Archive for the 'Research' Category

Combating Zebra Mussels in Lake Waco

Wednesday, May 13th, 2015
Clean, drain and dry your boats to prevent the spread of zebra mussels.

Clean, drain and dry your boats to prevent the spread of zebra mussels.


This is Passport to Texas

Before zebra mussels appeared in Lake Waco, Texas Parks and Wildlife, the City of Waco and the Army Corps of Engineers worked on ways to prevent an infestation, which involved close monitoring of arriving vessels.

06–They city hired summer interns to conduct boater education and boater surveys and inspections, in an effort to try and prevent the introduction [of zebra mussels] to Lake Waco.

Brian Van Zee, Texas Parks and Wildlife Inland Fisheries Regional Director, says despite their best efforts, in the summer of 2014, a vessel previously in zebra mussel infested Lake Belton evaded their scrutiny and launched in Lake Waco. In September, City of Waco employees found zebra mussels near the boat ramp. And everyone mobilized.

27– [We thought] if we can act quickly, before the water temperature begins cooling down in the fall again, we might be able to get on top of these things. And, we had heard and seen studies where they had used these big, heavy, thick pond liners and covered an area; and you can suffocate them [zebra mussels]. So, we knew that we could get approval from the Corps of Engineers to install those and get that done pretty quickly, So, the City of Waco ordered up the tarps, they hired commercial divers, set the plan, and last fall we put ’em all in place.

Brian Van Zee shares the results of their efforts tomorrow.

The Wildlife and Sport Fish Restoration program supports our series. Get  more information about zebra mussels at texasinvasives.org.

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

Fishing: Sharelunker Program

Friday, March 13th, 2015
ShareLunker No. 562 Caught by Darrell Tompkins of Huffman, TX March 7, 2015 in Sam Rayburn, TPWD Photo by Reese Sparrow

ShareLunker No. 562 Caught by Darrell Tompkins of Huffman, TX March 7, 2015 in Sam Rayburn, TPWD Photo by Reese Sparrow


This is Passport to Texas

If you catch a 13 pound or bigger largemouth bass, your first instinct may be to take a photo with it, and then release it. Or…you could donate it to the Toyota ShareLunker program at the Texas Freshwater Fisheries Center.

04—The ShareLunker Program is probably the reason this facility is here.

Allen Forshage is Director of the Center, which is a state-of-the-art fish-care facility that contains special tanks known as the “Lunker Bunker”.

17—The way this center was built, particularly the extensive hatcheries, improved our ability to do a selective breeding program where we’ve been taking these ShareLunkers and spawning them with males that are also offspring of ShareLunkers in an effort to try to improve the genetics of fish that we put back into public lakes.

Find out how to donate a fish to the program on the Texas Parks and Wildlife website. The program will accept donations of live fish through April 30. Every time an angler donates a fish to the program they make bass fishing better for everyone.

13—One of the measures of success for the program is how many column inches are being written about the ShareLunker Program. A lot of the outdoor writers use the ShareLunker Program as a barometer to measure how good fishing is in Texas.

It’s darned good if you believe what you read. And you should. Find details about the Toyota ShareLunker Program on the Texas Parks & Wildlife website.

The Sport Fish Restoration Program supports our series and provides funding for the operations and management of the Texas Freshwater Fisheries Center.

For Texas Parks and Wildlife…I’m Cecilia Nasti

Research: Using Browse Survey to Manage Deer

Thursday, March 12th, 2015
White-tailed buck

White-tailed buck


This is Passport to Texas

Biologists can estimate deer density by observing what they’ve eaten, or browsed. Browse survey results can help guide managers to maintain healthy herds and habitat.

15— Of course, we could go out and run one of a multitude of deer counts – whether that be spotlight counts, or camera counts. This is one we do fairly regularly in the wintertime on properties to get out there and get a look at deer densities.

Wildlife biologist, Heidi Bailey, says when deer browse less tasty plants like pines, overpopulation may be the cause.

15— For instance, on most properties, if I see five percent use on some of these pines and cedars and things that they really don’t like, that’s when I start getting a red flag and thinking, Hmmm…maybe we need to increase the harvest a little bit on this property.

Increasing harvest rates can help keep habitat in balance. But not all managers remove animals from the landscape.

16—A lot of people turn to planting food plots and putting out protein feed to supplement a deer’s diet. Of course, from the wildlife biologist’s standpoint, [we] always encourage people to manipulate their existing habitat as opposed to supplementing or putting a band aide on a problem.

Find landowner technical assistance information on the Texas Parks and Wildlife website.

The Wildlife Restoration Program supports our series and works to restore and manage wildlife for the benefit of
the public.

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

Hunt | Research: Browse Survey

Wednesday, March 11th, 2015
Whitetail deer in snow.

Whitetail deer in snow.


This is Passport to Texas

An estimated four million whitetail deer roam Texas’ public and private lands; biologists help landowners determine deer density on their property by surveying what the animals eat, including “browse.”

10— Deer have all sorts of different things they’ll eat, browse being one of those items. So, essentially browse is the woody twigs and stems on plants and trees.

Heidi Bailey is a wildlife biologist in Northeast Texas. She says deer prefer some plants more than others, and calls those Blue Bell Ice Cream plants; their least favorites: Brussels sprouts. Everything in between: Meat and potatoes.

19— We go out and we look at these Bluebell plants, and we determine how much they’re eating those. Then, we’ll look at the meat and potatoes plants, and then we’ll get down to the Brussels sprouts and see how heavily the deer are eating those. And if they’re eating the Brussels sprouts plants – they’re eating a bunch of stuff they don’t care anything about – then you know you’ve got issues.

Issues like overpopulation. The browse plants that provide the best clues of this include…

12—Things like cedars, pines, American holly, sweet gum, post oak, and blackjack oak, wax myrtle. There’s lots out there, but boy, it’s not too tasty for them, for sure.

Recommendations biologists make based on browse surveys. That’s tomorrow.

The Wildlife Restoration Program supports our series and works to restore and manage wildlife for the benefit of the public.

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

Research | Hunt: Learning From Dove Lethality Study

Wednesday, February 25th, 2015
Mourning Dove

Mourning Dove


This is Passport to Texas

Lead shot is the most common load used when hunting dove in Texas. In high accumulations it is a potential environmental toxin. Texas carried out a two-year study to evaluate effectiveness of lead versus non-toxic shot, should ammunition regulations change in the future.

02—We went into this study no knowing what we would find.

Corey Mason, Wildlife Region Three Director says it was a double blind study.

23— Everyone that was in the field – the observer recording the data and the hunter pulling the trigger – they did not know what kind of ammunition they were shooting. All of the ammunition looked identical on the exterior: all in the same brass, the same hole. No one knew what they were shooting. So, it removed all of that potential bias so that the study results are as objective as they can possibly be.

Mason says Texas needed to determine if a non-toxic ammunition alternative would be as effective as lead.

19—Secondly, we needed to know that information because of our harvest management strategies in which we base the number of days, the daily bag [limit], the opportunities to hunt these birds based on current knowns. And so, if those efficiency and wounding rates were to change it could potentially have an impact on the number of days in dove season, the daily bag – all those sorts of things.

Mason says the final analysis shows virtually no difference in effectiveness of lead versus steel shot. So, for now, it’s hunter’s choice.

03— We believe in hunter choice, but we want that to be an informed hunter choice.

The Wildlife and Sport Fish Restoration Program supports our series.

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