HOME >> BIOLOGY >> NEWS
Thin tough skin, slow-growing gills protect larval Antarctic fish

Very thin but hardy, unblemished skin and slow developing gills appear to be keys to survival for newly hatched Antarctic notothenioids, a group of fish whose adults thrive in icy waters because of antifreeze proteins (AFPs) in their blood.

Such adaptations are important, researchers at the University of Illinois at Urbana-Champaign say, because the larval fish of at least two species of notothenioids that inhabit the Ross Sea at McMurdo Sound and Terra Nova Bay surprisingly lack sufficient antifreeze to protect them through their first three months of life.

The unexpected discovery, reported online by the Journal of Experimental Biology ahead of regular publication, counters the assumption that these vital proteins must be present from the time of hatching -- a view held by scientists since fish AFPs were found in the 1960s.

Internal fluids such as blood in many notothenioids are about half as salty as seawater. While seawater reaches its freezing point at -1.91 degrees Celsius, fish fluids will freeze at about -1 degree Celsius. The water where these species dwell rarely rises above the freezing point and is regularly filled with ice crystals.

"The way that we've understood how adult polar fishes survive has been based on their use of these antifreeze proteins to lower the freezing point of their internal fluids," said lead author Paul A. Cziko, a research specialist in the department of animal biology. "We finally got a chance to look at the larval fish, and it seems that they don't always have to have antifreeze proteins to survive."

Cziko, who earned bachelor's degrees in honors biology and biochemistry in 2004 from Illinois, studied in Antarctica as an undergraduate with animal biology professors Chi-Hing (Christina) Cheng and Arthur L. DeVries, who discovered AFPs in notothenioids.

The research team, which also included Clive W. Evans of the University of Auckland in New Zealand, studied three notothenioid spe
'"/>

Contact: Jim Barlow, Life Sciences Editor
jebarlow@uiuc.edu
217-333-5802
University of Illinois at Urbana-Champaign
13-Feb-2006


Page: 1 2 3

Related biology news :

1. When the going gets tough, slime molds start synthesizing
2. Tyrannosaur survivorship -- tough times for teens
3. USC researchers find drug is tough tumor fighter
4. Siberian tigers hang tough
5. Now, self-healing materials can mimic human skin, healing again and again
6. Oral ZYVOX shows cost savings for outpatient treatment of skin, other infections vs. vancomycin
7. Human gland probably evolved from gills
8. Multinational research: protecting ecology means understanding people, too
9. No evidence that widely prescribed statins protect against prostate cancer
10. Rain forest protection works in Peru
11. New study suggests Concord grape juice may provide protection against breast cancer

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Thin tough skin slow growing gills protect larval Antarctic fish

(Date:7/20/2015)... -- Acuity Market Intelligence,s latest research "The Global Biometrics ... Privacy" forecasts that between 2014 and 2020 nearly ... to smart mobile devices by 2.2 billion mobile ... to generate more than $67.9 billion in total ...    "Biometrics is at the center ...
(Date:7/9/2015)... July 9, 2015  Unchained Labs just can,t ... acquisition of Avid Nano. Avid Nano designs, develops ... systems.    Also today, Unchained Labs ... easiest to use protein sizing system. The pUNk ... protein,s hydrodynamic size, size distribution, aggregation population and ...
(Date:7/8/2015)... The consumer products industry for innovative ... products such as wearables, smart wallets & other smart technology ... devices continues to rapidly grow.  Biometrics & Wearable Device Companies ... Google Inc. (NASDAQ: GOOG ), Apple Inc. (NASDAQ: ... (NASDAQ: GPRO ) and Baidu Inc. (NASDAQ: BIDU ...
Breaking Biology News(10 mins):Biometrics on Smart Mobile Devices to Redefine Digital Identity with 12.9 Billion Biometric App Downloads between 2014 and 2020 2Unchained Labs just can't get enough, acquires Avid Nano, rocks out the new pUNk! 2Consumers Flock to This Summer's Must Have Tech Gadgets as Latest Digital Wallets, Smart Technology & Wearable Products Continue to Grow in Popularity & Functionality 2Consumers Flock to This Summer's Must Have Tech Gadgets as Latest Digital Wallets, Smart Technology & Wearable Products Continue to Grow in Popularity & Functionality 3Consumers Flock to This Summer's Must Have Tech Gadgets as Latest Digital Wallets, Smart Technology & Wearable Products Continue to Grow in Popularity & Functionality 4Consumers Flock to This Summer's Must Have Tech Gadgets as Latest Digital Wallets, Smart Technology & Wearable Products Continue to Grow in Popularity & Functionality 5Consumers Flock to This Summer's Must Have Tech Gadgets as Latest Digital Wallets, Smart Technology & Wearable Products Continue to Grow in Popularity & Functionality 6
(Date:7/24/2015)... , July 24, 2015  Champions Oncology (OTC-BB: ... technology solutions and services to personalize the development and ... its financial and operational results for the fourth quarter ... Tuesday, July 28, 2015, before market open. ... the results that day at 9:00 a.m. EDT (6:00 ...
(Date:7/24/2015)... 24, 2015 , Adds integrated ... Expands product offering for chronic kidney disease and oncology ... diabetes-related complications and dermatology , Increases group revenue ... or ,the Company"), a leading China ... marketing biopharmaceutical products, today announced that it has acquired ...
(Date:7/23/2015)... ... July 23, 2015 , ... Science and technology continue to improve all ... and devices – according to Susan Chang, MD, director of the Division of Neuro-oncology ... and new technology are impacting the development of new treatments and advancing strategies to ...
(Date:7/23/2015)... (PRWEB) , ... July 23, 2015 , ... The Pittcon ... the Harry S. Mosher Professor of Chemistry and Professor, by courtesy, of Applied Physics ... Optical Single-Molecule Detection in Solids Led to Super-Resolution Nanoscopy in Cells and Beyond” , ...
Breaking Biology Technology:Champions Oncology to Announce Fourth Quarter Financial Results on Tuesday, July 28 23SBio Acquires Zhejiang Wansheng Pharmaceutical 23SBio Acquires Zhejiang Wansheng Pharmaceutical 33SBio Acquires Zhejiang Wansheng Pharmaceutical 4Experts Present How Science and New Technology are Driving New Brain Tumor Treatments and Improving Quality of Life 2Experts Present How Science and New Technology are Driving New Brain Tumor Treatments and Improving Quality of Life 3The 2014 Nobel Prize in Chemistry Recipient W. E. Moerner, to Deliver Wallace H. Coulter Lecture at Pittcon 2016 2The 2014 Nobel Prize in Chemistry Recipient W. E. Moerner, to Deliver Wallace H. Coulter Lecture at Pittcon 2016 3
Cached News: