Southeast Asian Fisheries Development Center, Aquaculture Department
MetadataShow full item record
Text in Hiligaynon and in English.
SEAFDEC Aquaculture Dept. (2006). Oil spill. Tigbauan, Iloilo, Philippines: Aquaculture Department, Southeast Asian Fisheries Development Center.
PublisherAquaculture Department, Southeast Asian Fisheries Development Center
Format8 leaves : col. ill.
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Adsorption and biomass concentration of thraustochytrid Schizochytrium aggregatum (Goldstein and Belsky) in Bunker C Oil BGS Sarinas, LD Gellada, MLT Torrigue, DN Sibonga, ES Torrato, JG Malagad, JG Feril, LAJ Bondoc, JCA Roncal & JA Tornalejo -
Journal of Environmental Science and Management, 2014 - School of Environmental Science and Management, University of the Philippines Los BañosDiverse array of microorganisms such as bacteria, fungi and protists are involved during oil spill. Each microorganism has its own specific function whether it has to degrade or adsorb hydrocarbons. One important microorganism is the Thraustochytrid that is a fungoid protist and are common in marine and estuarine habitats. Numerous studies existed on the biodegradation and adsorption of Thraustochytrids on various substances but not on Bunker C oil. Thus, this study aimed to determine the adsorption capacity and mean biomass of Thraustochytrids in Bunker C oil using different cell densities measured in grams. All of the three treatments or cell densities (1 x 105 cells ml-1, 1 x 106 cells ml-1 and 1 x 107 cells ml-1) were triplicated and average values were recorded. Oil dispersant was used as a control. It showed that Thraustochytrid with 1 x 107 cells ml-1 showed the highest adsorbed oil (.057 ḡ) among the three cell densities and showed significant difference at p = .01 but comparable to the control (.066 ḡ). In terms of biomass concentration, all cell densities showed no significant difference at p = .01. Thraustochytrid is a promising tool during oil spill because it has the capacity to adsorb oil.
Interactive effects of vitamin C and E supplementation on growth performance, fatty acid composition and reduction of oxidative stress in juvenile Japanese flounder Paralichthys olivaceus fed dietary oxidized fish oil A study was conducted to determine the interactive effects of vitamin C (VC) and E (VE) supplementation on growth, fatty acid composition and oxidative status of Japanese flounder juveniles. Fish (initial average body weight of 1.1 ± 0.1 g) in triplicate were fed five test diets for 60 days. Control diet contained fresh fish oil (FFO, 8.9 meq/kg) with 100 mg α-tocopherol (α-Toc) equivalents/kg of VE and 500 mg ascorbic acid (AsA) equivalents/kg of VC (FFO100E/500C). The other four diets contained oxidized fish oil (OFO, 167.8 meq/kg) with varying levels of VE (mg/kg) and VC (mg/kg) (OFO100E/500C, OFO200E/500C, OFO100E/1000C and OFO200E/1000C). Fish fed FFO100E/500C and OFO100E/500C had no differences in body weight gain (BWG). However, fish fed OFO200E/1000C diet had a significantly lower BWG than FFO100E/500C. Fish fed OFO200E/500C and OFO100E/1000C showed no differences in thiobarbituric acid-reactive substance values compared with FFO100E/500C. Increasing the levels of VC and VE supplementation increased liver AsA and α-Toc contents, respectively. Liver α-Toc content was significantly increased with incremental dietary VC levels, indicating a sparing effect of VC on liver α-Toc content of fish. Increasing the levels of dietary VC and VE supplementations decreased concentrations of 20:5n-3, 22:5n-3 and 22:6n-3 in fish liver. Fish fed OFO100E/500C and OFO200E/1000C diets showed higher oxidative stress condition than those fed FFO100E/500C. In conclusion, dietary VC and VE supplementation could maintain normal growth and health condition of juvenile Japanese flounder fed OFO. However, high doses of both vitamin supplements induced fish lipid peroxidation under oxidative stress condition.
Initial assessment of the bacterial population of Guimaras waters and soil after the Solar I oil spill C Sombito, G Lio-Po, R Sadaba & R Torreta -
Philippine Journal of Natural Sciences, 2009 - University of the Philippines VisayasA massive oil spill occurred near the shores of Guimaras Island, Philippines in 11 Aug 2006 caused by the Sunken MT Solar I vessel. The oil spill spread to neighboring towns of Guimaras damaging the marine coastal environment, consequently,causing health and economic problems, particularly, by affecting local fisheries, wildlife and tourism. Hence, this study was conducted to assess, quantify and isolate indigenous bacteria with potential petroleum hydrocarbon-degrading properties that could be used for bioremediation of oil spill contaminated areas in Guimaras and nearby provinces.