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INDONESIA
Indonesian Journal of Tropical Aquatic
Published by Universitas Muhammadiyah Malang
ISSN : -     EISSN : 26224836     DOI : -
Core Subject : Agriculture,
Agriculture, Biological Sciences & Forestry
Indonesian Journal of Tropical Aquatic (IJOTA) is open access publishes papers two times a year in February and Augst. IJOTA will publish the research results useful for the sustainability of fisheries. IJOTA is a scientific journal that discusses the results of research in science, technology, marine and freshwater fisheries that have not been published. Articles should be created in a language that is easily understood by non-specialist readers in the topic of the article itself, but interested in research. This scientific article includes the results of research on Aquaculture (Fish Nutrition, Fish Health and Diseases, Water Quality, Fish Genetics Improvement and Breeding, Fisheries Engineering and Biotechnology), Aquarium Sciences, Aquatic Ecology (Marine, Brackish, Freshwater), Conservation of Aquatic Resources and also Coastal Management. A journal script should be written in English.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Perairan
Articles 6 Documents
 1 
Search results for , issue "Vol. 1 No. 1 (2018): August" : 6 Documents clear
Enhancement Glutathione Peroxidase Activity and α2-Macroglobulin Gene Expression of Macrobrachium rosenbergii Fed With Aqueous Morinda citrifolia Leaves Extract-Supplemented Diet Atika Marisa Halim; Arief Prajitno; Chin Chyuan Chang
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 1 No. 1 (2018): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v1i1.4849

Abstract

Morinda citrifolia, known commercially as noni is often used for enhance immunity, these plant rich of phenolic compound with antioxidant properties. In the present study, Macrobrachium rosenbergii were fed with diets containing of aqueous M. citrifolia leaves extract (AMLE) at 0.6, 4 and 6 g kg-1. Glutathione peroxidase (GPx) activity was conducted to measure immune parameter, these parameter was evaluated before and after 7, 21, 35, 49 and 63 days of feeding trial. Immune gene expression of α2-macroglubulin (α2-M) was evaluated in this study. The results showed that after 63 days of feeding treatment, significantly increased in GPx activity. Gene expressions of α2-macroglubulin was significantly upregulated. These results recommend that administration of AMLE can be used as an immunostimulant and regulated immune response and immune gene expression in M. rosenbergii. Keyword: Morinda citrifolia, Macrobrachium rosenbergii, GPx, α2-M
MEAT BONE MEAL (MBM) AND POLTRY BY-PRODUCT (PBM) TEST ON GRANULE TOWARDS THE GROWTH AND SURVIVAL RATE OF EEL (Anguilla Bicolor) Stadia ELVER Triana Indri Astuti; Hany Handajani; Riza Rahman Hakim
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 1 No. 1 (2018): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v1i1.5855

Abstract

This research was conducted at Hatchery Fishery Laboratory in University of Muhammadiyah Malang on February 15 - March 17, 2018. The purpose of this research was to identify the meat bone meal (MBM) and poltry by-product (PBM) test on granule and the best treatment to the growth and survival rate of Eel (Anguilla bicolor) stadia elver. The method used was experiemental by Completely Randomized Design (RAL) with 3 different treatments on granule composition, P1 (Commercial Granule), P2 (70% Commercial Granule  and 30% MBM), P3 (70% Commercial Granule and 30% PBM), and each treatment done repeatedly three times. Furthermore, the data were analyzed by ANAVA and continued with BNT test. The results of this study indicated that the meat bone meal (MBM) and poltry by-product (PBM) test on granule had a significant effect on the absolute growth rate, a very significant effect on DGR, and not significantly different on Eel. The absolute best growth rate was on P2 2.24 ± 0.71. The best DGR was on P1 (5.55 ± 0.33). Based on the research results, it was concluded that feeding the granule based on meat bone meal increased the growth and survival rate, and also could be the substitution granule for Eel ( Anguilla bicolor). Keywords: Anguilla bicolor, MBM, PBM, Growth
EFFECTIVENESS OF COMBINATION OF FEED FORM CAKE AND FEED NATURAL SILK WORMS (TUBIFEX SP) ON FEED CONVERSION RATIO (FCR), SPECIFIC GROWTH RATE AND GIANT FRESHWATER PRAWN SURVIVAL (MACROBACIUM ROSENBERGII) LARVAL STAGE Ganjar Adhywirawan Sutarjo
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 1 No. 1 (2018): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v1i1.5938

Abstract

This study aimed to determine the effectiveness of the combination of cake feed and silk worm feed on feed coneration ratio (FCR), Survival, and specific growth rate (SGR) of prawn larvae (Macrobacium rosenbergii). The research was conducted on 8 February - 9 March 2018 at the Fisheries Laboratory of University of Muhammadiyah Malang. Shrimp used in this study is larval prawns stadia larvae. This research was conducted by experimental method using randomized block design (RAL) with 5 treatments and 4 replications. P1 100% silk worm and 0% cake feed, P2 25% silk worm and 75% cake form feed, P3 50% silk worm and 50% cake form feed, P4 75% silk worm and 25% cake feed, P5 100 % feed cake form. Feed is given in ad-station for 40 days. Observed data include Feed coneration ratio (FCR), Survival, specific growth rate (SGR), and water quality. The results showed that the combination of cake feed and silk worm feed had a significant effect on the growth rate of Specific (SGR) Fcount 7.58> from F. Table 5% (3.06) 1% (4.89), While no effect For Figures F count 0.90 <of F. Table 5% (3.06) 1% (4.89) and Feed Converation Ratio as F count 2.23 <of F. Table 5% (3.06) 1 % (4.89). Water quality on maintenance media against a reasonable range for shrimp cultivation. Keywords: fish cake, silk worm, giant freshwater prawn, growth
EFFECTIVENESS OF CHERRY LEAF EXTRACT (Muntingia calabura) WITH DIFFERENT LEVELS AS TREATMENT OF SEEDS OF SANGKURIANG CATFISH (Clarias gariepinus) INFECTED BY Trichodina sp Moh. Nurhuda; Marry Ann Kholista; Yuliani Ismi; Nurfitri Maulidiya; Hariyadi Hariyadi; Riza Rahman Hakim
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 1 No. 1 (2018): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v1i1.5980

