Menu

Image of the Day: Evolution Underground

The lay of the land shapes the diversity of groundwater-dependent salamanders.

Jan 15, 2019
Carolyn Wilke

ABOVE: Cascade Caverns Salamanders (Eurycea latitans) captured from the Honey Creek Cave above ground (right) and below (left)
IMAGE COURTESY OF THOMAS J. DEVITT

Species of salamander branch off and evolve in patterns influenced by the shape of the land and where water flows in an aquifer, researchers reported yesterday (January 14) in PNAS. To understand their diversity, the scientists studied hundreds of these amphibians from the Edwards–Trinity aquifer, a groundwater system in Texas. 

For instance, a population of Cascade Caverns Salamanders (Eurycea latitans) has two different forms, one from above ground and another more suited to life below. Some of the salamanders living in the aquifer may become endangered in the next 100 years as the climate warms and a growing human population sucks up the groundwater, the authors say.

T.J. Devitt et al., "Species delimitation in endangered groundwater salamanders: Implications for aquifer management and biodiversity conservation," PNASdoi:10.5061/dryad.3k5c0sh, 2019.

April 2019

Will Car T Cells Smash Tumors?

New trials take the therapy beyond the blood

Marketplace

Sponsored Product Updates

Getting More Consistent Results by Knowing the Quality of Your Protein
Getting More Consistent Results by Knowing the Quality of Your Protein
Download this guide from NanoTemper to learn how to identify and evaluate the quality of your protein samples!
Myth Busting: The Best Way to Use Pure Water in the Lab
Myth Busting: The Best Way to Use Pure Water in the Lab
Download this white paper from ELGA LabWater to learn about the role of pure water in the laboratory and the advantages of in-house water purification!
Shimadzu's New Nexera UHPLC Series with AI and IoT Enhancements Sets Industry Standard for Intelligence, Efficiency and Design
Shimadzu's New Nexera UHPLC Series with AI and IoT Enhancements Sets Industry Standard for Intelligence, Efficiency and Design
Shimadzu Corporation announces the release of the Nexera Ultra High-Performance Liquid Chromatograph series, incorporating artificial intelligence as Analytical Intelligence, allowing systems to detect and resolve issues automatically. The Nexera series makes lab management simple by integrating IoT and device networking, enabling users to easily review instrument status, optimize resource allocation, and achieve higher throughput.
IDT lowers genomic barriers with powerful rhAmpSeq™ targeted sequencing system
IDT lowers genomic barriers with powerful rhAmpSeq™ targeted sequencing system
Increasing accuracy and reducing cost barriers, IDT’s innovative system delivers simple and cost-effective amplicon sequencing