【摘要】 本文分析遮浪湾浮游幼虫的季节分布及其与环境因子的关系,并讨论其它有关生态问题。湾内浮游幼虫总数量和主要类群数量的季节变化呈现典型的亚热带海区的双周期型,数量的平面分布随离岸距离增加而增多,水温过低或过高和低盐度均对幼虫的生长活动不利。湾中甲壳动物的无节幼虫最丰富,多毛类和棘皮动物的浮游幼虫次之。更多还原

【Abstract】 The seasonal distribution of pelagic larvae in Zhelang Bay shows the pattern of two peaks in quantity, typical of the double-cycled dynamics in subtropical waters. The spring peak is higher than the autumn one. Among the samples, the nauplius are abundant and the next are the polychaete larvae. With their active movement the larvae are able to regulate their verticle and horizontal positions to spread the horizontal distribution toward the outside of the Bay. The temperature best adapted for larval existence appears between 17-27℃ and lower salinity is disadvantageous to the larval activities. It is suggested to collect pelagic larvae by plankton nets combined with middle and small size of which meshes are o.l-0.5mm.更多还原