摘要
根据2004年9月~2005年4月我国鱿钓船在印度洋西北部12°N^21°30′N,58°E^65°E获得的鸢乌贼资源调查资料,对其资源特征及其与海况关系进行了分析。研究认为,调查海域内鸢乌贼均有一定的分布,其中以14°30′N、60°E^63°E附近海域CPUE为最高。渔获物胴长范围为163~560 mm,优势胴长组为280~440 mm,占总数的70.51%,平均胴长为365.0 mm。渔获个体组成随纬度变化差异显著,而随经度变化差异不明显。16°N以南海域,雌性个体一般以Ⅰ、Ⅱ期为主;16°N以北海域,则以Ⅲ~Ⅴ期为主。分析还认为,鸢乌贼分布与表温、海面高度距平关系密切,9~11月适宜表温为27~28℃,12月~翌年3月为26~27℃,高产渔场大都分布在海面高度距平SSHA≤0的附近海域。
Based on the investigation data concerming Symlectoteuthis oualaniensis collected by Chinese squid jigging vessels in the area between of 12°N to 21°30′N and 58°E to 65°E of the northwestern Indian Ocean from September 2004 to April 2005, the resource characteristics and their relationships with the sea conditions were studied. The results indicated that the squid was distributed widely in the investigation area, in which the highest density of resources was located in waters near 14°30′N and 60°E to 63°E. The mantle length of the catch ranged from 163 to 560 mm and averaged at 365.0 mm, the dominant size for squid was from 280 to 440 mm, which accounted for 70.51 percent of the total. The size composition changed greatly with latitude but no obvious change was found with longitude. In waters south of 16°N, the females of the catch were generally at maturity stage Ⅰ and Ⅱ, while north of 16°N they were at maturity stage Ⅲ to Ⅴ. The results also indicated that the CPUE distribution is closely related with SST and sea surface height anomaly, the suitable SST is 27-28℃ from September throagh November, 26- 27℃ during December through March. The fishing grounds with high yields were generally located near the areas where the sea surface height anomaly was equal or less than zero.
出处
《中国海洋大学学报（自然科学版）》
CAS
CSCD
北大核心
2006年第4期611-616,共6页
Periodical of Ocean University of China
基金
上海市教委曙光计划"印度洋西北公海海域鸢乌贼的生物学研究"(05-11)
上海市捕捞学重点学科(T1101)资助
关键词
鸢乌贼
资源密度
表温
海面高度距平
印度洋西北部公海海域
Symlectoteuthis oualaniensis
resource density
SST
sea surface height anomaly
high sea of the Northwestern Indian Ocean
