Wu Yu-Mei, Yang Sheng-Long, Shen Jian-Hua, Zhou Wei-Feng, Zhang Jing
Ministry of Agriculture Key Laboratory of Marine & Estuarine Fisheries, East China Sea Fisheries Research Institute, Shanghai 200090, China.
Ying Yong Sheng Tai Xue Bao. 2009 Jun;20(6):1445-51.
Based on the catch amount data of Chinese squid jigger vessels from January to July 2006 and the sea current, sea surface temperature (SST) and chlorophyll-a (chl-a) data derived from satellites, the characteristics of Illex argentinus fishing grounds, their productivity, and environment factors in southwest Atlantic were analyzed. There were two main I. argentinus fishing grounds in southwest Atlantic, one in its south part (60 degrees 30' W, 45 degrees 30' S) and the other in the north part (58 degrees 00' W, 42 degrees 00' S). From January to July, the main fishing grounds migrated from south to north. The productivity fluctuated notably in different months, being higher from January to April and the highest in March. After May, the productivity decreased gradually. The locations of the fishing grounds had close relationships with Falkland cold current. North fishing ground located at the main axis of the current, with a current speed of about 28-60 cm x s(-1); and south fishing ground located at the west of the current, with a small scale anticyclone and a current speed of about 5-32 cm x s(-1). The favorable SST in the fishing grounds was 7 degrees C-15 degrees C, with a favorite SST of 12 degrees C, and the favorable chl-a concentration was 0.4-1.5 mg x m(-3), with a favorite chl-a concentration of 0.9-1.2 mg x m(-3). A significant positive relationship was observed between I. argentinus productivity and chl-a concentration (P < 0.05).
根据2006年1月至7月中国鱿鱼钓船的渔获量数据以及卫星获取的海流、海表面温度（SST）和叶绿素-a（chl-a）数据，分析了西南大西洋阿根廷滑柔鱼渔场的特征、生产力及其环境因子。西南大西洋有两个主要的阿根廷滑柔鱼渔场，一个在其南部（西经60°30′，南纬45°30′），另一个在北部（西经58°00′，南纬42°00′）。1月至7月，主要渔场从南向北迁移。生产力在不同月份波动显著，1月至4月较高，3月最高。5月之后，生产力逐渐下降。渔场位置与福克兰寒流关系密切。北部渔场位于海流主轴线，海流速度约为28 - 60 cm·s⁻¹；南部渔场位于海流西侧，有一个小尺度反气旋，海流速度约为5 - 32 cm·s⁻¹。渔场适宜的海表面温度为7℃ - 15℃，最适宜温度为12℃，适宜的叶绿素-a浓度为0.4 - 1.5 mg·m⁻³，最适宜浓度为0.9 - 1.2 mg·m⁻³。观察到阿根廷滑柔鱼生产力与叶绿素-a浓度之间存在显著正相关（P < 0.05）。
