Navigation Links
Discovery of a water snake that startles fish in a way that makes them flee into its jaws
Date:6/18/2009

s that initiates the escape, which biologists call the "C-start." Fish ears sense the sound pressure on each side of their body. When the ear on one side detects a disturbance, it sends a message to the fishes' muscles causing its body to bend into a C-shape facing in the opposite direction so it can begin swimming away from danger as quickly as possible.

Catania is the first scientist to study this particular predator-prey interaction with the aid of a high-speed video camera. When he began examining the movements of the snake and its prey in slow motion, he saw something peculiar. When the fish that the snake targets turn to flee, most of them turn toward the snake's head and many literally swim into its jaws! In 120 trials with four different snakes, in fact, he discovered that an amazing 78 percent of the fish turned toward the snake's head instead of turning away.

Next, the biologist noticed that the first part of its body that the snake moves is not its head. Instead, it flexes a point midway down its body. Using a sensitive hydrophone that he put in the aquarium, he confirmed that this body fake produces sound waves intense enough to trigger the fish's C-start response. Because these sound waves come from the side opposite the snake's head, this reflex action drives the fish to turn and swim directly toward the snake's mouth.

"Once the C-start begins, the fish can't turn back," Catania says. "The snake has found a way to use the fish's escape reflex to its advantage."

As he studied the snake's actions even closer, he made an even more remarkable discovery. When it strikes, the snake doesn't aim for the fish's initial position and then adjust its direction as the fish moves the way most predators do. Instead it heads directly for the location where it expects the fish's head to be.

"The best evidence for this is the cases when the snake misses," says Catania. "Not all the targeted fish react with a C-start and the
'/>"/>

