Sexual size dimorphism in parasitoid wasps
作者:
Bethia Hurlbutt,
期刊:
Biological Journal of the Linnean Society
(WILEY Available online 1987)
卷期:
Volume 30,
issue 1
页码: 63-89
ISSN:0024-4066
年代: 1987
DOI:10.1111/j.1095-8312.1987.tb00290.x
出版商: Blackwell Publishing Ltd
关键词: sexual dimorphism;sexual selection;parasitoid wasps;Ichneumonidae
数据来源: WILEY
摘要:
Sexual dimorphism in body length and proportion of overlap between the ranges of body length for males and females were estimated for 361 species of parasitoid wasps from 21 families. In most species, females are generally larger than males, though the range of male and female sizes overlap. Species in the family Ichneumonidae differ significantly from species in other families in three ways: (1) ichneumonids on average are larger, (2) in most species, females are generally smaller than males, and (3) on average, proportion overlap between the ranges of body length for males and females is greater. At present, there is a paucity of life history data on parasitoid wasp species for which size dimorphism is known. Thus it is not clear why ichneumonids differ from species in other families. Possible evolutionary explanations for variation in dimorphism among parasitoid wasp species are discussed.
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