Tag Archives: college of natural sciences

Entomology adventures with Insecta Fiesta at the UT Austin Brackenridge Field Lab

I had a great time learning about insects last weekend at the Insecta Fiesta. It was held on Saturday, April 21, 2012, at the UT Austin Brackenridge Field Lab.

You can see from the picture above that this place had a big bug problem, but that’s a good thing. (Although you can’t see it in this picture, I kept my swatter close by in case this gigantic cockroach got out of hand.)

This hissing cockroach was down to size. It was cool holding him because it felt like many dull thumbtacks poking me.

Strangely, it did not hiss for me. I think it was tired of hissing at all the people that came before me. When I put him (it?) back down, it skittered away.

Here I sit next to a homemade bug city in their butterfly garden. It’s really a refuge that everyone can make because there are many places for bugs to hide and burrow in with no fear of being squished.

Magnificent UT Austin insect collection

Dr. Tom Atkinson, research scientist with College of Natural Sciences, took us on a tour of the UT Austin Insect Collection. He was really nice and showed us their extensive collection. Although it’s not as big as Texas A&Ms, he said they’re not trying to have the biggest collection (although they have a lot!), but they are trying to specialize in the insects of this area.

They have wonderful tools for preserving and pinning insects at their field lab.

Commander Ben’s insect collection

I love collecting insects, although I have not formally pinned many of the insects in my collection. After they’ve dried out, I keep my specimens in a plastic box with dividers.

Some of my favorites, I put in small, clear card boxes, and I keep my specimens safe by putting cotton balls around them.

Here’s my “pièce de résistance“, an Ironclad Beetle that I found hanging on a screen door a few years ago. It has an extremely hard exoskeleton, and I learned that you have to use a small drill to pierce the exoskeleton, if you want to pin it. I like keeping it on a wall in my room.

I have many more insects in my collection, but four more that I really like are my:

* Click beetle
* Large walking stick
* Huge assassin beetle
* Unusual tree cricket.

Click beetles and butterflies at UT Austin

Here’s a picture of UT Austin’s click beetle collection. They are really cool because when you try to hold or catch them, they try to get away by clicking and hopping their bodies, almost like a seesaw. They feed on organic material and roots, and you’ll find them in central Texas, so be sure to look for them the next time you’re hunting insects.

Dr. Atkinson showed us a beautiful display of butterflies, but sadly, he said it was not very scientifically useful because the insects were not labeled or identified. Be sure to label the insects in your collection!

He said that everyone can catch the larger bugs, and they have tons in their collection. (Note to graduate students, collect more smaller insects!)

Update: Learn more about North and Central American bark and ambrosia beetles at Dr. Atkinson’s Bark Beetles website.

Beware of food with insects!

They had tons of different insect food to taste, and a lot were made with crickets. I think that people are more open to eating crickets and not mealworms, especially live ones, as that can make you squeamish. (Take a look at me eating a mealworm at Explore UT.)

They were sold out of the following when I stopped by:

  • Cajun crickets, which were dried, baked, and flavored with cajun spices
  • Salt and pepper crickets, which were also dried and baked, but with salt and pepper

The graduate student who I talked with (and who I met at Explore UT too!) said that the least favorite snacks were the ones where people could see the insects. She said that the critter popcorn crunch, which was caramel popcorn with caramelized beetle larva, was not selling well, probably because it was too easy to see the larva. (I didn’t want it either.)

I didn’t want to eat any because I was still recovering from having all four of my wisdom teeth out earlier in the week…

Cricket spitting contest

But that didn’t stop me from taking part in the cricket spitting contest. At the front of the line, where people were waiting to spit crickets, someone held a container full of crickets that had been frozen, but were thawed out.

I grabbed one of the crickets with my hand, and I was initially wary of putting one in my mouth, but I finally stuffed it in (and went back for a second time too.) I think I made it up to 13 or 14 feet both times without anyone getting hit.

They started out with 1000 crickets, but the activity was so popular that they soon began to run out.

On spider safari

Here I stand with a very nice man, Spider Joe (Joe Lapp). He didn’t like spiders, but preferred insects when he was younger. But he grew to like them and became very knowledgeable about them.

He talked about spiders to our group and asked what’s the difference between insects and spiders? The other kids had a lot of answers, like six or eight legs, but the key answer is that an insect has three body segments: head, thorax, and abdomen. Spiders only have a head and abdomen.

As part of his activity, he walked around through the tall grass with his spider collecting net. He dumped the insects and spiders that he caught on his inspecting canvas. He identified the arachnids that he caught and passed them around in small containers for everyone to see. He mostly caught orb weavers, like Charlotte in Charlotte’s Web. He also found a wolf spider that I liked because it has a cool way of hunting prey. (They don’t wait for the prey to come to them.)

He also showed us a brown recluse in a clear container. It was small and difficult to see, but I was able to make out a fiddle on its back.

Our group walked along a wilderness trail around Brackenridge Field Lab, and Spider Joe stopped along the way to have us look for spiders. In such a wonderfully wooded area, there were a good many spiders. That was a very fun activity. No tarantulas sadly, as I really like tarantulas.

Spider Joe was a really nice man, and if you ever get a chance to get a guided tour from him, jump at the chance.

A secret find!

Here I stand by their experimental gardens. Who knows what secret and mysterious creatures are inside! (I took a peek, but it looks like a bunch of plants…hey…wait a minute, was that an invasive?)

I really enjoyed the Insecta Fiesta. The professors and graduate students at the Brackenridge Field Lab did a great job. It was wonderful to be around so many bugs and so many people who loved nature so much.

Your friend,
Commander Ben

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Filed under Brackenridge Field Lab, Click beetle, College of Natural Sciences, Crickets, Dr. Tom Atkinson, Entomology, Hissing cockroach, Insecta Fiesta, Insects, Ironclad beetle, Orb spiders, Spider Joe, Spider safari, Spiders, UT Austin Insect Collection

Invasive Jewel Cichlid Shatters Native Ecosystems

Although an attractive fish for aquariums, when West African Jewel Cichlids invade the ecosystems in Northern Mexico, they can cause havoc. Ms. Laura Dugan describes her research on this invasive fish, and how she is trying to determine the impacts of the species’ competition with natives and factors for their distribution and spread.

Ms. Dugan, a doctoral student at the University of Texas at Austin, also talked about her lab experiments into the temperature profile of the fish, including their:

  • Thermal range (determined as 14-40 degrees Celsius)
  • Temperature preference (reviewing the results now)
  • Optimal temperature for growth (will be researching soon)

She is also researching the competition between this invasive fish and native fish that live in northern Mexico too. She will weigh the fish before and after the experiments to see if they grew.

Thanks for talking with me Ms. Dugan and for helping me make my first video about invasive fish. I also found your blog talking about your past research.

Science Under the Stars

I had a chance to talk with Ms. Dugan about her research when I attended this month’s Science Under the Stars talk at the UT Austin Brackenridge Field Laboratory.

I learned about Science Under the Stars in May 2011 when I entered my very first science video as part of their video contest. I won first place (yea!), and they gave me a fantastic navy blue shirt (thanks!) with their logo and a fire ant (invasive!) carrying off the state of Texas.

Before this month’s talk, they had a neat activity to help you learn about Charles Darwin’s Finches. They showed plates with different foods, such as rice, beans, and chocolate covered walnuts, and they also had different tweezers and tongs. They showed how the finches developed very specialized beaks (the utensils) to pick up the different sized food.

Conflict Avoidance: How NOT Competing Can Be The Ticket to Success

For the March 2012 Science Under the Stars talk, Ms. Genevieve Smith, a graduate student with UT Austin-Integrative Biology, gave a great presentation.

She gave a lot of examples and talked about many scientists, including one who observed a lot of different species of birds that lived in a tree. He found that the different species lived in different parts of the tree and avoided conflict with each other.

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Filed under College of Natural Sciences, Darwin’s Finches, Jewel Cichlid, Laura Dugan, Ms. Genevieve Smith, Science Under the Stars, University of Texas

The Fascinating, Hidden World of Plants at Explore UT

There’s more to plants than you know! At this year’s Explore UT, Dr. Jennifer Moon gave a great presentation about how plants can detect light, respond to touch, establish defenses, and communicate with their kin. Here are some highlights from her talk.

How do plants know when to germinate and grow?

Importance of Red (R) Light and Far Red (FR) Light for Plants

Dr. Moon talked about the importance of red light and far red light for plants. If plants detect more red light, they like to grow or germinate. If there’s more far red light, like in shade, it’ll deter germination or cause the plant to grow tall or sideways to look for sunlight.

Will plants grow more if you touch them?

No. If you touch them a lot, they’ll stay short because they’re afraid that if they grow too tall, they’ll be pulled out of the ground, like from a passing animal or wind.

Do plants like to be talked to?

Yes, but it’s not because of what you say. They like the carbon dioxide (CO2) that you’re giving them.

Can a plant know which bug is eating it?

Dr. Moon described how a plant knows if you’ve cut it or if something is munching on it.

Plants can detect insect saliva

The secret is the plant’s ability to detect insect saliva.

Plants know the difference between mechanical and insect damage

They’re smart enough to know if you’re cutting it with scissors. If they detect that it’s a bug eating it, they’ll set up defenses.

Plants release protease inhibitors for defense

Some plants release a protein that causes insects that are eating the plant to starve and die. They can continue to eat the plant, but they can’t digest it. They’ll die and won’t be able to lay more eggs to create a new generation of pests to attack the plant.

Other plants can release a hormone that attracts wasps that will attack the insects or lay eggs on them.

Other plant defenses

I also learned that spices and flavors are part of a plant’s defense system. They may deter insects and some animals, but they make our food very flavorful. My favorite herb is basil, and my favorite spice is cinnamon.

Venus Fly Trap

Dr. Moon showed us some great plant videos by Roger P. Hangarter from Plants-In-Motion.

Watch this video that shows why it takes more than just a brief touch to cause a Venus Fly Trap to shut. It takes energy for a plant to close it’s leaves, so it’s best to do so when you think you have prey.

Venus Fly Traps need the nitrogen from insects, since these plants typically grow in bogs that have little nitrogen available.

Dr. Moon and Explore UT

Dr. Moon is a lecturer with the School of Biological Sciences in the College of Natural Sciences at University of Texas at Austin, and she has a cool website for the botanically curious at greenseedling.com.

Each year, the University of Texas at Austin holds a campus wide event with fun activities and education for kids and prospective students of all ages. This year’s explore Explore UT event was held on March 3, 2012.

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Filed under College of Natural Sciences, Dr. Jennifer Moon, Explore UT, University of Texas

Hands on: Sheep Heart and Lungs at Explore UT

Dr. Jan Machart gives us a hands on tour of a sheep’s heart and lungs, including the function of the trachea, diaphragm, alveoli, aorta, left ventricle, and more. Dr. Machart is a lecturer with the School of Biological Sciences in the College of Natural Sciences at UT Austin.

The exhibits also showed a pair of sheep lungs. The first was healthy and looked great. The second had been treated to show the effects of smoking. It was black and disgusting. Don’t smoke!!!!

Each year, the University of Texas at Austin holds a campus wide event with fun activities and education for kids and prospective students of all ages. This year’s explore Explore UT event was held on March 3, 2012.

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Filed under College of Natural Sciences, Dr. Jan Machart, Explore UT, Physiology, University of Texas