The tadpoles were transported by car; plane and kayak to their new home. (Mark Yuen/Vancouver Aquarium)

Endangered tadpoles travel via plane, car and kayak to their new home

Northern leopard tadpoles raised in the Vancouver Aquarium were released in the Kootenays last week

  • Jun. 13, 2018 12:24 p.m.

More than 1,600 endangered Northern leopard frog tadpoles were released into a natural habitat in the Kootenays on Wednesday, June 6.

This is the sixth consecutive breeding year for the Oceanwise conservation program that aims to boost the wild population of the Northern leopard frog – the most endangered amphibian in B.C.

“This year was a banner year for our Northern leopard frog conservation program and we couldn’t be more pleased,” said Kris Rossing, senior biologist at Vancouver Aquarium. “We added two large frog ponds to the existing three and, as a result, saw improved breeding, more fertilized egg masses, and more tadpoles.”

Two large frog ponds were constructed at the aquarium this year, in addition to the three already use for the project which is an Ocean Wise initiative. (Oceanwise)

The Vancouver Aquarium has raised and released more than 7,100 Northern leopard frog tadpoles since 2013, in collaboration with the Northern Leopard Frog Recovery Team.

For the past six years, the frogs have been dedicated to re-establishing a population in a natural habitat near Brisco, B.C.

For the past two years, the recovery team has heard adult males calling at this release site; this is a positive indication that the frogs are surviving winter and reaching sexual maturity, and that the program is successful in helping the vulnerable Rocky Mountain population.

Early in the morning on June 6, the tadpoles were transported to the Kootenays, first by car to the Vancouver International airport, then by plane to Cranbrook, B.C.

Received by members of the recovery team, the tadpoles were then transported by car for an additional two hours, and then by kayak to their new home in the marshy wetlands along the Columbia River near the Alberta border.

The tadpoles were released by aquarium staff in collaboration with the Northern Leopard Frog Recovery Team. (Mark Yuen/Vancouver Aquarium)

The Vancouver Aquarium was the first aquarium to breed the amphibians as part of an assurance population and is part of a worldwide effort, along with other zoos and aquariums, to conserve this and other amphibian species under the Amphibian Ark (AArk) project.

A key component of the propagation process involves the use of a hormone treatment called Amphiplex created by Dr. Vance Trudeau at the University of Ottawa.

The treatment, which is a painless injection into the frogs, has been used to help induce spawning and spur the animals into amplexus — when the male mounts and holds the female frog to induce ovulation and then fertilizes the eggs as they are laid.

Beginning in the 1970s, populations of Northern leopard frogs across Western Canada declined by the millions, making them one of the most at-risk amphibian species, especially in B.C.

Research continues into the cause of these sharp declines.

The Rocky Mountain population that occurs in B.C. is listed as endangered by the Committee on the Status of Endangered Wildlife in Canada and is on the provincial Red List.

Once found at many sites in the Kootenay and Okanagan regions, the Rocky Mountain population began to decrease to a point where only one wild population, in Creston Valley, existed.

An adult Northern leopard frog. (Vancouver Aquarium)

In 2004, a second population was reintroduced in the Upper Kootenay Floodplain, near Bummers Flats.

A third population was reintroduced in 2013 at a site in the Columbia Marshes with tadpoles produced at Vancouver Aquarium as part of the recovery effort for this species.

There are two other populations of Northern leopard frogs in Canada, the Prairie Northern leopard frogs have reoccupied some of their former range on the Prairies, and as a result have been down listed to be of special concern by the endangered wildlife committee.

Northern leopard frogs in Eastern Canada are not at risk.

The recovery team implements conservation actions as outlined in the Northern Leopard Frog recovery strategy.

 

Just Posted

Hometown Hockey co-host ready for West Kelowna visit

Tara Slone and Ron MacLean host the Hometown Hockey festival this weekend

UPDATE: Firefighter blown back from explosion at fire above Kelowna art gallery

A fire was reported at the Pope’sGallery of BC Art & Photography

Youth losing human connection in digital era

Forum offers advice to Kelowna parents about managing a child’s social media screen time

Okanagan youth invited to speak at TEDx event in Kelowna

Application deadine Jan. 31 to be selected as TEDx Youth presenter

Rare ‘super blood wolf moon’ takes to the skies this Sunday

Celestial event happens only three times this century

Ex-Mountie investigating ‘Surrey six’ murders pleads guilty to obstruction

Derek Brassington entered his plea in B.C. Supreme Court on Friday

Man blames his loud car radio, sirens for crash with B.C. ambulance

Tribunal rejects bid to recoup ICBC costs after crash deemed 100-per-cent his fault

RECALL: Salmon Village maple salmon nuggets

Customers warned not to eat product due to possible Listeria contamination

More than 100,000 toxic toys named in Canada-wide recall

Plastic doll contains levels of phthalates over allowable limit and may pose chemical hazard

Fashion Fridays: Inspirational gym outfits

Kim XO, helps to keep you looking good on Fashion Fridays on the Black Press Media Network

UPDATE: Motorists concerned for dog running loose on Coquihalla

Drivers are warning to watch for a dog running spotted running down Highway 5

Company issues lifetime ban after man jumps from cruise ship

Nick Naydev posted the video last week showing him standing on the balcony of the Symphony of the Seas

Parents in this B.C. city can no longer opt kids out of class for personal beliefs

Change comes as part of ‘big overhaul’ of school district’s learning resources policy approved by board

Most Read