Powerboat-World.com
 
 
News Home Video Gallery Newsletters Features FishingBoating Photo Gallery Sail-World Australia Australian Cruising
Sail-World Australia Australian Cruising MarineBusiness-World

 

Sail-World.com : Bacterial pathogens and rising temperatures threaten Coral health

Bacterial pathogens and rising temperatures threaten Coral health

'A pale yellow or white band across the surface of the coral characterizes yellow band disease. In this image of Fungia corals from the Indo Pacific, the banded areas indicate where bacteria from the genus Vibrio have killed zooxanthellae, the coral’s source of energy. With depleted metabolic resources, the coral usually dies. (James Cervino, Pace University)'    Woods Hole Oceanographic Institution (WHOI) ©

Coral reefs around the world are in serious trouble from pollution, over-fishing, climate change and more. The last thing they need is an infection. But that’s exactly what yellow band disease (YBD) is—a bacterial infection that sickens coral colonies. Researchers at the Woods Hole Oceanographic Institution (WHOI) and colleagues have found that YBD seems to be getting worse with global warming and announced that they’ve identified the bacteria responsible for the disease.

Just as a doctor can diagnose a child with chicken pox by the small, round bumps on her skin, you can tell a coral with yellow band disease (YBD) by its own characteristic markings. This affliction etches a swath of pale-yellow or white lesions along the surface of an infected coral colony. The discolored band is a mark of death, indicating where the bacterial infection has killed the coral’s photosynthetic symbionts, called zooxanthellae. The coral host suffers from cellular damage and starves without its major energy source, and usually does not recover.

In a paper published in the November 2008 issue of the Journal of Applied Microbiology (JAM), lead author James Cervino, a guest investigator in the WHOI Marine Chemistry and Geochemistry department, and his colleagues report isolating the bacteria that cause YBD: a group of four new Vibrio species, which combine with existing Vibrio on the coral to attack the zooxanthellae. This is the first demonstration that the same bacterial culprits are to blame for the disease throughout the Caribbean as well as half way around the world in Indonesia.

The broad distribution of the core group of Vibrio also helps explain the expanding incidence of YBD throughout the world’s tropical oceans, Cervino says. The JAM study documents YBD infection in Indonesia, Thailand, and the Philippines. According to Cervino, 'In the U.S. Virgin Islands, Florida, the Caribbean, YBD is one of the most threatening coral diseases.'

The Vibrio bacteria that cause YBD are part of a family with a reputation for disease. 'What we have are coral pathogens that are genetically close to shellfish pathogens,' Cervino says. For example, one of the Vibrio bacteria found in corals also causes infections in prawns, shrimp, and crabs. The bacteria are also distantly related to Vibrio cholera, the pathogen that causes human cholera epidemics. There is no known danger to humans from YBD, however.

Cervino and colleagues grew Vibrio pathogens together with healthy coral. They found that YBD infection occurs at normal ocean temperatures, but that warmer temperatures made the disease even more virulent. Cervino explains, 'Contrary to what many experts have assumed, this disease occurs independently of warming temperatures.' However, when the temperatures go up and the corals are already infected, the infection becomes more lethal. 'Thermal stress and pathogenic stress are a double-whammy for the organism,' emphasizes Cervino. With the Vibrio core group occurring in tropical oceans all over the world and water temperatures on the rise, he says, the prognosis for corals and the spread of YBD is rather grim.

Cervino is a professor at Pace University in New York and a visiting scientist at Woods Hole Oceanographic Institution. Cervino works in co-author Konrad Hughen’s lab in the Department of Marine Chemistry and Geochemistry. Of their joint work Cervino says, 'You have biology and chemistry merging together in this lab at WHOI and it’s turning out to be an amazing collaboration.'

The effects of yellow band disease can be seen on the coral Montastraea (A and C) and Diploastraea (B and D), which are found in the Caribbean and the Florida Keys, and the Indo-Pacific, respectively. Researchers found that YBD seems to be getting worse with global warming. (James Cervino, Pace University) -  Woods Hole Oceanographic?nid=53277 Institution (WHOI) ©

The Woods Hole Oceanographic Institution is a private, independent organization in Falmouth, Mass., dedicated to marine research, engineering, and higher education. Established in 1930 on a recommendation from the National Academy of Sciences, its primary mission is to understand the oceans and their interaction with the Earth as a whole, and to communicate a basic understanding of the oceans’ role in the changing global environment.
http://www.whoi.edu




by Woods Hole Oceanographic Institution

  

Click on the FB Like link to post this story to your FB wall

http://www.powerboat-world.com/index.cfm?nid=53277

3:23 AM Tue 27 Jan 2009 GMT






Click here for printer friendly version
Click here to send us feedback or comments about this story.

