impact they have. They invaded environments in Florida and Texas and are also an invasive species to southeast Asia, where they been a major source of rice crop damage.
a mixed bag, Massimi said. impacts may not be that severe. They could have an impact on the submerged aquatic vegetation. Air Force Flyknit Womens
The snails were first sighted in the Donner and Chacahoula areas in 2008. A separate population was also found in Bayou Black. Apple snails have been sighted in other parts of Louisiana, including Gretna, Lafitte and in the Barataria Basin.
The first sign that apple snails have established themselves in a waterway is their eggs, Massimi said. The snails crawl out of the water during warm months and lay bright pink eggs a few feet above the waterline.
In the lush swamps of south Louisiana, tropical invasive plants and animals can cause problems in the environment, thriving to the point where they outgrow native species.
Massimi said two cold winters in 2009 and 2010 helped to knock back the snails population in Terrebonne.
The aquatic snails can lay between 200 600 tiny eggs in one bunch. They continue to lay eggs as long as the weather is warm and could be reproducing through fall. They do have some local predators, including raccoons, minks, otters, wading birds, turtles and alligators. When they very small, even crawfish may eat them.
They may also spread through Terrebonne intricately connected system of drainage canals, he said.
really very little you can do but sit back and watch the invasion, said Michael Massimi, invasive species director with the Barataria Terrebonne National Estuary Program in Thibodaux.
Apple snails have been documented in Florida, Texas and California, but it only recently that they began popping up in Louisiana, much to the concern of scientists.
But they reproduce so rapidly that predators can keep up, Massimi said. It would take another long, cold winter or a strong drought to battle back the snails.
The snails are common in the pet trade, Nike Air Force 1 Low Vachetta Tan
With multiple, growing populations in Terrebonne, Massimi said he worried the snails could spread even further hitching a Nike Air Force 1 Women Black ride on boats or carried by curious children.
Apple snails are new to the system, and scientists can only speculate on the Nike Air Force 1 Low Canada
There are some effective pesticides, but they also kill all other species in the process, Massimi said.
Massimi said, and that likely how they reached Terrebonne, probably dumped into local waterways by a disenchanted aquarium owner.
Enola Elliot, a Houma resident, said her sister spotted the eggs near her house in Schriever. When she called to report them, wildlife officials told her to knock the egg clusters into the water.
Large nuisance snails showing up again
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