Navigation Links
UConn researchers discover that 'red tide' species is deadlier than first thought
Date:7/23/2012

A University of Connecticut researcher and his team have discovered that a species of tiny aquatic organism prominent in harmful algal blooms sometimes called "red tide" is even deadlier than first thought, with potential consequences for entire marine food chains.

Professor Hans Dam and his research group in the school's Department of Marine Sciences have discovered that the plankton species Alexandrium tamarense contains not one but two different types of toxins, one that's deadly to large organisms and one that's deadly to small predators.

"If it's killing multicellular animals with one toxin and small protists with another, it could be the killer of the ocean world," he says.

Dam speculates that this ability to harm both large and small oceanic predators could lead to disruptions in the marine food web during large Alexandrium blooms, like the red tide that occurred along the Northeast coast in 2005, severely affecting the Cape Cod area.

"These small predators that are being affected by the reactive oxygen species are the things that typically eat large amounts of the algae and keep them from growing like crazy," says Dam. "This brings up a whole new line of inquiry for us: What will actually control these algae in the future?"

In small numbers, Alexandrium are virtually harmless to humans, says Dam. But when they're eaten by other clams, mussels or other microorganisms which are then eaten by small crustaceans, which are in turn eaten by larger crustaceans or fish the toxins can build up in large amounts. So in some parts of the world, eating contaminated shellfish, such as lobsters, clams and fish, has led to illness or death.

However, says Dam, that toxin only affects animals that have central nervous systems.

"This toxin blocks sodium channels in anything that has a well-developed nervous system," he says. "But most of the organisms in the ocean are not those kinds
'/>"/>

Contact: Tom Breen
tom.breen@uconn.edu
860-486-0890
University of Connecticut
Source:Eurekalert

Page: 1 2

Related biology news :

