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Omni-Akuatika
Published by Universitas Jenderal Soedirman
ISSN : 18583873     EISSN : 24769347     DOI : -
Core Subject : Science, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science
OmniAquatika is a scholarly refereed research journal which aims to promote the theory and practice, innovation, engineering and management as well as social-economic relevant in fisheries and marine sciences fields. The main aspects of research areas include, but are not exclusive to the current research on cells, organisms, populations, ecosystems, or processes that affect aquatic systems in the field of fisheries and marine science. The journal also welcome other aquatic relevant aspect related to the transport, fate, control of nutrients and abatement of pollutants in the aquatic environment as well as the ecosystem rehabilitation. The authors and readers are students, scientists, and regulatory experts from the academic, industrial, and government sectors worldwide. Master thesis and part of dissertation research work might becoming the potential contributors. High-quality, research articles make up the primary content. Other contributions are short communications, reviews, and special issues. Before contributions are accepted for publication, they must pass a peer-review process managed by the editor-in-chief.
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Articles 265 Documents
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Growth and Survival Rate of Tilapia (Oreochromis niloticus) Given Acanthaster planci Based Feed muhammad safir; Kasim Mansyur; Novalina Serdiati; Septina F Mangitung; Fachri Ramadhan Tamrin
Journal Omni-Akuatika Vol 18, No 1 (2022): Omni-Akuatika May
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.oa.2022.18.1.906

Abstract

Crown of thorns star (Acanthaster planci) is one of the aquatic organisms that contains protein and amino acids similar to fish meal, and has not been used properly for feed ingredients. This research was conducted to examine A planci flour as a feed ingredient on the growth of tilapia. The research method was a completely randomized design, consisting of 4 treatments with doses of A planci flour, 7 %, 14 %, 21 % and 0 % (control), given three replications. The results showed growth (daily growth rate and biomass increase) of 3.84 %, 3.81 %, 4.00 %, and 4.21 % per day, and 61.00 g, 49.33 g, 54.33 g, and 52.67 g. This growth did not show any difference between treatments (P>0.05). Feed consumption ranged from 129.20 g – 132.24 g (P>0.05). Feed conversion ratio and survival rates ranged from 2.13 – 2.75 and 94.44 % - 100.00 % (P>0.05). A. planci flour can be used up to 21 % as a source of protein for feed ingredients in minimizing fish meal as feed ingredients. 
Sound Productivity of Spiny Lobster Panulirus homarus (Linnaeus, 1758) due to Crude Oil Contamination Hartoyo Hartoyo; Amron Amron; Aristi Dian Purnama Fitri; YS Darmanto
Journal Omni-Akuatika Vol 18, No 1 (2022): Omni-Akuatika May
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.oa.2022.18.1.964

Abstract

Anthropogenic activities have the potential to put pressure on the marine environment. Crude oil was one of the pressure that give rise to any response of the aquatic organism, such as sound. This study aimed to analyze the sound productivity of spiny lobster Panulirus homarus (Linnaeus, 1758) in waters contaminated with crude oil. Observation of lobster sound was carried out on a laboratory scale using the passive acoustic method. A hydrophone and Closed Circuit Television (CCTV) camera coupled with a decoder and personal computer used to record the movements and sounds of P. homarus during the treatment of crude oil at concentrations 1; 5; 10 and 100 mgL-1. The result showed that crude oil contamination in water was impacted the sound productivity of P. homarus. In the low concentration of crude oil (1 - 5 mgL-1), P. homarus was responded with more sound produced. Afterwar, until concentration off 10 mgL-1, the response of P homarus showed different between individuals. In the 100 mgL-1 concentration, the sound productivity of all P. homarus was decreased. Based on this study, we concluded that the sound of P. homarus has the potential as an indicator of water pollution.Keywords: Panulirus houmarus, crude oil, fish sound
Production, Fishing Season and Fishing Ground of the Dominant Fish (Euthynnus affinis, Mene maculata, Leiognathus equulus) Caught by Boat Seine in Palabuhanratu Indonesia Mohammad Imron; Mulyono S Baskoro; Didin Komarudin
Journal Omni-Akuatika Vol 18, No 2 (2022): Omni-Akuatika November
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.oa.2022.18.2.922

Abstract

Boat Seine net is a very productive fishing gear in Nusantara Fisheries Port (NFP) Palabuhanratu. Boat Seine was a fishing unit that has the third largest contribution to the provision of fish stocks in 2019, which is 9% of the total production volume of NFP Palabuhanratu after lift net (40%) and longline (35%). The purpose of this study was to analyze the composition of the main catch, productivity, fishing season and to analyse the fishing ground in Palabuhanratu Bay. The type of data collected in this study was quantitative data. Primary data from interviews and field observations of fish landing activities at Palabuhanratu in October 2020 were used to compile this study's data, which included the type of fishing gear used, the composition of the types, and the production of the catch. Secondary data collected were monthly catches and trips made by Boat Seine fishing units. By analyzing the data of Boat Seine net fishing from 2015 to 2019, descriptive analysis method was used to investigate the composition of Boat Seine net catch. The results of the research showed that mackerel (Euthynnus affinis), moonfish (Mene maculata), and ponyfish (Leiognathus equulus) are the dominant fishes caught at the Palabuhanratu waters. The productivity level of Boat Seine net was 348 Kg/Trip in 2015, which increased to 603 Kg/Trip in 2019. The mackerel season occurs around May to September and November. Moonfish fishing season occurs in March, September and October. Ponyfish fishing season occurs in January, March, May, October, November, and December. Boat Seine net fishing grounds in the waters of Palabuhanratu Bay are relatively stationary around the waters of Palabuhanratu Bay.Keywords: CPUE, Fishing Area, Fishing Season Index, Productivity
Review: Nutritional Value and Health Benefit of Sea Urchin Diah Anggraini Wulandari; Mega Ferdina Warsito
Journal Omni-Akuatika Vol 18 (2022): Omni-Akuatika Special Issue 4th Kripik SCiFiMaS
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.oa.2022.18.S1.1012

Abstract

Varieties of sea urchins can be found in the Indonesian`s ocean. Empirically, Indonesian citizens have been used it as food and medicine. Research about sea urchins had been conducted to give scientific evidence for further usage.  This article will provide information about biological structure, nutritional value, and biological activities of sea urchins. The habitat and morphological structure will be described. Nutritional compound that had been identified from sea urchin are carbohydrate, essential amino acid, essential fatty acid, vitamin, carotenoid, mineral, and albumin. Sea urchin also contained some bioactive compound such as polysaccharides, sulphated polysaccharide, and fucoidan.  Traditionally, sea urchins have been used as antiinflammation, antimicrobial, antioxidant, anticancer, anti-fatigue, antidiabetic, and anti-allergic agent. Several biological activities that have been proved scientifically are antioxidant, anticancer, antimicrobial, antiinflammation and anti-haemolytic activity either from the extract or bioactive compound. Therefore it can be concluded that sea urchin have numerous potential bioactive compounds that can be developed into pharmaceutical  and/or nutraceutical product. Keywords: Sea urchin, morphology, nutrition, bioactivities, bioactive compound.
Blood Health Indicators Changes Induced by Replacing Fish meal with Lentil seed meal in the Common Carp (Cyprinus carpio L.) Bakhan Rafiq Hassan; Nasreen Mohialddin Abdulrahman; Vian Muhamad Ahmad; Zaweta Sharif Abdulla
Journal Omni-Akuatika Vol 18, No 2 (2022): Omni-Akuatika November
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.oa.2022.18.2.992

Abstract

According to the research, substituting a fish meal with a plant protein source in a fish diet presents several difficulties. As a result, the goal of this study was to evaluate the effects of substituting lentil seed meal meal for fish meal in the diet of Cyprinus carpio using a variety of blood health indices. Five different diets were created by replacing FM with 0 (control), 5, 10, 15, and 20% lentil seed meal meal. A total of 150 common carp with an initial weight of 103.8±0.5g are randomly distributed into 15 tanks for 70 days, at a rate of 3% live weight per day and two times each day. Blood samples were obtained from five fish in each tank at the end of the feeding trial to analyze hematological and biochemical parameters. Hematological and differential leukocyte counts showed no significant changes (p<0.05). Also, dietary treatments had no effect on serum glucose and total proteins (Albumin and Globulin). However, serum enzyme activity (alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase (ALP)), triglycerides, and total cholesterol were increased significantly (p<0.05) as the amount of lentil seed meal meal in the diet grew. According to the findings of this study, the maximum amounts of lentil seed meal replacement in Cyprinus carpio diets might be between 15 and 20% of total protein sources without causing adverse effects on hematological and certain plasma biochemical markers. ?Keywords: Biochemical, Common Carp, Hematology, Plant Protein
The Effect of Different Doses of Citronella Oil (Cymbopogon citratus) as Anesthetic for Prospective Tilapia Broodstock (Oreochromis niloticus) in Closed Transportation System Astarini Shabrina Aryanti; Dicky Harwanto; Tristiana Yuniarti
Journal Omni-Akuatika Vol 18, No 2 (2022): Omni-Akuatika November
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.oa.2022.18.2.987

Abstract

Anesthesia of fish with citronella oil in a closed transportation system has never been tested on prospective tilapia broodstock. The broodstocks transportation activities are to ensure survival and keep the reproductive stages undisturbed and safe to the destination. This study aims to determine the effect and the best dose on anesthesia with citronella oil for prospective tilapia broodstock in closed transportation systems. The research was conducted on 27 April – 4 May 2021 at Fish Seed Hall Potrobangsan, Magelang. The test material used citronella oil with a fish density of 10 fish/6 liters per bag. The experimental design used was a completely randomized design with five treatments and three replications with doses of citronella oil, namely A (0 mL/L as control); B (0,05 mL/L), C (0,10 mL/L); D (0,15 mL/L); and E (0,20 mL/L). Fish were transported for 13 hours with artificial simulation. Parameters observed were fish behavior during anesthesia, time to faint and recover, survival, water quality, blood glucose, blood profile (erythrocytes, leukocytes and hemoglobin), Hepatosomatic Index and Gonadosomatic Index. Behavior during anesthesia showed that the operculum slowed down, response weakened and swimming balance was lost. Different dose of citronella oil had a significant effect on survival, blood glucose, erythrocytes, and leukocytes, but had no significant effect on hemoglobin, Hepatosomatic Index (HSI) and Gonadosomatic Index (GSI). The best dose of citronella oil was 0.10 mL/L with an average survival of 93.33%.Keywords: anesthesia, citronella, tilapia, broodstock, transportation
Antioxidant activities from different parts of Sargassum polycystum thalli through ultrasound-assisted extraction (UAE) method I Ketut Sumandiarsa; Nurul Hamida; Joko Santoso; Kustiariyah Tarman
Journal Omni-Akuatika Vol 18, No 2 (2022): Omni-Akuatika November
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.oa.2022.18.2.907

Abstract

Sargassum polycystum is well known as macroalgae that contain active compounds with great function as antioxidants. The antioxidants content of the seaweed has links closely to phenolic compounds. The study is aimed to determine active compound quality from different thalli parts of S. polycystum extracted by Ultra-sound-assisted extraction (UAE). Fresh samples were prepared into three parts, which are apical, middle, and base thallus. Extraction was carried out by ultrasonication method and using 90% acetone as solvent. Levels of total phenols were analyzed using the Reagent Folin-Ciocalteu. Antioxidant activities were analyzed using DPPH, FRAP, and CUPRAC methods. The highest total phenolic content was found at the apical of the thallus, about 875.64 mg GAE/g. The most excellent DPPH antioxidant activities in S. polycystum were found from the apical part of the thallus with an IC 50 value of 38.49 ppm. The FRAP and CUPRAC antioxidant’s capacity showed the highest in the apical part of the thallus, which was 989.93 mol Fe (II)/g and 555.52 µmol Trolox/g, respectively. The extraction results of different parts of the thallus show highly potent active compounds of alkaloids, steroids, phenols, flavonoids, and potent antioxidants activity.Keywords: antioxidants, phytochemical, ultrasonication, S. polycystum 
Germ Cells and Gonadal Development in a Teleost, Osteochilus vittatus (Valenciennes, 1842) Exposed to Potassium Dichromate Sharon Hillary; Hernayanti Hernayanti; Gratiana Ekaningsih Wijayanti
Journal Omni-Akuatika Vol 18, No 2 (2022): Omni-Akuatika November
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.oa.2022.18.2.999

Abstract

Potassium dichromate, K2Cr2O7, is a well-known heavy metal, commonly used as an oxidizing and tanning agent in industrial applications. Prolonged or repeated exposure of hexavalent chromium is deemed very toxic for aquatic biota, with long lasting effect. This substance induce damage to DNA and tissue structures, as well as disruption of survival and growth rate. The present research exposed Osteochilus vittatus in larval and juvenile stages, to varying concentration of K2Cr2O7. This experiment was aimed to evaluate the effect of chromium on primordial germ cells (PGCs) and subsequently, to the subject gonadal development. The evaluation was based on paraffin-embedded section, stained with Haematoxylin-Eosin. K2Cr2O7 of 2.5 and 5 ppm were applied to four crucial developmental stages; post-hatching larvae, 1-month, 2-months, and 3-months juvenile, for 30 days. There was a consistent pattern in all test subject, in which higher concentration of K2Cr2O7 resulted in lower PGCs number and delayed gonadal appearance. Our results suggested that sublethal Cr exposure to larval stage potentially decrease PGCs and thus, hinder the formation of gonad. Regulation of Cr-containing waste disposal should be issued in near future, to prevent further damage on local freshwater fish.Keywords: Chromium, Cyprinids, Juvenile, Larvae, PGC
The Condition of Acidity, Phosphate, And Nitrate in Indonesian Waters Faeza A. Valdany; Yudi N Ihsan; Lintang PS Yuliadi; Noir P Purba
Journal Omni-Akuatika Vol 18, No 2 (2022): Omni-Akuatika November
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.oa.2022.18.2.912

Abstract

This research aimed to observe the trend of acidity, nitrate, and phosphate in the Indonesia seas associated with oceanography. Analysis was done by looking at the horizontal condition from main data (acidity, nitrate, and phosphate) and ancillary data (temperature) seasonally in three-layer of depths (0 m, 50 m, and 100 m) for years 2015 using data model of INDESO. The result showed that pattern of acidity, nitrate, and phosphate vary every season. In the upper layer (up to 100 meters), acidity condition ranges from 7.5 to 8, nitrate around 0.01 – 15 mmol N m-3, and phosphate around 0.001 – 1.6 mmol P m-3. The value of acidity is getting lower with depth whereas the nitrate and phosphate values increased with depth. The change in acidity, nitrates and phosphate every season indicates that the monsoon also influences the spread of pH, nitrate and phosphate.Keywords: ocean currents, Indonesia throughflow, sea surface temperature, climate changehate. 
Susceptibility of three indigenous Indonesian fish species: mahseer (Tor soro), snakehead (Channa striata), and bagrid catfish (Hemibagrus nemurus) against parasites infection Tuti Sumiati; Taukhid Taukhid; Septiyan Andriyanto; Edy Farid Wadjdy
Journal Omni-Akuatika Vol 18, No 2 (2022): Omni-Akuatika November
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.oa.2022.18.2.1000

Abstract

Abstract Mahseer "dewa" (Tor soro), snakehead "gabus" (Channa striata), and bagrid catfish "baung" (Hemibagrus nemurus) are local specific fish species that are promising to be developed as freshwater aquaculture commodities in Indonesia. Disease cases/outbreaks in those fish farming have often been reported, however, there is not much information on the epizootiology and disease status of those fish species. The susceptibility of those fish to parasitic infection was evaluated by natural and artificial infection. Natural infection was conducted by randomly sampling 20 fish at 5-day intervals and lasting for 30 days. In artificial infection, 150 tested fish cohabited with 40 parasite-carrying fish that were known to be definitely infected by the parasite. The observation was carried out by sampling 20 fish at 5-day intervals and lasting for 30 days. The results showed that the three fish species were susceptible to infection with Trichodina spp, Epistylis spp, Tetrahymena spp, Ichtyophthirius multifiliis, Dactylogyrus spp, and Gyrodactylus spp, while the helminth parasite Pallisentis nagpurensis (Acanthocephala) was only identified in snakehead. A number of parasites such as I. multifiliis, Dactylogyrus spp., and Gyrodactylus spp. are likely to be potential obstacles in the cultivation of those fish species, especially in hatcheries and nurseries. Keywords: mahseer, snakehead, bagrid catfish, parasites

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