INFLUENCE OF SUPERPARASITISM ON DEVELOPMENT RATE AND ADULT SIZE IN A SOLITARY PARASITOID WASP, APHIDIUS-ERVI

被引：53

作者：

BAI, B ^{[1
]}

MACKAUER, M ^{[1
]}

机构：

[1] SIMON FRASER UNIV,DEPT BIOL SCI,CTR PEST MANAGEMENT,BURNABY V5A 1S6,BC,CANADA

来源：

FUNCTIONAL ECOLOGY | 1992年 / 6卷 / 03期

关键词：

FITNESS; KOINOBIONT; SUPERPARASITISM AS ESS;

D O I：

10.2307/2389521

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

1. We tested the assumption that superparasitism by solitary species of parasitoid wasps has no fitness consequences for the surviving larva. Using Aphidius ervi and its aphid host, Acyrthosiphon pisum, as an experimental system, we compared adult dry mass and development time from oviposition to adult eclosion between male wasps that developed in single- and in superparasitized aphids. 2. Parasitoids gained 14% more dry mass (with no increase in development time) in superparasitized hosts. It is suggested that superparasitized aphids have higher growth potential for the surviving parasitoid larva because they ingest more food than single-parasitized and unparasitized aphids, in that order. 3. The results are relevant to models of superparasitism as an adaptive strategy.

引用

页码：302 / 307

页数：6