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Home / 2017 / May / 25 / Ancient genetic markers in sockeye salmon can help manage healthier fish stocks
Research

Ancient genetic markers in sockeye salmon can help manage healthier fish stocks

May 25, 2017

New genetic markers in sockeye salmon that can help improve management of fish populations. Photo credit: Kyle Hawes

New genetic markers in sockeye salmon that can help improve management of fish populations. Photo credit: Kyle Hawes

The markers, called single nucleotide polymorphisms, are individual locations in the genome that, in this case, allow researchers to distinguish between the different variants of sockeye salmon: those that spawn on lakeshore or island beaches and those that spawn in rivers and streams.

“The obvious practical application is in fisheries management,” says study senior author Michael Russello, biology professor at UBC Okanagan. “Until now, it was quite challenging and even impossible, in some cases, to identify these different variants outside the spawning season. But the new genetic markers provide a fast, inexpensive and accurate way to tell them apart.”

Michael Russello is a biology professor at UBC Okanagan.

Michael Russello is a biology professor at UBC Okanagan.

The ability for fisheries managers to precisely identify and monitor the abundance of different sockeye salmon populations is important to helping maintain healthy fish stocks, says Russello. The Ecological and Conservation Genomics Lab is working with fisheries managers to help classify kokanee, a freshwater form of sockeye salmon, to more accurately estimate population numbers, an important key in monitoring the impacts of changes to their habitat and hopefully in preventing future declines in the salmon run.

Russello and former UBC Okanagan post-doctoral associate Andrew Veale (now at the University of Otago) studied populations across the range of sockeye salmon in the United States, Canada, Russia and Japan at these areas in the genome. What they found was remarkably consistent genetic patterns for shore- and stream-spawning sockeye, despite spawning locations spanning different continents.

“What’s really exciting are the clues this provides for better understanding the genetic basis of how new forms arise in nature,” adds Russello. “In this case, we can estimate that the different sockeye salmon types diverged some 3.8 million years ago, much earlier than we would have predicted. There is incredible potential here to better understand the complex evolutionary history of this species.”

The study was published in Scientific Reports, an online journal from the publishers of Nature, and was supported by funding from Genome British Columbia, Okanagan Aquatic Enterprises, BC Ministry of Forests, Lands and Natural Resource, and BC Hydro.

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Media Contact

Nathan Skolski
E-mail: nathan.skolski@ubc.ca

Content type: Media Release
More content from: Biology, Irving K Barber School of Arts and Sciences (prior July 2020)

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About UBC Okanagan

UBC’s Okanagan campus is an innovative hub for research and learning founded in partnership with local Indigenous peoples, the Syilx Okanagan Nation, in whose traditional, ancestral and unceded territory the campus resides. The most established and influential global rankings all consistently place UBC in the top five per cent of universities in the world, and among the top three Canadian universities.

The Okanagan campus combines a globally recognized UBC education with a tight-knit and entrepreneurial community that welcomes students and faculty from around the world in British Columbia’s stunning Okanagan Valley. For more visit ok.ubc.ca.

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