作者: N. Pike , C. Braendle , W. A. Foster
DOI: 10.1111/J.0307-6946.2004.00569.X
关键词:
摘要: . 1. The possibility that the duration of soldier instar could be extended over course galling season was examined in Pemphigus spyrothecae Passerini (Hemiptera: Aphididae). In this species, individuals one morph dimorphic first are non-sterile specialised defenders known as soldiers. 2. face a declining birth rate, proportion first-instar soldiers to non-soldiers found increase. This provides strong evidence extension time. 3. Instar mechanism for post-natal investment and allows with insufficient time mature remain defensive stage so they may continue make an indirect contribution their clone's reproductive success.