Four-year study suggests only a third of tagged fish made it through Whitehorse fish ladder

Four-year study suggests only a third of tagged fish made it through Whitehorse fish ladder

By Haley Ritchie

Source: yukon news

2/9/2021

As a four-year study on Chinook salmon in the Yukon wraps up, the researcher says he is hoping it might raise questions about how fish are navigating the Whitehorse fish ladder.

William Twardek, a PhD candidate from Carleton University, has spent four years studying how the Upper Yukon River Chinook salmon manoeuvered around the Whitehorse hydro dam.

“The objective of this wasn’t so much to necessarily find solutions or change the design of the fish ladder, its real focus was to provide an evaluation as to how well the fish ladder is working,” Twardek said.

The results of Twardek’s study haven’t been published yet, but he is sharing preliminary results with the community.

Chinook are considered strong swimmers, but the salmon in the Yukon River already work very hard to get to the fish ladder. Entering the river in Alaska, the salmon travel nearly 3,000 kilometres to get to their home spawning sites, making it one of the longest inland salmon migrations on earth.

Yukon River

Salmon, Chinook

Continue...

News Id		Source	Stamp	country
2326	Invasive fish could eradicate Tennessee bass species	wjhl	2022-10-04	US
2327	Scientists Track Eels to Their Ocean Breeding Grounds in World-First	sciencealert	2022-10-19	EU
2328	Yale researchers create a new amphibious turtle robot with shape-shifting limbs	interestingengineering	2022-10-16	US
2329	B.C. First Nations seek action on sturgeon deaths, after court blamed declines on dam	globalnews	2022-10-13	CA
2330	Sambro, N.S., fisher, fish buyer, violated law during unmonitored halibut offloads, judge rules	CBC News	2022-10-13	CA
2331	America's largest trout producer gains ASC certification	The Fish Site	2022-10-13	US
2332	Пришла осень, вода остывает, у рыбы закончилось кормовое изобилие	Охотники.ру	2022-10-06	RU
2333	Low water levels along French river help to reveal medieval fishery	medievalists	2022-10-06	FR
2334	Competitive fishing has a cheating problem, and these Canadian anglers say they've seen it happen	CBC News	2022-10-06	CA
2335	Tiny Fish at Center of 1970s Supreme Court Case Achieves Redemption	cnet	2022-10-06	US
2336	25,000 Pounds of Invasive Carp Taken in Missouri’s Grand River	sportfishingmag	2022-10-06	US
2337	Pair of anglers embroiled in Lake Erie fishing cheating controversy indicted on felony charges	Fox News	2022-10-12	US
2338	The link between trout genetics and sustainability	The Fish Site	2022-10-14	FR
2339	Новые методы фиксации численности рыбы в водоемах России	Рыболовство.	2022-10-13	RU
2340	Объевшись мальков горбуши	Охотники.ру	2022-10-04	RU
2341	"Fishing can teach you life lessons" Words of wisdom from the streams of Appalachia	wlos	2022-09-25	US
2342	Angler reels pending-record blue catfish from Tennessee river	usatoday	2022-09-26	US
2343	Young man illegally fishing at MacRitchie Reservoir throws fish back into water	mothership	2022-09-27	SG
2344	fishing tournament highlights critical role oyster reefs play in Chesapeake Bay	CBS Baltimore	2022-09-27	US
2345	5th grader reels in fish her dad says measured over 8 feet	click2houston	2022-09-28	US
2346	Poland blames toxic algae for Oder river fish kill	gulf news	2022-09-29	PL
2347	Evidence of illegal fishing discovered at reef	jersey evening post	2022-09-25	ES
2348	'Undesirable' fish species found in western Kansas lake	hayspost	2022-09-29	US
2349	WA government pushes ahead with nine-month fishing ban despite 'draconian' label	adc	2022-09-30	AU
2350	They leaped at the chance to hook mahi-mahi. But L.A.’s hottest fish is hard to catch	latimes	2022-09-26	US