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Omni-Akuatika

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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 12 Documents

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Search results for , issue "Vol 15, No 1 (2019): Omni-Akuatika May" : 12 Documents clear

Sex Ratio and Growth Pattern of Coconut Crabs Birgus latro (Crustacea, Decapoda, Cianobitidae) in North Moluccas Province, Indonesia Rugaya Serosero; Sulistiono Sulistiono; Nurlisa A. Butet; Etty Riani
Journal Omni-Akuatika Vol 15, No 1 (2019): Omni-Akuatika May
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Coconut crab (Birgus latro) is a crustacean that has a large size until four kilograms. The study aimed to analyze sex ratio and growth pattern including the relationship of thorax length - body weight, thorax width - body weight and cephalothorax length plus rostrum - body weight in Daeo (Morotai Island), Laigoma (South Halmahera District) and Fitako (North Halmahera District). The sex ratio was determined using χ2 test and the growth pattern was tested by the b value through t test. The results showed sex ratio of 1: 0.9 in Daeo (n = 581), 1: 0.6 in Laigoma (n = 24), and 1: 2 in Fitako (n = 31). The relationship of thorax length, thorax width and cephalothorax length plus rostrum with body weight were strongly correlated (R2> 70%). The growth pattern of coconut crab in Daeo was negative allometric, while in Laigoma and Fitako were negative allometric and isometric.

Age, Growth and Mortality of the Common Carp (Cyprinus carpio) Population in Merdja Sidi Abed Dam, Algeria. BENSAHLA TALET Lotfi; Ahmed BENSAHLA TALET
Journal Omni-Akuatika Vol 15, No 1 (2019): Omni-Akuatika May
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

We tried to estimate age, growth parameters, condition factor, length-weight relationship and mortality rates (Z, M, and F) of the common carp in Merdja Sidi Abed dam. Cyprinus carpio specimens were captured by long line between April and June 2013 in Merdjea Sidi abed. 220 individuals were collected and weights ranged between 265.5 and 620.3 g while the total length ranged between 26.3 and 35.6 cm. Length-converted catch curve was used to estimate total annual instantaneous mortality rates (Z), natural mortality was calculated using Pauly formula [ln(M) = -0.0152 - 0.279 ln(L∞) + 0.6543 ln(K) + 0.463 ln(T)]. Recruitment patterns were determined from the routine implemented in FISAT II. For all individuals (n = 220) of the common carp, the relationship between total length and body weight was: W = 0.0384 L2.70 (r2 = 0.906) for females and W = 0.0467 L2.653(r2 = 0.976) for males a minor allometry was found for this species, mean condition factor K was estimated at 1.41. The maximum value of recruitment was recorded in March-April period with 19.56 and 15.20 % respectively. The Battacharya method was used to estimate age of individuals that was comprised between 1 and years 3. The equation of Von Bertalanffy growth was: L = 36.75 [1-e-0.46 (t + 0.33)] for all the population. Total mortality (Z), natural mortality (M) and fishing mortality (F) were as follows: Z = 1.08, M = 0.82, F = 0.26 yr-1while exploitation ratio (E) was evaluated at 0.24 indicating an under exploitation of this local resource.

Plankton Diversity in Karst River, Masigit - Pawon Cave, West Java, Indonesia Muhammad Wahyudin Lewaru; Fifi Dwi Pratiwi; Sunardi Sunardi
Journal Omni-Akuatika Vol 15, No 1 (2019): Omni-Akuatika May
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Karst Citatah region has been known strategies economic value of biotic and a biotic resources. This study investigated plankton biodiversity potency on Cibukur and Cibodas rivers where it already made in Karst Citatah region, particularly on Masigit-Pawon. The result of four stations showed that Karst Masigit-Pawon region was high potency with Plankton biodiversity resources with Diversity and dominancy index almost 1. The numbers of Plankton identified were of 24 species of phytoplankton consist of 9 class and 16 species of zooplankton consists of 6 filum. The high abundance of Plankton was Navicula sp(5.280 species), Synedra sp(4.092 species), dan Cyclops sp(2.904 species) respectively.

Antibacterial Activity of Haslea ostrearia Supernatant Adapted in Indonesia against Pathogenic Bacteria Relevant to Mariculture (In-Vitro Study) Ikfa Permatasari; Fiddy Semba Prasetiya; Sulastri Arsad; Mochamad Untung Kurnia Agung; Jean-Luc Mouget
Journal Omni-Akuatika Vol 15, No 1 (2019): Omni-Akuatika May
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Haslea ostrearia has known as the only diatom which synthesizes a water-soluble blue pigment, marennine. It has some biological activities such as allelopathy, antioxidant, antibacterial, antiviral, and growth inhibitor. Marennine is available in two forms, intracellular which located in the apical of the cell and extracellular which released into the culture medium. This research aimed to test the bioactivity of Haslea ostrearia supernatant adapted in Indonesia as an antibacterial against pathogenic bacteria relevant to marine culture using in-vitro study. This research was using an explorative method, data analysed statistically and descriptive-comparatively observed. Observation parameters were the inhibitory zone of antibacterial activity, absorbance value of MIC test, and bacterial growth qualitatively from MBC test. Marennine concentration in the supernatant of Haslea ostrearia adapted in Indonesia is about 3.74 mg. L-1. The highest concentration supernatant of Haslea ostrearia that shown antibacterial activity is 3.5 mg. L-1 with inhibitory zone diameter is about 6.87 mm for Staphylococcus aureus and 7.14 mm for Vibrio harveyi, correspondingly. The minimum concentration that inhibits the growth of Staphylococcus aureus is 0.03 mg. L-1, while for Vibrio harveyi is 0.06 mg. L-1. Antibacterial activity of supernatant Haslea ostrearia originally adapted in Indonesia classified into bacteriostatic

Milkfish (Chanos chanos Forskal) Traditional Pond Stability Based On Water Quality Analyses And Periphyton Availability Sulastri Arsad; Luthfiana Aprilianita Sari; Muhammad Zainuddin; Muhammad Musa
Journal Omni-Akuatika Vol 15, No 1 (2019): Omni-Akuatika May
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Milkfish is potential fish with high production and belong to ten of fish commodities culture in Indonesia. Pond stability of milkfish especially in fingerling phase (young phase) influenced by several factors including water quality and organism availability (periphyton). This recent study aimed to assess the milkfish traditional pond stability in fingerling phase based on water quality and periphyton availability aspects. These aspects are quite important to milkfish production and their growth as well as their food habit. The research was conducted in traditional pond located in UPT Fisheries Brackish and Saline Water Probolinggo for three months. Water quality and periphyton analyses were in situ and ex situ. The result shows that all the water quality is belong to good condition (stable) except in ammonia, TOM, and orthophosphate. However, this fluctuated value is not significantly impacting to the living organisms (milkfish). The research concluded that the fingerling milkfish traditional pond is belonging to moderate to stable condition.

Length-Weight Relationship, Growth Patterns and Sex Ratio of Dog Conch Strombus Canarium Linnaeus, 1758 in the Waters of Kota Batam Ramses Ramses; Fauziah Syamsi; Notowinarto Notowinarto
Journal Omni-Akuatika Vol 15, No 1 (2019): Omni-Akuatika May
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

This study aims to analyze the aspect length of weight relationship, growth pattern, and sex ratio of Dog conch. This research was conducted in May-August 2018. The samples were collected from three locations (stations) which became the main of catching the Dog conch in Kota Batam, namely, Jaloh Island, Kangkung Bay, and Terong Island. A total of 377 individuals (162 males and 215 females) S. canarium were collected from three research stations. The value of the length-weight relationship for females, males, dan blended, at the respective station, are Jaloh Island, W=0,000142L2,924, R²= 0.555 (female), W=0,00049L2,610, R²= 0.566 (male), and W=0,000165L2,881, with a value of R²= 0.572 (blanded); Kangkung Bay, W=0,0850L1,275, R²= 0.325 (female), 0,00000511L3,185, R²= 0.776 (male), and W=0,0384L1,480, with R² = 0.374 (blended); As well as Terong Island, W=1,227L0,746, R²= 0.180 (female), W=0,00139L2,385, R²= 0.714 (male) and W=0,118L1,305 with R²= 0.355 (blended). The pattern of growth of Dog conch is negative allometric (b<3) where long growth is faster than weight gain, except male Dog conch in Kangkung Bay, has a coefficient (b>3) has a positive allometric growth pattern, where weight gain is faster than long increments. The sex ratio of Dog conch on Jaloh Island and Terong Island is balanced, while in Kangkung Bay it is not balanced. Overall the sex ratio in the study location is not balanced with a ratio of 1: 1.33 with the expectation frequency (Ei) of 188.8.

Analysis of Heavy Metal Cadmium (Cd) Content on Mud Crab (Scylla sp.) at Wonorejo River Surabaya Nanang Ardianto; Prayogo Prayogo; Adriana Monica Sahidu
Journal Omni-Akuatika Vol 15, No 1 (2019): Omni-Akuatika May
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

The coastal waters of Wonorejo is part of the East Coast Surabaya which receive the brunt of watersheds (DAS) from other rivers. The main source of heavy metal wastes in the River on the downstream Wonorejo pass several industries suspected of disposing of hazardous waste. One of the main heavy metal which is a toxic element and effect on aquatic ecological systems are cadmium (Cd).Mud crab is one potential biota found in the mangrove area of Wonorejo River Surabaya can accumulate heavy metals. This research was carried out in April 2018 with sampling at three stations with time each week for three times.Analysis of heavy metals cadmium (Cd) in mud crabs (Scylla sp.), water and sediments carried out in the laboratory of nutrition of the Faculty of public health University Airlangga. Research method using observation which is channeled in the waters and farmed in Wonorejo Surabaya. Mud crab meat samples, water and sediments tested using Atomic Absoption Spectrophotometry (AAS). The results of the test concentration of heavy metals cadmium (Cd) in mud crab meat on the river Wonorejo i.e. 0.032 mg.kg-1 where the value of these levels are still below the threshold of quality raw heavy metal Cd on crustaceans i.e. 1 mg.kg-1 (SNI 7387:2009). The Cd content in water of Wonorejo river in between 0.014-0.02 ppm and on sediments between 0.234-0.416 mg/kg. Correlation of cadmium content in water with crab meat in the correlation coefficient shows of Wonorejo -0.22 (a weak correlation, a negative direction). Then, the correlation of the content of cadmium in sediments with crab meat in the correlation coefficient shows of Wonorejo 0.285 (of correlation is weak, the positive direction).

Monofilament Gillnet Selectivity for Hampala Barb (Hampala macrolepidota) Management at Ir. H. Djuanda Reservoir-West Java Andri Warsa; LIsmining Pujiyani Astuti
Journal Omni-Akuatika Vol 15, No 1 (2019): Omni-Akuatika May
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Ir. H. Djuanda Reservoir have high fishes biodiversity and one of them is Hampala barb (Hampala macrolepidota) and it’s economical species. Hampala barb is one of dominant species was captured at Ir. H. Djuanda Reservoir but was experience decreasing of population by overfishing. The objective of this research were to known gillnet selectivity and length at first mature for hampala barb (Hampala macrolepidota) at Ir. H. Djuanda Reservoir. The information will be used as base determination of gillnet mesh size and legal size for sustainability fisheries management. The research was done at February-September 2017 with experimental fishing used gillnet with mesh size between 1.0-3.0 inch with intervals 0.5 inch. Total length hampala barb with highest captured probability for gillnet with mesh size 1.0; 1.5; 2.0; 2.5 and 3.0 inch were 11.0; 17.0; 22.5; 28,0 and 33.5 cm respectively. Length at first mature of hampala barb for female and male were 14.2 and 13.8 cm respectively. Based on the information, the minimum total length for exploitation was 19 cm using gillnet with mesh size > 2.0 inch.

Fish Aggregation Pattern on Red-Blue-Green Light Emitting Diode (RGB-LED) Light in Static Lift Net Sugandi Sugandi; Ronny Irawan Wahju; Mochammad Riyanto; sumardi sumardi
Journal Omni-Akuatika Vol 15, No 1 (2019): Omni-Akuatika May
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

The Red-Blue-Green Light Emitting Diode (RGB-LED) light used in the static lift net can manipulate fish behavior to attract, approach and be concentrated in the lighting area. The purpose of this study is to determine the use of the RGB-LED light intensity with pulse width modulation PWM) value for gathering fish and changing patterns of schooling fish’s movement. Seven treatments with changes in PWM values were the initial conditions, 250, 195, 145, 95 20 and 5 PWM. The methods were by using Hydro-acoustic sonar 360o and ImageJ analysis used to determine the schooling fish’s area in horizontal and vertical by dividing the center zone, main zone, influence zone, and shadow zone. Results of the visualization image of schooling fish as the target fish group visualized by horizontally and vertically. It has the longest duration of 90 ' and 250 PWM has a time duration of 10' shows the difference in the area of schooling fish in four zones. 195, 145 and 95 PWM with each time duration of 10' dominant schooling fish were in the main zone and influence zone, the lowest two light intensities of PWM values were 5 and 20, there are three zones namely center zone, main zone, and shadow zone, schooling fish were increasing with movement pattern by revolving the light source at shadow zone. The approached fish were forming schooling fish because they were attracted to light, with changes in the PWM value that can model the movement patterns of schooling fish.

Production Performance of Gracilaria verrucosa using Verticulture Method with Various Wide Planting Area in Karimunjawa Titik Susilowati; Agus Nadlir; Alfabetian Harjuno Condro Haditomo; Seto Windarto; Dicky Harwanto; Kurnia Adi
Journal Omni-Akuatika Vol 15, No 1 (2019): Omni-Akuatika May
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Gracilaria verrucosa is one type of seaweed that can be developed into a high-value product. Market demand for agar reaches 21.8% per year, but only 13.1% can be met. This is due to the low level of production of G. verrucosa in Indonesia. Utilization of G. verrucosa is still relying on aquaculture from the farm, which causes low production. Cultivation of seaweed with verticulture methods can increase the production of G. verrucosa. Karimunjawa is a potential area for seaweed cultivation. The aim of this study is to determine the effect of different density areas on the growth and production of G. Verrucosa and to determine the best density area for its production in Karimunjawa. This research used G. verrucosa wrapped in a mesh size of 0.5cm with a weight of 50g per pack. Each verticulture strap contains 4 packs and each treatment consists of 9 straps. The treatment was in the form of differences in the planting area of 25x25cm2 (A), 50x50cm2 (B) and 75x75cm2 (C). The results showed significant differences (P <0.01) between each treatment. The 75x75cm2 area has the best yield on absolute growth, relative growth rate (RGR) and specific growth rate (SGR) of 83.10 ± 4.12g; 3.96 ± 0.20% / day and 2.33 ± 0.07% / day. The best results of G. verrucosa production obtained at an area of 50x50cm2 (5.32 ± 0.26 kg / m2).

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Kampus Perikanan dan Ilmu Kelautan Universitas Jenderal Soedirman Jl. Dr. Soeparno, Karang Wangkal, Purwokerto 53122

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Kab. banyumas,

Jawa tengah

INDONESIA