Healthy juvenile white sturgeon at the Nechako White Sturgeon Recovery Initiative’s hatchery in Vanderhoof. The young sturgeon are being preyed upon by otters in the Nechako watershed. Nechako White Sturgeon Recovery Initiative photo

Healthy juvenile white sturgeon at the Nechako White Sturgeon Recovery Initiative’s hatchery in Vanderhoof. The young sturgeon are being preyed upon by otters in the Nechako watershed. Nechako White Sturgeon Recovery Initiative photo

Northern B.C. city dealing with its own otter problem

Vanderhoof’s Nechako White Sturgeon Recovery Initiative working to increase fish survival rate

With a greedy Vancouver-based otter making provincial headlines as it feasts on expensive fish and evades capture, Vanderhoof has its own otter issues.

Nechako White Sturgeon, a species listed under federal government’s Species At Risk Act (SARA) are being preyed upon by otter in the Nechako watershed.

Unlike in Vancouver, where there’s just one troublesome otter, the SARA-listed sturgeon face a number of the predators, says Wayne Salewski, the chair of the Nechako White Sturgeon Recovery Initiative’s Community Working Group.

“I think we have families of otters who, like all good otters, like fish.”

The sturgeon travel the length and breadth of the Nechako watershed, swimming as far north as Takla Lake and as far west as Stuart Lake, but always returning to a stretch of water downtown Vanderhoof to spawn.

The Nechako White Sturgeon Recovery Initiative in the city runs a hatchery, catching female and male sturgeon, stripping the eggs gently and returning the adult fish to the river, and then hand-fertilizing the eggs to raise juvenile sturgeon. The young sturgeon are later released into the river at nine different sites, some with radio transmitters in them, to allow the Initiative to track the fish and their survival rate.

Salewski says they’ve discovered in the past few years that the juvenile fish are being preyed upon by otter in the river system.

“Over the years we started to recognize that those fish with radio transmitters seemed to get preyed on quite heavily by otters. We’d find that out by finding the radio transmitter up on the shore,” explains Salewski.

“Most interestingly, we find a lot of these transmitters in the latrines of otters. Otters are very social animals, very clean, and they like the same bathroom sites.”

Salewski says the otter don’t ingest the transmitters, but eat around them and spit them out. Volunteers with the Nechako White Sturgeon Recovery Initiative are able to use their radios to find the discarded transmitters, which are reusable, says Salewski. “That’s one good thing about the whole situation.”

The group has now begun to put together a program to discover the impact the otters are making to the survival, and overall recovery, of the at-risk white sturgeon.

Salewski says it’s been a learning curve from the start.

“With every year of experience we are having to make changes in our practices to increase survivial. In the first few years, we would put a fish into the water at two to three inches in length. … We could quickly see things like seagulls swarming our release sites and having a heyday. So that caused us to say, ‘Well, we will raise them bigger and that should look after that.’”

But the larger fish, at 12 to 14 inches, were excellent fodder for osprey and eagles, says Salewski.

“No self-respecting eagle would go after a two-inch fish, but it would easily go after a 12- to 14-inch fish.”

Now, the volunteers at the hatchery have decided to release the fish after two years.

“That is our reaction. … If otters are chasing these [12-inch fish], perhaps if they were bigger and faster, maybe an otter wouldn’t challenge the idea of taking them on. That’s where we are – supersizing our fish and seeing if that gives us a better survival rate.”

Salewski says the current low water levels aren’t helping, as visibility is good for predators.

“It’s the circle of life. We are not naive, but there are many questions that are left behind. Are we in fact making otters healthier because they now have a constant supply of food? And will the healthy mommy produce more healthy babies and our problem will get larger because there are more of them? These are obvious questions and things that need to be answered,” says Salewski.

Find out more about the Nechako White Sturgeon Recovery Initiative here.

READ MORE: Conservation and education collide at sturgeon spawning



newsroom@ominecaexpress.com

Like us on Facebook and follow us on Twitter

Get local stories you won't find anywhere else right to your inbox.
Sign up here

Just Posted

Kelly Chadwick of Port McNeill tested positive for COVID-19 on Dec. 3. (Submitted)
Port McNeill mother confirms positive COVID-19 test

The mother of two is self-isolating and following all protocols

Port Hardy Museum curator Jane Hutton is looking to find out who is in this photo. (Port Hardy Museum photo)
Port Hardy museum wants to know if you can identify who’s in this photo

If you can help with identifying the photo, please contact 250-949-8143.

