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:6/23/2015)... , June 23, 2015   Valencell, ... the results of a recent study that illustrates ... the wrist during activity. In a study conducted ... compared along with the Apple Watch against a ... heart rate during activity. The study demonstrated that ...
(Date:6/17/2015)... , Deutschland und GERMANTOWN, Maryland , ... ®   Produktlinie mit DNA-Tests verbessert ... N.V. (NASDAQ: QGEN ; Frankfurt Prime Standard: QIA) ... neue STR-Testkits der Produktlinie Investigator ® ... den Markt eingeführt. Die neuen Kits zur Erstellung genetischer ...
(Date:6/16/2015)... QUEBEC CITY , June 16, 2015 /CNW ... announce their partnership centralized around the incorporation of ... mobile point-of-care diagnostic laboratory, the Mo-POD™. This unprecedented ... the BIO International Conference at the ... from June 15 th to ...
Breaking Biology News(10 mins):Valencell Delivers Breakthrough Heart Rate Accuracy on the Wrist 2Valencell Delivers Breakthrough Heart Rate Accuracy on the Wrist 3QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 2QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 3QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 4QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 5QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 6handyem and FlowMetric Diagnostics announce their partnership in the development of Flow Cytometry- Based Solutions in diagnostic capabilities 2handyem and FlowMetric Diagnostics announce their partnership in the development of Flow Cytometry- Based Solutions in diagnostic capabilities 3
... 2011 (Rome, Italy) -- Researchers speaking in the second ... Pathogenesis, Treatment and Prevention (IAS 2011) have today provided ... and alerted delegates to the challenges that developing countries ... antiretroviral therapy (ART) coverage. The presentations reflect the ...
... Small-scale fisheries could pose a more serious threat to ... University of Exeter, published today (19 July) in the ... shows that tens of thousands of turtles from across ... small-scale fisheries. Focusing on fisheries in Peru, the ...
... use various appendages to move across surfaces prior to ... jerky form of movement known as "twitching" motility, which ... called type IV pili, or TFP. ... a professor of bioengineering and of chemistry and biochemistry ...
Cached Biology News:Plenary speakers address challenges in the delivery of sustained antiretroviral therapy in developing countries, call for social scientists to take their place at the HIV/AIDS policy-making table, and stress the need for a long-term response to AIDS 2Plenary speakers address challenges in the delivery of sustained antiretroviral therapy in developing countries, call for social scientists to take their place at the HIV/AIDS policy-making table, and stress the need for a long-term response to AIDS 3Study shows small-scale fisheries' impact on marine life 2UCLA study shows bacteria use Batman-like grappling hooks to 'slingshot' on surfaces 2
(Date:6/29/2015)... , June 29, 2015  MiMedx Group, Inc. ... utilizing human amniotic tissue and patent-protected processes to develop ... Care, Surgical, Orthopedic, Spine, Sports Medicine, Ophthalmic and Dental ... Parker H. "Pete" Petit, has been awarded the Lifetime ... 2015 Southeast Program. The Entrepreneur Of ...
(Date:6/29/2015)... Louis, MO (PRWEB) , ... June 29, 2015 , ... ... 15 – July 16 and for the fourth year in a row, will bring ... what changes are taking place at the intersection of data and technology. The event ...
(Date:6/29/2015)... , June 29, 2015 ... and medical information products and services, today announced the ... According to the 2014 Journal Citation Reports® (JCR) published ... Impact Factors increase from 2013 to 2014, ahead of ... occupied the top rank in 62 subject categories, up ...
(Date:6/26/2015)... - iCo Therapeutics ("iCo" or "the Company") (TSX-V: ICO) ... in the management information circular dated June 1, 2015 were ... of Shareholders, held earlier today, June 26 2015. ... nominees proposed by management were elected as Directors ... next Annual Meeting of Shareholders or until their ...
Breaking Biology Technology:EY Entrepreneur Of The Year Program Recognizes Pete Petit, The Chairman & CEO of MiMedx 2StampedeCon Announces 2015 Agenda 2StampedeCon Announces 2015 Agenda 3Elsevier Announces 2014 Citation Impact Highlights 2Elsevier Announces 2014 Citation Impact Highlights 3iCo Therapeutics Announces Voting & Election Results from Annual Meeting of Shareholders 2iCo Therapeutics Announces Voting & Election Results from Annual Meeting of Shareholders 3
... Small Companies In America, UNION CITY, Calif., Oct. ... products company manufacturing point-of-care,blood chemistry analysis systems, announced today ... named "Entrepreneur of,the Year" by Forbes Magazine in its ... ranked eleventh of the "200 Best Small Companies in,America." ...
... Held by GlaxoSmithKline Since June 2006, PHILADELPHIA ... The Thomson Corporation (NYSE: TOC ; TSX: ... worldwide research and,business communities, today announced the availability ... on drugs and therapies. "Who is,Making the Biggest ...
... AURORA, ON, Oct. 15 /PRNewswire-FirstCall/ - Helix BioPharma Corp.,(TSX: ... F. McElroy,has resigned as Chairman and a director of ... had a long involvement with the Company since its,amalgamation ... "On behalf of the Company, I thank him for ...
Cached Biology Technology:Abaxis CEO Clint Severson Named 'Entrepreneur of the Year' by Forbes Magazine 2Thomson Scientific Publishes 'Who Is Making The Biggest Splash?' - A Quarterly Review of Scientific Literature on Drugs and Therapies From April - June 2007 2Thomson Scientific Publishes 'Who Is Making The Biggest Splash?' - A Quarterly Review of Scientific Literature on Drugs and Therapies From April - June 2007 3Helix BioPharma Chairman resigns 2
... The Neural Stem Cell Expansion Kit - Neurosphere ... neural stem cell expansion as neurospheres in ... specially formulated N-2 Plus Media Supplement, which has ... K.K. et al . (1996) Genes & ...
DNase I (Deoxyribonuclease I) digests single- and double-stranded DNA to oligodeoxyribonucleotides. Ribonuclease activity has been reduced to non-detectable levels....
... E. coli strain containing an overproducing clone ... Reverse Transcriptase catalyzes the polymerization of DNA ... Full-length copies of large mRNAs, >10 kb, ... a much lower RNase H activity than ...
... RQ1 RNase-Free DNase is a preparation ... or double-stranded DNA to produce 3-hydroxyl ... use in applications where maintaining the ... DNase is qualified for use with ...
Biology Products: