Coral disease dynamics in the central Philippines
| Autor: | Longin T. Kaczmarsky |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
Time Factors
Octocorallia Oceans and Seas Philippines Coral Porites Marine Biology Aquatic Science Biology Prevalence medicine Animals Humans Mortality Reef Ecology Evolution Behavior and Systematics geography geography.geographical_feature_category Ecology Data Collection Black band disease Coral reef Anthozoa biology.organism_classification medicine.disease Belt transect Indo-Pacific |
| Zdroj: | Diseases of Aquatic Organisms. 69:9-21 |
| ISSN: | 1616-1580 0177-5103 |
| DOI: | 10.3354/dao069009 |
| Popis: | Limited quantitative research has been conducted on coral disease in the Philippines and baseline data are much needed. Field surveys for prevalence and distribution patterns were con- ducted from November 2002 to August 2003. Sites included the islands of Negros, Cebu, Siquijor, Panglao, Olango, Sumilon, Bantayan, Pescador, Balicassag and Palawan. In 154 belt transects, 10 026 Porites colonies were examined at 28 sites covering 3080 m 2 . Two syndromes, Porites ulcerative white spot (PUWS) and coral tumors, occurred at high prevalence. Tumors as high as 39.1% occurred among massive Porites, and PUWS was as high as 53.7% among massive and branching Porites. In 8 mo, 116 tagged colonies showed slow progression and low mortality. Along a 41 km human impact gradient centered on Dumaguete City (Negros), 15 sites were examined. Correlation analyses linked higher disease prevalence to anthropogenic influence (Spearman's rank correlation coefficient (rs) = -0.54, p = 0.04 for tumors and rS = -0.69, p = 0.005 for PUWS). In most sites disease prevalence was lower than in the sites near Dumaguete. High PUWS prevalence near uninhabited Sumilon Island appeared to be linked to the highly diseased reefs near Dumaguete City due to transmission of dis- ease along a cross-shelf front formed between the Tanon Strait and Bohol Sea. Other observations included 12 potential new host species for PUWS (4 new genera and 1 octocorallia) and 5 likely new hosts for black band disease (BBD) in the Philippines, and a relatively high prevalence (7.8%) of BBD in 1 site in western Palawan. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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