Abstract

Sangkuriang catfish (Clarias gariepinus) is a leading commodity of Indonesian freshwater fishery. Production continues to increase in 2016 reached 22%. cultivators experience constraints on seeding and enlargement due to ectoparasites Trichodina sp. this parasite attacks the outer part of the body marked by the spots on the body. Prevention and treatment of many usses of chemicals that can adversely affect the human body and environtment, so it takes another alternative to replace these chemicals that can adversely affect the human body and environment, so it takes another alternative to replace these chemicals. Cherry Leaf contain compounds Flavonoid, Tannin, Triterpenoid, Saponin and Polifenol as antioxidants, Cherry Leaf useful as an antibacterial. The method used in this research is the experimental method and using Completely Randomized Design (RAL). Concentrations of cherry leaf extract (Muntingia calabura) given include 1%, 2%, 3%, 4% and 5% there were 5 treatments and 4 replications. The data obtained were analyzed by ANAVA method (variance analysis) followed by LSD test. The results showed that the use of cherry leaf extract (Muntingia calabura) in treating Trichodina sp parasite has a very real effect with the best value on the presentation of Leukocrit is 2% concentration that produces Leukocrit percentage of 2.68% and percentage of Hematocrit 2% with Hematocrit yield of 11.83%. The clinical symptoms are white spots in all body, pale color, decreased appetite of the mucus that comes out, often rubbing the body to the wall. The result of water quality measurement shows temperature: 24 - 27,2oC, DO: 4,1 - 6,9 and pH: 6 - 8.KEY WORDS: Muntingia calabura, Trichodiniasis, Sangkuriang Catfish, Leukocrit, Hematocrit.
EVALUATION FEASIBILITY AND BUSINESS DEVELOPMENT STRATEGY ENLARGEMENT WHITE SHRIMP (Litopenaeus Vannamei) AT DUKUHTUNGGAL VILLAGE GLAGAH SUB DISTRICT LAMONGAN Ika Maulana Lutfi; David Hermawan; Anis Zubaidah
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 1 No. 1 (2018): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v1i1.6077

Abstract

This research aims to analyze the financial feasibility and formulating business development strategies enlargement of White shrimp at Dukuhtunggal Village Sub district Glagah Lamongan. The research using survey method. The sampling method used snowball sampling by the number of respondents as many as 18 people. The result showed that the business of enlarging white shrimp enlargement enterprise development deserves to be implemented and developed, because of the results of the assessment in accordance with the investment criteria Net Present Value (NPV) reached Rp 283.927.334, Net Benefit Cost Ratio (Net/B/C) by 28, Internal Rate of Return (IRR) reached 645.5%, the value of payback period  of 0.37 or three months of seven days and the Profitability index (PI) of 1.53. Business development strategy is known through proceeds from the matrix IFE and EFE with a total score of 3.341 and 3.272. Matrix IE shows the position of the company located on the cell to one which means grow and build so that the appropriate strategy to be applied is the intensive strategy i.e., market penetration, market development, product development and integration strategies. The formulation of the strategy produces eight alternative development strategies i.e., an increase in production capacity, strengthening the institutional role, leveraging capital access, empowerment of farmers, increase the use of quality seeds, weaves cooperation with suppliers, maintaining the condition of the infrastructure, and improve the implementation and monitoring of standard operational procedures. Keywords: Litopenaeus vannamei, feasibility, strategy enlargement
Effectiveness of Strychnos ligustrina Bl. Extract as Feed Supplementation to Increase Immune System of Nile Tilapia (Oreochromis niloticus) wich againts Streptococcus agalactiae Anis Zubaidah; Kuny Riski Faidah; Sri Samsundari
IJOTA (Indonesian Journal of Tropical Aquatic) Vol. 1 No. 1 (2018): August
Publisher : Universitas Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/ijota.v1i1.6082

Abstract

One of the problems of intensive cultivation of tilapia is the attack of Streptococcosis disease caused by Streptococcus agalactiae bacteria. To prevent it is necessary to prevent the use of natural antibiotics that is Strychnine bush extract. The method used in this research is the experimental method using Completely Randomized Design (RAL), then the data is analyzed by using ANAVA. In this research, there were five treatments with various dosages, namely treatment (K: 0%), (A: 5%), (B: 10%), (C: 15%) and (D: 20%), each treatment was repeated four times. The main parameters used are hematocrit level, leukocrit level, leukocyte count and phagocytosis activity. As a supporting parameter is water quality and MIC (Minimum Inhibitation Concentration) test. The results showed that dosage of Strychnine bush extract did not affect the level of hematocrit and leukocrit level, but significant effect on leukocyte count with the highest value at treatment B with 10% dose is 11,9 × 105 cell / mm3. Giving extract also significant effect on phagocytosis activity with the highest phagocytosis value at treatment B with dose of 10% that is 32%.Keywords: Imune system, Streptococcosis, antibiotics, Minimum Inhibitation Concentration

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