Tanner crabs (Chionoecetes tanneri) captured in June 2016 at 1,250 metres below the surface at Barkley Canyon. (Photo courtesy UVic’s Ocean Networks Canada)

Tanner crabs (Chionoecetes tanneri) captured in June 2016 at 1,250 metres below the surface at Barkley Canyon. (Photo courtesy UVic’s Ocean Networks Canada)

WATCH: Methane-snacking crabs adaptive to climate change, UVic researchers say

A joint research study shows that B.C. crabs are making the most of methane seeps

Tanner crabs living on the seafloor of the northeast Pacific Ocean may be adaptive to climate change, according to a recent study by the University of Victoria’s Ocean Networks Canada and the Oregon State University.

The crabs were originally thought to exclusively eat phytoplankton until researchers observed them snacking on methane-filled bacteria about 1.2 km deep in B.C.’s oceans.

“Evidence shows the crabs’ diet is diverse and includes bacteria that processes methane,” said Fabio De Leo, co-author of the study and senior scientist at the University of Victoria’s Ocean Networks Canada, in an emailed statement.

ALSO READ: Viral video shows Sooke resident calling out illegal crab fishers

“This suggests that their populations may be able to adapt if their common food source becomes scarce. By studying and collecting these specimens, we can learn how a variety of sea-dwelling species are adapting to ongoing changes linked to climate change.”

The crabs were observed near methane seeps, also known as cold seeps, which are continental-margin areas where methane comes up from the ocean floor.

Researchers observed the unusual sight of a Tanner crab flipping up on its chest – near the seep due to methane build –so they collected specimens and found biochemical markers in the crabs’ muscles, stomachs and tissues.

Researchers also observed the crabs migrating, suggesting that Tanner crabs could be forwarding methane-based food energy to other seafloor-dwelling species.

ALSO READ: Invasive crab spotted near Sooke

“The thinking used to be that the marine food web relied almost solely on phytoplankton dropping down through the water column and fertilizing the depths,” says Andrew Thurber, a marine ecologist at Oregon State University and co-author on the study. “Now we know that this viewpoint isn’t complete and there may be many more facets to it.”

The study began in 2012 and findings were recently published in the Frontiers in Marine Science magazine.

nicole.crescenzi@vicnews.com


Send a Tweet: @NicoleCrescenzi

Like us on Facebook  

UVic

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

Just Posted

Surrey RCMP are investigating a reported assault at Panorama Ridge Secondary. (Shane MacKichan photos)
UPDATE: Third youth arrested after assault with weapon at Panorama Ridge Secondary in Surrey

School placed on a ‘hold and secure’ until safety of all students confirmed

Jennifer Brooks with a stone tablet that adorns the memorial to her son Hudson, outside the South Surrey RCMP detachment parkade where he was fatally shot by police in July 2015. (File photo)
Coroner’s inquest underway to examine Hudson Brooks’ 2015 police-shooting death

Witness recalls ‘feeling scared’ for South Surrey man in moments before RCMP fired fatal shots

Frannie Warwick, as Betsy Hardup, at Surrey Arts Centre for a recording of “The Fairy-Tale Mysteries” radio play series produced by Fraser Valley Gilbert & Sullivan Society. (Photo: facebook.com/FVGSS)
Video recording sessions available at Surrey Arts Centre, with fees and rules attached

Sessions ‘will be held in strict compliance with current Public Health orders and COVID-19 protocols’

Delta’s Jodi Macpherson won $25,029 in a Keno draw on Jan. 25, 2021. (BC Lottery Corporation photo)
Delta woman lands $25k keno prize

Jodi Macpherson purchased her ticket from the Town Pantry on 56th Street in Tsawwassen

Image Surrey.ca
Surrey to pony up one-third of cost to cover Cloverdale lacrosse box in 2022

This will be at the Cloverdale Athletic Park at 64th Avenue and 168th Street

Langley resident Carrie MacKay shared a video showing how stairs are a challenge after spending weeks in hospital battling COVID-19 (Special to Langley Advance Times)
VIDEO: Stairs a challenge for B.C. woman who chronicled COVID-19 battle

‘I can now walk for six (to) 10 minutes a day’

Riverside Calvary Church in Walnut Grove. (Langley Advance Times file)
B.C. is ‘stereotyping’ churches as riskier for COVID than other spaces, lawyer argues

Judge said that freedom of expression, religion are not at issue in the case

B.C. Premier Gordon Campbell gets acquainted with Tsawwassen First Nation Chief Kim Baird’s 10-month-old daughter Sophia, husband Steve and four-year-old Amy at the B.C. legislature before a ceremony to endorse the Tsawwassen Treaty, Oct. 15, 2007. (Sharon Tiffin/Black Press)
Indigenous consent comes first and last for B.C. industrial projects

Environment minister can still approve permits without consent

Cannabis bought in British Columbia (Ashley Wadhwani/Black Press Media)
Is it time to start thinking about greener ways to package cannabis?

Packaging suppliers are still figuring eco-friendly and affordable packaging options that fit the mandates of Cannabis Regulations

After a routine rescue of an injured hiker, Ridge Meadows Search and Rescue noted there have been four injury rescues on well-groomed trails in recent months. (Special to The News)
Injured hiker rescued from Golden Ears park

Be prepared in the backcountry, warns Ridge Meadows Search and Rescue

B.C.’s court of appeal in Vancouver. (File photo: Tom Zytaruk)
Kootenay man appeals 7-year conviction for New Year’s Eve kidnapping, beating

Brandon Coons, 27, was convicted on five charges, including assault with a weapon

An investigation is underway after two VPD officers were recorded posing for pictures near a dead body at Third Beach on Feb. 24. (Screen grab/Zachary Ratcliff)
Vancouver officers placed on desk duty after filmed posing next to dead body

Pair put in ‘non-deployable, admin positions’ as the investigation into their conduct continues

Vancouver Giants president, governor and majority owner Ron Toigo welcomed the provincial announcement made on Monday, Mar. 1, 2021 that the province could soon allow WHL teams to resume competitive play. (Vancouver Giants/Special to Langley Advance Times)
Return to play news welcomed by Vancouver Giants team

rOwner, coach and players pleased by report WHL could soon resume play in B.C.

(Black Press file photo)
Homicide team to look into death of 11-year-old Agassiz boy

Agassiz RCMP were called out Friday to assist with a child in medical distress

Most Read