van Straalen Nico M
Biologisch Laboratorium, Vrije Universiteit, De Boelelaan 1087, Postbus 7161, NL1007 MC, Amsterdam, The Netherlands.
Oecologia. 1985 Sep;67(2):220-223. doi: 10.1007/BF00384288.
Forest floor populations of Orchesella cincta (L) and Tomocerus minor (Lubbock) (Collembola; Entomobryidae) have been sampled over two generations and from length frequency distributions survivorship curves were constructed for each generation. Size-specific mortality rates were computed from size-specific survivorship data. The results reveal an asymmetrically U-shaped mortality pattern, with disproportionally high juvenile mortality. The pattern changes from one generation to the next, in particular the post-hatching mortality. Evidence from behavioural ecological research on a Collembola-specialized ground beetle is cited in favour of the hypothesis that size-specific mortality patterns are moulded by size-specific predation.
对森林地表的环带奥甲螨（Orchesella cincta (L)）和微小汤姆奥甲螨（Tomocerus minor (Lubbock)）（弹尾目；长角跳虫科）种群进行了两代抽样，并根据体长频率分布为每一代构建了存活曲线。从特定体长的存活数据计算出特定大小的死亡率。结果揭示了一种不对称的U形死亡模式，幼体死亡率极高。这种模式在两代之间有所变化，尤其是孵化后的死亡率。引用了一项针对专门捕食弹尾目的步甲的行为生态学研究证据，以支持特定大小的死亡模式是由特定大小的捕食塑造的这一假设。
