Navigation Links
Are fish near extinction?
Date:6/25/2014

anous sac attached to an embryo that provides early nourishment in the form of yolk), these premature organisms can survive for a period of two or three days, but once the larvae, with poorly developed fins and gills, open their mouths, they start dying in droves.

"We thought, something is going on during this period, in which the proportional number of larvae dying is greatest," said Dr. Holzman. "Our goal was to pinpoint the mechanism causing them to die. We saw that even under the best controlled conditions, 70% of fish larvae were dying within the two weeks known as the 'critical period,' when the larvae detach from the yolk sac and open their mouths to feed," said Dr. Holzman. "What was going on? We turned to physics as a source of the problem."

Eating soup with a fork

The physical structure of the larvae and their flawed interaction with the physical environment provided the answer Dr. Holzman was looking for. Over the course of two years, he and doctoral student Victor China observed fish larvae at three significant points in their development (at the beginning, middle, and end of that "critical period" eight, 13; and 23 days old). They found that the "stickiness" of the water the viscosity of the surrounding ocean water was hampering the larvae's attempts to feed.

"All that determines the larvae's feeding ability is viscosity not age, not development. Only their interaction with the surrounding water," said Dr. Holzman. "Because the water molecules around you have weak electrical bonds, only a thin layer sticks to your skin a mere millimeter thick. If you're a large organism, you hardly feel it. But if you're a three-millimeter-sized larva, dragging a millimeter of water across your body will prevent you from propelling forward to feed. So really, its all about larval size, and its ability to grow fast and escape the size where it feels the water as viscous fluid."

The researchers found that in less v
'/>"/>

Contact: George Hunka
ghunka@aftau.org
212-742-9070
American Friends of Tel Aviv University
Source:Eurekalert

Page: 1 2 3

Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/1/2015)... -- NXT-ID, Inc. (NASDAQ: NXTD ) ("NXT-ID" or the ... mobile commerce market, announces the second shipment of a ... early access pre-order customers. Feedback from ... including Walmart, Target, AT&T, Dunkin, Donuts, Stop & Shop ... all outlets and very easy to use. Several users ...
(Date:3/31/2015)... March 31, 2015  Elephant Talk Communications Corp. (NYSE ... provider of Software Defined Network Architecture (ET Software DNA® ... revenue of approximately $20.4 million for the year ended ... million for the year ended December 31, 2013. ... Company had completed its multi-year transition away from its ...
(Date:3/30/2015)... and Markets ( http://www.researchandmarkets.com/research/lc9bnl/global_gesture ) has announced ... in Automotive Sector 2014-2018" report to their offering. ... market in Automotive Sector to grow at a CAGR ... recognition is the ability of a device to identify ... recognition technology can be 2D-based or 3D-based. It uses ...
Breaking Biology News(10 mins):NXT-ID Reports Second Shipment of Wocket Smart Wallets Underway to Early Access Pre-order Customers and Provides User Feedback 2NXT-ID Reports Second Shipment of Wocket Smart Wallets Underway to Early Access Pre-order Customers and Provides User Feedback 3NXT-ID Reports Second Shipment of Wocket Smart Wallets Underway to Early Access Pre-order Customers and Provides User Feedback 4Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 2Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 3Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 4Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 5Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 6Global Gesture Recognition Market in Automotive Sector Report 2015 - Growing Number of Partnerships 2
... as a folk remedy, but now scientists from Britain and ... as a treatment for herpes. The team,s findings, published in ... between two teams to established scientific evidence for traditional medicines. ... across mainland Europe and Asia. From the Middle Ages onwards ...
... OAK RIDGE, Tenn, Feb. 22, 2011 -- A theoretical ... National Laboratory is bringing supercomputer simulations and experimental results ... ORNL,s Jeremy Smith collaborated on devising a method -- ... experiments and computer simulations to strengthen analyses of molecules ...
... Conservation Society (WCS) working in conjunction with the Turtle ... from around the world some of which currently ... hunting for both food and the pet trade along ... in the next decade unless drastic conservation measures are ...
Cached Biology News:Old folk remedy revived: How tansy may be a treatment for herpes 2'Fingerprints' match molecular simulations with reality 2Shellshock: New report lists 25 most endangered turtle species 2
(Date:4/27/2015)... April 27, 2015  Together with its customers, Elekta ... Forum in Barcelona . The funds ... with the mission to improve cancer care, specifically radiation ... believes that no patient should be denied potentially life-saving ... it cooperates with hospitals and clinics around the world ...
(Date:4/24/2015)... California (PRWEB) April 24, 2015 ... key milestones in its allogeneic stem-cell product development ... to properly reflect the corporate strategic direction. , ... allogeneic (donor) adipose stem cell development program has ... of our cGMP manufacturing facility and hiring of ...
(Date:4/24/2015)... N.J. , April 24, 2015  Navitas Life Sciences ... as Head of Clinical and Regulatory Services. Shalabh is ... been a co-founder and CEO of Kinapse, as well as ... Logo - http://photos.prnewswire.com/prnh/20150423/201261LOGO ... Jim Tizzard commented "I am delighted to welcome Shalabh ...
(Date:4/23/2015)... 23, 2015 The Thomas Brain ... conduct a groundbreaking pilot study to see if ... in as little as three to six months. ... and nutritional medicine—will aggressively target and simultaneously treat ... our aging brain. These include oxidative stress, neuroinflammation, ...
Breaking Biology Technology:Elekta helps raise $33,000 to bring radiation treatment to developing countries 2Elekta helps raise $33,000 to bring radiation treatment to developing countries 3Vet-Stem, Inc. Meets New Milestones and Changes Name to VetStem Biopharma 2Shalabh Kumar Joins Navitas Life Sciences to Lead their Clinical and Regulatory Services Teams 2New Study Looks to Reverse Alzheimer’s Disease 2New Study Looks to Reverse Alzheimer’s Disease 3
... YORK, Aug. 10 ExL Pharma is pleased ... many of the leading issues that are,impacting the ... offer educational and networking opportunities for Clinical,Marketing, R&D, ... biotech and medical technology companies. Listed below ...
... Genmab,s Partner Roche has Filed an IND With the US FDA for ... ... A/S (OMX: GEN),announced today that its partner Roche has filed an Investigational ... antibody developed under the companies, collaboration. Genmab will,receive a milestone payment from ...
... Reliant Pharmaceuticals,Inc. today announced that it has filed ... Exchange Commission for an initial public offering,of its common ... issued common stock and that certain stockholders may sell,a ... Goldman, Sachs & Co. and Merrill Lynch & ...
Cached Biology Technology:Pfizer, Genentech, Amgen, Bayer, Wyeth, Abbott, Merck and Additional Leading Pharmaceutical Companies Participating During ExL Pharma's Fall Line Up! 2Roche Files IND for Second Genmab Antibody 2Reliant Pharmaceuticals Announces the Filing of Registration Statement on Form S-1 For an Initial Public Offering 2
COMING SOON: Anti-Mouse C5/C5b, Clone BB5.1. Monoclonal Antibody...
... Goat anti-Human Alpha 1 Acid ... azide Goats were immunized ... glycoprotein in Freund's adjuvant. ... absorbed to ensure specificity. ...
Anti-Mouse Valpha 2 TCR, Purified (Clone B20.1) (rat IgG2a)...
Request Info...
Biology Products: