| 日本绒螯蟹与不同水系中华绒螯蟹的形态比较 |
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| 引用本文： | 张列士,姜治忠,李军.日本绒螯蟹与不同水系中华绒螯蟹的形态比较[J].上海海洋大学学报,2002(2):110-113. |
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| 作者姓名： | 张列士 姜治忠 李军 |
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| 作者单位： | [1]上海市水产研究所 [2]上海市水产技术推广站，上海200433 |
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| 摘 要： | 对日本绒螯蟹（Eriocheir japonica)与辽河、长江、瓯江、闽江、南流江水系中中华绒螯蟹（E.sinensis)的形成特征进行了比较研究。与中华绒螯蟹相比，日本绒螯蟹的特征是头胞甲亚方形或圆形；额齿形态圆钝或尖锐；侧齿4个但其中第4侧齿仅具痕迹或侧齿4个，明显；第一龙骨脊颗粒突起不明显或明显；头胸甲背部疣状突4个或6个；体青绿色具网状细纹或墨绿色、古铜色；第五对步足跗节宽呈桨状，宽为长的0.5倍或宽扁不呈桨状，宽仅为长的0.4-0.5倍；趾节桨状，宽为长的0.23倍或趾节爪状，基部为长的0.18-0.2倍等。不同水系的中华绒螯蟹，在形态上虽然存在一定的差异，但其差异不大，为同种的不同地理种群。
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| 关 键 词： | 日本绒螯蟹 中华绒螯蟹 形态差异 种群 |
| 修稿时间： | 2002/1/23 0:00:00 |
The morphological comparison between Eriocheirjaponica and Eriocheir sinenesis in different water systems |
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| ZHANG Lie shi,JIANG Zhi zhong,LI Jun.The morphological comparison between Eriocheirjaponica and Eriocheir sinenesis in different water systems[J].Journal of Shanghai Ocean University,2002(2):110-113. |
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| Authors: | ZHANG Lie shi JIANG Zhi zhong LI Jun |
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| Abstract: | The morphological comparison researches on Eriochair japonica and E.sinensis in different water systems of the Liaohe,Yantze,Oujiand,Minjiang and Nanliujiang River were reported.The major morphological difference of the mitten crabs(E.japonica and E.sinensis) are subsquare or second circular in carapace;obtuse or sharp in frontal teeth;lateral teeth also clear except the 4th tooth is a trace or the 4th lateral tooth also clear;the fisrst keel smooth or existing granular;knob 4or 6 in carapace;body colour olive or dark green,dark copper;tarsus of the 5th pereiopod flat and shaped oar,bneadth under 2 in length or slight flat but not as sharped oar,breadth 2-2.5 in length;toe sogment of shaped oar,breadth 4.3 in length or toe segment shaped claw,short daw,breadth 5-5.6 in length in the base. There are no significant differences in morphology,of the mitten crabs in different water systems,therefore they belong to different populations. |
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| Keywords: | Eriocheir japonica Eriocheir sinensis morphological variance population |
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