The pink salmon genome: Uncovering the genomic consequences of a two-year life cycle

Author:

Christensen Kris A.ORCID,Rondeau Eric B.,Sakhrani Dionne,Biagi Carlo A.ORCID,Johnson Hollie,Joshi Jay,Flores Anne-Marie,Leelakumari Sreeja,Moore Richard,Pandoh Pawan K.,Withler Ruth E.,Beacham Terry D.,Leggatt Rosalind A.,Tarpey Carolyn M.ORCID,Seeb Lisa W.,Seeb James E.,Jones Steven J. M.ORCID,Devlin Robert H.,Koop Ben F.

Abstract

Pink salmon (Oncorhynchus gorbuscha) adults are the smallest of the five Pacific salmon native to the western Pacific Ocean. Pink salmon are also the most abundant of these species and account for a large proportion of the commercial value of the salmon fishery worldwide. A two-year life history of pink salmon generates temporally isolated populations that spawn either in even-years or odd-years. To uncover the influence of this genetic isolation, reference genome assemblies were generated for each year-class and whole genome re-sequencing data was collected from salmon of both year-classes. The salmon were sampled from six Canadian rivers and one Japanese river. At multiple centromeres we identified peaks of Fst between year-classes that were millions of base-pairs long. The largest Fst peak was also associated with a million base-pair chromosomal polymorphism found in the odd-year genome near a centromere. These Fst peaks may be the result of a centromere drive or a combination of reduced recombination and genetic drift, and they could influence speciation. Other regions of the genome influenced by odd-year and even-year temporal isolation and tentatively under selection were mostly associated with genes related to immune function, organ development/maintenance, and behaviour.

Funder

canadian regulatory system for biotechnology

fisheries and oceans canada

genome canada

genome british columbia

génome québec

Publisher

Public Library of Science (PLoS)

Subject

Multidisciplinary

Reference188 articles.

1. Statistics–NPAFC [Internet]. [cited 2021 Jan 13]. Available from: https://npafc.org/statistics/

2. Response of Pink salmon to climate warming in the northern Bering Sea.;EV Farley;Deep Sea Res Part II Top Stud Oceanogr.,2020

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3