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ILMU KELAUTAN: Indonesian Journal of Marine Sciences
Published by Universitas Diponegoro
Articles
385
Articles
Coloration Characteristic and Population Genetic Analysis of Wild-Captured Giant Tiger Shrimp (Penaeus monodon) from Aceh Timur

Indriatmoko, Indriatmoko, Hedianto, Dimas A., Moria, Sari Budi, Tjahjo, Didik WH

ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 23, No 3 (2018): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

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Abstract

Giant tiger shrimp (Penaeus monodon) has become a prime commodity in Indonesia which was produced by aquaculture and capture fisheries activities. Aceh Province, in this case mostly represented by Aceh Timur District, was well-known as the center of wild-captured-adult giant tiger shrimp. Several previous investigations had proved for its high-quality shrimp spawner in producing good eggs in quality and quantity under artificial spawning condition. Two main interesting points of wild giant tiger shrimp from Aceh Timur came from their coloration and population clusters. This report was aimed to provide that information pre-preliminary and highlighted quantitative information of coloration characteristic through RGB (Red Green Blue) and CIE Lab color space data analysis, as well as, 16S rDNA-PCR-RFLP genetic comparison among four population clusters in Aceh Timur Waters. The color analysis resulted in significant differences between wild-captured and pond-cultured giant tiger shrimp which produced R value 0.1524±0.0091 and 0.1268±0.0004, respectively. Total pixel analysis through L* a* b* color space has distinguished detailed differentiation between wild-captured and pond-cultured giant tiger shrimp acquired images. It is known that most of the wild-captured image pixels were concentrated in quadrant I (+a, +b) while pond-cultured in quadrant II (-a, +b) and III (-a, -b).Genotyping of represented samples from 4 population clusters, i.e. Aceh Tamiang, Langsa, Peudawa, and Julok produce 2 haplotype composite, AAA and AAB. Among 4 clusters, it was found that Julok has become the only cluster which has a different haplotype composite ratio (1:1) (D 0.0348, V 0,9501) from the others (4:1)(V 0.9504).

Osmoregulation Pattern of Fingerling Vanname Shrimp (Litopenaeus vannamei) Rearing in Three Molt Stage Iso-Osmotic Media

Anggoro, Sutrisno, Suprapto, Djoko, Purwanti, Frida

ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 23, No 3 (2018): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

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Abstract

Vanname shrimp (Litopenaeus vannamei) is one of euryhaline Crustacean that able to adapt to a wider range of salinities. The need of suitable media for a given size and molting stage of shrimp is a key factor of the success of shrimp culture. In order to ensure the success of fingerling Vanname shrimp (FVS) rearing, it is indispensable to provide suitable osmotic media for the molting process. This research was aimed to examine and determine isoosmotic media that complies with physiological process of FVS. The research was done in laboratory scale with Completely Randomized Design. FVS was acclimated to three salinities level i.e. 15-16 ‰ as the postmolt isosmotic media, 25-26 ‰ as the intermolt isosmotic media, and 29-30 ‰ as the premolt and molt isosmotic media with three replications. The result showed that in the media of 25-26 ‰, the osmotic work revealed the minimal level and it enhanced the growth rate without changing the amino acids composition in the shrimp body tissue.

Potential Bacterial Symbion of Sea Urchin As a Multi-Drug Resistant (MDR) Antibacterial Agent Against Staphylococcus aureus and Escherichia Coli Bacteria

Fofied, Suzana Kristy Satriani, Sabdono, Agus, Wijayanti, Diah Permata

ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 23, No 3 (2018): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

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Abstract

Staphylococcus aureus and Escherichia coli are pathogenic bacteria agent of many human diseases. Those bacteria infect in various levels and also been antibiotic resistants. Bacterial resistance has become a serious global problem. The purposes of this study were to isolate and identify the symbiotic bacteria of the Sea Urchin that have an antibacterial activity of the Strain Multi-Drug Resistant (MDR) against Staphylococcus aureus and Escherichia coli. Sea Urchin was taken from Panjang island, Jepara Indonesia at 2-3 m depth. The symbiotic bacteria were isolated from Sea Urchin by using dilution method and spread plate method. Phenotypic characteristics was observed on colony shape, color and texture of growing bacteria. While the streak method was used to purify bacterial symbion. The antibacterial activity test was performed using overlay method. The results showed that 3 out of 37 isolates have antibacterial activity against Staphylococcus aureus and Escherichia coli. The BB.03.35 isolate was selected for molecular identification due to the largest inhibitory zone diameter. The sequence of this bacterium showed 97% homology and closely related to Pseudoalteromonas flavipulchra.

Status of Coral Health and Disease in Kessilampe Waters, Kendari, South East Sulawesi

Palupi, Ratna Diyah, Rahmadani, Rahmadani, Ira, Ira

ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 23, No 3 (2018): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

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Abstract

Diseases of coral reef organisms have become a global threat to coral reefs and a major cause of reef deterioration. The presence of coral diseases influence marine resources productivity that interact with coral reefs. The purpose of this research is to identify coral disease types and prevalence which include coral health compromiser. Data collection was done by using 40 m2 belt transects at three observation stations. The result showed that the White Syndrome (WS), Bleaching, Ulcerative White Spot (UWS), Skeleton Eroding Band (SEB), White Patch (WP), and Non Focal Bleaching were found at research sites, while the coral health compromisers were Sediment damage, fish bite, invertebrate galls, flatworm infestation, and pigmentation response. In addition disease of White Syndrome (WS), Bleaching, and Ulcerative White Spot (UWS) were the main disease with prevalence of disease is approximately 4%, while the others were lower than 1%. Overall the prevalence of diseases (14,52%) is higher than compromise health (13,98%). A total of 186 coral colonies observed with 27 colonies were affected by diseases. Meanwhile, the waters quality (salinity, pH, and nitrate) were below the threshold quality standards for marine aquatic animal and not supported of coral organism was presume organisms against pathogens bacterial. Although the prevalence of coral disease is still in normal condition but the decrease of water quality can lead the risk. Good management is required from local government to improve the water quality especially from terrestrial impact.

Periphyton Response Analysis to the Pollution in Seagrass Ecosystem Panjang Island, Banten

Sugianti, Yayuk, Muntalif, Barti Setiani, Sudjono, Priana

ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 23, No 3 (2018): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

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Abstract

Increases in coastal pollutants, largely due to human activity on land, have an impact on seagrass ecosystems. The high sedimentation in the waters causes an increase in the concentration of sludge, organic matter, nutrients, and turbidity which reduce the depth that can be reached by sunlight. The condition affects seagrass ecosystems adversely. Changes in water condition can be illustrated by the presence of water organisms. One dominant organism in seagrass ecosystems is periphyton. The existence of periphyton in the waters is determined by physical and chemical conditions of the waters because it has specific limit of tolerance, which causes different community structure. To analyze periphyton response to the changes of environmental quality in seagrass ecosystems, Shannon Winner diversity and Saprobic Indices were measured at Panjang Island, Banten. The results of water quality assessment indicates the status of aquatic seagrass of the island considered as polluted to heavy polluted. It is observed from some physico-chemical parameters that exceeded the standard quality for the life of seagrass ecosystems and marine life. Based on the classification and saprobic coefficient using periphyton biological parameters, the condition of seagrass land ecosystem in the island is classified into β Mesosaprobic to β/α Mesosaprobic phase, which indicates light to medium pollution with pollutants including organic and inorganic materials. Several types of dominant periphyton were discovered during the observations, including Meridion sp, Navicula sp, Nitzschia sp and Synedra sp. This periphyton species belong to Bacillariophyceae class (Family Chrysophyta) that is commonly used to assess the condition of eutrophication and organic pollution on waters.

Identification of Carotenoids in Halimeda macroloba Reef Associated Bacteria

Astuti, Wiwik, Radjasa, Ocky Karna, Karwur, Ferry Fredy, Rondonuwu, Ferdy S.

ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 21, No 4 (2016): Jurnal Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

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Abstract

Several carotenoid pigments which are produced by sea microorganisms are shown to function as antimicrobe compounds and potential antioxidants. Coral reefs with high levels of diverse biota facilitate Halimeda as a primary component and producer to have associated bacteria that produce relatively unknown metabolic compounds. This research attempts to isolate bacteria that are associated with Halimeda macroloba, identify it, as well as analyze the pigment content produced. A yellow-orange bacteria colony is successfully isolated and given the temporary name MK_HM. This bacteria is in the shape of circular (oval) rods and are gram-variable bacteria. Based on the sequencing analytical results, Blast homology, as well as a phylogenetic analysis, it shows that the bacteria have a relationship with Exiguobacterium aestuarii TF-16 at 94%, so that it can be strongly predicted that the MK_HM strain is a new species. This pigment analysis, which is conducted on the Exiguobacterium sp. MK_HM bacteria extract, reveals that this strain produces carotenoid pigments of diadinochrome, semi-α-carotenone, dinoxanthin, and P457. Keywords: Exiguobacterium, carotenoid, diadinochrome, semi-α-carotenone, dinoxanthin, and P457.

Recruitment Status of Coral Reefs (Scleractinian) after Earthquake and Tsunami in North Pagai Island of Mentawai Islands Regency

Pranoto, Suparno, Arlius, Arlius

ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 21, No 4 (2016): Jurnal Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

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Abstract

Recruitment of coral is marked by the appearance of reef colonies that are still juvenile. Coral recruitment data after the earthquake and tsunami are very few either in Indonesia or in other part of the world. The purpose of this study is to analyze the level of recruitment and to analyze recruitment diversity of coral reef Scleractinian in the waters affected by tsunami (west coast) and not affected by tsunami (east coast) of North Pagai Island. The observation on coral recruitment used benthic quadrate sampling method with a size of 1x1m2 and the diameter of colony taken measured between 0.5–10 cm. The result of the study shows that the average of recruitment density at the west coast (affected by tsunami) ranged between 0.78–3.67 colonies.m-2 and at the east coast (not affected by tsunami) ranged between 5.11–11.67 colonies.m-2. Coral recruitment level of the east coast is within the category of medium to very high while coral recruitment level of the west coast is in very low to low category. Diversity index (H) of east coast and west coast ranged between 1.55–2.54 with medium category, evenness index (E) of east coast and west coast ranged between 0.87–0.97 with stable category, and dominance index (C) with values ranging from 0.10–0.13 with low category.. Types of coral Porites cylindrica is growing rapidly and has the highest level of recruitment after the tsunami. Keywords: recruitment reef, tsunami, coral, North Pagai Island

Angular Range Analysis (ARA) and K-Means Clustering of Multibeam Echosounder Data for Determining Sediment Type

Fahrulian, Fahrulian, Manik, Henry M, Jaya, Indra, Udrekh, Udrekh

ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 21, No 4 (2016): Jurnal Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

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Abstract

Backscatter value was a key to determine seabed characteristic. Level of intensity or backscatter informed through seabed type. One approach was use to analyze seabed type based on the value of backscatter was Angular Range Analysis (ARA). ARA utilize influence of angle backscattering intensities. The aim of this research was to determine value of backscatter from the bottom and used to initial prediction of seabed. Extraction processes of raw data obtained by acoustic signal processing techniques. Analysis of backscatter data was conducted by using K-means method to look the proximity of the centroid backscatter value against other values. Backscatter intensity from this sites ranged from -41,93 dB to -27 dB. The range value divided into three major classes based on Wenworth scale classification. Substrate type in the study site consists of sand, silt, and clay. Grain size diameter of each type include: sand 0.122713 mm (phi = 3.02), silt 0.018171 mm (phi = 5.78) and clay 0.002690 mm (phi= 8.53). Based on this result, signal processing multibeam echosounder able to classify seabed backscatter values to determine the seabed type Keywords: Angular Range Analysis, multibeam echosounder, K-Means

Effects of Microencapsulated Synbiotic Administration at Different Dosages against heavy co-infection of White Spot Disease (WSD) and Vibrio harveyi in Pacific White Shrimp (Litopenaeus vannamei)

Yunarty, Yunarty, Yuhana, Munti, Widanarni, Widanarni

ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 21, No 4 (2016): Jurnal Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

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Abstract

White spot disease (WSD) is one of infectious disease in shrimp caused by white spot syndrome virus (WSSV). This study aimed to determine the dosage immunological effects and growth performances of microencapsulated synbiotic (Bacillus NP5 and mannan oligosaccharide) at different dosages on Pacific white shrimp.  The microencapsulated synbiotic   was administered as feed supplementation  against the co-infection of   WSSV and Vibrio harveyi. Synbiotic was encapsulated by spray drying method, further feed supplemented to Pacific white shrimp for 30 days at a  dosages of 0.5% (A), 1% (B), 2% (C) and control treatments, i.e. without any microencapsulated synbiotic administration as positive control (D) and negative control (E). The challenge test was performed on day 30 after feeding supplementation, then the experimental shrimps were injected by WSSV intramuscularly   at the infective dosage of 104 copies.-ml-1. Afterwards,   24 hours after WSSV injection the shrimps were immersed in water contained cells suspension of V. harveyi  at the cells population dosage of 106 CFU-.ml-1. All synbiotic treatments showed better results with the values of Total Haemocyte Count (THC), Phenoloxidase (PO) and Respiratory Burst (RB), were higher (P<0.05) compared to positive control. The specific growth rates (SGR) of A, B and C showed higher than both controls of D and E. The feed conversion ratio (FCR) value of synbiotic treatments were lower (P<0.05) than both controls. However, the administration of microencapsulated synbiotic have not been able to prevent heavy impact of WSSV and V. harveyi co-infection due to lower SR and mortality pattern which continued to increase.  Keywords: Synbiotic, Litopenaeus vannamei, WSSV, Vibrio harveyi, co-infection

Condition of 137Cs Activity in Karimunjawa Waters and its Distribution When an NPP Jepara is Operated

Muslim, Muslim, Suseno, Heny, Saodah, Siti

ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 21, No 3 (2016): Jurnal Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

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Abstract

Karimunjawa islands are located in the middle of the Java Sea, approximately 83 km northwest of Jepara city. These islands have become an Indonesian marine tourism destination and since 2001 had been designated as a national park. The Indonesian government has chosen Muria peninsula in the district of Jepara, Indonesia as a site for a potential nuclear power plant (NPP). The purpose of this study was to determine the current level of radiocesium (137Cs) activity and forecast its spread if an NPP is operated at Jepara. To determine the distribution of 137Cs in Karimunjawa waters, a sampling of water was done in six stations. Simulation modeling was used to map the distribution of 137Cs should an NPP be constructed in Jepara. The results showed that 137Cs activity in Karimunjawa waters ranges from 0.12 to 0.39 mBq.L-1 with an average of 0.24 mBq.L-1. This value is slightly higher than previous studies in the coastal waters of Gresik, which had an average activity of 0.200 mBq.L-1 because the waters around Karimunjawa have a lower dilution rate than the coastal waters of Gresik. However, these values were considerably lower than those in the waters of Northeast Japan before the Fukushima nuclear power plant accident which registered 137Cs activity at 2-3 mBq.L-1.This indicates that 137Cs in Karimunjawa is not entirely from Fukushima rather from the global fallout. The 137Cs distribution model suggests that after 15 days, a leakage in the Muria Peninsula nuclear plant will not contaminate Karimunjawa waters because the current in the Java Sea is relatively weak and dominant in the westward direction. Thus, when an NPP leak only runs for 15 days, Karimunjawa waters remain safe.Keyword: 137Cs, Karimunjawa, NPP, modeling, Muria Peninsula

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