Archive for the 'Giant Salvinia' Category

Help Halt Aquatic Invasive Species

Wednesday, July 26th, 2017

This is Passport to Texas

You know how Smokey Bear says:

[Smokey Bear] Remember: only you can prevent forest fires.

He’s reminding us of our personal responsibility when we’re outdoors. It’s as true on the water as it is on the land.

Aquatic invasive species can quickly infect water bodies unless we take preventive measures. With summer boating season underway, Texas Parks and Wildlife asks boaters to help to stop the spread giant salvinia and zebra mussels which can travel from lake to lake on boats and trailers.

Boaters: “Clean, Drain and Dry” you boats, trailers, and gear every time you travel from one waterbody to another. A video on the TPW YouTube channel demonstrates the proper steps.

First, inspect the boat, trailer and gear. Clean off any vegetation, mud or foreign objects that you find. Second, pull the plug and drain all the water from the boat, including the motor, the bilge, live wells, and bait buckets before leaving the lake. Third, open all compartments and live wells and allow your boat, trailer and gear to completely dry for a week or more before entering another water body.

For complete instructions on how to clean, drain and dry your boat and trailer to prevent the spread of aquatic invasive species, go to

The Sportfish Restoration Program Supports our series.

For Texas Parks and Wildlife, I’m Cecilia Nasti.

More Funding to Fight Invasive Species

Friday, May 13th, 2016
Aquatic imvasives

Aquatic imvasives

This is Passport to Texas

Record funding approved by the Texas Legislature is launching new fronts in the war on aquatic invasive species.

With $6.6 million dollars in appropriations, this year and next, Texas Parks and Wildlife will ramp up an unprecedented effort to control and stop the spread of aquatic invasive plants and creatures.

Some of the aquatic invasive species that will receive the agency’s attention include: giant salvinia and zebra mussels covering Texas lakes, to giant reed and salt cedar smothering rivers and streams, to exotic fish that compete with Texas natives and alter natural ecosystems.

One major category of work is Aquatic Invasive Plant Management—projects focused on management of aquatic invasive plants on public waters to enhance boater access for recreation, and management of riparian invasive plants in target areas to improve water quality and quantity.

In Texas, the economic impacts of aquatic invasives are far-reaching, costing the state billions of dollars annually, including threatening to undermine a recreational freshwater fishing industry worth more than $4 billion-dollars.

That’s our show. The Texas Parks and Wildlife Foundation supports our series and helps keep Texas wild with support of proud members across the state. Find out more at

For Texas Parks and Wildlife…I’m Cecilia Nasti

Flooding and Aquatic Invasive Species

Thursday, August 20th, 2015
Zebra Mussels

Zebra Mussels

This is Passport to Texas

Texas lakes and rivers are full and flowing again thanks to an influx of water brought on by heavy spring rains. The downside is we could see the spread of invasive species as a result.

06- We always have to be vigilant about invasive species: zebra mussels…giant salvinia…water hyacinths…

Inland fisheries’ Dave Terre says improved water levels and boat ramp accessibility means more boaters on the water. He adds everyone must do what is in their control to prevent the spread of these species.

09- Make sure that you clean your boats and trailers; and dry your boats–and drain your boats–before going onto other water bodies. It’s the law.

Cleaning, draining and drying boats–that’s within our control. Mother Nature is not. When she soaked Texas, it’s possible she also flushed zebra mussels downstream.

25- Certainly, we’ll be monitoring that situation through time, but at this point it’s really unknown what impact these floods will have on the spread of zebra mussels across our state. But, anglers and boaters still need to be mindful about spreading these species by boat. [Clean, drain & dry] is the one thing we do have control over, and one thing that we can do. We’re always concerned about invasive species trying to keep them out of our water bodies. So we need to control what we can control.

Find information about invasive species at

The Sport Fish Restoration program supports our series.

For Texas Parks and Wildlife, I’m Cecilia Nasti.

Aquatic Invasives

Monday, May 11th, 2015
Giant Salvinia overtaking Lake Conroe

Giant Salvinia overtaking Lake Conroe

This is Passport to Texas

Giant Salvinia…tilapia…zebra mussels… are just three of the many non-native, invasive aquatic species threatening Texas rivers and lakes.

11-As a whole, anytime you get an invasive species into the state–whether it be a new one or one we are currently dealing with–they certainly cause a lot of economic as well as environmental negative impact.

Brian Van Zee is a TPW Inland Fisheries Regional Director.

15- When an invasive species gets introduced into a new system, they typically have very few predators or natural control mechanisms in place. So, they are able to take over and dominate those systems; that just creates a lot of problems for a lot of our native species.

Giant salvinia quickly creates huge, thick mats of vegetation on lakes, reducing light penetration that results in oxygen depletion; tilapia outcompete native fishes for food, thus threatening their populations; and zebra mussels adhere to municipal water intake pipes,
blocking water flow, and costing cities millions of dollars in repairs and maintenance.

05-We have seven lakes in the state that have confirmed zebra mussels in them.

Brian Van Zee returns tomorrow to talk about the latest zebra mussel infestation and how it happened. Learn more about aquatic invasives at

The Sport Fish Restoration program supports our series and works to increase fishing and boating opportunities in Texas.

For Texas Parks and Wildlife…I’m Cecilia Nasti.