[Coral-List] Porites Line Disease

Julian Sprung julian at tlfusa.com
Tue Nov 27 07:05:10 EST 2007

Can someone post a link to some good photos of Porites Ulcerative White Spot disease? 

I remember photographing colonies of Porites in the Solomon Islands with pale whitish spots on them, and after careful examination I found that this appearance was caused by small corallophila-like snails. I was just wondering how the appearance in this disease differs from what I saw.



-----Original Message-----
From: coral-list-bounces at coral.aoml.noaa.gov on behalf of Laurie Raymundo
Sent: Mon 11/26/2007 6:09 PM
To: shashank Keshavmurthy
Cc: coral-list at coral.aoml.noaa.gov
Subject: Re: [Coral-List] Porites Line Disease
Hello, Shashank:
Porites Ulcerative White Spot disease is most certainly not a prelude to 
what is being called "Line Disease".  There is no pigmentation response 
associated with ulcerative white spots; the spots are isolated patches of 
bleached polyps which can progress to tissue loss.  It is infectious and can 
cause significant mortality. What is being referred to as "Line Disease" may 
be what we are now calling Pigmentation Response: it is not an infectious 
disease, but it seems to be a stress-related response to a number of things, 
included activities by boring vermetid snails, macroalgal abrasion, silt 
deposition abrasion and possibly certain fish bites.  I can't tell this 
without pictures, of course, but this name has been used in the past to 
describe what we now refer to as PR.

Laurie Raymundo

Dr. Laurie J. Raymundo
Coral Ecologist
University of Guam Marine Laboratory
UOG Station
Mangilao, Guam 96923
Tel: (671) 735-2184
Fax: (671) 734-6767

----- Original Message ----- 
From: "shashank Keshavmurthy" <iamshanky15 at yahoo.com>
To: "Thomas Goreau" <goreau at bestweb.net>; <coral-list at coral.aoml.noaa.gov>
Sent: Monday, November 26, 2007 3:12 PM
Subject: Re: [Coral-List] Porites Line Disease

> Dear Tom and the listersIt is true that lost of Porites species is being 
> affected by this line disease.  I just came back from the 10th Japanese 
> Coral Reef Society Meeting and there was a presentation on the Porites 
> ulcerative white spot disease, but as I could see, most of the photos 
> showed what Tom mentions Porites Line Disease, with clear white, or Pink 
> or even some blue lines.....
> It is being seen in Porites cylindrica in Ishigaki Islands, Okinawa.  I 
> feel that the mistaken identity of ulcerative white spot disease is 
> nothing but pre-Line disease symptom, which has progressed to the line 
> disease.
> But definitely there is a presence of the line disease in large number of 
> Porites cylindrica in Okinawa...
> As I understood from that presentation, histopathological and 
> microbiological work is being carried out, but results are yet to be seen 
> and I do not know when that will be possible.....
> Regards
> Shashank
> "Role of Infinitely Small in Nature is Infinitely Large" - Louis Pasteur
> ====================================
> Keshavmurthy Shashank
> Research Student, Graduate School of Kuroshio Science
> Laboratory of Environmental Conservation
> Kochi University, Monobe Campus, B 200
> Nankoku, Kochi, 783-8502, Japan
> Mobile: 81 08039253889
> My WebPage: http://web.mac.com/coralresearch/iWeb/shashank/Welcome.html
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