Navigation Links
Poison: It's what's for dinner
Date:4/18/2009

t not as much as creosote bush.

Before creosote invaded the Southwest from South America, woodrats ate juniper throughout what is now the Great Basin of Utah and Nevada and the Mojave Desert of southwestern Utah, southern Nevada and inland southeastern California.

But things were changing as the last Ice Age waned. "As the glaciers were receding, creosote bush was invading," says Dearing. "The Southwestern deserts were being formed as the land was becoming hotter and drier, and creosote bush replaced juniper trees in those areas."

Woodrats also are known as packrats because they build yard-wide, 2-foot-tall "middens" using twigs, branches, pottery shards and other debris. The middens are typically above ground under juniper trees in the Great Basin and yucca in the Mojave.

Because ancient middens are preserved, scientists have analyzed their contents, which included juniper pollen, showing packrats throughout the Southwest ate juniper before the climate warmed. Creosote pollen shows the bushes had spread through the Mojave by 10,000 years ago.

"I see this as a tale of two poisons or a tale of two diets two populations of the same species that feed on very different staple foods: creosote and juniper," says Dearing. "It's like suddenly having your food coated with a different poison than you are used to. It's interesting to see the response of these animals to a natural climate change event where they were forced to change their diet and adapt to a new type of toxin."

Dearing says that as creosote invaded, some woodrats already had genes to let them eat creosote or there was a mutation in existing detoxification genes that allowed creosote consumption. Over time, Mojave woodrats with those genes were more likely to survive on creosote, while those in the Great Basin stuck to juniper.

Searching for Detoxification Genes

In the new study, Dearing and colleagues used microarrays desig
'/>"/>

Contact: Lee Siegel
leesiegel@ucomm.utah.edu
801-581-8993
University of Utah
Source:Eurekalert  

Page: 1 2 3 4 5

Related biology news :

