论文部分内容阅读
1987年9月,我们进行了一次详细的调查,确定了东库克海峡(Cook Stait)中腔吻鳕的卵及稚鱼分布与水文状况的关系。由于地方性风的原因,当地的水文结构非常复杂。南塔拉纳基湾(Taranaki Bight)水占据了库克海峡北部和中部的大部分水域。克劳迪湾(Cloudy Bay)沿岸水被河水冲淡,并由于库克海峡峡谷上升流进入克利福德湾(Clifford Bay)和开普.坎贝尔(Cape Campbell)南部沿岸,使克劳迪湾的沿岸水向近岸呈羽状伸展。东开普流水体出现在库克海峡峡谷水深200m附近和陆架外缘。开普.帕利瑟(Cape Palliser)南部的深层混合说明,该地区有一股反气旋涡旋。叶绿素α浓度与混合层深度有关,它在垂直分层的表面水体中最高。腔吻鳕卵在库克海峡峡谷内最多,该地区是这种鱼类著名的产卵场。小的腔吻鳕稚鱼(2.0～3.9mm)数在卵高密度集区和开普。坎贝尔附近最多,而较大的稚鱼(>10mm)在近岸区最多。根据刚孵化出来的稚鱼的分布情况来看,腔吻鳕卵随着当地的上升流进入开普。坎贝尔的近岸地区。
In September 1987, we conducted a detailed survey to determine the relationship between hydrological status and the distribution of eggs and juveniles in the midgutted cod of the Cook Stait. Due to the local wind, the local hydrological structure is very complicated. The Taranaki Bight water occupies most of the northern and central Cook Strait waters. The waters off Cloudy Bay are diluted by river water and flow into the southern coast of Clifford Bay and Cape Campbell due to the upwelling of the Cook Strait Canyon, Water to the nearshore was stretched. Eastern Cape flow appeared in the Cook Strait canyon near the depth of 200m and the outer shelf. The deep mixing south of Cape Palliser shows an anticyclone vortex in the area. The concentration of chlorophyll α is related to the depth of the mixed layer, which is the highest in the vertically stratified surface water. Cavalier cod eggs are among the largest in the Cook Strait Canyon, the area known for its spawning grounds. Small juvenile codfish larvae (2.0-3.9mm) counted in high egg concentration areas and Cape. Up to Campbell, while Larger Larva (> 10mm) are the most in the nearshore area. According to the distribution of newly hatched larvae, C. parvus enters Cape with the local ascent. The nearshore area of Campbell.