The Maturity Index, the evolution of nematode life history traits, adaptive radiation and cp-scaling
The Maturity Index, the evolution of nematode life history traits, adaptive radiation and cp-scaling
复制标题
DOI：
10.1023/a:1004571900425
复制
发表时间：
1999-01-01
期刊：
影响因子：
4.9
通讯作者：
Bongers, T
中科院分区：
文献类型：
--
作者：
Bongers, T
线虫越来越多地用于环境研究。衡量扰动影响和监测地下生态系统结构和功能变化的一个潜在参数是线虫成熟指数;这是一个基于定殖者比例的指数（r-strategists s.l.）和persisters（K-strategists s.l.）在样品中。本文从进化的角度讨论了线虫类群在定殖者-持留者尺度上的原始分布，以及定殖者和持留者的耐受性和敏感性。无论是相对卵大小还是体长都不是介壳线虫明确的特征，这一现象表明生活史特征的主要选择独立地发生在主要的进化分支中。
Nematodes are increasingly being used in environmental studies. One of the potential parameters to measure the impact of disturbances and to monitor changes in structure and functioning of the below-ground ecosystem is the nematode Maturity Index; an index based on the proportion of colonizers (r-strategists s.l.) and persisters (K-strategists s.l.) in samples. In this paper the original allocation of nematode taxa on the colonizer-persister scale, and the tolerance and sensitivity of colonizers and persisters are discussed from an evolutionary viewpoint. The phenomenon that neither relative egg size nor body length is an unequivocal character to scale nematodes suggests that the main selection for life history traits occurred independently in the major evolutionary branches.