Journal Jurnal Ilmiah Perikanan dan Kelautan-
Jurnal Ilmiah Perikanan dan Kelautan, Volume 1, pp 117-120; doi:10.20473/jipk.v1i1.11706
Abstract:The higher toxicity of α-linolenic acid from Ulva sp. seaweed showed the high algicidal activity against Chattonella marina and Heterosigma akashiwo. Among six species tested, C. marina and H. akashiwo was the most susceptible to this fatty acid, whereas LC50 of α-linolenic acid was estimated to be 3.22 and 0.58 µg/mL, respectively. Furthermore, α-linolenic acid also showed algicidal activity against Alexandrium tamarense and A. taylori. It is suggested that α-linolenic acid is useful mitigation agents to Harmful Algal Bloom effect, especially on Chattonella marina and Heterosigma akashiwo.
Jurnal Ilmiah Perikanan dan Kelautan, Volume 1, pp 79-86; doi:10.20473/jipk.v1i1.11702
Abstract:Common carp (Cyprinus carpio) is fish with high metabolism during transportation caused fish stress and could due to impare condition of fry fish and also lead to mortality post transpotation. As effort to minimize high metabolism during transportation was use bandotan leaf as nature antimetabolic so that we need to know how far bandotan effect to condition by digestibility and respiration of common carp fry during post transportation critical periode. The aim of this study was to know condition of common carp fry for 3 days post transportation by digestibility and respiration with bandotan leaf. This study used Complete Random Design. The treatment were A (water 0,5 l) B (bandotan leaf water dose 3,25 g/l) dan C (bandotan leaf water dose 4,5 g/l), each treatment with 6 replications. Primary parameter were digestibility (%) and respiration (time). Secondary parameter were mortality (%), and water quality (disolve oxygen, temperature, ammonia and pH). The result show that bandotan leaf was significantly influenced (p
Jurnal Ilmiah Perikanan dan Kelautan, Volume 1, pp 59-66; doi:10.20473/jipk.v1i1.11699
Abstract:African catfish (Clarias gariepinus) is one of fish consumption use to fulfill animal protein. The fulfillment need of animal protein with aquaculture effort, where as in the aquaculture effort will larvae quality increased. Increasingly of larvae quality with natural food had been adding feed supplement. Natural food to used is Daphnia spp. and then food supplement to used is viterna. The viterna will increase Daphnia nutritions, because of the viterna contains many nutritions to survival and growth of African catfish. The aim of this study was to know the influence of Daphnia spp. enrichment with viterna to survival and growth of African catfish (Clarias gariepinus) larvae. The rearing of larvae during 40 days. This study used Complete Random Design. The treatment were A (present Daphnia spp. without viterna), B (Daphnia spp. enrichment with viterna 10 ml/L dose), C (Daphnia spp. enrichment with viterna 10 ml/L dose), D (Daphnia spp. enrichment with viterna 10 ml/L dose), E (Daphnia spp. enrichment with viterna 10 ml/L dose) dan F (Daphnia spp. enrichment with viterna 10 ml/L dose), each treatment with 4 replications. The result show that viterna applications to Daphnia was significantly influenced (p
Jurnal Ilmiah Perikanan dan Kelautan, Volume 1, pp 73-78; doi:10.20473/jipk.v1i1.11701
Abstract:Feed is one of the factors determines the success of a fish farm. Feed-quality feed stuffs that require high quality also, which still rely on imports, especially fish meal and soybean oilcake. Effort to reduce dependence on import of feed stuff is searching for alternative feed stuffs that the quality is quite good, cheap, easily obtained and can reduce cost of production. One of the feed stuff as an alternative source of animal protein feed that need to be examined is the prawn waste. Prawn waste meal enough potential to be used as fish feed with a crude protein content 45.29% and 17.59% crude fiber was alternative feed stuff for fish meal. The usage of prawn waste as a feed stuff should be through the handling and processing to further improve the nutrient value of waste. Prawn waste processing in this research consists of two ways, that is waste cooking prawn on the high pressure (100 kpa), and conducted fermentation by using probiotic. The existence of microorganisms activity during the fermentation process will cause changes of feed stuffs either through physically and chemicals. Probiotic is a microbe colony that is rich in celulolytic, lignolytic and proteolytic bacteria. The aim of this research is to know the influence probiotic on the prawn waste cooked with high pressure to increase the protein content and to decrease the crude fiber content. Method as used in the research is experimental method. Experiment design that used at research is Completely Randomized Design with 4 treatments and replicates 5 times. To get the data is conducted procsimat analysis on the crude protein content and crude fibers from each experimental unit. That result data analyzed with the Analysis of Varian continued with Duncan’s Multiple Range Test. The results of research is known that dosaged probiotic at process of prawn waste cooked fermentation not different to crude protein contents of the waste cook fermented prawn. Crude fiber content of the waste cook fermented prawn using probiotik (P1, P2, P3) has decreased if compared with waste cooking fermented prawn without using probiotic (P0)
Jurnal Ilmiah Perikanan dan Kelautan, Volume 1, pp 31-36; doi:10.20473/jipk.v1i1.11695
Abstract:Daphnia magna has good nutrition to carry on egg produce and fry of fish cupang, maskoki, oscar, tetra, and also can used for food source of fry and seed. Daphnia magna not only supply from natural environment, cause their growth deppend on fertilizer as food and environment condition. The other side: high population density, limited of food source low temperature and shorter irradiation can produce dorman egg (ephippia). The dorman eeg can use for Daphnia magna stock which way by hatching. The factor that can be influence for ephippia hatch are temperature and density. Based on this fact, a research about influence of different temperature and ephippia density for ephippia hatch of Daphnia magna. The purpose of this research was to know the influence of different temperature and ephippia density for ephippia hatch of Daphnia magna. This research has experimental characteristic and use Factorial Completely Randomized Design with three experiments of temperature (A factor), three experiments of density (B factor) and three times replicated. There are 9 kinds of combination between density and temperature. The parameter which checked in this research is degree of hatch of ephippia Daphnia magna and water quality that is dissolve oxygen rate, NH3 and of pH hatch media. The result of the analysis showed that the temperature and density influence of hatching Daphnia magna ephippia. The best result can be used for hatching Daphnia magna ephippia is temperature at 25oC with density 50 ephippia /100 ml giving highest result for the hatch of ephippia Daphnia magna. There are interaction betwen temperature and density for hatching.
Jurnal Ilmiah Perikanan dan Kelautan, Volume 1, pp 87-92; doi:10.20473/jipk.v1i1.11703
Abstract:The aim of this study were to know the level of contamination againts Salmonella sp. bacteria in fresh white shrimp at the traditional market in surabaya. The fresh white shirmp were collect from 5 areas in Surabaya (East, South, Center, North and West). Total samples were 25 (five samples for each area) dan each sample were weight 100 gram. Sample from each area were using mortar and making for a suspention to take the isolate. More over using SPSS medium for enriched them further more were observed under the microscope also were test for the biochemistry characteristics. Data from the enrichment for Salmonella sp. bacteria were descriptive analyze and to know the level of contaminations we used chi-square : the result of this study were indicate that the fresh white shrimp at the traditional market in Surabaya were contaminated with Salmonella sp. bacteria, but they didn’t show the significant different at the contaminant fish levels (p > 0,05).
Jurnal Ilmiah Perikanan dan Kelautan, Volume 1, pp 15-20; doi:10.20473/jipk.v1i1.11693
Abstract:One of the most favourite fish that farmer fish cultivated because its high economic value was gouper (C. altivelis). The obstacle in cultivation system was caused by Vibrio algynolitycus. Vibrio angullarum, Vibrio parahaemolyticus. Vibrio harveyi infection. Many deseases that attacked to the grouper was caused by the role of pathogen specific as a ligan and its reseptor. The aim of these study was to improve and to know the role of reseptor in vibriosis mechanism with tested spesific reseptor protein of grouper Cromileptes altivelis. These study used experimental and descriptive methode with identified of grouper reseptor, Hemaglutinin test and observation use electron microscope. These study result showed that reseptor protein of C. altivelis was found in its eyes. These showed spesivity and reactivity to the vibriosis specific epitop.