Speed limit change on Hwy 19 north of Port McNeill. (Zoe Ducklow photo)
New speed limit near Cluxewe Resort on Hwy 19

The Ministry of Transportation and Infrastructure made the change Dec. 1

Felled spruce and cedar trees waiting to be stripped, sorted and hauled down Island. (Zoe Ducklow photo)
Kwakiutl First Nation angry at logging in Douglas Treaty land

The nation is calling on government to honour the Douglas Treaty

The Christmas Tree being put back up in the Thunderbird Mall parking lot. (Thunderbird Mall photo)
Giant Christmas tree returns to Thunderbird Mall Parking lot

At the end of the 2019, extreme winds knocked over the community Christmas tree.

Unofficial holidays: Here’s what people are celebrating for the week of Dec. 6 to 12

Mountain Day, Dewey Decimal System Day and Lard Day are all coming up this week

Demonstrators, organized by the Public Fishery Alliance, outside the downtown Vancouver offices of Fisheries and Oceans Canada July 6 demand the marking of all hatchery chinook to allow for a sustainable public fishery while wild stocks recover. (Public Fishery Alliance Facebook photo)
Angry B.C. anglers see petition tabled in House of Commons

Salmon fishers demand better access to the healthy stocks in the public fishery

(Hotel Zed/Flytographer)
B.C. hotel grants couple 18 years of free stays after making baby on Valentines Day

Hotel Zed has announced a Kelowna couple has received free Valentines Day stays for next 18 years

Farmers raise slogans during a protest on a highway at the Delhi-Haryana state border, India, Thursday, Dec. 3, 2020. Prime Minister Justin Trudeau rejected the diplomatic scolding Canada’s envoy to India received on Friday for his recent comments in support of protesting Indian farmers. Tens of thousands of farmers have descended upon the borders of New Delhi to protest new farming laws that they say will open them to corporate exploitation. THE CANADIAN PRESS/AP-Manish Swarup
Trudeau brushes off India’s criticism for standing with farmers in anti-Modi protests

The High Commission of India in Ottawa had no comment when contacted Friday

Montreal Alouettes’ Michael Sam is set to make his pro football debut as he warms up before the first half of a CFL game against the Ottawa Redblacks in Ottawa on Friday, Aug. 7, 2015. Sam became the first publicly gay player to be drafted in the NFL. He signed with the Montreal Alouettes after being released by St. Louis, but abruptly left after playing one game. THE CANADIAN PRESS/Justin Tang
Study finds Canada a ‘laggard’ on homophobia in sports

Among females, 44 per cent of Canadians who’ve come out to teammates reported being victimized

Nurse Kath Olmstead prepares a shot as the world’s biggest study of a possible COVID-19 vaccine, developed by the National Institutes of Health and Moderna Inc., gets underway Monday, July 27, 2020, in Binghamton, N.Y. U.S. biotech firm Moderna says its vaccine is showing signs of producing lasting immunity to COVID-19, and that it will have as many as many as 125 million doses available by the end of March. THE CANADIAN PRESS/AP-Hans Pennink
Canada orders more COVID vaccines, refines advice on first doses as cases reach 400K

Canada recorded its 300,000th case of COVID-19 on Nov. 16

Apartments are seen lit up in downtown Vancouver as people are encouraged to stay home during the global COVID-19 pandemic on Thursday, Dec. 3, 2020. British Columbia’s deputy provincial health officer says provincewide data show the most important area B.C. must tackle in its response to the COVID-19 pandemic is health inequity. THE CANADIAN PRESS/Marissa Tiel
Age, income among top factors affecting well-being during pandemic, B.C. survey shows

Among respondents earning $20,000 a year or less, more than 41 per cent reported concern about food insecurity

Information about the number of COVID-19 cases in Abbotsford and other municipalities poses a danger to the public, the Provincial Health Services Authority says. (Photo: Tyler Olsen/Abbotsford News)
More city-level COVID-19 data would jeopardize public health, B.C. provincial health agency says

Agency refuses to release weekly COVID-19 case counts, citing privacy and public health concerns

Victoria-based driving instructors are concerned for their own and the community’s safety with the continued number of residents from COVID hotspots in the Lower Mainland coming to the city to take their driving road tests. (Black Press Media file photo)
Students from COVID hotspots travel to Vancouver Island for driving tests

Union leader calls on government to institute stronger travel ban

Most Read