Absence of complementary sex determination in the parasitoid wasp genus Asobara (Hymenoptera: Braconidae).
Details
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State: Public
Version: Final published version
State: Public
Version: Final published version
Serval ID
serval:BIB_6E853A6ABE4B
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Absence of complementary sex determination in the parasitoid wasp genus Asobara (Hymenoptera: Braconidae).
Journal
PLoS One
ISSN
1932-6203 (Electronic)
ISSN-L
1932-6203
Publication state
Published
Issued date
2013
Peer-reviewed
Oui
Volume
8
Number
4
Pages
e60459
Language
english
Abstract
An attractive way to improve our understanding of sex determination evolution is to study the underlying mechanisms in closely related species and in a phylogenetic perspective. Hymenopterans are well suited owing to the diverse sex determination mechanisms, including different types of Complementary Sex Determination (CSD) and maternal control sex determination. We investigated different types of CSD in four species within the braconid wasp genus Asobara that exhibit diverse life-history traits. Nine to thirteen generations of inbreeding were monitored for diploid male production, brood size, offspring sex ratio, and pupal mortality as indicators for CSD. In addition, simulation models were developed to compare these observations to predicted patterns for multilocus CSD with up to ten loci. The inbreeding regime did not result in diploid male production, decreased brood sizes, substantially increased offspring sex ratios nor in increased pupal mortality. The simulations further allowed us to reject CSD with up to ten loci, which is a strong refutation of the multilocus CSD model. We discuss how the absence of CSD can be reconciled with the variation in life-history traits among Asobara species, and the ramifications for the phylogenetic distribution of sex determination mechanisms in the Hymenoptera.
Keywords
Animals, Diploidy, Female, Hymenoptera/genetics, Male, Models, Genetic, Sex Determination Processes, Sex Ratio
Pubmed
Web of science
Open Access
Yes
Create date
22/06/2015 12:24
Last modification date
20/08/2019 15:27