Jurnal Ilmiah Perikanan dan Kelautan, Volume 1, pp 37-42; doi:10.20473/jipk.v1i1.11696
Abstract:The aim of this research was to know the effect of honey supplementation in feed of male main freshwater cray fish red claw to larva sex ratio and the level of survival of freshwater cray fish and to get the best doses of honey to give highest male sex ratio. This research was done at Laboratory of Fishery Education, Fishery and Marines Faculty, Airlangga University in October 2007 until March 2008. Methods of this research was experimental and used completely randomized designed with 7 treatments. Giving of honey with differences doses were A ( 0 ml/kg) control, B ( 50 ml /kg), C ( 100 ml /kg), D ( 150 ml /kg), E ( 200 ml /kg), F ( 250 ml/kg) and G ( 300 ml/kg) which each treatment got three times replicated. Data processed by Analysis of Variance (ANOVA). The result of this research showed that supplementation of honey in feed male main freshwater cray fish red claw not significantly different to larva sex ratio and survival rate of freshwater cray fish. Otherwise, result of the supplementation of honey in feed of male main freshwater cray fish showed the increasingly male sex ratio of freshwater cray fish red claw larvae.
Jurnal Ilmiah Perikanan dan Kelautan, Volume 1, pp 103-116; doi:10.20473/jipk.v1i1.11705
Abstract:Gracilaria verrucosa is one of the most potential seaweed and consist of a high economy value. G. verrucosa had been succed cultivated in pond and it produces gel (Lewmanomont, 1995). Gracilaria cultivation in pond generally needs a wide area, easily infected by moss and shellfish so that obstructs Gracilaria’s growth, even decreases it’s quality (Aslan, 1998). One of the solution to solve the problem above is cultivate another seaweed G. verrucosa indoor using the combination of NPK and TSP. NPK and TSP are used to increase growth and formation of chlorophyll a which used to fotosintesis process (Anggadiredja dkk., 2006). The absortion of hara element will add nutrient and influenced to the G. verrucosa’s quality and quantity. This research uses water concentration measuring because gel content measuring is relatively expensive. The goal of this research is knowing the influence of NPK and TSP to G. verrucosa’s growth, water concentration and quantity of chlorophyll a. The result of G. verrocosa shows that daily growth heavy of G. verrocosa in D treatment extremely different (p
Jurnal Ilmiah Perikanan dan Kelautan, Volume 1, pp 7-14; doi:10.20473/jipk.v1i1.11692
Abstract:The aim of these study was to know plankton (phytoplankton and zooplankton spesies and density at Sengguruh dam, Karangkates, Lahor, Wlingi Raya and Wonorejo, and to estimated trophic status these dams use phytoplankton and zooplankton density approachment. These study used descriptive methode with survey technic. Data wich is taken from each dam is taken from four different station that suggested the representated dam condition. The result showed according to the range phytoplankton density: at Karangkates between 144-236 ind/ml is clustered as oligotrophic, the range phytoplankton density at sengguruh between 217-313 ind/ml is clustered as oligotrophic. At Lahor dam between 5.35612.704 ind/ml is clustered as mesotrophic, at Wlingi Raya dam between 74-1480 ind/m' is clustered as mesotrophic to eutrophic, while at Wonorejo dam between 48-288 ind/ml is clustered as oligotrophic waters. According to the range zooplankton density: at Karangkates dam between 28.153-132.056 ind/lt is clustered as mesotrophic, Lahor dam between 4.996-14.275 ind/lt is clustered as mesotrophic, Wlingi Raya dam between 623-3.114 ind/lt is clustered as oligotrophic to mesotrophic, and Wonorejo dam between 2-6 ind/lt is clustered as mesotrophic. The differences of estimation result of trophic level at each dam according to phytoplankton and zcoplankton density data is showed that dam ecosystem was imbalance