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Contact Name
Dietriech G. Bengen
Contact Email
dieter@indo.net.id
Phone
+62251-8627323
Journal Mail Official
dieter@indo.net.id
Editorial Address
Departement of Marine Science and Technology Faculty of fisheries and marine science, IPB University Jln. Lingkar Akademik, Kampus IPB Darmaga, Bogor 16680, Indonesia
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Kota bogor,
Jawa barat
INDONESIA
Jurnal Ilmu dan Teknologi Kelautan Tropis
ISSN : 20879423     EISSN : 2620309X     DOI : https://doi.org/10.29244/jitkt
Core Subject : Science,
Aims and Scope Journal of Tropical Marine Science and Technology (Jurnal Ilmu dan Teknologi Kelautan Tropis) is a scientific journal in the field of tropical marine science and technology. We have a aims and scope to focus in publishing a good quality scientific articles for dissemination of research results in the field of marine science and technology. Aims As an media of information and dissemination of research results in the field of marine science and technology, especially in the waters of Indonesia and Southeast Asia region, Could actively and continuously disseminate the best research results to various stakeholders, and; This Journal of Tropical Marine Science and Technology can improve the quality of research results and benefit stakeholders. Scope The article, published in this Journal of Tropical Marine Science and Technology covers a wide range of research topics in the field of: marine biology, marine ecology, biological oceanography, chemical oceanography, physical oceanography, dynamical oceanography, coral reef ecology, marine acoustic, marine remote sensing, marine geographical information system, marine microbiology, marine polution, marine aquaculture, post-harvest fisheries technology, integrated coastal management (ICM) marine biotechnology, air-sea interaction, ocean engineering,
Arjuna Subject : Umum - Umum
Articles 656 Documents
ZOOPLANKTON COMMUNITY IN LAMALERA SEA AND SAWU SEA, EAST NUSA TENGGARA Nurul Fitriya; Muhammad Lukman
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 5 No. 1 (2013): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (182.161 KB) | DOI: 10.29244/jitkt.v5i1.7770

Abstract

Zooplankton community was studied in Lamalera Sea and Sawu Sea during DIKTI-P2O LIPI Expedition from 19 – 30 July 2011. Besides being a potential fishing ground, the Lamalera sea and Sawu Sea have been a migration path for Cetacean (large marine mammals), particularly during the southeast monsoon season. The purposes of this study were to investigate community structure, abundance, and spatial distribution of zooplankton in the Lamalera Sea and the Sawu Sea.  Plankton samples were collected from 23 stations, by NORPAC 300 µm-net that was vertically hauled from maximum 200 meter depth up to the surface water. The result showed that there were 45 taxa of zooplankton, which was dominated by copepods . The abundance of the zooplankton between 491 - 4537 individu/m3. Average diversity index and evenness values were 1.59 ± 0.21 and 0.50 ± 0.04, respectively. In this area, Creel has been found in all research stations but the abundance was small. Species composition was relatively the same between sampling stations suggesting that there was no different in composition between north and south parts, which virtually comprise of different water masses. It showed that spatial distribution of zooplankton was relatively  wide-reaching. Keywords: zooplankton, copepoda, creel, Lamalera sea, and Sawu Sea.
INCREASING COLOR QUALITY OF RED EMPEROR SNAPPER Lutjanus sebae SEED THROUGH ENRICHED DIET WITH RED FRUIT Pandanus conoideus OIL AS BETA-CAROTEN SOURCE Titiek Aslianti; Afifah Nasukha
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (324.658 KB) | DOI: 10.29244/jitkt.v4i2.7778

Abstract

Market price of red emperor snapper Lutjanus sebae is often determined by its color performance. Adding beta-carotene on a fish diet would possibly escalate red pigmentation. Oil from a red fruit (Pandanus conoideus, Lam) known as potential beta-carotene source was used as a supplement diets. The dosage of 10, 5, and 0 ml were added to every kg of pellet as the treatment. Three hundred seeds with initial average length of 8.43±0.9 cm and body weight of 13.22±3.9 g were stocked in each of three unit fiberglass tank of 4 m3 seawater (salinity of 33-34). Experiment was conducted during three-month periods. Feeding frequency was twice a day with dosage of 3% of biomass. Monthly monitoring was done to measure the growth rate. Color performance was taken by digital photography at the end of observation and analyzed by conversion methods of color gradation using “Microsoft Adobe Photoshop-8”program. Carotene contents in the diets and fish body was examined. Fed effectivity values were observed by analysis of feed conversion ratio (FCR) and water quality that observed every 3 days. The results showed that the Pandanus conoideus oil as beta-carotene source had a significant role in increasing performance of red emperor snapper color i.e. brighten in red color. Ten ml dosage of Pandanus conoideus oil gave the best color and growth performance with 17.99 cm and 143.10 g for total length and body weight respectively, with 95.67% survival rate.Keywords: Beta-carotene, Color Performance, Red emperor snapper, Red fruit oil.
REPRODUCTION BIOLOGY OF TRUE PERCULA CLOWN FISH Amphiprion percula IN HATCHERY Ketut Maha Setiawati; Gunawan Gunawan; Jhon Harianto Hutapea
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (453.152 KB) | DOI: 10.29244/jitkt.v4i2.7780

