Navigation Links
Discovery of algae's toxic hunting habits could help curb fish kills
Date:1/21/2010

s Hopkins and a co-author of the paper. "Some people thought they were just using the toxins to scare away other predators and protect themselves. But with this new research, we've provided clear evidence that this species of K. veneficum is using the toxin to stun and capture its prey."

Historically, scientists have found it difficult to study the behavior of these tiny animals because the single-cell creatures can quickly swim out of a microscope's shallow field of focus. But in recent years this problem has been solved through the use of digital holographic microscopy, which can capture three-dimensional images of the troublesome microbes. The technique was pioneered by Katz.

In a study published in 2007, Katz, Place and Jian Sheng, who was Katz's doctoral student, were part of a team that reported the use of digital holographic microscopy to view the swimming behavior of K. veneficum and Pfiesteria piscicida. At the time, it appeared that K. veneficum slowed down into a "stealth mode" in order to ambush its prey while P. piscicida sped up to capture prey.

For the new paper, in which Sheng is lead author, the researchers used the same technique to more closely study the relationship between K. veneficum and its prey, a common, single-celled algal cell called a cryptophyte. They found that K. veneficum microbes release toxins to stun and immobilize their prey prior to ingestion, probably to increase the success rate of their hunt and to promote their growth.

This significantly shifts the understanding about what permits harmful algal blooms to form and grow, the researchers said. Instead of being a self-defense mechanism, the microbes' production of poison appears to be more closely related to growth through the ingestion of a "pre-packaged" food source, the cryptophyte cell, they concluded.

"In the paper, we have answered why these complicated [toxic] molecules are made
'/>"/>

