No need to discriminate? Reproductive diploid males in a parasitoid with complementary sex determination.

Diploid males in hymenopterans are generally either inviable or sterile, thus imposing a severe genetic load on populations. In species with the widespread single locus complementary sex determination (sl-CSD), sex depends on the genotype at one single locus with multiple alleles. Haploid (hemizygou...

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Autores principales:	Jan Elias, Dominique Mazzi, Silvia Dorn
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2009
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b2f014f084fc48c9be42b93ef56d9c3c
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spelling	oai:doaj.org-article:b2f014f084fc48c9be42b93ef56d9c3c2021-11-25T06:21:56ZNo need to discriminate? Reproductive diploid males in a parasitoid with complementary sex determination.1932-620310.1371/journal.pone.0006024https://doaj.org/article/b2f014f084fc48c9be42b93ef56d9c3c2009-06-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/19551142/?tool=EBIhttps://doaj.org/toc/1932-6203Diploid males in hymenopterans are generally either inviable or sterile, thus imposing a severe genetic load on populations. In species with the widespread single locus complementary sex determination (sl-CSD), sex depends on the genotype at one single locus with multiple alleles. Haploid (hemizygous) individuals are always males. Diploid individuals develop into females when heterozygous and into males when homozygous at the sex determining locus. Our comparison of the mating and reproductive success of haploid and diploid males revealed that diploid males of the braconid parasitoid Cotesia glomerata sire viable and fertile diploid daughters. Females mated to diploid males, however, produced fewer daughters than females mated to haploid males. Nevertheless, females did not discriminate against diploid males as mating partners. Diploid males initiated courtship display sooner than haploid males and were larger in body size. Although in most species so far examined diploid males were recognized as genetic dead ends, we present a second example of a species with sl-CSD and commonly occurring functionally reproductive diploid males. Our study suggests that functionally reproductive diploid males might not be as rare as hitherto assumed. We argue that the frequent occurrence of inbreeding in combination with imperfect behavioural adaptations towards its avoidance promote the evolution of diploid male fertility.Jan EliasDominique MazziSilvia DornPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 4, Iss 6, p e6024 (2009)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jan Elias Dominique Mazzi Silvia Dorn No need to discriminate? Reproductive diploid males in a parasitoid with complementary sex determination.
description	Diploid males in hymenopterans are generally either inviable or sterile, thus imposing a severe genetic load on populations. In species with the widespread single locus complementary sex determination (sl-CSD), sex depends on the genotype at one single locus with multiple alleles. Haploid (hemizygous) individuals are always males. Diploid individuals develop into females when heterozygous and into males when homozygous at the sex determining locus. Our comparison of the mating and reproductive success of haploid and diploid males revealed that diploid males of the braconid parasitoid Cotesia glomerata sire viable and fertile diploid daughters. Females mated to diploid males, however, produced fewer daughters than females mated to haploid males. Nevertheless, females did not discriminate against diploid males as mating partners. Diploid males initiated courtship display sooner than haploid males and were larger in body size. Although in most species so far examined diploid males were recognized as genetic dead ends, we present a second example of a species with sl-CSD and commonly occurring functionally reproductive diploid males. Our study suggests that functionally reproductive diploid males might not be as rare as hitherto assumed. We argue that the frequent occurrence of inbreeding in combination with imperfect behavioural adaptations towards its avoidance promote the evolution of diploid male fertility.
format	article
author	Jan Elias Dominique Mazzi Silvia Dorn
author_facet	Jan Elias Dominique Mazzi Silvia Dorn
author_sort	Jan Elias
title	No need to discriminate? Reproductive diploid males in a parasitoid with complementary sex determination.
title_short	No need to discriminate? Reproductive diploid males in a parasitoid with complementary sex determination.
title_full	No need to discriminate? Reproductive diploid males in a parasitoid with complementary sex determination.
title_fullStr	No need to discriminate? Reproductive diploid males in a parasitoid with complementary sex determination.
title_full_unstemmed	No need to discriminate? Reproductive diploid males in a parasitoid with complementary sex determination.
title_sort	no need to discriminate? reproductive diploid males in a parasitoid with complementary sex determination.
publisher	Public Library of Science (PLoS)
publishDate	2009
url	https://doaj.org/article/b2f014f084fc48c9be42b93ef56d9c3c
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No need to discriminate? Reproductive diploid males in a parasitoid with complementary sex determination.

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