Archive for the 'SFWR' Category

Guadalupe Bass–Solving the Hybrid Problem

Wednesday, February 10th, 2010

This is Passport to Texas

For more than a decade, researchers at the Heart of the Hills Fisheries Science Center in Kerrville have battled the hybrid progeny of Guadalupe bass—the state fish of Texas—and the introduced Smallmouth bass.

We’re raising thousands of pure Guadalupe bass here at the research station. And every year we stock them back into nature. Basically, what we’re doing is replacing the hybrids that are out there with these pure Guadalupe bass. And we’ll let nature take its course form there.

That’s Gary Garrett, who initiated the Guadalupe bass recovery program. The fish exists only in the Texas Hill Country—in the headwaters of streams that drain the Edward’s Plateau.

Shortly after non-native smallmouth bass were introduced to Texas waters, they bred with native bass, resulting in an explosion of hybrids. But using a technique called “saturation stocking,” Garrett and his crew have made exceptional progress.

So far we’re seeing here in Johnson Creek, where we began eh study, we started where 30 percent of the fish were hybrids. And that wasn’t stable—it was still increasing when we started. It is now down to around three percent. Which is excellent! Top go from thirty to three is great. Now we want to go from three to zero.

And Garrett expects to reach zero in the next four to five years.

That’s our show… we receive support from the SF Restoration program…For Texas Parks and Wildlife…I’m Cecilia Nasti.

Guadalupe Bass–A Hybrid Problem

Tuesday, February 9th, 2010

This is Passport to Texas

Some ideas seem good when you first have them. Then after some time passes—not so much. Take smallmouth bass, for example, and their effect on the Guadalupe bass population.

Small mouth bass, of course, are not native to Texas, but were brought in as an additional sport fish. The problem is they can’t tell each other apart. Even though they look very different, but evidently, they act similar enough behaviorally that they’ll reproduce—and they have hybrids.

That’s Gary Garrett, Director of the Watershed Conservation Program. So, what’s wrong with hybrids, anyway?

Hybrids, by definition, are halfway between the parents. So, they’re not as well adapted for their environment; they may do well in the short run, but in the long haul, they’re really not going to be as good a species.

Besides, they’re the state fish of Texas, occurring only in the Hill Country. And, well, you just don’t mess with Texas.

The other thing we’re now seeing a little bit is that these hybrids are now also crossing with our largemouth bass…which is yet another problem we want to avoid.

And you definitely don’t mess with largemouth bass. But, we’ve started to turn the tide on these hybrids with saturation stocking.

And we’re confident that in the next four or five years we’re going to be able to solve this problem.

That’s our show… we receive support from the SF Restoration program…For Texas Parks and Wildlife…I’m Cecilia Nasti.

Volunteer: Abandoned Crab Trap Cleanup

Thursday, February 4th, 2010

This is Passport to Texas

Since 2002, twenty-six thousand derelict crab traps have been hauled from Texas bays.

Through our program we have documented over forty species of organisms that are caught in these traps that include game fish, and commercially important fish, and even Diamond back terrapins which are a species of special concern.

That’s Art Morris is a biologist with Coastal Fisheries. He says Parks and Wildlife is gearing up for the annual Crab Trap clean up, February 19-28. Volunteers are needed.

Anybody can volunteer, however, we primarily need people with boats, and particularly air boats. But there are jobs for people that don’t have a boat. We need people to unload boats; we need people to maybe sometimes to go out with people that will have crew members to go out with them. We’ll provide gloves; we’ll have tarps for boats. You don’t need to sign up for anything. We would like you to call ahead of time so we can get an estimate of how many people are going to come to that site. Most of our work’s going to be done in San Antonio bay, north, because that’s where most of the crabbing effort goes on. But anybody can volunteer, and they can do it on their own—anytime from February 19 through 28th.

The main cleanup event is February 20 from 8:00 to noon; check the TPW website for details. Morris warns to remove traps only during Feb. 19-28 as it is illegal all other times as traps are private property.

That’s our show…with support from the Sport Fish Restoration Program…For Texas Parks and Wildlife…I’m Cecilia Nasti

Abandoned Crab Traps

Wednesday, February 3rd, 2010

This is Passport to Texas

There are ghosts in the gulf that silently trap and kill thousands of marine species annually.

They are a perpetual trapping machine. When something gets caught in there, it has nothing to eat and it dies, and it becomes bait and it attracts other fish and other organisms.

That’s Art Morris…ghost buster. Actually, he’s a biologist with Coastal Fisheries. The entities he’s after are abandoned crab traps…adrift in the gulf…ghost fishing.

And one of the key things about this, because they’re targeting for crabs, that’s the number one species that we see—the targeted organisms is what we’re losing to these derelict traps.

Weather and vandalism are the primary reasons why traps end up adrift, indiscriminately ensnaring crustaceans and other sea life. Morris says since 2002, twenty-six thousand of these A.W.O.L. traps have been hauled from Texas bays.

A single trap can kill 26 blue crabs per trap per year. And we can extrapolate those numbers out and we estimate somewhere in the area of half million blue crabs are saved through this program alone—or have to date.

Morris hasn’t removed these traps alone—he’s had a lot of help from volunteers during annual crab trap clean ups. Your chance to help rid the gulf of ghost fishing happens later this month…and we’ll tell you about it tomorrow.

That’s our show…with support from the Sport Fish Restoration Program…For Texas Parks and Wildlife…I’m Cecilia Nasti

Recreational Landowners: Wildlife Management Associations

Wednesday, January 20th, 2010

This is Passport to Texas

As more people move from the country to the city, large tracts of farm and ranch land are being divided into smaller parcels to accommodate urban dwellers’ need for rural retreats.

More and more of our land is being fragmented and broken up. And so, small acreage land holdings are more common, especially in the eastern half of the state. You know, we’re talking fifty acres to two hundred acres.

Linda Campbell directs the private lands program at Texas Parks and Wildlife. Because habitat fragmentation negatively impacts wildlife, neighboring landowners are encouraged to work together to lessen the problem.

We encourage landowners to join with their neighbors in what are called landowner cooperatives, or wildlife management associations. They’re becoming much more common, and landowners working together can get a lot more done for wildlife; they impact more habitat when they work together. And they can accomplish common goals. And, so, we very much encourage and work with groups of landowners to develop these landowner driven cooperatives.

Visit the Texas Parks and Wildlife web site for complete details on how landowner cooperatives can receive free, confidential technical assistance.

That’s our show…we receive support from the Wildlife Restoration program

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