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

SidFest 7 ready to rock the Mary Winspear Centre

The Bankes Brothers and Madrona Drive headlining May 24 concert

Carbon dioxide at highest levels for over 2.5 million years, expert warns of 100 years of disruption

CO2 levels rising rapidly, now higher than at any point in humanity’s history

Mad Hatter’s Ball offers laughs in support of Boys and Girls Club

Annual fundraising event features improv performances at McPherson Playhouse May 24

Penelakut filmmaker Steve Sxwithul’txw finds success in film and TV

Cop-turned-storyteller reaches back to his past for Tribal Police Files

Choir offers a capella take on Beatles hits

Soundings will perform concerts in Oak Bay and Sidney May 24 and 25

VIDEO: Horseshoe pitching association appeals to Greater Victora youngsters

Youth horseshoe pitching club offers fun for all ages, says GVHPA

Update: Mother dead, child in critical condition after carbon monoxide poisoning at Shuswap campground

The woman was found unresponsive insider her tent and the youth was taken via air ambulance to hospital

Canada’s parole officers say correctional system has reached breaking point

About half of Canada’s federal parole officers work inside penitentiaries and correctional institutions

Montreal researchers create audible hockey puck for visually impaired players

Three years ago, Gilles Ouellet came up with the idea for a puck that makes a continuous sound

Vancouver Island MusicFest: ‘House bands’ from the golden age of rock and R&B

Some of America’s greatest session musicians are coming to the Comox Valley this summer

Former B.C. Greyhound bus drivers head to Penticton for goodbye party

Big bash runs until Sunday, funded by drink cans left behind on busses over the years

Boy, 12, arrested after allegedly pulling a knife on another child at a Surrey park

The child was later released into his parents’ custody as Surrey RCMP continue their investigation

Full-scale search underway for missing kayaker on Okanagan Lake

Kelowna Paddle Centre member Zygmunt Janiewicz, 71, failed to return from his ‘daily kayak’ on the lake

Bucks hammer Raptors 125-103 to take 2-0 playoff series lead

Toronto heads home in a hole after second loss to Milwaukee

Most Read