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Disease Prevalence And Distribution Of Coral Reef Associated Bacteria In Some Impacted Sites At The Red Sea Coast | 26989
ISSN: 2155-9910
Journal of Marine Science: Research & Development
Open Access
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Coral disease prevalence and distribution were surveyed in three discrete impacted sites along the Red Sea coast. Prevalence
differences between reefs were significant (ANOVA; F=10.777, p<0.0001). Sites closed to oil pollution (sites 1 & 2) displayed
much higher levels of disease prevalence (25.3%�8.3 2 and 18.5%�3.1 respectively), than site 3 that close to land filling (12.9%�
2.1). A total of 99 coral braches representing 20 important reef building scleractinian species affected by at least 12 diseases/
syndrome at the surveyed sites. However, site 3 is characterized by the highest diversity (Simpson?s Index=0.081) and highest
percentage cover of life coral (35.2%�11.4) showed the lowest coral diseases number (3). In opposite, 10 coral diseases were
recorded at site 1 and 8 coral diseases at site 2. While, the coral disease atramentous necrosis attained the highest prevalence
percentage at sites 1 & 2 (3.2% & 4.5% respectively) did not recorded at site 3. Sediment damage disease recorded the highest
prevalence percentage at site 3 (5.1%) but did not record at sites 1 & 2. Diseases having lowest percentage cover were white
band disease (sites 1 & 2) and white tips disease. The most commonly distributed disease (atramentous necrosis) infected five
corals in site 1 and six corals in site 2. The least commonly distributed disease (white tips) infected only two corals (Acropora
humilis and Acropora formosa) at site 3. It is observed that the coral disease atramentous necrosis is always associated with
Vermetidae predation in both earlier and later stages of the disease and in many cases with Tridacna boring in later stages of
the disease; while Drupella predation is associated with skeletal eroding band. A coral pathogen was isolated from the diseased
Stylophora pistillata, Porites sp. and Acropora sp. the pathogenic bacterium referred to as Vibrio fischeri.
Biography
Montaser A M M Al-Hammady has completed his PhD from Assuit University, Egypt and Postdoctoral studies from National Institute of Oceanography and Fisheries.
He is approved as Environmental Consultant from Egyptian Environmental Affairs Agency-Presidency of the Council of Ministers. He has published more than 15
papers in reputed journals and has been serving as an Editorial Board Member of repute.
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