American Association: Biology - Corals being killed off by fungus disease

THE CURRENT decimation of the coral reefs is being caused by a fungus, normally only found on land, which is being washed out to sea by soil erosion.

Scientists have studied the "bleaching" of reefs in the Florida Keys in the US and found that the fan-shaped corals are being attacked, causing lesions, tumours and eventually death.

Drew Harvell, associate professor of ecology at Cornell University, told the meeting that the death of hundred-year-old corals from diseases that they would have normally survived could be an early warning of far more serious problems for the global environment. "When we see corals that have persisted for hundreds of years suddenly die from opportunistic infections, we have to wonder what has changed in their environment," Prof Harvell said. Up to 40 per cent of the sea fan corals in the Florida Keys are now infected by fungal disease which scientists have attributed to falling water quality and increased biological stress due to rising ocean temperatures.

Garret Smith, of the University of South Carolina, identified the microbe attacking the coral fans as a common, soil-dwelling fungus called Aspergillus which was washed out by rivers flowing through intensively farmed agricultural land.

The fungus collects on the flexible, fan-shaped surfaces of the coral and causes an infection which first discolours the reefs and eventually kills them. The scientists believe sea fans, which position themselves perpendicularly to water currents to filter feed, are especially vulnerable to any disease-causing microbe.

Kiho Kim, a post-doctoral research associate at Cornell, said there is a growing consensus that the ocean ecosystems are now being degraded to such an extent that they are becoming havens for new infectious diseases.

Suggested Topics
Start your day with The Independent, sign up for daily news emails
Have you tried new the Independent Digital Edition apps?
ebooks
ebooksA special investigation by Andy McSmith
  • Get to the point
Latest stories from i100
Have you tried new the Independent Digital Edition apps?
Independent Dating
and  

By clicking 'Search' you
are agreeing to our
Terms of Use.

iJobs Job Widget
iJobs General

Recruitment Genius: Marketing Lead

Negotiable: Recruitment Genius: One of the North West's leading providers of w...

SThree: Trainee Recruitment Consultant

£20000 - £25000 per annum + Commission: SThree: Are you great at building rela...

Recruitment Genius: SEO Executive

£16000 - £22000 per annum: Recruitment Genius: An SEO Executive is required to...

Recruitment Genius: Sales Executive - OTE £38,000

£16000 - £38000 per annum: Recruitment Genius: Due to continued expansion, an ...

Day In a Page

Revealed: Why Mohammed Emwazi chose the 'safe option' of fighting for Isis, rather than following his friends to al-Shabaab in Somalia

Why Mohammed Emwazi chose Isis

His friends were betrayed and killed by al-Shabaab
'The solution can never be to impassively watch on while desperate people drown'
An open letter to David Cameron: Building fortress Europe has had deadly results

Open letter to David Cameron

Building the walls of fortress Europe has had deadly results
Tory candidates' tweets not as 'spontaneous' as they seem - you don't say!

You don't say!

Tory candidates' election tweets not as 'spontaneous' as they appear
Mubi: Netflix for people who want to stop just watching trash

So what is Mubi?

Netflix for people who want to stop just watching trash all the time
The impossible job: how to follow Kevin Spacey?

The hardest job in theatre?

How to follow Kevin Spacey
Armenian genocide: To continue to deny the truth of this mass human cruelty is close to a criminal lie

Armenian genocide and the 'good Turks'

To continue to deny the truth of this mass human cruelty is close to a criminal lie
Lou Reed: The truth about the singer's upbringing beyond the biographers' and memoirists' myths

'Lou needed care, but what he got was ECT'

The truth about the singer's upbringing beyond
Migrant boat disaster: This human tragedy has been brewing for four years and EU states can't say they were not warned

This human tragedy has been brewing for years

EU states can't say they were not warned
Women's sportswear: From tackling a marathon to a jog in the park, the right kit can help

Women's sportswear

From tackling a marathon to a jog in the park, the right kit can help
Hillary Clinton's outfits will be as important as her policies in her presidential bid

Clinton's clothes

Like it or not, her outfits will be as important as her policies
NHS struggling to monitor the safety and efficacy of its services outsourced to private providers

Who's monitoring the outsourced NHS services?

A report finds that private firms are not being properly assessed for their quality of care
Zac Goldsmith: 'I'll trigger a by-election over Heathrow'

Zac Goldsmith: 'I'll trigger a by-election over Heathrow'

The Tory MP said he did not want to stand again unless his party's manifesto ruled out a third runway. But he's doing so. Watch this space
How do Greek voters feel about Syriza's backtracking on its anti-austerity pledge?

How do Greeks feel about Syriza?

Five voters from different backgrounds tell us what they expect from Syriza's charismatic leader Alexis Tsipras
From Iraq to Libya and Syria: The wars that come back to haunt us

The wars that come back to haunt us

David Cameron should not escape blame for his role in conflicts that are still raging, argues Patrick Cockburn
Sam Baker and Lauren Laverne: Too busy to surf? Head to The Pool

Too busy to surf? Head to The Pool

A new website is trying to declutter the internet to help busy women. Holly Williams meets the founders