By the same authors

From the same journal

From the same journal

A Comparative Study of Sex Ratio and Clutch Size in Gregarious Ichneumonoid Wasps

Research output: Contribution to journalLiterature reviewpeer-review

Published copy (DOI)

Author(s)

Department/unit(s)

Publication details

JournalJournal of insect behavior
DatePublished - Jul 2009
Issue number4
Volume22
Number of pages16
Pages (from-to)273-288
Original languageEnglish

Abstract

Some convincing support for sex ratio theory comes from the cross-species relationship between sex ratio and brood size in gregarious bethylid wasps (Hymenoptera: Bethylidae), in which the proportion males declines as brood size increases as predicted under local mate competition. It is unknown how widely such relationships hold within parasitoid wasps as a whole. We assemble a dataset on sex ratio and brood size for gregarious Braconidae and Ichneumonidae. Their sex ratios deviate substantially from those of bethylids; sex ratios differ widely across species; and they are not significantly related to brood size across species. Several factors explain the heterogeneity in sex ratios including across-species differences in mating system, sex determining mechanism, and sexual asymmetries in larval competition and polyembryony leading to single-sexed broods.

    Research areas

  • Bethylidae, Braconidae, Ichneumonidae, local mate competition, mating structure, sex ratio theory, LOCAL MATE COMPETITION, PARASITOID WASP, BRACON-HEBETOR, INDEPENDENT CONTRASTS, COTESIA-GLOMERATA, BETHYLID WASPS, LIFE-HISTORY, DEVELOPMENTAL MORTALITY, NONSIBLICIDAL BEHAVIOR, BIOLOGICAL-CONTROL

Discover related content

Find related publications, people, projects, datasets and more using interactive charts.

View graph of relations