Columbia Shuswap Invasive Species Society warns of American bullfrog

The Columbia Shuswap Invasive Species Society is warning people to be on the lookout for the American bullfrog

The American bullfrog is considered a threat to many native frog species.

The Columbia Shuswap Invasive Species Society is warning people to be on the lookout for the American bullfrog, an invasive species that is spreading rapidly across British Columbia.

“While many frog populations are in decline worldwide, the American bullfrog (Lithobates catesbeianus) has been spreading rapidly in B.C. and outcompeting (or eating) other native frogs and animals,” the organization wrote in a news release.

The American bullfrog is native to eastern North America but was introduced to the western United States through human interaction. According to CSISS, bullfrog farms were established on Vancouver Island in the 1930s in an attempt to market frog legs. Frogs released from those farms are thought to be the source of the bullfrogs invading the B.C. mainland.

They were also imported to B.C. for use in aquatic gardens and as pets and eventually found their way to wetlands from ponds and aquariums. They are currently found on Vancouver Island, the Lower Mainland, the South Okanagan and Central Kootenay border region.

“In this new environment, bullfrogs are lacking their usual predators (like snapping turtles) to keep the population in check,” says CSISS.

Bullfrogs are the largest frog in North American, reaching up to 20 centimetres in length and 800 grams in weight. They have smooth skin without warts, the males have yellow throats, and they have large circular eardrums behind the eyes. Their size and strength make them great competitors and they often can defeat native amphibians when competing for food and territory.

The eat almost anything they can, including native amphibians, fish, fish eggs, rodents, snakes, turtles, songbirds and ducklings. They are considered a threat to several species of native frogs, including the western toad, Pacific chorus frog, Columbia spotted frog, the Great Basin spadefoot in the South Okanagan (which is threatened), and the Northern leopard frog (which is endangered).

“There is evidence that new or increasing bullfrog populations drastically decreases native frog populations,” says CSISS.

CSISS says there are no known bullfrogs in the Columbia-Shuswap region, and the nearest population is near Creston. If you see a bullfrog, contact CSISS at 1-855-785-9333 or info@columbiashuswapinvasives.org.

 

Just Posted

City of Revelstoke pays $6.66 million in wages in 2018

Top earner was former CAO Alan Chabot

UPDATE: Man presumed dead after boat capsizes south of Revelstoke

One Alberta man made it to shore and was rescued, the other is still missing

Making interesting beer and acting like it’s normal

Rumpus Beer Co. has been 9 years of dreaming and 15 months in the making

Bold youth-led initiatives address local needs

Revelstoke Community Foundation joins national community challenge

Okanagan-Shuswap weather: Unsettled skies dominate the week’s forecast

A chance of thunderstorms is in the forecast for much of the Okanagan-Shuswap.

Air Canada reviewing how crew left sleeping passenger on parked plane

In a Facebook post, the woman said she woke up ‘all alone’ on a ‘cold dark’ aircraft

Only legal pot shop between Vancouver and Kamloops now open

Private cannabis store on Skwah land in Chilliwack is first B.C. licensee to be Indigenous owned

Canadian communities responding to climate change

New research highlights state of local adaptation planning in Canada

Victoria woman in L.A. hospital after she was run over twice

Lynn Phillips has suffered from multiple broken bones and internal bleeding

‘Text neck’ causing bone spurs to grow from millennials’ skulls, researchers say

Technology use from early childhood causing abnormal bone growths in 41 per cent of young adults

B.C. judge defies lawyers and adds six months to man’s sex assault sentence

‘I find the joint submission is contrary to the public interest and I’m rejecting it’

Tiny Yorkshire terrier survives days on remote B.C. island

ROAM rescue crews, family searched for dog, missing in Greater Victoria for days

Pelmewash Parkway opening is the latest milestone in First Nations-government relations

Lake Country officially opens the Pelmewash Parkway with a ceremonial ribbon cutting

Man presumed dead after boat capsizes in Columbia River

Search and rescue efforts recovered a life jacket

Most Read