Abstract

True percula clown fish (Amphiprion percula) is one of marine ornamental fish with high economic value and can spawn throughout the year in an aquarium. The aims of this research were to understand reproduction aspects of true percula clown fish broodstock in an aquarium. A pair of broodstock used in this experiment were 4-9 cm in total length and maintained in an aquarium of 60x40x30 cm3 dimension. Numbers of brrodstock were 18 pairs and each aquarium filled with one pair of broodstock. During the experiment, fish were fed with artificial feed first and one hour later with mysids shrimp and copepod until satiation twice a day. Parameters observed were broodstock size, numbers and hatching rate of eggs. The results showed, the size of spawned female were range from 6.6-9.5 cm and male from 4.6-6.2 cm. Average of eggs produced per spawning was varied 423±255 with the average of spawning frequency was 2.78±0.38 times/month. Broodstock was spawn partially with the maximum spawning frequency of single broodstock was 4 times/month. The biggest female with size of 9.5 cm was still productive and spawn 3 times/month. There was a pair of broodstock which can produce more than 700 eggs/spawning. This results indicated that true percula clown fish can spawn throughout the year in the aquarium with varied of eggs number and spawning frequency for each individual and spawning period. The average of hatching rate during the experiment was 79.72±13.73 % with range between first to the next spawning 0f 7-14 day.Keywords: reproduction, true percula clown fish, Amphiprion percula, hatching rate
GROWTH AND SURVIVAL OF TROPICAL ABALONE Haliotis asinina SEED IN CONCRETE TANKS AT DIFFERENTS STOCKING DENSITY Mat Sardi Hamzah; Sigit Anggoro Putro Dwiono; Safriyadi Hafid
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (365.875 KB) | DOI: 10.29244/jitkt.v4i2.7781

Abstract

Tropical abalones (Haliotis asinina) is a marine gastropod that has high economic value and consumed by people in the world. In 2002, the production of abalones was 4.076 ton from total production of marine fisheries in the world 8.000 ton. The countries that produce abalone by farming are Taiwan, Cina, South Africa, Japan, Cilie, USA, Australia and New Zealand. Information about the production in Indonesia is scarce. The main issue faced by farmer is higher mortality during post larvae and juvenile. The aim of this research was to observe the influence of abalone seed density in concrete tanks regarding to growth and survival. The research was conducted in January - May 2012 Mataram Marine Bio Industry Technical Implementation Unit, LIPI. Analysis of varians showed that seed densities was not significantly different (P>0.05). The highest survival rate were in density 75 individual/tank with 11.11 % mortality. The highest growth rate were in 50 individual/tank with shell growth rate 0.21cm/14 days and seed weight was 1.23 g.Keywords: growth, survival rate, seed of abalone (Haliotis asinina), density
PERIODS OF MOUTH OPENING AND YOLK ABSORPTION RELATED TO THE ACTIVITY OF DIGESTIVE ENZYMES IN THE EARLY STADIA FROM THE SECOND GENERATION OF HUMPBACK GROUPER BROODSTOCK Wawan Andriyanto; Muhammad Marzuqi
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (374.193 KB) | DOI: 10.29244/jitkt.v4i2.7782

