Navigation Links
Moved by religion: Mexican cavefish develop resistance to toxin
Date:11/5/2010

COLLEGE STATION, Nov. 4, 2010 A centuries-old religious ceremony of an indigenous people in southern Mexico has led to small evolutionary changes in a local species of fish, according to researchers from Texas A&M University.

Since before the arrival of Christopher Columbus to the New World, the Zoque people of southern Mexico would venture each year during the Easter season deep into the sulfuric cave Cueva del Azufre to implore their deities for a bountiful rain season. As part of the annual ritual, they release into the cave's waters a distinctive, leaf-bound paste made of lime and the ground-up root of the barbasco plant, a natural fish toxin. Believing the cave's fish to be gifts from their gods, they scoop up their poisoned prey to feed upon until their crops are ready to harvest.

However, a team of researchers led by Dr. Michael Tobler, an evolutionary ecologist at Oklahoma State University, and Dr. Gil Rosenthal, a biology professor at Texas A&M, has discovered that some of these fish have managed not only to develop a resistance to the plant's powerful toxin, but also to pass on their tolerant genes to their offspring, enabling them to survive in the face of otherwise certain death for their non-evolved brethren.

Their findings recently were published in the online journal "Biology Letters."

Tobler has been studying the small, cave-dwelling fish species known as the Atlantic molly or Poecilia mexicana and its uncanny ability to survive in the toxic sulfur environment of Cueva del Azufre since 2004. He earned his Ph.D. from the University of Zurich in 2008 and spent the next two years as a postdoctoral research associate at Texas A&M, studying under Rosenthal and Dr. Kirk Winemiller, a professor in wildlife and fisheries science, as part of a two-year, $79,000 Swiss National Science Foundation Postdoctoral Fellowship.

After learning about the Zoque people's sacred ritual and witnessing the event firsthand in 2007, Tob
'/>"/>

