列。
To statistic, there are more than 360 fish species, 60 shrimp species and 100 shell species living in the sea area
捕撈的主要品種有帶魚墨魚鯧魚鰳魚馬鮫海鰻馬
尾魚石斑魚梭子
蟹等40多種。
A shrimp cocktail and some fried peanuts for appetizer. a plate of shanghai crab, a grilled fish, a roast spring chicken and a cauliflower soup
女士，先要一杯蝦仁雞尾酒和一些炸花生米開胃，然後要上海螃蟹、鐵扒魚、烤仔雞和花菜湯各一份。