Abstract

The experiment was carried out to determine the exposure time of the first mouth opening on humpback grouper larval from F2 broodstock on hatchery until 10 DAH (days after hatching) because this phase is a critical phase of larval adaptation from food endogenous (from yolk sac) to the ability of absorbing nutrients from external (exogenous). The eggs used were collected from natural spawning of second generation of humpback grouper reared in the tank size of 150 litre. The mouth opening was observed at 90 and 45 degrees under computerize integrated microscope and processed by a specific software. The rate of yolk absorption was observed in larvae from the beginning to the end of breeding, while the activities of digestive enzymes (trypsin and chymotripsin) were analyzed by enzyme assay techniques. The results showed that the period of mouth opening of larvae of humpback grouper occurred at 3 DAH with mouth openings of 45° as large as 0.103 mm and of 90° as large as 0.156 mm. In the early stadia, the diameter of yolk was 0.1875 mm, while the oil globule was 0.0537 mm. At 4 days after hatching, the yolk and oil globule had been absorbed, while the enzymes trypsin and chymotripsin were detected in the early stadia. The results also showed that the larvae was started to use foods from outside after the age of 4 DAH. Up to the age of 10 days, the mouth opening increased and the activity of trypsin and chymotripsin were still detected.Keywords: progeny larvae of humpback grouper F2, mouth opening, yolk sac, enzyme
EFFECT OF CALCIUM – PHOSPHOROUS WITH DIFFERENT RATIO ON NUTRIENT RETENSION AND CHANGES THE CHEMICAL COMPOSITION OF TIGER SHRIMP JUVENILE (Penaeus monodon FABR.) Zainuddin Zainuddin
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (173.76 KB) | DOI: 10.29244/jitkt.v4i2.7783

Abstract

Calcium and phosphorous are two important minerals because of their functions for growth and bone mineralization as well as lipid and carbohydrate metabolisms. The study purposes were to determine the effects of calcium and phosphorus with different ratios of nutrient retention and chemical composition changes of juvenile shrimp body. Organism used in this experiment were juvenile tiger prawns with an average weight of 3.43 ± 0.05 g/fish. Stocking density was 6 fish per aquarium (size 60cmx50cmx40cm). This research was formulated according to completely randomized design with four treatments and three replicates. The treatments applied were the ratio of calcium and phosphorus in shrimp food i.e., A (Ca/P=1:0,5), B (Ca/P=1:1,0), C (Ca/P=1:1.5) and D (Ca/P=1:2,0 ). Food was served four times per day i.e. 07.00 AM, 11.00 AM, 15.00 PM, and 21.00 PM.. The juvenile tiger prawns maintained for 8 weeks. The results showed that calcium and phosphorus with different ratios in the diet did not give effect to the retention of nutrients include protein, fat, calcium, and phosphorus. While the provision of calcium and phosphorus in different ratios to changes in body chemical composition includes protein, fat and ash content of juvenile tiger prawns have a significant effect except for crude fiber and BETN not significant. The result indicated that the ratio of Ca and P with a value of 1:1.0 to 1:1.5 gave better effect in changing the chemical composition of juvenile shrimp body.Keywords: tiger shrimp juvenile, retention of nutrients, chemical composition
THE GROWTH PATTERN OF BLACKSADDLED CORALGROUPER LARVAE (Plectropoma laevis LACEPÈDE, 1801) AND THEIR CONSUMPTION RATE TO ZOOPLANKTON ROTIFER (Brachionus rotundiformis) Regina Melianawati; Ni Wayan Widya Astuti; Bejo Slamet
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (237.983 KB) | DOI: 10.29244/jitkt.v4i2.7784

Abstract

Blacksaddled coralgrouper Plectropoma laevis has been started to conserve to prevent from over exploitation. The study purposes were to determine the growth pattern during larvae to juvenile stage of Blacksaddled coralgrouper and their consumption rate to zooplankton rotifers Brachionus rotundiformis. Domesticated broodstocks have been rearing in 100,000 l concrete tanks. The eggs from spawning broodstocks were hatched and the larvae have been kept to juvenile. Larvae rearing was done in 6,000 l concrete tanks. During the rearing period, larvae were fed with zooplankton rotifer, artemia and artificial food. Parameters measured were eggs and oil globule diameter, larval total length, length of larval dorsal fin and ventral fin, the number of zooplankton that consumed by larvae and water temperature. Microscopic method was used to measure the parameters. The result showed that eggs and oil globule diameter ranged in 800-850 μm and 168-200 μm, respectively. Total length of newly hatched larvae was 2.53±0.13 mm. The growth pattern of total length from larva to juvenile stage was exponential, while the growth pattern of dorsal fin and ventral fin length was linear. Larvae grew very fast after 35 days old. The pattern of larval consumption rate to zooplankton rotifers was linear. Time period from larvae to juvenile stage was 45-55 days on water temperature 27-29oC.Keywords: growth, consumption rate, rotifers, larvae, Blacksaddled coralgrouper
THE GRUNTS (FAMILY HAEMULIDAE) OF THE SPERMONDE ARCHIPELAGO, SOUTH SULAWESI Andi Iqbal Burhanuddin; Yukio Iwatsuki
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (195.201 KB) | DOI: 10.29244/jitkt.v4i2.7785

