【摘要】 <正> 镰形棒矛虫(Sticholonche zanclea Hertwig)为独特的一种放射虫,在分类位置上尚未十分确定,在生态习性方面也有别于其他的放射虫;过去,对它的研究报道较多,本文则是根据1959年全国海洋综合调查部分海区采集的标本资料(调查区及所用标本资料与“东海放射虫的研究”一文相同)进行整理,初步叙述了它在东海西部的数量分布。根据1959年全年的调查统计,镰形棒矛虫在调查区数量分布的季节性变化是十分显著的,从12个月的分布图(图1)看来,1月份分布在31°N 以南,稀疏分散,寥寥无几,各调查站出现数量均在500个/米~3以下,总个数平均值不到2个/米~3;2月份出现的范围更更多还原

【Abstract】 Sticholonche zanclea Hertwing has the following patterns of distribution in the East China Sea.It occurs in greater numbers between longitudes 122°—123°E.Its northern boundary of distribution extends farther north during summer and autunm, regressing in winter and spring.The total number of individuals per cubic meter of water is greater in summer than in winter.Denser concentration is found in the surface layers than in the bottom layers.A direct relationship exists between its quantitative distribution and seasonal variation in temperature—it increasing in number with seasonal increase in water temperature,and vice versa.It occurs in great abundance in waters rich in phosphate and phytoplankton.Run-offs seem to exert some influence in increasing its production.Based on its.widely recorded oc- currence in other parts of the world and on its features of distribution in the East China Sea,we consider it to be a widely distributed warm-water species.更多还原