摘要
对粒结节滨螺种群按垂直分布区的上、中、下部逐月连续取样十四个月。测得种群的平均个体大小,呈现由下而上逐渐增大的梯度分布。6月至9月种群中没有幼体(<3mm)存在。幼体增补在垂直分布区的中、下部数量最大。除了6月至9月下限没有滨螺存在外,种群的垂直分布的上限和下限位置无显著变化。
The size structure of population Nodilittorina millegrana was examined monthly for fourteen monthes at three levels on a Pingtan shore. The population exibits a size gradient of increasing shell length up the shore. Recruitment was greatest at the lower levels and occured from October to May, with lacking of smaller snails (<3mm ) from June to September.
出处
《福建师范大学学报（自然科学版）》
CAS
CSCD
1990年第3期80-83,共4页
Journal of Fujian Normal University：Natural Science Edition
关键词
粒结节滨螺
个体大小结构
滨螺科
Nodilittorina millegrana, vertical areal size gradient
