A community in the Comox Valley region of central Vancouver Island is banding together to eliminate invasive American bullfrogs from nearby lakes and waterways. The Tsolum River Restoration Society is launching workshops to help residents deploy tadpole traps, citing the threat these large bullfrogs pose to indigenous species.
American bullfrogs, known for their size compared to other frogs in British Columbia, have a voracious appetite that includes frogs, salamanders, insects, and even small mammals and reptiles, according to the Invasive Species Council of B.C. One resident regularly checks tadpole traps at Maple Lake, just north of Cumberland, in an effort to safeguard fragile ecosystems.
Bruce Moffat, a society volunteer, initially took a “live and let live” approach when he first noticed bullfrog tadpoles a few years ago. However, upon discovering a significant population of invasive tadpoles in Maple Lake last year, Moffat realized the urgent need for intervention to prevent the decimation of local wildlife.
Moffat emphasizes the severe impact that a thriving bullfrog population can have on amphibians, fish, and insects in the area, with potential repercussions on birds and larger species. The Invasive Species Council of B.C. highlights the threat posed by bullfrogs to at-risk species like the northern red-legged frog and the western painted turtle.
Gail Wallin, the executive director of the council, stresses the importance of documenting the activities of American bullfrogs, as capturing or relocating them is illegal. While eradicating the species entirely may be challenging, controlling their populations through methods like trapping and euthanizing them is encouraged.
Wallin commends the efforts of Comox Valley residents in setting up tadpole traps, which she believes will have a short-term impact on local bullfrog populations. Ongoing community engagement is crucial in maintaining effective population control measures.
Katie Gair, the project coordinator at the Tsolum River Restoration Society, explains that workshops are being held to educate residents on constructing tadpole traps using affordable materials. These traps are designed to attract and temporarily capture bullfrog tadpoles, empowering community members to combat the invasive species.
Gair underscores the importance of identifying bullfrog tadpoles by their distinctive features, such as a cream-colored belly and mottled green speckling. Removing bullfrogs is just one aspect of a comprehensive strategy to safeguard native species in the region.
The Tsolum River Restoration Society’s efforts aim to raise awareness and engage the community in conservation practices to protect the local ecosystem from the detrimental effects of American bullfrogs.
