This past April 13th, during our Spring Fling Festival, an unwelcome discovery was made. One of our volunteers was dip-netting in the pond with kids, as part of a pond study, and discovered a live Apple Snail in the Cypress Pond (along with a few bright pink egg masses).
Apple Snails are a non-native invasive species of freshwater snail from South America. They are very common in the pet/aquarium trade as a display species. When some people want to break down their aquaria, they dump unwanted pets into local water bodies, like bayous, creeks, lakes, and ponds. Because of this, Apple Snails have become a part of aquatic eco-systems across the South, especially in Houston and Florida. They can be rather harmful to eco-systems where they have been introduced, eating up much of the native water plants.
We immediately sprung into action, and have been attempting to physically remove them from the Cypress Pond, as well as hunting down their egg masses and destroying them. Apple Snails lay their eggs in clusters above the water line, on emergent vegetation, so they are fairly easy to find (also they are a very bright pink). So far, we have removed 3 live snails from the pond, and destroyed around 12 egg masses. The snails now live comfortably in a volunteer’s aquarium.
We continue to check back at the pond every day. Thankfully, it’s a small pond, and easy to manage. In other larger eco-systems where they are released, they are very difficult to manage for. We’ll keep you updated on our efforts to remove this invasive species from our park.