Abstract

Fish diversity monitoring could be utilized as a basis for formulating management regulation of the fisheries resources. This study was conducted to describe the grunt of the family Haemulidae from the Spermonde Archipelago, South Sulawesi. Specimens were collected in Rajawali and Paotere Fish Landing Port Makassar, South Sulawesi from August 2003 to November 2010. The results showed that there were thirteen species representing three genera of family Haemulidae inhabiting the area were examined and identified: Diagramma pictum (Thunberg, 1792), Plectorhinchus albovittatus (Rüppell, 1838), Plectorhinchus chaetodonoides Lacepède, 1801, Plectorhinchus chrysotaenia (Bleeker, 1855), Plectorhinchus flavomaculatus (Cuvier in Cuvier and Valenciennes, 1830), Plectorhinchus gibbosus Lacepède, 1802, Plectorhinchus lessonii (Cuvier in Cuvier and Valenciennes, 1830), Plectorhinchus lineatus (Linnaeus, 1758), Plectorhinchus picus (Cuvier in Cuvier and Valenciennes, 1830), Plectorhinchus polytaenia (Bleeker, 1852), Plectorhinchus vittatus (Linnaeus, 1758), Pomadasys argenteus (Forsskål, 1775), Pomadasys maculatus (Bloch, 1793). The local name available of each species was given.Keywords: grunt, haemulidae, spermonde, south Sulawesi
OPTIMALIZATION OF FEED DOSAGE AND FREQUENCY IN PRODUCTION OF ROTIFER (Brachionus rotundiformis) Rina P. Astuti; Sophia L. Sagala; Gunawan Gunawan; Gede S. Sumiarsa; Philip T. Imanto
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (431.113 KB) | DOI: 10.29244/jitkt.v4i2.7786

Abstract

The availability of rotifer as live food is importance in a larval mariculture. Therefore a continuous and high production of rotifer is needed. The study was aimed to determine the frequency and dosage of the best food in rotifer culture. Nannochloropsis oculata, yeast and scott’s emulsion are used as potential feeds for rotifer. Three dosages of N. oculata (150,000; 250,000, and 350,000 cells/ind.rotifer/day) were applied in the study and were given twice per day. Meanwhile, yeast(0.5 g/106 ind./day) and Scott’s emulsion with different dosages (2, 4, and 8 μg/106 ind./day) were given with two different feeding frequencies (two and four times a day) for each dosages. Each treatment was done in triplicates. Sampling of rotifer was conducted in the morning (AM) and afternoon (PM). Water quality (temperature, dissolved oxygen and ammonia) was also measured. Growth and productivity of rotifer were determined from the number of rotifer and the number of rotifer eggs, respectively. The results showed that the optimum productivity of rotifer was achieved by giving N. occulata of 250,000 sel/ind/day, twice a day in four days culture. Meanwhile, treatment with yeast and Scott’s emulsion gave best performance when applying 0.5 g/106 and 2 μg/106 ind./day twice per day, respectively. Yeast and scott’s emulsion treatment yielded optimum production in two days of culture.Keywords: rotifer, productivity, yeast, Scott’s emulsion, foodd dosage
ZOOPLANKTON SPATIAL DISTRIBUTION AND COMMUNITY STRUCTURE IN BANGGAI SEA Arief Rachman; Elly Asniariati
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 2 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (590.778 KB) | DOI: 10.29244/jitkt.v4i2.7787

Abstract

Banggai Sea is an interesting ecosystem due to mixing influences from Banda Sea in the west and Maluccas Sea in the east. Therefore, a unique zooplankton community structure and specific distribution pattern should be found in this area. This research was carried on using Baruna Jaya VIII research vessel and samples were collected in 14 sampling stations. Vertical towing using NORPAC plankton net (300 μm) was conducted to collect zooplankton samples. Result showed that inner Mesamat Bay had the lowest abundance of zooplankton, probably due to low water quality resulted from anthropogenic activity. Meanwhile the strait between Liang and Labobo Island had the highest zooplankton abundance in Banggai Sea. Calanoids was the dominant zooplankton taxa in the ecosystem and contributing 55.7% of total density of zooplankton community. The highest importance value made this taxa to be very important factor that regulates the lower trophic level organisms. Results also showed that zooplankton was distributed nearly uniform in eastern but aggregated to several stations in western Banggai Sea. Zooplankton abundance was higher in the central of Banggai Sea, compared to western and eastern area. According to Bray-Curtis clustering analysis the strait between Liang and Labobo Island has unique zooplankton community structure. This might happened due to mixing of water from two highly productive seas that influenced the Banggai Sea ecosystem. From this research we conclude that this strait probably was the zooplankton hot spot area which might also indicate that this area also a hot spot of fishes in the Banggai Sea.Keywords: spatial distribution, zooplankton, community structure, hot spot, Banggai

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