Topic: Biology

Florida Lizards Evolve Rapidly, Within 15 Years and 20 Generations

Oct. 23, 2014

[caption id="attachment_48874" align="alignright" width="240" caption="The left hind foot of the green anole after evolution. Toe pad measurements were taken on the expanded scales at the end of the longest toe. Credit: Yoel Stuart/U. of Texas at Austin"]left hind foot of the green anole[/caption]

AUSTIN, Texas  Scientists working on islands in Florida have documented the rapid evolution of a native lizard species  in as little as 15 years  as a result of pressure from an invading lizard species, introduced from Cuba.

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Researchers Reveal How Electric Fish Evolved Their Shocking Skills Independently at Six Different Times

June 26, 2014

[caption id="attachment_46693" align="alignright" width="300" caption="New research demonstrates that the six electric fish lineages, all of which evolved independently, used "genetic toolbox" to make an electricity-generating organ for defense, predation, navigation and communication. This photo of an electric eel is by Steven Johnson."]Electric Eel[/caption]

AUSTIN, Texas  New research demonstrates that the six electric fish lineages, all of which evolved independently, used essentially the same genes and developmental and cellular pathways to make an electricity-generating organ for defense, predation, navigation and communication.

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Texas May Be Feeding its Red Drum Fish More Than They Need, Say Researchers

Sept. 23, 2013

[caption id="attachment_42226" align="alignright" width="300" caption="Illustration courtesy of Marianna Grenadier"][/caption]

Austin, TEXAS  It's not the chicken or the egg, but marine scientists at The University of Texas at Austin have answered a basic question about red drum fish and their eggs that may eventually help save the state of Texas a lot of money in hatcheries management and make fish farming more environmentally friendly.

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Researchers Discover a New Way Fish Camouflage Themselves in the Ocean

June 4, 2013

Fish can hide in the open ocean by manipulating how light reflects off their skin, according to researchers at The University of Texas at Austin. The discovery could someday lead to the development of new camouflage materials for use in the ocean, and it overturns 40 years of conventional wisdom about fish camouflage.

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Invasive Crazy Ants Are Displacing Fire Ants, Researchers Find

May 16, 2013

[caption id="attachment_40354" align="alignleft" width="300" caption="Image courtesy of Joe MacGown, Mississippi Entomological Museum"]Nylanderia_fulva_queenhead-web[/caption]

Invasive "crazy ants" are displacing fire ants in areas across the southeastern United States, according to researchers at The University of Texas at Austin. It's the latest in a history of ant invasions from the southern hemisphere and may prove to have dramatic effects on the ecosystem of the region.

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