闽南-台湾浅滩渔场二长棘鲷群体集群行为宏观量化与分析

根据1998年7月到2000年6月闽南-台湾浅滩渔场开展二长棘鲷资源的专项调查资料, 计算出闽南-台湾浅滩渔场二长棘鲷的各月E值, 定量分析其集群行为变化规律。结果表明: 闽南-台湾浅滩二长棘鲷全年月平均E为7.4409108J, 生殖期间12月到翌年3月, 其月平均E 2.4949108J, 是全年月平均E的0.34倍, 鱼群集中; 4-5月, 幼鱼大量出现, 月平均E为4.556108J, 是全年月平均 的0.61倍, 鱼群相对集中; 主要索饵季节6-8月, 月平均E为1.3448109J, 是全年月平均 的1.81倍, 鱼群分散; 9-11月, E分别为1.435109、9.7409108、5.769108J, 分别是全年月平均 的1.93、1.31、0.78倍, 鱼群为适应水温和寻找产卵场, 在外移过程中逐渐集中。可见, 闽南-台湾浅滩二长棘鲷的生殖群体集群性最强, 其次是幼鱼群体、以适应水温和寻找产卵场为目的的群体, 而索饵群体分散。  

Macro-level quantification and analysis of schooling behavior of Parargyrops edita Tanaka in Minnan-Taiwan Bank Fishing Ground

According special investigation material of Parargyrops edita population in Minnan-Taiwan bank fishing ground from July 1998 to June 2000, the E value in each month of P. edita population was calculated, which used to quantificationally analyse the variation rule of schooling behavior. The results showed that the annual monthly average E of P. edita population in Minnan-Taiwan bank fishing ground is 7.4409108J, in the reproduction period which from December to March of the next year, the average monthly E is 2.4949108J, which was 0.34 times of the annual average, that meant the fish concentrated; young appeared in large numbers from April to May, and the average monthly E was 4.556108J, which was 0.61 times of the annual average, the fish relatively concentrated; in feeding migratory months from June to August, the average monthly E was 1.3448109J, which was 1.81 times of the annual average, the fish dispersed; E was 1.435109, 9.7409108, 5.769108J from September to November respectively, which was 1.93, 1.31 and 0.78 times of the annual average E; in the transfer process, the fish population gradually concentrated in order to adapt to water temperature and look for spawning grounds. So schooling behavior of the reproductive population of P. edita in Minnan-Taiwan bank fishing ground was the strongest, followed by a young group and the group which need adapt to the water temperature and search for spawning grounds, while the feeding group disperse.