Contact: David F. Salisbury
david.salisbury@vanderbilt.edu
615-343-6803
Vanderbilt University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. New discovery suggests mammoths survived in Britain until 14,000 years ago
2. Discovery of the cells water gate may lead to new cancer drugs
3. Aussie and Kiwi researchers make double MS genetic discovery
4. Discovery raises new doubts about dinosaur-bird links
5. NAU discovery could help feed millions
6. Voyages of discovery or necessity?
7. NASA Earth system science meeting celebrates 20 years of discovery
8. Cells split personality is a major discovery into neurological diseases
9. Stowers researchers develop whole genome sequencing approach for mutation discovery
10. Google Earth aids discovery of early African mammal fossils
11. Penn researchers demonstrate a new model for drug discovery with a fluorescent anesthetic
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Discovery of a water snake that startles fish in a way that makes them flee into its jaws
(Date:7/9/2014)... considered a healthy source of protein, that,s not why the ... be presented at Tops Club Inc.,s annual International Recognition Days ... are 20-something women who want dishes that are quick, easy ... "They basically seem to care less about any health benefits ... it to look good and because it,s quick to cook ...
(Date:7/9/2014)... , an associate professor of plant pathology and ... been awarded the 2014 Alexopoulos Prize by ... to advancing the science of mycology the study ... yeasts, lichens, plant pathogens, and medically important fungi. , ... outstanding early-career mycologist. Stajich received the award last month ...
(Date:7/9/2014)... 2014) Emerging fungal pathogens pose a greater ... causing population declines of amphibians, bats, corals, bees ... South Florida published in the prestigious journal ... or immunological resistance to a deadly chytrid fungus ... "Acquired resistance is important because it is the ...
Breaking Biology News(10 mins):UC Riverside plant pathologist receives national recognition 2USF study: Amphibians can acquire resistance to deadly fungus 2
... AWRE ), a leading supplier of broadband technology and biometrics ... 30, 2010.   Revenues for the third quarter of ... million in the same quarter last year. Net income for the ... These results compared to a net loss of $1.1 million, or ...
... BOSTON The discovery that a protein called Rictor plays ... AKT oncogene could provide scientists with a new molecular target ... September 2010 issue of the journal Molecular Cell , ... Medical Center (BIDMC). The oncogenic cousin, known as ...
... Nanomedicine Center for Nucleoprotein Machines has received an award ... its renewal by the National Institutes of Health (NIH). ... of a clinically viable gene correction technology for single-gene ... disease. Sickle cell disease is a genetic condition ...
Cached Biology News:Aware, Inc. Reports Third Quarter 2010 Financial Results 2Aware, Inc. Reports Third Quarter 2010 Financial Results 3Aware, Inc. Reports Third Quarter 2010 Financial Results 4Aware, Inc. Reports Third Quarter 2010 Financial Results 5Rictor protein offers scientists a new molecular target for cancer therapies 2NIH renews Nanomedicine Center focused on treating single-gene disorders for $16.1 million 2NIH renews Nanomedicine Center focused on treating single-gene disorders for $16.1 million 3NIH renews Nanomedicine Center focused on treating single-gene disorders for $16.1 million 4
(Date:1/15/2014)... AudioNotch is the internet's leading provider of ... of tinnitus. Patients listen to sound therapy that is ... of weeks to months, their tinnitus volume decreases. , AudioNotch ... Music and Notched White Noise. Now, AudioNotch is pleased to ...
(Date:1/14/2014)... (PRWEB) January 14, 2014 Date: Friday, April ... Location: Warrington Country Club, 1360 Almshouse Road, Warrington, Pa. ... nonprofit organization solely dedicated to finding a cure for hepatitis ... worldwide, will host its annual Crystal Ball on Friday, April ...
(Date:1/14/2014)... January 14, 2014 Histogen, Inc., a ... of cells grown under simulated embryonic conditions, today announced ... with Suneva Medical, Inc. for physician-dispensed aesthetic products containing ... , This agreement is an amendment to the existing ...
(Date:1/14/2014)... owners drew up their lists of New Year,s resolutions for 2014, ... my furry companion." Nowadays there are pet salons, dog and cat ... the little canine or feline darlings along wherever mommy or daddy ... toys at the pet store. But anyone who has ever lived ...
Breaking Biology Technology:Hepatitis B Foundation to Host Annual Crystal Ball Gala 2Histogen and Suneva Medical Expand License for Cell Conditioned Media-based Aesthetic Products Internationally 2Histogen and Suneva Medical Expand License for Cell Conditioned Media-based Aesthetic Products Internationally 3New Year's Resolution: Give Pets the Gift of Top-Notch Health Care 2
... -- Spectrum Equity Investors of Boston will become the ... national provider of technology to mortgage lenders. , , ... an $84 million recapitalization of Mortgagebot. , ,Following the ... join Mortgagebot's board of directors. Terms of the transaction ...
... -- Metavante Corp., the financial technology subsidiary of Marshall ... of Nashville, Tenn., The company will continue to operate ... subsidiary of Metavante , with existing management continuing ... the transaction were not disclosed. , ,LINK2GOV provides ...
... The WiCell Research Institute's announcement Monday that it has ... to create the nation's first National Stem Cell Bank ... and innovative approach to the new field of research. ... opposition to embryonic stem cell research, the path forward ...
Cached Biology Technology:Boston equity firm becomes majority owner of Cedarburg-based Mortgagebot 2Metavante acquiring LINK2Gov 2WiCell to host new national stem cell bank 2WiCell to host new national stem cell bank 3WiCell to host new national stem cell bank 4
... 14 3C protease from human rhinovirus (HRV ... Novagen brand line of restriction grade proteases. ... recombinant 6XHis-fusion protein, which recognizes the same ... The small, 22 KDa size of the ...
...
... a tradition of progressive centrifuge design and ... The Centra-CL3 and Centra-CL3R (refrigerated) general purpose ... Quality Control Over Sample Preparation , ... up to 99 protocols and has speed ...
PP2B-Abeta (C-20)...
Biology Products: