桡足类滞育规律研究

Abstract

【中文摘要】 首次提出用滞育指数对桡足类滞育能力进行相对量化处理 ,并对 10 2种桡足类的滞育能力同迁移能力、体长、栖息地之间的关系进行了数学分析 ,初步得出了滞育在桡足类中的分布规律 :在桡足类中滞育与迁移呈负相关 ,两者之间存在一定程度的置换 ;个体较小的桡足类一般具有较强的滞育能力和较弱的迁移能力 ,个体较大的桡足类一般具有较弱的滞育能力和较强的迁移能力 ;淡水桡足类一般比海洋桡足类具有较强的滞育能力。最后探讨了这种分布模式的成因 【英文摘要】 Many copepods have integrated a state of diapause in their life history to avoid the critical conditions. It has been showed that the diapause trait is by no means evenly distributed within copepods, such as different diapausing forms (Diapause occurs in eggs, copepidites or adults.) and different diapausing locations (in water column or in sediment). In this paper we attempt to investigate the distribution of diapause among copepods based on the published data of 102 species from 3 orders of pelagic copepo...