Relationships between trophic niche breadth and reproductive capabilities in a population of Proasellus coxalis Dollfus (Crustacea: Isopoda)

被引：17

作者：

Basset, A. ^{[1
]}

Rossi, L. ^{[1
]}

机构：

[1] Univ Rome La Sapienza, Dipartimento Genet & Biol Mol, I-00185 Rome, Italy

来源：

FUNCTIONAL ECOLOGY | 1987年 / 1卷 / 01期

关键词：

Trophic niche; niche breadth; generalist; specialist; brood size; reproductive efficiency; vagility; isopod; detritivore; microfungi;

D O I：

10.2307/2389352

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Single, ovigerous females of Proasellus coxalis Dollfus, collected from a natural population, were experimentally assessed for five characteristics: food niche breadth; ingestion rate; vagility among resource patches; brood size; and body size. Reproductive efficiency was evaluated as brood size divided by ingestion rate. Large individuals had greater mean brood sizes than smaller individuals and generalist individuals had brood sizes greater than specialists. By contrast, the reproductive efficiency of generalists was less than that of specialists and this was ascribed to greater vagility and hence foraging costs associated with the generalist habit.

引用

页码：13 / 18

页数：6

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