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Photograph by S. Price Bullfrogs have been widely introduced around the world as the primary species for commercial frog-leg farming. Frog farms were promoted in BC after the Second World War as an employment venture for returning veterans. These ventures were unprofitable and the bullfrogs were released into the wild. They were also imported by aquatic garden supply companies for stocking backyard ponds. They spread from the original release sites and have now established populations on Vancouver Island between Victoria and Campbell River as well as on some Gulf Islands and the Lower Mainland. |
Bullfrogs can prey on and out-compete native frogs. They are also thought to spread a newly discovered frog disease, called Bd or chytrid fungus, although they themselves not affected by this disease. It is very important that we try to prevent the further range expansion of Bullfrogs on Vancouver Island in order to preserve native biodiversity in our wetlands.