Click for further information on
Environment and the ocean

Related News Stories:

27 Nov 2013  World Oceans Day appeals for funds
16 Nov 2013  Gigantic iceberg sails north from the Antarctic
09 Nov 2013  Sailing and swimming with manatees - Oceans Watch Essay
01 Nov 2013  OceansWatch: cruising sailors give something back in the South Pacific
23 Oct 2013  'The Ocean is Broken' - without fish, there can be no birds
13 Oct 2013  PlanetSolar reaches Paris after successful ocean study
02 Oct 2013  Monaco Yacht Show goes Green
07 Sep 2013  Great Pacific Garbage Patch - the real story
03 Sep 2013  World's largest solar yacht drops anchor after marine science quest
25 Aug 2013  Boat owners: cover vessels to deter seagulls
MORE STORIES ...

Power Boat News



Dangerous conditions forecast for NSW boaters by Roads and Maritime Services,










Abbot Point onshore disposal by Great Barrier Reef Marine Park Authority,










Great Barrier Reef plan released for comment by Queensland Minister for Environment,










Brisbane Boat Show begins *Feature by Jeni Bone,


































Mediterranean Grand Prix 2014 - Wins for Victory and Chaudron
Mediterranean Grand Prix, UIM-ABP Tour: Pons claims Runabout GP1 win
Mediterranean Grand Prix - Al Zaffain and Bin Hendi win race 1
Court judgement a stark reminder about towing safety
Australian Offshore Superboat 2014 - Superboats ready for Redcliffe
Southport Yacht Club’s annual Sail Past and Blessing of Fleet Ceremony
Gosport Grand Prix of the Sea finale to decide P1 champions
Camper & Nicholsons Yachts presents the Sagitta 42
GT15 and GT30 European Championships - Jelf takes to the podium twice
Marine Rescue crew saves cruiser in trouble in rough conditions
XCAT Series gets set to conquer another continent in 2015
Dangerous conditions for boaters on most of NSW coast
2014 Mandurah Boat Show - Third largest boat show in Australia
2014 Gold Coast International Marine Expo - Eye on the big picture
Mediterranean Grand Prix - Powerboat racing heavyweights head to Ibiza
Mediterranean Grand Prix - World Aquabike stars all set
Antarctic sea-level rising faster than global rate
Powerboat champions gear up for Honda RYA Youth RIB National final
Andrew Scott joins Superior as General Manager *Feature
2014 Gold Coast International Marine Expo - Fastest Jet Ski ever built
Best Birthday Party ever at Southport Yacht Club! *Feature   
‘Hall of Fame’ status for Empire Marina *Feature   
Girl power all set for Nottingham powerboat racing action   
Cowes to Torquay Race 2014 - Intense activity in preparation   
Fort Lauderdale International Boat Show - 13 things to See and do   
Australian Offshore Superboat Champ - 15 Superboats in Coffs Harbour   
European première for Belize 54 Daybridge at Cannes Yachting Festival   
‘Fish Friendly’ accreditation for Sanctuary Cove Marina   
Plethora of Powerboat racing action this weekend   
Vicsail Boat show Open Day at Rushcutters Bay   
Marine15 - prospectus available online now + VIDEO *Feature   
Southport Yacht Club achieves Clean Marina certification + VIDEO *Feature   
Port Kembla Volunteers bring in 75 metre monster from 5nm offshore   
Gold Coast Int'l Marine Expo - Make every moment one to remember   
Dangerous conditions for boaters from Queensland border to Sydney   
4x4 Outdoors Show and Fishing and Boating Expo - Busy opening day   
Summerland 40 LR named Boat of the Year   
More new boats brand Brisbane Boat Show as a spectacular showcase   
Xiamen Int'l Boat Show 2014 moving to a new home   
Yamaha inspires students to succeed   


For this week's complete news stories select    Last 7 Days
   Search All News
For last month's complete news stories select    Last 30 Days
   Archive News







Sail-World.com  


















Switch Default Region to:

Social Media

Asia

Australia

Canada

Europe

New Zealand

United Kingdom


http://www.sail-world.com/event_images/image/Twitter_logo_small.png   http://www.sail-world.com/event_images/image/RSS-Icon.png

United States

Cruising Northern

Cruising Southern

MarineBusiness World

PowerBoat World

FishingBoating World

 

Contact

Commercial

News

Search

Contact Us

Advertisers Information

Submit news/events

Search Stories/Text

Feedback

Advertisers Directory

Newsletter Archive

Photo Gallery

 

Banner Advertising Details

Newsletter Subscribe

Video Gallery

Policies

 

 

 

Privacy Policy

 

 


Cookie Policy

 

 



This site and its contents are © Copyright TetraMedia and/or the original author, photographer etc. All Rights Reserved.  Photographs are copyright by law.  If you wish to use or buy a photograph contact the photographer directly.
XLXL NEW PBW
LocalAds   DE  ES  FR  IT