1. Study by UC Santa Barbara researchers suggests that bacteria communicate by touch
2. UC Santa Barbara researchers discover genetic link between visual pathways of hydras and humans
3. Researchers attempt to solve problems of antibiotic resistance and bee deaths in one
4. UNH researchers find African farmers need better climate change data to improve farming practices
5. Ottawa researchers to lead world-first clinical trial of stem cell therapy for septic shock
6. Researchers uncover molecular pathway through which common yeast becomes fungal pathogen
7. Researchers print live cells with a standard inkjet printer
8. Columbia Engineering and Penn researchers increase speed of single-molecule measurements
9. Researchers reveal how a single gene mutation leads to uncontrolled obesity
10. Researchers discover novel therapy for Crohns disease
11. New paper by Notre Dame researchers describes method for cleaning up nuclear waste
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/15/2014)... need for vitamin E and how much is enough, ... of this essential micronutrient are especially critical for the ... may become pregnant. , A lifelong proper intake of ... complicated by the fact that this nutrient is one ... It has been estimated that only a tiny fraction ...
(Date:9/12/2014)... , September 12, 2014 ... http://www.researchandmarkets.com/research/trs4c7/global ) has announced the addition of ... 2014" report to their offering. ,     ... Report 2014 is a professional and in-depth ... global fingerprint lock industry. , ,The report ...
(Date:9/12/2014)... of New York biologist Mike Hickerson, a team of international ... so many species of birds ended up in the Neotropics, ... the southernmost tip of South America. It is home to ... has beenhow did this extraordinary bird diversity originate?" said Dr. ... published in the journal Nature this week and ...
Breaking Biology News(10 mins):Vitamin E intake critical during 'the first 1,000 days' 2Vitamin E intake critical during 'the first 1,000 days' 3Global Fingerprint Lock Industry Report 2014 2
... of Biologists is pleased to announce BIOLOGY OPEN (BiO), ... research across all aspects of the biological sciences including ... journal aims to provide rapid publication for peer reviewed, ... fields. BIOLOGY OPEN will address some big issues ...
... a big effect on their life. Some people are ... which can be detrimental to their health and wellbeing. ... , A new study led by Dr Kathryn ... York has added important experimental evidence showing that animal ...
... fish, one from a Caribbean island and one from the Yucatan ... known in any organism, according to a new UC Davis study. ... Venezuela -- and they are all pretty much the same, said ... with Peter Wainwright, a professor of evolution and ecology at UC ...
Cached Biology News:Announcing BIOLOGY OPEN from the Company of Biologists 2Animals have personalities, too 2'Explosive' evolution in pupfish 2
(Date:9/15/2014)... interdisciplinary team of researchers led by Northeastern University ... precise inter-nanotube junctions and a variety of nanocarbon ... facile and easily scalable, which will allow the ... networks for use in applications ranging from electronic ... from cars to sports equipment. , Their findings ...
(Date:9/15/2014)... , Sept. 15, 2014  iVinci Health LLC, the ... Patient Revenue Management system, branded as VisitPay®, has successfully ... announced the launch of a new extension to VisitPay® ... an easy and convenient way for patients to manage ... owed by them and their families. The ...
(Date:9/15/2014)... CA (PRWEB) September 15, 2014 ... term implantable silicones for the medical device and ... silicone gel for the implantable medical device market. ... unique crosslink technology delivering a silicone gel with ... The Dual Matrix technology consists of two crosslinked ...
(Date:9/15/2014)... septiembre de 2014 La segunda anual International ... 12 al 18 de octubre. Como iniciativa conjunta de la ... compañías miembro s, la IPAW se ha diseñado para: ... a la colección de fuentes de plasma , Reconocimiento ... y mejorar las vidas , Aumento del conocimiento sobre ...
Breaking Biology Technology:Northeastern University Researchers Develop Novel Method for Working with Nanotubes 2iVinci Health Raises $5M to Fuel National Expansion, Announces Launch of Personal Finance Portal for Healthcare 2iVinci Health Raises $5M to Fuel National Expansion, Announces Launch of Personal Finance Portal for Healthcare 3Applied Silicone Launches Silicone Gel System with Dual Matrix Technology 2La International Plasma Awareness Week será una celebración para los donantes 2La International Plasma Awareness Week será una celebración para los donantes 3
... 2008 at 9:00 a.m. Eastern ... ... ALSE ) today reports operational and,financial results for the quarter ended ... http://www.newscom.com/cgi-bin/prnh/20080813/NEW056LOGO ), "We are encouraged by the progress we ...
... Named Contract Manufacturer of Choice, Based on Its ... Based on its recent,analysis of the pharmaceutical ... BioPharma Solutions (BPS) with the 2008 North,American Frost ... Award at,the 2008 Excellence in Healthcare Innovation Awards ...
... Novavax uses strategies to create vaccines for avian flu ... genetically-engineered virus-like particles (VLPs), ROCKVILLE, Md., ... today that its strategy for treating avian flu,through genetically-engineered ... at Cleveland Clinic 6th Annual Medical Innovation,Summit., Novavax, ...
Cached Biology Technology:Alseres Pharmaceuticals, Inc. Reports Third Quarter 2008 Operational and Financial Results 2Alseres Pharmaceuticals, Inc. Reports Third Quarter 2008 Operational and Financial Results 3Alseres Pharmaceuticals, Inc. Reports Third Quarter 2008 Operational and Financial Results 4Alseres Pharmaceuticals, Inc. Reports Third Quarter 2008 Operational and Financial Results 5Frost & Sullivan Awards Baxter's BioPharma Solutions Business the 2008 North American Customer Service Leadership of the Year Award 2Frost & Sullivan Awards Baxter's BioPharma Solutions Business the 2008 North American Customer Service Leadership of the Year Award 3Cleveland Clinic Recognizes New Strategies for Creating Vaccines for Avian Flu as a Top Ten Medical Innovation for 2009 2Cleveland Clinic Recognizes New Strategies for Creating Vaccines for Avian Flu as a Top Ten Medical Innovation for 2009 3Cleveland Clinic Recognizes New Strategies for Creating Vaccines for Avian Flu as a Top Ten Medical Innovation for 2009 4
... Single Cell Whole Genome Amplification Kit ... random fragmentation of genomic DNA and ... to PCR-amplifiable library molecules flanked by ... by PCR amplification of the library ...
Mouse monoclonal antibody to QARS - glutaminyl-tRNA synthetase...
Rabbit Anti-Mouse Ym1 Polyclonal Antibody,...
From formula-fed bovine calves Sterile, Cell culture tested...
Biology Products: