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ILMU KELAUTAN: Indonesian Journal of Marine Sciences
Published by Universitas Diponegoro
ISSN : 08537291     EISSN : 24067598     DOI : -
Core Subject : Science,
Earth & Planetary Sciences
ILMU KELAUTAN: Indonesian Journal of Marine Sciences (IJMS) is dedicated to published highest quality of research papers and review on all aspects of marine biology, marine conservation, marine culture, marine geology and oceanography.
Arjuna Subject : -
Articles 773 Documents
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Exploring the Anti-Inflammatory Potential of Ethyl Acetate Extract of Lobophytum sp. from Southeast Sulawesi Sea Adryan Fristiohady; Diasty Nuraisya; Lidya Agriningsih Haruna; Parawansah Parawansah; Agung W.M. Yodha; La Ode Muhammad Julian Purnama; Sahidin Sahidin; Rathapon Asasutjarit; Muhammad Hajrul Malaka
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 4 (2025): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.30.4.533-543

Abstract

Compounds derived from marine organisms have gained significant interest for their potential therapeutic effects on inflammatory diseases. Lobophytum sp., a soft coral species, has demonstrated anti-inflammatory properties by inhibiting the production of TNF-α and IL-1β, two crucial cytokines involved in the inflammatory process. This study assessed the anti-inflammatory potential of the ethyl acetate extract of Lobophytum sp. (LEA) using in vivo models. The extract was obtained through maceration using ethyl acetate.  Phytochemical screening identified various bioactive compounds, including flavonoids, alkaloids, and terpenoids, known for their ability to modulate various biological pathways. To evaluate the anti-inflammatory effects, LEA was tested in a mouse model of xylene-induced ear edema, a common assay for inflammation. Diclofenac sodium, a well-known anti-inflammatory drug, was used as a positive control. LEA was administered at a dose of 0.05, 0.1, and 0.2 mg.mL-1. The results revealed that LEA significantly reduced the swelling of the ear and suppressed the release of key pro-inflammatory cytokines, such as TNF-α and IL-1β. The expression levels of IL-1β and TNF-α were measured using the ELISA reader method. These findings suggest that the anti-inflammatory effects of LEA are likely mediated by the modulation of inflammatory signalling pathways, potentially involving the inhibition of cytokine production. The most effective dose in this study was 0.1 mg.mL-1. Overall, the results highlight the promising therapeutic potential of LEA as a natural anti-inflammatory agent. Further investigation is needed to explore the underlying mechanisms of action and evaluate its clinical applications for treating inflammatory diseases.
Geospatial Assessment of Water Suitability for Rabbitfish (Siganus sp.) Cultivation in Moyohilir Waters, West Nusa Tenggara Sarjito Sarjito; Beta Ali Syahbana; Muhammad Helmi; Anindya Wira Satriya; Parichat Wetchayont; Restiana Wisnu Ariyati
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 4 (2025): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.30.4.485-496

Abstract

Rabbitfish (Siganus sp.) is an economically valuable fishery commodity widely consumed in eastern Indonesia, with increasing demand for animal protein. Indonesia’s rabbitfish production rose steadily from 13.6 million tons in 2011 to 22.6 million tons in 2016 but declined after 2017, reaching 21.8 million tons in 2021. Most of this production came from capture fisheries, with only a small portion from the aquaculture sector. To address the declining production, sustainable farming development is essential to improve the stability of rabbitfish supply. The waters of Moyohilir, Sumbawa Regency, exhibit strong potential for rabbitfish cultivation. However, a comprehensive site suitability assessment is essential before initiating aquaculture activities. This study utilized Geographic Information Systems (GIS) to analyze spatial suitability for floating net cage systems. Primary water quality data, namely temperature, salinity, pH, dissolved oxygen, brightness, nitrate, phosphate, and seabed type, were collected from 40 purposively selected sampling points. Secondary data on current speed and water depth were obtained from 2023 bathymetric and wind speed datasets. All parameters were analyzed geospatially using ArcGIS version 10.8. The results revealed three suitability classes: Less Suitable (39.98%; 479.86 ha), Moderately Suitable (48.38%; 595.4 ha), and Suitable (12.64%; 155.57 ha). Based on this assessment, 10% of the Moderately Suitable and Suitable areas, equivalent to 75.1 ha, are recommended for cultivation. This area has the potential to produce up to 117.55 tons of rabbitfish per cycle, supported by 830 floating net cage units, assuming a 60% survival rate.
Reproductive Biology of the Rivulated Parrotfish (Scarus rivulatus) in the Seribu Islands: Fecundity, Sex Ratio, Gonadosomatic Index, and Spawning Patterns Asri Yanti; Sulistiono Sulistiono; Ali Mashar; Nurfajar Nurfajar; Sebastian C..A. Ferse; Ambo Tuwo
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 4 (2025): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.30.4.544-556

Abstract

Scarus rivulatus is a protogynous hermaphroditic parrotfish closely associated with coral reefs and plays an important ecological role in maintaining reef health through grazing activities. However, information on its reproductive biology in the Seribu Islands, Jakarta, Indonesia, remains limited, although such knowledge is important for sustainable fisheries management. This study aimed to examine the sex ratio, gonadosomatic index (GSI), fecundity, and spawning pattern of S. rivulatus. A total of 2,425 specimens were collected monthly from January to December 2022. Sex identification was based on body coloration and morphology and confirmed by gonadal examination, with individuals classified as female, initial-phase (IP) male, or terminal-phase (TP) male. Total length and body weight were measured, and gonads were analyzed to determine sex, GSI, fecundity, oocyte diameter distribution, and histological characteristics. The overall sex ratio was 1:0.8 (male:female), with females dominating smaller size classes and males occupying larger ones, indicating a protogynous reproductive strategy. GSI values varied throughout the year, with spawning peaks in February, September, and December. Fecundity ranged from 17,013 to 178,813 oocytes and showed positive correlations with total length and body weight. Oocyte diameter distribution and histological observations indicated asynchronous ovarian development, suggesting partial spawning and gradual oocyte release throughout the year. These results highlight the importance of protecting larger individuals and applying seasonal closures and size-based harvesting regulations to maintain population sustainability. This study provides baseline data that can support future management efforts, and further research should explore sex transition processes and larval recruitment dynamics to strengthen ecosystem-based fisheries approaches.

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