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Observations of a new source of coral mortality along the Kenyan coast
McClanahan, T. R.; McLaughlin, S.M.; Davy, J. E.; Wilson, W. H.; Peters, E. C.; Price, K.L.; Maina, J. (2004). Observations of a new source of coral mortality along the Kenyan coast. Hydrobiologia 530/531: 469-479. dx.doi.org/10.1007/s10750-004-2672-6
In: Hydrobiologia. Springer: The Hague. ISSN 0018-8158; e-ISSN 1573-5117
Peer reviewed article  

Available in  Authors 

Keyword
    Marine
Author keywords
    Astreopora, Echinopora, coral disease, coral histology, marine fungi, Montipora

Authors  Top 
  • McClanahan, T. R.
  • McLaughlin, S.M.
  • Davy, J. E.
  • Wilson, W. H.
  • Peters, E. C.
  • Price, K.L.
  • Maina, J.

Abstract
    In early 2002 coral mortality occurred along 600?km of coastline from Tanzania to Kenya. Astreopora, Echinopora , and Montipora species were severely affected, with Montipora being nearly eliminated from Kenyan reefs. Acropora , Platygyra , Goniopora , and massive Porites were also affected; however, Porites and Goniopora rarely died and often recovered, whereas death for most other species occurred within 2?weeks. In Echinopora and Montipora , a dull ashy tissue color and brittle skeletons characterized the early stages of this event with a mucus layer on the tissue surface in intermediate stages. Mucus and embedded debris then disappeared and surfaces were left covered in a white calcareous dust that sometimes capped a black layer. Astreopora tissues became dull and pale, and seldom produced mucus; eventually the skeleton became bare and white. Either a colorless translucent or brownish thin margin of tissue was visible between living tissue and bare skeleton, depending on species. Scanning electron micrographs of affected corals revealed the presence of fungi. Histology and staining showed that the fungi were mostly in the three genera that died from the syndrome and it may be that fungi invaded and killed corals weakened by another unidentified pathogen.

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