1. Poison: Its whats for dinner
2. Excellence in open access research celebrated at BioMed Central awards dinner
3. Dinner, lecture series to honor legacy of distinguished UH professor
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Poison: It's what's for dinner
(Date:9/29/2014)... to a new Food and Brand Lab pilot study, ... participation in the National School Lunch Program (NSLP) by ... 16%! , Chefs Move to Schools (CMTS), an initiative ... schools in order to provide nutrition instruction to students ... , A CMTS event was held in an Upstate ...
(Date:9/29/2014)... team says recently identified radiation detection properties of a ... for homeland security and medical advances. , In a ... of Optics Letters , UT Arlington Physics Professor ... to fabricate transparent nanoscintillators by heating nanoparticles composed of ... formed. A scintillator refers to a material that ...
(Date:9/29/2014)... bad rap, and understandably so. The grain-of-rice-sized insects are ... of acres in the Western U.S. and Canada over ... belief, these pests may not be to blame for ... through the region. Instead, weather and topography play a ... these bark-boring beetles. , New research led by the ...
Breaking Biology News(10 mins):Chefs move to schools can increase school meal participation and vegetable intake among students 2UT Arlington researchers develop new transparent nanoscintillators for radiation detection 2UT Arlington researchers develop new transparent nanoscintillators for radiation detection 3Tree killers, yes, fire starters, no: Mountain pine beetles get a bad rap, study says 2Tree killers, yes, fire starters, no: Mountain pine beetles get a bad rap, study says 3Tree killers, yes, fire starters, no: Mountain pine beetles get a bad rap, study says 4
... both crop and ornamental plants. Each year, powdery mildew and ... intense research, little is known of the plant molecules that ... European research group lead by Ueli Grossniklaus, a plant geneticist ... Science shedding a new light on mildew susceptibility ...
... parent that takes their kid out for a walk knows ... that? Do kids and small adults walk differently from taller ... Peter Weyand from Southern Methodist University, USA, is fascinated by ... goes back to Max Kleiber,s work on resting metabolic rates ...
... are getting warmer. Conservative estimates suggest that tropical areas ... the end of this century. Does global warming spell ... at the Smithsonian Tropical Research Institute, and colleagues report ... million years ago rainforests prospered at temperatures that were ...
Cached Biology News:Fertility or powdery mildew resistance? 2Fertility or powdery mildew resistance? 3New equation calculates cost of walking for first time 2New equation calculates cost of walking for first time 3Tropical forest diversity increased during ancient global warming event 2
(Date:9/30/2014)... 30, 2014 OriginOil Inc. (OTC/QB: OOIL), ... process to clean up large quantities of water, announced ... Eckelberry reported on the launch of the company's CLEAN-FRAC™ ... provided by partner STW Resources . , Immediately ... per day (bpd) and achieved a 99.8% reduction in ...
(Date:9/30/2014)... BALTIMORE and ROCKVILLE, Md., Sept. 30, 2014 /PRNewswire/ ... private-public partnership focusing on commercializing market-relevant biohealth innovations and ... Maryland , announced today that venture capitalist, ... as a strategic advisor. Dr. Fernandez will be a ... Gap Fund, which will provide up to $50 million ...
(Date:9/30/2014)... iLab Solutions announced the results of its ... focuses on core facility operations, growth and utilization as ... , In its 4th year running, a number of ... year-over-year decrease in the percentage of revenue that comes ... the constraints of this trend. When asked, “What are ...
(Date:9/30/2014)... The custom stainless steel fabrication company HOLLOWAY AMERICA ... Boston Area Chapter of ISPE (International Society for Pharmaceutical ... Wed., Oct. 1 at Gillette Stadium Clubhouse in Foxborough, ... ISPE Boston’s long history, with more than 375 exhibitors ... , HOLLOWAY AMERICA President David Simpson is looking forward ...
Breaking Biology Technology:OriginOil, Inc. Report to Shareholders: Blue Gold in West Texas 2Seasoned Life Sciences Venture Capitalist Tania Fernandez Joins BHI to Help Manage New BioHealth Gap Fund 2iLab Solutions Announces the Results of the 2014 Core Facility Benchmarking Study 2iLab Solutions Announces the Results of the 2014 Core Facility Benchmarking Study 3HOLLOWAY AMERICA to Exhibit at ISPE Boston Product Show 2014 2HOLLOWAY AMERICA to Exhibit at ISPE Boston Product Show 2014 3
... analysis results expected in Q3 2008 -, ... Therapeutics Inc.,(TSX:FXI) ("Fralex" or the "Company"), a ... today announced the,randomization of the 100th patient ... double-blind placebo-controlled randomized clinical trial,designed to assess ...
... Calif., March 10 AutoGenomics, a leader in,developing ... be among the leading healthcare and biotechnology companies ... that will be held at the,Boston Marriott Copley ... Executive Officer will present an overview of the,company, ...
... Nuclear Security Administration has awarded a $17 million cooperative ... Park to develop advanced simulations for commercial and defense ... center will focus on the behavior and reliability of ... of Excellence chosen by the NNSA. , About 35 ...
Cached Biology Technology:Fralex reaches 100th patient milestone in fibromyalgia study 2Fralex reaches 100th patient milestone in fibromyalgia study 3Purdue leads center to simulate behavior of micro-electromechanical systems 2Purdue leads center to simulate behavior of micro-electromechanical systems 3Purdue leads center to simulate behavior of micro-electromechanical systems 4
... is a dedicated fluorometer with ... kinds of assays in industrial ... clinical applications. Cell biology, immunology ... important application areas. Robot-friendly hardware ...
... design loaded with class-leading features, the 1400 Series will ... is safe and consistent every time you use it. ... Series reduces power consumption by as much as 50% ... the life of the cabinet. Multiply this savings ...
... The Magnetic Stand-96 is designed for ... microplates and 0.2 ml PCR plates with ... clear polyacryl base in a standard SBS ... extremely strong permanent magnets guarantees easy and ...
... designed to create the ideal environment for nucleic ... 99.9C) , Variable speed control (10 to ... it be for washing or hybridizing , ... inside the chamber, ,is situated above a touch ...
Biology Products: