三种南极鱼种分布的研究

根据英国南极考察中心（ＢＡＳ）在南极半岛水域（１９８８／１９８９）调查资料分析了三种南极鱼种（南极多线鱼（Ｐｌｅｕｒａｇｒａｍｍａａｎｔａｒｃｔｉｃｕｍ），南极电灯笼鱼（Ｅｌｅｃｔｒｏｎａａｎｔａｒｔｉｃａ），博氏原灯笼鱼（Ｐｒｏｔｏｍｐｅｔｏｐｈｕｍｂｏｌｉｎｉ）的分布．南极多线鱼分布于受韦岛（Ｗｅｄｄｌｅ）海水影响的水域（丰度值：０．０５４至１．７７５４尾／１０００ｍ３），指出绝大多数幼鱼（２６．０至５４．０ｍｍ，ＳＬ）发现在上层水域．南极电灯笼鱼和博氏原灯笼鱼分布于东南太平洋水域和贝令施森（Ｂｅｌｌｉｎｇｓｈａｕｓｅｎ）水域（丰度值：０．０５１２至０．９９３５和０．０３９４至０．３９０９尾／１０００ｍ３）．此两种灯笼鱼种的分布水深一般大于５００ｍ。

DISTRIBUTION OF THREE ANTARGTIC FISH SPECIES

The data. which were provided by British Antarctic Survey (BAS), were collected during an expedition in the vicinity of the Antarctic Peninsula area in 1988/1989. The distributions of the three Antarctic fish species (Pleuragramma antarcticum, Electrona antarCtica and Protomyctophum bolini) were examined. P. Antarcticum was distributed in the region influenced by Weddle Sea water (with values of abundance of 0. 054 to 1. 7754 individuals/1000m3), and most of the juveniles (26. 0 mm to 54. 0 mm SL) occurred in the upper water layer. E. antarctica and P. bolini were distributed in the South East Pacific water and the Bellingshausen Sea water (with values of abundance of 0. 0512 to 0. 9935 and 0. 0394 to 0.3909 individuals/1000m3 respectively). Specimens of these two lantern fish species generally occurred at localities where water depths were greater than about 500 m.