pink salmon
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2021 ◽  
Author(s):  
Jan Ohlberger ◽  
Eric J. Ward ◽  
Richard E. Brenner ◽  
Mary E. Hunsicker ◽  
Stormy B. Haught ◽  
...  

PLoS ONE ◽  
2021 ◽  
Vol 16 (12) ◽  
pp. e0255752
Author(s):  
Kris A. Christensen ◽  
Eric B. Rondeau ◽  
Dionne Sakhrani ◽  
Carlo A. Biagi ◽  
Hollie Johnson ◽  
...  

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.


2021 ◽  
Author(s):  
Merran Hague ◽  
Rachael Hornsby ◽  
Jessica Gill ◽  
Catherine Michielsens ◽  
Erica Jenkins ◽  
...  

2021 ◽  
Author(s):  
Tora Paulsen ◽  
Odd Terje Sandlund ◽  
Gunnel Østborg ◽  
Eva B. Thorstad ◽  
Peder Fiske ◽  
...  

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