Absence of complementary sex determination in the parasitoid wasp genus Asobara (Hymenoptera: Braconidae).

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 Complementar...

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Autores principales:	Wen-Juan Ma, Bram Kuijper, Jetske G de Boer, Louis van de Zande, Leo W Beukeboom, Bregje Wertheim, Bart A Pannebakker
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2734268b22754c8a8babf6d746252e74
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spelling	oai:doaj.org-article:2734268b22754c8a8babf6d746252e742021-11-18T07:50:51ZAbsence of complementary sex determination in the parasitoid wasp genus Asobara (Hymenoptera: Braconidae).1932-620310.1371/journal.pone.0060459https://doaj.org/article/2734268b22754c8a8babf6d746252e742013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23637750/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203An 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.Wen-Juan MaBram KuijperJetske G de BoerLouis van de ZandeLeo W BeukeboomBregje WertheimBart A PannebakkerPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 4, p e60459 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Wen-Juan Ma Bram Kuijper Jetske G de Boer Louis van de Zande Leo W Beukeboom Bregje Wertheim Bart A Pannebakker Absence of complementary sex determination in the parasitoid wasp genus Asobara (Hymenoptera: Braconidae).
description	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.
format	article
author	Wen-Juan Ma Bram Kuijper Jetske G de Boer Louis van de Zande Leo W Beukeboom Bregje Wertheim Bart A Pannebakker
author_facet	Wen-Juan Ma Bram Kuijper Jetske G de Boer Louis van de Zande Leo W Beukeboom Bregje Wertheim Bart A Pannebakker
author_sort	Wen-Juan Ma
title	Absence of complementary sex determination in the parasitoid wasp genus Asobara (Hymenoptera: Braconidae).
title_short	Absence of complementary sex determination in the parasitoid wasp genus Asobara (Hymenoptera: Braconidae).
title_full	Absence of complementary sex determination in the parasitoid wasp genus Asobara (Hymenoptera: Braconidae).
title_fullStr	Absence of complementary sex determination in the parasitoid wasp genus Asobara (Hymenoptera: Braconidae).
title_full_unstemmed	Absence of complementary sex determination in the parasitoid wasp genus Asobara (Hymenoptera: Braconidae).
title_sort	absence of complementary sex determination in the parasitoid wasp genus asobara (hymenoptera: braconidae).
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/2734268b22754c8a8babf6d746252e74
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Absence of complementary sex determination in the parasitoid wasp genus Asobara (Hymenoptera: Braconidae).

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