Tag Archives: Island Garden City of Samal
Modelling destination attributes and tourist attitudes towards Island Garden City of Samal [electronic resource]
Fish Associated with the Seagrass Beds of Samal and Talikud Islands, Davao Del Norte, Philippines
A total of 221 fish species comprising 47 families were caught and identified using a beach seine in the two seagrass stations of Samal and Talikud Islands, Davao del Norte, Philippines monitored monthly in both diel periods (day and night time) from March 1998 to April 1999. The survey was topped by a scribbled rabbitfish Siganus spinus (Family Siganidae), an economically important fish caught abundantly during daytime. Most of the physicochemical parameters were found to be insignificantly correlated to the total ichtyofauna in the two seagrass stations using Person Correlation Analysis. The total abundance and biomass data using t-test showed that there was no significant difference between the two stations but in each station, day and night catches differ significantly. Species diversity and species richness also differ significantly between the two stations and in each station between day and night time using ANOVA test.
Antibacterial Activity of Soft Coral Species From the Island Garden City of Samal
Methanol extracts of nine soft coral species from the Island Garden City of Samal (IGACOS) were tested for their antibacterial activity against four species of bacteria. The results of the Analysis of Variance show that the activity of all nine soft coral species tested against Staphylococcus aureus and Bacillus subtilis are highly significant. In the test against Staphylococcus aureus, it was Cladeilla sp. that gave the highest zone of inhibition followed by Anthelia sp., Dendronephthya sp., Sinularia sp. 2, Sarcophyton sp. 1, Sarcophyton sp. 2, Nephthea sp., Sinularia sp. 1, and Xenia sp. the latter giving the smallest zone of inhibition. All nine species also tested positive against Bacillus subtilis showing range of activity from highest to lowest as follows: Xenia sp., Anthelia sp., Nephthea sp., Dendronephthya sp., Cladiella sp., Sinularia sp. 2, Sinularia sp. 1, Sarcophyton sp. 1, Sacrophyton sp. 2. The test for Salmonella enteritidis and Escherichia coli were negative for all nine species.
Results show that the methanolic extracts of soft coral species were effectively against Gram-positive bacteria. This finding is, however, far from being conclusive as only two species of Gram-positive bacteria were used as basis for sensitivity. Further tests, using more species of both Gram-positive and Gram-negative bacteria is recommended.