当前位置: 首页 > 文章 > 长江中下游中华绒螯蟹亲体资源动态研究 水生生物学报 2002 (6) 641-647
Position: Home > Articles > STUDIES ON DYNAMIC CHANGE OF MATURED MITTEN CRAB RESOURCE IN THE MIDDLE AND LOWER REACHES OF THE YANGTZE RIVER Acta Hydrobiologica Sinica 2002 (6) 641-647

长江中下游中华绒螯蟹亲体资源动态研究

作  者:
施炜纲;周昕;杜晓燕
单  位:
中国水产科学研究院淡水渔业研究中心
关键词:
亲蟹;汛期;洄游;资源;保护
摘  要:
依据 1 989~ 1 999年间的连续监测数据表明 ,长江河蟹平均壳长 5 8mm ;平均壳宽 63mm ;平均体重 1 31g。雌雄性比为 1∶0 92 ,汛期高峰 1 0月 4日— 1 0月 1 9日 ;河口段为 1 1月下旬。资源急剧衰退 ,南京以上江段亲蟹蟹汛已消失。本文对长江亲蟹的捕捞现状、生殖洄游进行了分析 ,提出了长江河蟹资源保护措施
译  名:
STUDIES ON DYNAMIC CHANGE OF MATURED MITTEN CRAB RESOURCE IN THE MIDDLE AND LOWER REACHES OF THE YANGTZE RIVER
作  者:
SHI Wei gang, ZHOU Xin and DU Xiao yan (Freshwater Fisheries Research Centre, Chinese Academy of Fishery Sciences, Wuxi 214081)
关键词:
Crab broodstock; Crab season; Migration;Crab resources; Protection
摘  要:
According to the data from continuous monitoring during 1989~1999,the average body length, body width and body weight of matured mitten crab caught from the Yangtze River were 58mm, 63mm and 131g respectively. The ratio of female to male was 1∶0.92 in the catching. The peak season of the crab catching was from Oct. 4 to Oct. 19 in the middle and lower reaches of the river and late November in the estuaries. As the result of drastic declining of the matured mitten crab resource, the catching season of matured mitten crab disappeared in the river course upper than NanJing. The authors analyzed the reproductive migration and the present catching of the crab in the Yangtze River. Protective measures on the crab resource in the Yangtze River were also suggested in the paper.

相似文章

计量
文章访问数: 5
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