Contact: Phil Sneiderman
prs@jhu.edu
443-287-9960
Johns Hopkins University
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Discovery may help defang viruses
2. Stomach stem cell discovery could bring cancer insights
3. Symposium marks 30th anniversary of discovery of third domain of life
4. Emory paleontologist reports discovery of carnivorous dinosaur tracks in Australia
5. Natural product discovery by Cleveland medical researchers blocks tissue destruction
6. Researchers discovery may lead to hypertension treatment
7. Yale discovery suggests protein may play a role in severe asthma
8. Galapagos and Cystic Fibrosis Foundation Therapeutics announce drug discovery collaboration
9. Profound immune system discovery opens door to halting destruction of lupus
10. Scripps Research discovery leads to broad potential applications in CovX-Pfizer deal
11. New discovery could reduce the health risk of high-fat foods
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/10/2014)... 2014  Unisys Corporation,s (NYSE: UIS ) subsidiary ... today announced that it has been selected by the Dutch ... new Basic Provision Biometrics solution for penitentiaries across ... contract with a solution based on its open standards-based ... the contract is up to seven years, with the new ...
(Date:7/10/2014)... 2014 According to the new ... And Area), Material (Optical Prism, Pizeoelectric, Capacitive, and Adhesives), ... Banking & Finance), and Geography - Global Trends & ... global Fingerprint Sensors Market is projected to cross $14.35 ... 16.8% from 2014 to 2020. Browse more ...
(Date:7/10/2014)... According to a new market ... Systems Market Global Forecast, Market Share, Size, Growth and ... Control systems market was valued at USD 15,406.1 million ... CAGR of 12.6% from 2014 to 2019, to reach ... Browse the full Electronic Access Control Systems ...
Breaking Biology News(10 mins):Unisys Delivers New Basic Provision Biometrics Solution to Dutch Custodial Institutions Service 2Unisys Delivers New Basic Provision Biometrics Solution to Dutch Custodial Institutions Service 3Fingerprint Sensors Market worth $14.35 Billion by 2020 2Fingerprint Sensors Market worth $14.35 Billion by 2020 3Electronic Access Control Systems Market is Expected to Reach USD 31.2 Billion Globally in 2019: Transparency Market Research 2Electronic Access Control Systems Market is Expected to Reach USD 31.2 Billion Globally in 2019: Transparency Market Research 3Electronic Access Control Systems Market is Expected to Reach USD 31.2 Billion Globally in 2019: Transparency Market Research 4Electronic Access Control Systems Market is Expected to Reach USD 31.2 Billion Globally in 2019: Transparency Market Research 5
... at The University of Nottingham say adverse side-effects caused by ... be controlled by what we eat. The research, carried ... UK and Malaysia, indicates that natural variation in our levels ... how we respond to quinine treatment. It appears that the ...
... $55.5 million to university consortia to establish three ... interdisciplinary nanosystems research and education in partnership with ... Nanosystems ERCs, or NERCS, will advance knowledge and ... as the human health and environmental implications of ...
... and it,ll remember you for years. Crows and humans share ... as well as positive, feelings. The way the brain activates ... to share, according to new research being published this week. ... not unlike those that work together in mammals, including humans," ...
Cached Biology News:Diet could combat adverse side-effects of quinine 2Diet could combat adverse side-effects of quinine 3Engineering research centers awarded $55.5 million to innovate in nanoscale science and engineering 2Engineering research centers awarded $55.5 million to innovate in nanoscale science and engineering 3Crows react to threats in human-like way 2Crows react to threats in human-like way 3
(Date:7/10/2014)... 10, 2014 /PRNewswire-iReach/ -- Tute Genomics, the ... announced an agreement with Lineagen, Inc., to ... NextStep Dx PLUS.  Lineagen, focused on ... disorders, currently offers FirstStep Dx PLUS, ... used by healthcare providers as a first-line ...
(Date:7/10/2014)... of Adelaide research may help in the fight against ... detect tiny quantities of explosives with the use of ... journal Sensors and Actuators B: Chemical , the ... detect explosives in concentrations as low as 6.3 ppm ... only a few minutes. , "Traditionally explosives detection has ...
(Date:7/10/2014)... fractional quantum Hall effect in bilayer graphene and shown ... by an electric field. , The fractional quantum ... thin sheets are exposed to large magnetic fields, is ... individual electrons behave as a single system. However, while ... many details of this collective behavior remain not well ...
(Date:7/10/2014)... at the University of Illinois at Urbana-Champaign provides ... interplay of spin and heat at the nanoscale, ... devices for data storage and information processing. ... spin-angular momentum. In a typical charge current, electrons, ... current," explained David Cahill, a professor of materials ...
Breaking Biology Technology:Tute Genomics Platform Selected to Provide Clinical Interpretation for Lineagen's NextStepDx PLUS Next-Generation Sequencing-Based Diagnostic Test 2Tute Genomics Platform Selected to Provide Clinical Interpretation for Lineagen's NextStepDx PLUS Next-Generation Sequencing-Based Diagnostic Test 3Tute Genomics Platform Selected to Provide Clinical Interpretation for Lineagen's NextStepDx PLUS Next-Generation Sequencing-Based Diagnostic Test 4Detecting trace amounts of explosives with light 2Columbia researchers observe tunable quantum behavior in bilayer graphene 2Columbia researchers observe tunable quantum behavior in bilayer graphene 3University of Illinois study advances limits for ultrafast nano-devices 2
... at getting a second-rate solution for something as critical as ... in almost every other product and service arena. , ,Speed ... services as the general metric for assessing whether or not ... Speed is good , ,To paraphrase Gordon Gekko's ...
... TomoTherapy executives have talked about their ... are bearing fruit. , ,The Madison-based medical technology ... Kirloskar Theratronics, Ltd . to distribute ... countries. KTPL, part of the Kirloskar Group, provides ...
... job is becoming more and more a rare option rather ... I'm still getting feedback about people giving two-weeks' notice and ... two-week notices no longer are part of the standard practice. ... for! , ,One reader said you should give a two-week ...
Cached Biology Technology:Damn the incumbents, and full speed ahead 2Damn the incumbents, and full speed ahead 3Damn the incumbents, and full speed ahead 4Two-week notices: People are still concerned 2Two-week notices: People are still concerned 3Two-week notices: People are still concerned 4Two-week notices: People are still concerned 5
quantitation of phosphatase activity, evaluation of hits and leads from HTS...
... ISO 9001:2000 Certified USDA Research Registered ... SOP's Training AALAS Certified Technicians ... Procedures GLP Documentation Upon Request Focus ... point for all your custom immunology service ...
Request Info...
Request Info...
Biology Products: