https://nova.newcastle.edu.au/vital/access/manager/Index ${session.getAttribute("locale")} 5 Toxicity of palm oil mill effluent on the early life stages of Nile tilapia (Oreochromis niloticus, Linnaeus 1758) https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:41127 Wed 27 Jul 2022 09:39:25 AEST ]]> Salinity-fluctuation alters phycoremediation capacity of lead by Spirulina platensis https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:52746 Spirulina platensis under different environmental condition (including salinity) has not yet been investigated. Hence, this study aims to examine the phycoremediation capacity of Pb by S. platensis at different levels of salinity. S. platensis was exposed to Pb (4 mg/L) at different levels of salinity (up to 30 ppt) for 12 days. The results indicated that salinity fluctuation was able to reduce phycoremediation capacity of Pb. The highest removal efficiency of Pb was observed in optimum salinity and decreased significantly both in lower and higher salinity treatments. Physiological disturbances in S. platensis were indicated by changes in functional groups and morphology. The morphology of Spirulina platensis both in lower and higher salinity treatments appeared to have changed its shape, resembling a disjointed thread with fading color.]]> Wed 25 Oct 2023 14:58:33 AEDT ]]> Acute toxicity of palm oil mill effluent on zebrafish (Danio rerio Hamilton-Buchanan, 1822): Growth performance, behavioral responses and histopathological lesions https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:52702 Wed 07 Feb 2024 14:37:28 AEDT ]]> Altered reproductive behaviour in siamese fighting fish (Betta splendens) after exposure to different level of turbidity derived from palm oil mill effluent https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:55891 40 NTU) due to POME contamination significantly decreased total released egg but did not have significant impact on relative weight of released eggs and nest area. Decreased total released eggs was occurred due to several alterations in the reproductive behaviour of siamese fighting fish during both the premating and mating stages. Duration of premating and mating stage was significantly decreased at turbidity level of 60 NTU. During premating stage, the number and average time of fin spreads behaviour at turbidity level of 60 NTU were significantly increased. In addition to, the number of chasing behaviour was significantly decreased with increasing turbidity levels. Furthermore, several alterations in reproductive behavior was also observed in mating stage, including increasing number and average time of lead, copulation interval, number of tail beat, average time of lead, and average time of circlings, followed by decreasing number of leads and number of circlings. In addition to, number of copulation and eggs per copulation showed an increasing and decreasing pattern at turbidity level of 40 and 60 NTU, respectively. The study suggests that reproductive behavior of fish might consider as alternative approach to support POME remediation management, mainly for turbidity parameters.]]> Wed 03 Jul 2024 14:59:32 AEST ]]> Phytoremediation of palm oil mill effluent (POME) using water spinach (Ipomoea aquatica Forsk) https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:39492 Ipomoea aquatica) has potential to improve the quality of POME. This present study investigated the phytoremediation efficiency of POME, which contains high amount of chemical oxygen demand (COD), nitrate, phosphate using water spinach for up to 15 days and described its impact on the growth performance. Experimental design of this study consisted of five treatments with three replications namely: control: 0% POME (0 L POME + 10 L tap water), Treatment A: 25% POME (2.5 L POME + 7.5 L tap water), Treatment B: 50% POME (5 L POME+ 5 L tap water), Treatment C: 75% POME (7.5 L POME + 2.5 L tap water), and Treatment D: 100% POME (10 L POME). The results indicated that water spinach was able to reduce COD, nitrate, phosphate and color as 86.3%, 21.5%, 90.9 % and 95.3%, respectively. Water spinach had no influence on the growth performance even up to 75% of POME containing media. Furthermore, results showed that high concentrations of POME damage root structures, and ultimately impact the growth performance of water spinach. In conclusion, phytoremediation using water spinach can be a potential remediation method to improve the quality of COD, phosphate and nitrate.]]> Tue 09 Aug 2022 14:33:54 AEST ]]> Turbidity derived from palm oil mill effluent alters feeding ability of male siamese fighting fish (Betta splendens, Regan 1910) https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:52129 Thu 28 Sep 2023 15:10:56 AEST ]]> Commercial marine fish species from Weh Island, Indonesia: Checklist, distribution pattern and conservation status https://nova.newcastle.edu.au/vital/access/manager/Repository/uon:44826 Thu 27 Oct 2022 12:26:05 AEDT ]]>