AgResearch
Browse

File(s) not publicly available

Male–female relatedness at specific SNP-linkage groups influences cryptic female choice in Chinook salmon (Oncorhynchus tshawytscha)

journal contribution
posted on 2023-05-03, 19:08 authored by Cornelia Gessner, Sheri Johnson, Paul Fisher, Shannon ClarkeShannon Clarke, Kim Rutherford, Jane Symonds, Neil Gemmell
In a range of taxa, the relatedness between mates influences both pre- and post-mating processes of sexual selection. However, relatively little is known about the genetic loci facilitating such a bias, with the exception of the major histocompatibility complex. Here, we performed tightly controlled replicated in vitro fertilization trials to explore the impact of relatedness on two possible mechanisms of cryptic female choice (CFC) in Chinook salmon (Oncorhynchus tshawytscha). We tested (i) whether relatedness of mates, assessed using 682 single nucleotide polymorphisms (SNPs)on 29 SNP-linkage groups (LGs), biases a male’s sperm velocity in ovarian fluid (a parameter previously shown to predict male fertilization success), and (ii) whether relatedness of mates governs fertilization success via other mechanisms, probably via sperm –egg interactions. We found that relatedness on three LGs explained the variation in sperm velocity, and relatedness on two LGs explained fertilization success, which might indicate the presence of genes important in sperm –ovarian fluid and sperm–egg interactions in these genomic regions. Mapping of the SNPs on these LGs to the rainbow trout genome revealed two genes that affect fertility in humans and represent candidate genes for further studies. Our results thereby provide a novel contribution to the understanding of the mechanism of CFC.

History

Rights statement

© 2017 The Author(s) Published by the Royal Society. All rights reserved.

Language

  • English

Does this contain Māori information or data?

  • No

Publisher

Royal Society

Journal title

Proceedings of the Royal Society. B, Biological sciences

ISSN

0962-8452

Citation

Geßner, C., Johnson, S. L, Fisher, P., Clarke, S., Rutherford, K., Symonds, J., & Gemmell, N. J. (2017). Male–female relatedness at specific SNP-linkage groups influences cryptic female choice in Chinook salmon (Oncorhynchus tshawytscha). Proceedings of the Royal Society. B, Biological Sciences, 284(1859). doi:10.1098/rspb.2017.0853

Contract number

A24322

Job code

13251X19

Usage metrics

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC