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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.
Arjuna Subject : -
Articles 286 Documents
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Marine Litter and Grading of the Coastal Areas of Ambon Bay, Indonesia Corry Yanti Manullang; Wempi Barends; Dominggus Polnaya; Ahmad Soamole; Irwan Rehalat
Journal Omni-Akuatika Vol 17, No 2 (2021): 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.2021.17.1.903

Abstract

The coastal is frequently impacted by marine litter that damages marine wildlife and causes economic loss to fishing and maritime industries. In this study, we described the quantity of marine litter in the inner and outer of Ambon Bay. The Sampling was carried out in September 2017. The beach litter sampling was handled by the line transect method combined with the quadrant method in 8 sites; the observation of floating litter was conducted manually with boat sampling and visual observation in a seven-line trajectory. About 2359 items of coastal litter were found in seven sites in Ambon Bay with a mean density of 18.87 items.m -2. These beach litter belonging to five categories were counted (plastic, glass, metal, cloth, paper). The highest abundance of beach litter was found in the inner Ambon Bay with a mean density of 68.74 items per m2. Plastic was the most abundant beach litter observed. Based on Clean Coast Index (CCI) evaluation, all coastal sites in Ambon Bay were identified as Very Dirty, that is most of the coastal is covered with litter. The highest floating litter was found near the market. The abundance and distribution of litter through Ambon Bay seem to be influenced by the local human population, anthropogenic activities, and seawater circulation in inner and outer Ambon Bay.
EVALUASI PERTUMBUHAN RUMPUT LAUT (EUCHEUMA COTTONII) PADA BUDIDAYA METODE LONG LINE DI PERAIRAN PANTAIKABUPATEN BANGGAI KEPULAUAN Tasruddin Tasruddin
Journal Omni-Akuatika Vol 11, No 2 (2015): 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.2015.11.2.961

Abstract

Seaweed (Eucheuma cottonii) is one type of fishery commodities with high economic value. These commodities have been developed in several areas in Indonesia, one of them is in the Banggai Islands, Central Sulawesi. Problems in the development of commodity seaweed in Banggai is a lack of understanding and seriousness in seaweed cultivation, lack of variety in designing seaweed cultivation techniques as well as the suitability of the location of aquaculture that can support increased productivity. The use of long-line method is considered still the best way. This study aimed to evaluate the seaweed cultivation methods long line in the village of Liang and Apal, Banggai Islands, Central Sulawesi. The results showed that the seaweed growth rate were not significantly different when we compared them based on sediment types. For instance, Liang village sediment was sandy silt while we found rocky substrate at Apal village. Therefore it can be concluded that long line method can be applied without taking into account the type of sediment. Keywords: sea weed, long-line methods, Banggai archipelago
Effects of Rotifer Feeding Frequency on Growth and Survival Rate of Early Larval Stages of Mud Crab, Scylla olivacea Chrisoetanto P. Pattirane; Bethsy J. Pattiasina; Frederik Dony Sangkia
Journal Omni-Akuatika Vol 17, No 2 (2021): 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.2021.17.2.915

Abstract

Crustacean larvae have the characteristics of living as carnivorous organisms. This has an impact on the length of gut evacuation time which affects the feeding pattern of the larvae. The feeding strategy of mud crab larvae is modulated by the length of gut evacuation time. Another factor that can be subject to modulation is the frequency of feeding. This research aimed to evaluate rotifer frequency feeding of early larvae stages of mud crab, Scylla olivacea. This research was conducted at the Mariculture Fisheries Center, Ambon with an indoor system. This research began with carrying out parental maintenance to produce larvae. Larvae are fed with rotifers with different frequencies. The treatments were the frequency of feeding rotifers, namely: Treatment 1 (F1) was the frequency of 1x a day (9:00 am); Treatment 2 (F2) was a frequency of 2x a day (9:00 am & 13:00 pm) and Treatment 3 (F3) was a frequency of 3x a day (9:00am, 13:00pm & 17:00pm). Each treatment was given 3 replications. Based on the results of this study, it showed that feeding with a frequency of three times a day (F3 treatment) was able to have a positive effect on the survival rate of zoea larvae which on the third day was 58% and the fourth day was 22% higher than the F1 and F2 treatments. The growth of larvae showed that F3 treatment was higher than F1 and F2 on the sixth day with an increase in the absolute value of growth of 0.12044 mm compared to F1 of 0.05531 mm and F2 of 0.03253 mm. Keywords: frequency of feeding, growth, larvae, survival rate, mud crab
ANALISIS KUALITAS AIR DAN TEKSTUR SEDIMEN PADA DAERAH TERSEDIMENTASI DI LAGUNA SEGARA ANAKAN CILACAP Lilik Kartika Sari; Luky Adrianto; Kadarwan Soewardi; Agus S Atmadipoera; Endang Hilmi
Journal Omni-Akuatika Vol 11, No 2 (2015): 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.2015.11.2.962

Abstract

This paper provides an overview of the environmental quality of areas affected by sedimentation on a lagoon. Observations made on water conditions as well as the texture of sedimennya. The observed water quality parameters is salinity, pH, NO3-N, PO4-P, COD and BOD. The observation is performed also on sediment texture on the 6 stations that represents the condition of the lagoon. The addition of LANDSAT Imagery based on land area in the province of Laguna Segara Saplings in two decades is of 823,9 ha per year.Keywords : sedimentation, the quality of the environment
PENDUGAAN HOTSPOT TUNA SIRIP KUNING (Thunnus albacares) DI PERAIRAN SELATAN JAWA BARAT Syawaludin A. Harahap; Mega L. Syamsuddin; Noir P. Purba
Journal Omni-Akuatika Vol 11, No 2 (2015): 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.2015.11.2.958

Abstract

Penelitian ini dilakukan untuk memprakirakan hotspot penangkapan ikan tuna sirip kuning dengan wilayah studi di perairan selatan Jawa Barat. Metode yang digunakan dalam penelitian ini adalah metode observasi dengan teknik penginderaan jauh menggunakan data citra satelit berupa suhu permukaan laut (SST), konsentrasi klorofil dan anomali tinggi permukaan laut (SSHA). Hasil penelitian menunjukkan bahwa puncak musim penangkapan ikan berada pada musim timur (Juli) pada posisi geografis 07 o 48'-08 o 56' LS dan 106 o 12'-108 o 46' E. Girasi optimum parameter oseanografi untuk penangkapan ikan tuna sirip kuning adalah: SST 24-25 o C, konsentrasi klorofil-a 1-1,5 mg/m 3 dan SSHA 0-50 cm.Kata Kunci : Penginderaan Jauh, Hotspot, Tuna Sirip Kuning dan Jawa Barat Bagian Selatan
DISTRIBUSI LOGAM BERAT PADA AIR DAN SEDIMEN LAUT DI WILAYAH PESISIR KABUPATEN SUMBAWA BARAT Helmy Akbar; Ario Damar; Mohammad Mukhlis Kamal; Kadarwan Soewardi; Singgih Afifa Putra
Journal Omni-Akuatika Vol 11, No 2 (2015): 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.2015.11.2.959

Abstract

Mineral mining (i.e. gold) activities in the land and coastal boundaries of West Sumbawa district are expected to increase the content of heavy metals in the marine and coastal waters surrounding. A residual of mining processing produce heavy metals disposal. In this study, the distributions of heavy metals (i.e. Hg, Cr6+, Cu, As, Ni, Zn, Pb, and Cd) were measured in the water column and bed sediments of coastal waters of West Sumbawa. This study was conducted during dry season in July 2011. The results showed the heavy metal concentrations in water column were below the threshold level stipulated by the Minister Decree No. 51/2004, except for Cu. The heavy metal contents in bed sediment were low and varied among sampling points excepting for Cu content which was remarkably high (101,7 mg/Kg).
Morphometric Characteristic and Growth Responses of Enhalus acoroides Seedlings Under Different Substrate Composition Treatment Aditya Hikmat Nugraha; Said Almahdi; Aminatul Zahra; Ita Karlina
Journal Omni-Akuatika Vol 17, No 2 (2021): 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.2021.17.2.883

Abstract

Seagrass transplantation in the large-scale requires a large number of seagrass individu from donor ecosystem. This may give negative impact as damage and reducing the number of seagrass in donor ecosystem. One of methods to overcome this case is by developing transplants using seagrass nut as source for seed. Substrate is one of factors that influence the growth of seagrass. The aim of this study was to compare the effect of differences in substrate composition on morphologi and growth of Enhalus acoroides seeds. Observations were carried out by treatment using mud, sand and mixed substrates sand with mud. The survival rate of Enhalus acoroides seeds was quite high of 100% but it had a lower value of 93.30% on sand substrate. The longest leaf is on the mud substrate with a length of 5.9 cm, the leaf width has the same size in each substrate with a value of 0.4 cm, the highest number of leaves were found in the sand and mixture substrate with 5 strands, the longest root size was in the mixed substrate with a length of 5 cm. The growth of Enhalus acoroides seagrass seeds did not show any significant difference. The highest growth was found in the mud substrate with a value of 0.10 cm/day. Keywords: Enhalus acoroides, seagrass,seed, substrate, transplantation
OBSERVASI ELEVASI MUKA AIR PERAIRAN SLEKO CILACAP MENGGUNAKAN STASIUN PASANG SURUT BERBASIS GPRS Mukti Trenggono; Hartoyo Hartoyo; Adi Wirawan3
Journal Omni-Akuatika Vol 11, No 2 (2015): 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.2015.11.2.960

Abstract

Current observation of water level in the Sleko waters used single-point time series by applying differential pressure level sensor accompanied by data logger. Data were taken periodically at intervals of five minutes. The telemetry system utilized the facilities of General Packet Radio Service (GPRS) in order to transmit the data and receive by a receiver on a server. The data in the server processed using PHP and MySQL applications to be displayed in graphs and numbers on the browser that can be accessed by the user. The results showed the percentage of realization data to the target was 93.45% due to of the signal from Base Transceiver Station. The average of the sea surface level during March to August was 96.11 cm. Accordingly, the tidal type in Sleko waters is mixed mainly semidiurnal tides.
The Effect of Dietary Chromium on Growth and Survival Rate of Tilapia (Oreochromis niloticus) Yuliana Yuliana; Subandiyono Subandiyono; Sri Hastuti
Journal Omni-Akuatika Vol 17, No 2 (2021): 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.2021.17.2.758

Abstract

Tilapia (Oreochromis niloticus) is a freshwater fish commodity in Indonesia. The next problem in aquaculture activities is the low utilization of carbohydrates which causes the role of protein to be reduced. The effort can be done is by adding chromium to feed. Research was conducted on May - July 2019 at Hathcery Fish Center, Siwarak, Central Java. The fish was used for observation have an average weight of 5,97±0,28. The rearing of Tilapia for 42 days using a plastic tub of 1 tail / idensity of 200 fish. The feeding is given twice a day at 08.00 and 16.00 WIB. This trial used an experimental method and a completely randomized design (RAL) with 4 treatments and 5 replications. The treatments were given dose A (2mgCr+3/kg of feed), B (4mgCr+3/kgof  feed), C (6mgCr+3/kg of feed) and D (8mgCr+3/kg of feed). Data observed included the level of feed consumption (TKP), feed utilization efficiency (EPP), protein efficiency ratio (PER), protein digestibility, growth rate (RGR) and survival rate. The results showed that chromium had a significant effect (P<0,05) on  TKP, EPP, PER, protein digestibility and RGR. Has but no significant effect (P>0,05) on survival. The highgest TKP results in treatment B were 161,66±0,82 g, while the highgest value of EPP PER, protein digestibility, RGR was 34,51±1,25%/day, 1,18±0,04%, 99,89%, 2,15±0,08%. The optimum dose of chromium addition in growth is 3,49 mg/kg. Showed the optimum result during observation.
Growth Characteristics and Condition Factors Of Red Snapper (Lutjanus campechanus) Landed at PPI Cikidang Pangandaran West Java Vika Nurlita; Dyahruri Sanjayasari
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.S1.985

Abstract

Pangandaran waters is one of productive fishing ground for Indonesian fisheries. One of potential catch in this area is red snapper. Red snapper (Lutjanus campechanus) is a type of demersal fish. This species can live in shallow waters to deep seas. Growth measurement is carried out as an anticipation on the presence of overfishing which causes red snapper stocks to decline. Hence, current field work focused on the growth characteristics and factor conditions of red snapper which landed in PPI Cikidang Pangandaran west Java. Present study may provide information related on fish species production. The survey and observation methods were used to collect the data in February 2021. The sampling location was carried out at the PPI Cikidang, Pangandaran. The data of weight and length of red snapper landed at PPI Cikidang were recorded and analyzed descriptively. The results revealed that growth of red snapper landed at the PPI Cikidang was categorized as negative allometric with b < 3, at 1.92. The condition factor has an average of 1.29 which means that the fish are classified as fat or not flat. Keywords: Growth Characteristics; Condition Factor; Red Snapper; Lutjanus campechanus; PPI Cikidang.

Page 22 of 29 | Total Record : 286

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