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  Recombination in the eggs and sperm in a simultaneously hermaphroditic vertebrate

Theodosiou, L., McMillan, W., & Puebla, O. (2016). Recombination in the eggs and sperm in a simultaneously hermaphroditic vertebrate. Proceedings of the Royal Society B: Biological Sciences, 283(1844). doi:10.1098/rspb.2016.1821.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-3AD0-3 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-2058-E
Genre: Journal Article

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Theodosiou, L.1, Author              
McMillan, W.O., Author
Puebla, O., Author
Affiliations:
1Emmy-Noether-Group Community Dynamics, Department Evolutionary Ecology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_2068285              

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Free keywords: Animalia; Hypoplectrus; Hypoplectrus nigricans; Pisces; Serranidae; Vertebrata
 Abstract: When there is no recombination (achiasmy) in one sex, it is in the heterogametic one. This observation is so consistent that it constitutes one of the few patterns in biology that may be regarded as a ‘rule’ and Haldane (Haldane 1922 J. Genet. 12, 101–109. (doi:10.1007/BF02983075)) proposed that it might be driven by selection against recombination in the sex chromosomes. Yet differences in recombination rates between the sexes (heterochiasmy) have also been reported in hermaphroditic species that lack sex chromosomes. In plants—the vast majority of which are hermaphroditic—selection at the haploid stage has been proposed to drive heterochiasmy. Yet few data are available for hermaphroditic animals, and barely any for hermaphroditic vertebrates. Here, we leverage reciprocal crosses between two black hamlets (Hypoplectrus nigricans, Serranidae), simultaneously hermaphroditic reef fishes from the wider Caribbean, to generate high-density egg-and spermspecific linkage maps for each parent. We find globally higher recombination rates in the eggs, with dramatically pronounced heterochiasmy at the chromosome peripheries. We suggest that this pattern may be due to female meiotic drive, and that this process may be an important source of heterochiasmy in animals. We also identify a large non-recombining region that may play a role in speciation and local adaptation in Hypoplectrus. © 2016 The Author(s) Published by the Royal Society. All rights reserved.

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Language(s): eng - English
 Dates: 2016-08-182016-11-142016-12-142016
 Publication Status: Published in print
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 Rev. Method: -
 Identifiers: DOI: 10.1098/rspb.2016.1821
BibTex Citekey: Theodosiou2016
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Title: Proceedings of the Royal Society B: Biological Sciences
  Abbreviation : Proc. R. Soc. B
Source Genre: Journal
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Publ. Info: London : Royal Society
Pages: - Volume / Issue: 283 (1844) Sequence Number: - Start / End Page: - Identifier: ISSN: 0962-8452
CoNE: /journals/resource/110975500577295_2