Contact: Chris Jarvis
cjarvis@science.tamu.edu
979-845-7246
Texas A&M University
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Satellites show how Earth moved during Italy quake
2. Novel genetic region identified for childhood asthma in Mexicans
3. Watching movies featuring characters who smoke negatively influences Mexican-American teens
4. CSHL-Mexican team coaxes sexually reproducing plant to brink of asexual reproduction
5. Phylogenetic analysis of Mexican cave scorpions suggests adaptation to caves is reversable
6. Mexican salamander helps uncover mysteries of stem cells and evolution
7. Researchers develop flow sensors based on hair structures of blind cavefish
8. Adapting to darkness: How behavioral and genetic changes helped cavefish survive extreme environment
9. Stantum Offering Demo, Evaluation & Development Board Based on Its Patented Resistive Multi-Touch Technology
10. Researchers develop new self-training gene prediction program for fungi
11. Childrens National researchers develop novel anti-tumor vaccine
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/28/2015)... , May 28, 2015 Industry ... of a new report titled "Markets for Self-Healing ... polymers, inorganic capsule and vascular systems, biomaterials, relevant ... grow to around $2.7 billion by 2020. ... n-tech,s extensive coverage of smart materials. Other recent n-tech ...
(Date:5/27/2015)... 2015   Codonics (codonics.com), a ... image documentation solutions and Omnicell  (omnicell.com), ... solutions, is pleased to announce their state ... Label System® (SLS), an award-winning FDA class ... Omnicell Anesthesia Workstation, helps prevent medication errors, ...
(Date:5/26/2015)... 2015 Research and Markets ... the "Saudi Arabia Biometric Systems Market Forecast ... ,     (Logo: http://photos.prnewswire.com/prnh/20130307/600769) , ,The biometric systems market ... projected to grow at over 22% CAGR through ... to the surging demand for better biometric technologies ...
Breaking Biology News(10 mins):The Market for Self-Healing Materials to Reach $2.7 Billion by 2020 Says New n-tech Research Study 2The Market for Self-Healing Materials to Reach $2.7 Billion by 2020 Says New n-tech Research Study 3Codonics and Omnicell Expand Partnership 2Codonics and Omnicell Expand Partnership 3Codonics and Omnicell Expand Partnership 4Saudi Arabia Biometric Systems Market Forecast and Opportunities, 2020 with Morpho Safran, ZK Technlogy, and Suprema Dominating 2
... microbes living on floating pieces of plastic marine debris ... pose to invertebrates, humans and other animals. New research ... unexplored world of the "Plastisphere" an ecological community ... first discovered last year. When scientists initially ...
... Hundreds of insect scientists and entomology students will be ... the Southeastern Branch of the Entomological Society of America ... the Embassy Suites Greenville Golf & Conference Center, March ... student poster and paper competitions, social events, an awards ...
... eggs, soup and rubber toys, the list of the ... such as self-organizing colloids, or optics that can transmit ... flexibility of a liquid. The unusual arrangement of ... biological occurrence of a potentially new state of matter ...
Cached Biology News:AGU: Uncovering the secret world of the Plastisphere 2Southern insect scientists meeting in Greenville, S.C. 2In the eye of a chicken, a new state of matter comes into view 2In the eye of a chicken, a new state of matter comes into view 3In the eye of a chicken, a new state of matter comes into view 4In the eye of a chicken, a new state of matter comes into view 5
(Date:5/29/2015)... May 29, 2015 Results from a ... laherparepvec and its ability to reduce the size of ... been published in the Journal of Clinical Oncology. ... stages IIIB, IIIC and IV melanoma, a potentially fatal ... study was to evaluate the safety and efficacy of ...
(Date:5/29/2015)... May 29, 2015 Seoul Semiconductor ... in LED technology, on May 28th announced that ... share by strengthening its high efficient and high ... , Since 2011 Seoul Semiconductor has developed efficient ... market and has supplied LEDs for headlamps to ...
(Date:5/29/2015)... May 29, 2015 Translation is frequently listed ... for a good reason--if used in a way that is ... offering of a business product or service offering. , ... have a positive effect on a company's bottom line: , ... anyone in the world can use, why not offer it ...
(Date:5/28/2015)... , May 28, 2015 ... has announced the addition of Jain PharmaBiotech,s ... Markets and Companies"  to their offering.  ... disease remains a challenge in management. With ... in the seven major markets of the ...
Breaking Biology Technology:Study Published in Journal of Clinical Oncology Reports Talimogene Laherparepvec Improvesdurable Responses in Patients with Advanced Melanoma 2Seoul Semiconductor Increases the Global Automotive LED Market Share with its High Efficient and Reliable LEDs for Automotive Lightings 2Three Ways Translation Can Help Businesses Grow 2Global Alzheimer Disease Report 2015-2024 - New Drugs, Markets and Companies 2Global Alzheimer Disease Report 2015-2024 - New Drugs, Markets and Companies 3
... . -- Criticare Systems, Inc. on Monday announced a 20.3 ... the first full quarter of production and shipment of its ... ,In reporting its year-end numbers, the company said fourth-quarter net ... higher than the $6,667,617 for the same period of fiscal ...
... Welcome to the event. Here extreme manufacturing meets extreme consumption. ... surplus raw materials. The remaining nations pray and hope that ... love. The trade imbalances are way out of synch; envy ... the two odd nations. , ,Somewhere out there is ...
... care technologies developed in the Midwest, results of a ... the middle tier for its reputation among health care ... their primary offices in the Midwest, and three-fourths of ... one Midwest health care deal; 65 percent said they ...
Cached Biology Technology:The world's largest factory 2The world's largest factory 3The world's largest factory 4Midwest health care technology luring greater investment focus 2Midwest health care technology luring greater investment focus 3
... The ProLink Express is the first fully ... delivery and transfer operations with complete data ... initial bacterial colony picking through final protein ... is capable of delivering a plate to ...
... for life science applications on the GENESIS ... instruments including the Te-MO multichannel pipettor. ... simple graphical configuration of the system and ... scripting language the most flexible and complex ...
Transfection Buffer A & B Set 5 ml each...
...
Biology Products: