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JURNAL RISET DIWA BAHARI
Published by Institut Teknologi dan Bisnis Maritim Balik Diwa
ISSN : -     EISSN : 30323177     DOI : -
Core Subject : Science, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Immunology & microbiology
Jurnal Riset Diwa Bahari merupakan jurnal yang diterbitkan oleh Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Institut Teknologi dan Bisnis Maritim Balik Diwa, Makassar. Jurnal Riset Diwa Bahari menerima naskah penelitian dan ulasan mengenai biologi kelautan, ekologi perairan, perikanan (budidaya ikan, penangkapan ikan, pengolahan, keanekaragaman spesies, alat tangkap), pencemaran udara, penginderaan jauh kelautan, mikrobiologi, bioteknologi, dan pengelolaan pesisir.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Perairan
Articles 67 Documents
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Pemanfaatan Eceng Gondok (Eichhornia crassipes) Dengan Fermentasi Limbah Tuna (Thunnus albacares) Sebagai Pakan Ikan Nila (Oreochromis niloticus) Indra Cahyono; Stefanus Takege; Wayan Kantun
Jurnal Riset Diwa Bahari (JRDB) Volume 3, Nomor 2, 2025
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Institut Teknologi dan Bisnis Maritim Balik Diwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63249/jrdb.v3i2.107

Abstract

This study aims to analyze the effect of the use of water hyacinth (Eichhornia crassipes) fermented with tuna waste (Thunnus albacares) on the growth, feed efficiency, and survival of tilapia (Oreochromis niloticus). Fermentation is carried out using Lactobacillus sp. and Saccharomyces cerevisiae for five days in anaerobic conditions at 35°C. A complete randomized design was used with four fermentation dose treatments (0, 10, 20, and 30 ml/kg feed) as well as three replicas. The results showed that a fermentation dose of 20 ml/kg resulted in the highest absolute weight growth (167.6 ± 11.24 g), the best specific growth rate, the lowest feed conversion ratio (FCR) (0.81), and the highest survival rate (93.3 ± 1.92%). Excessive fermentation doses (30 ml/kg) reduce feed digestibility due to increased crude fiber. Statistical analysis showed a significant influence (p < 0.05) between treatment on growth and feed efficiency. The results indicate that fermentation of fish stomach waste at moderate doses can increase the nutritional value of water hyacinth and support the concept of zero waste aquaculture using environmentally friendly local materials
Asosiasi Ikan Karang Pada Media Transplantasi Rangka Model Penyu di Pulau Barrang Caddi, Kota Makassar Muh. Imran Lapong; Krisnayanti Krisnayanti; Fathuddin Fathuddin; Sri Wulandari
Jurnal Riset Diwa Bahari (JRDB) Volume 3, Nomor 2, 2025
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Institut Teknologi dan Bisnis Maritim Balik Diwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63249/jrdb.v3i2.108

Abstract

Recent studies show the importance of artificial structures in supporting the recovery of coral reef ecosystems, particularly in improving the association of reef fish that play an important role in the ecological balance of tropical seas. The innovation in the use of turtle-shaped transplant skeletons is the main highlight because it is able to attract higher biodiversity than conventional methods. This study aims to evaluate the parameters of water quality, diversity index, and abundance of reef fish species associated with the transplant structure. Data collection was carried out using the Underwater Visual Census (UVC) method at two different sampling moments of the season. The first sampling is during the rainy season, and the second sampling is during the dry season. The environmental parameters measured included salinity, temperature, pH, and water currents, while biotic indicators included the Shannon-Wiener diversity index (H') and species density (ind/m²). The results showed that all water quality parameters were within the standard range of marine quality for marine life (First side: salinity 32.6 ppt; temperature 31 °C; pH 7.7; current 0.05 m/s and second sampling: salinity 32 ppt; temperature 30.6 °C; pH 7.5; current 0.07 m/s). A total of sixteen species of fish were found to be associated with transplanting media, including Plotosus lineatus, Siganus margaritiferus, Ptereleotris heteroptera, Abudefduf vaigiensis, Chromis atripectoralis, Aeoliscus strigatus, Petroscirtes mitratus, Chaetodon octofactiatus, Abudefduf sexfactiatus, Meiacanthus grammistes, Cheilodipterus artus, Cheilinus chlorourus, Siganus virgatus, Chrysiptera parasema, Synanceia verrucosa and Sargocentron xantherythrum. The first sampling showed a lower diversity value (H' = 316.76; D = 2.3 ind/m²) compared to the second sampling (H' = 322.10; D = 3.28 ind/m²). This difference is influenced by dry season conditions that lead to increased clarity and penetration of sunlight, which significantly supports the abundance of biota. These findings confirm the potential of innovative transplant structure design in supporting sustainable coral fisheries conservation.
Analasis Sintasan dan Pertumbuhan Kerang Pada Sistem Integrated Agriculture Aquakulture (IAA) Model Floating-Bed Berbasis GIS Andrian Dwi Dwi Putra; Arnold Kabangga; Nursyahran Nursyahran; Heriansah Heriansah; Is Arianto Pratama
Jurnal Riset Diwa Bahari (JRDB) Volume 3, Nomor 2, 2025
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Institut Teknologi dan Bisnis Maritim Balik Diwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63249/jrdb.v3i2.109

Abstract

Fish farming activities in ponds produce waste in the form of feed residues and metabolic products such as urine and feces. To minimize the accumulation of these residual nutrients, an Integrated Multi-Trophic Aquaculture (IMTA) system is applied that combines organisms of different trophic levels: fed organisms (fish, shrimp), organic extractive organisms (sea cucumbers, shellfish, sea urchins), and inorganic extractive organisms (seaweed). This study aims to evaluate the influence of floating-bed-based integrated cultivation system on the survival and growth of kijing clams (Corbicula sp.). The experimental design used a Group Random Design (RAK) with nine units of experimental ponds at the People's Hatchery Unit (UPR) Sipurennu, Soppeng Regency, for 90 days. Three treatments were tested based on floating-bed moving time intervals: A (no displacement), B (10-day replacement), and C (20-day replacement). The main parameter observed was Absolute Weight Growth (PBM). The results showed that the highest PBM was found in treatment B (117.6 g), while the lowest was in treatment A (31.5 g). The ANOVA test showed significant differences between treatments (P<0.05), indicating that the frequency of displacement of extractive species affects the growth rate. In conclusion, the Integrated Agriculture-Aquaculture (IAA) system with a floating-bed model has a significant impact on the survival and growth of kijing mussels through the management of ecological utilization of aquaculture waste
Analisis Sistem Pertumbuhan dan Sintasan Ikan Kakap, Kerang Hijau dan Anggur Laut Pada Budidaya Terintegrasi Sistem Resirkulasi Terkontrol Lusiana Lusiana; Heriansah Heriansah; Arnold Kabangnga; Nur Annisa Firliana Muchlis; Muh. Imanuddin Akmal
Jurnal Riset Diwa Bahari (JRDB) Volume 3, Nomor 2, 2025
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Institut Teknologi dan Bisnis Maritim Balik Diwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63249/jrdb.v3i2.110

Abstract

Integrated aquaculture or IMTA is a cultivation method that involves several communities with different trophic levels, in terms of the utilization of food sources (energy) in the waters. To determine the effect of species combinations on snapper growth in integrated cultivation of controlled recirculation system and To determine the effect of species combination on snapper survival in integrated cultivation of controlled recirculation system, the research method used was Complete Random Design (RAL) with 4 treatments and 3 replications and used ANOVA (Analysis Of Variance) data. The results showed that the survival of white snapper during 5 weeks of maintenance showed that the cultivation system had a significant effect on the ability of fish to survive, with the highest value in P4 treatment (IMTA) of 85.0% and lowest in P1 treatment (monoculture) of 43.80%, while P2 and P3 treatment reached 54.20% and 60.40% respectively. This pattern indicates that the integration of snapper with green shellfish and sea grapes in the IMTA system is able to create a more stable maintenance environment and support fish survival through the use of feed waste and feces as a source of nutrition for other organisms, thereby reducing the accumulation of toxic materials such as ammonia that have the potential to trigger stress and death. The results of ANOVA's analysis, which showed a significant influence of species combinations on synthesizers, as well as Tukey's follow-up tests, which confirmed the very real difference between P4 and other treatments, reinforced that integrated aquaculture approaches are more effective than monocultures or simple polycultures in improving the survival of white snapper in a closed recirculation system
ANALYSIS OF WATER QUALITY ON THE PRODUCTIVITY OF SEAWEED CULTIVATION OF Kappaphycus alvarezii IN WEST SEBATIK DISTRICT, NUNUKAN REGENCY Novita Trisnawati Tarzanto; Indra Cahyono
Jurnal Riset Diwa Bahari (JRDB) Volume 4, Issue 1, 2026
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Institut Teknologi dan Bisnis Maritim Balik Diwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63249/jrdb.v4i1.131

Abstract

Water quality is a critical factor influencing the growth and productivity of seaweed cultivation. This study aimed to analyze the relationship between water quality characteristics and the productivity of Kappaphycus alvarezii cultivated using the long-line method in West Sebatik District, Nunukan Regency. The study was conducted from September to December 2025 in three villages, namely Setabu, Binalawan, and Liang Bunyu, using a quantitative approach with an observational and descriptive-analytical design. Water quality parameters measured included temperature, salinity, pH, dissolved oxygen, transparency, current velocity, depth, nitrate, and phosphate. Productivity was evaluated based on growth performance and annual production. The results indicated that all water quality parameters were generally within suitable ranges for seaweed cultivation. Binalawan exhibited the highest transparency (1.50 ± 0.15 m) and phosphate concentration (0.30 ± 0.06 mg L⁻¹), resulting in the highest biomass (388 g) and specific growth rate (4.182% day⁻¹). Liang Bunyu recorded the highest annual dry production (6,435 tons year⁻¹) due to its larger cultivation area. The findings highlight the importance of water quality management and site selection in improving the productivity and sustainability of K. alvarezii cultivation
ANALYSIS OF FRESHWATER LOBSTER GROWTH AND SURVIVAL (Cherax quadricarinatus) FED WITH NATURAL FEED AND CALCIUM CARBONATE SUPPLEMENTATION Muh. Hasbir; Nursyahran Nursyahran
Jurnal Riset Diwa Bahari (JRDB) Volume 4, Issue 1, 2026
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Institut Teknologi dan Bisnis Maritim Balik Diwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63249/jrdb.v4i1.132

Abstract

Feed quality and mineral availability play important roles in determining the growth and survival of freshwater lobster (Cherax quadricarinatus). This study aimed to analyze the effects of natural feed supplemented with calcium carbonate on the growth and survival performance of freshwater lobster. The experiment was conducted from March to April 2025 at the Freshwater Hatchery of Pangkep State Polytechnic of Agriculture using a completely randomized design with three treatments and three replications. The treatments consisted of commercial shrimp pellets (control), Tubifex sp. supplemented with 10% CaCO₃, and earthworms supplemented with 10% CaCO₃. Lobsters were reared for 42 days and fed daily at 3% of biomass. Absolute growth and survival rate were used as response variables, and the data were analyzed using one-way ANOVA followed by Tukey’s HSD test. The results showed that dietary treatments significantly affected both growth and survival (p < 0.05). The highest absolute growth (0.29 ± 0.005 g) and survival rate (88.89 ± 5.55%) were obtained in lobsters fed Tubifex sp. supplemented with 10% CaCO₃, whereas the control treatment produced the lowest values. Water quality parameters remained within acceptable ranges for freshwater lobster culture throughout the study. These findings indicate that the combination of natural feed and calcium carbonate supplementation can enhance growth performance and improve survival in freshwater lobster culture.
ANALYSIS OF AMINO ACID PROFILE OF ANCHOR SAUCE (Stolephorus sp.) WITH THE ADDITION OF PAPAIN ENZYME Ariansyah Ariansyah; Mutemainna Karim; Tri Widayati Putri; Zul Khairiyah
Jurnal Riset Diwa Bahari (JRDB) Volume 4, Issue 1, 2026
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Institut Teknologi dan Bisnis Maritim Balik Diwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63249/jrdb.v4i1.133

Abstract

Kecap ikan teri merupakan produk fermentasi yang kaya protein sehingga berpotensi menghasilkan kandungan asam amino yang tinggi. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan enzim papain terhadap total asam amino serta mutu organoleptik kecap ikan teri dan membandingkannya dengan kecap tanpa enzim. Metode penelitian menggunakan dua perlakuan, yaitu A (0g enzim papain) sebagai kontrol dan B (10g enzim papain). Analisis komposisi asam amino dilakukan menggunakan kromatografi cair kinerja tinggi (HPLC), sedangkan evaluasi organoleptik dilakukan melalui uji hedonik. Data diolah dengan uji non-parametrik menggunakan Mann-Whitney U. Hasil analisis menunjukkan bahwa total asam amino sampel A adalah 19.49% w/w, sedangkan sampel B adalah 11.54% w/w, yang menunjukkan rendahnya kadar asam amino akibat penambahan enzim papain. Hasil uji organoleptik menunjukkan bahwa penambahan enzim papain menurunkan nilai rasa pada sampel B 2.6 (cukup suka) dan nilai warna pada sampel B 3.1 (cukup suka), sedangkan sampel tanpa penambahan enzim papain meningkatkan nilai rasa pada sampel A 2.7 (cukup suka) dan nilai warna pada sampel A 3.3 (cukup suka), sedangkan sampel tanpa penambahan enzim papain menunjukkan penurunan nilai bau pada sampel A 2.5 (kurang suka) dan nilai tekstur pada sampel A 2.8 (cukup suka), sedangkan pada sampel dengan penambahan enzim papain menunjukkan peningkatan nilai bau pada sampel B 2.6 (cukup suka) dan nilai tekstur pada sampel B 3.0 (cukup suka). Hasil uji Mann-Whitney U menunjukkan bahwa penambahan enzim papain berpengaruh negatif terhadap asam amino dan nilai organoleptic rasa dan warna kecap ikan teri.
COMPARISON OF GROWTH RATE OF Acropora cervicornis AND Echinopora horrida CORAL IN TRANSPLANTATION OF TURTLE, TABLE AND SPYDER MODELS ON BARRANG CADDI ISLAND Ihsan Ihsan; Hartati Tamti
Jurnal Riset Diwa Bahari (JRDB) Volume 4, Issue 1, 2026
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Institut Teknologi dan Bisnis Maritim Balik Diwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63249/jrdb.v4i1.134

Abstract

Coral transplantation has become one of the most widely applied approaches for accelerating reef recovery in degraded marine ecosystems. This study aimed to compare the growth rate and survival of Acropora cervicornis and Echinopora horrida transplanted using Turtle, Table, and Spyder models on Barrang Caddi Island, South Sulawesi. The experiment was conducted for eight weeks at depths of 7–10 m using 60 coral fragments equally distributed among three transplantation models. Growth rate was measured based on linear extension, while survival rate and oceanographic parameters were also monitored. Data were analyzed using descriptive statistics, one-way analysis of variance (ANOVA), and Welch's independent t-test. The results showed that A. cervicornis exhibited higher growth rates than E. horrida across all transplantation models. The Turtle model produced the highest growth of A. cervicornis (2.39 mm), whereas the Table model yielded the greatest growth of E. horrida (1.77 mm). Survival rates reached 90% for A. cervicornis and 100% for E. horrida. One-way ANOVA indicated significant differences among transplantation models for both species (p < 0.05). Oceanographic conditions remained within optimal ranges throughout the study. These findings demonstrate that transplantation model configuration significantly influences coral growth and that species-specific restoration strategies are essential for improving coral rehabilitation success.
ANALYSIS OF THE DEGRADABILITY OF AZO DYES AND MICROBES BIOPLASTICS FROM CELLULOSE Kappaphycus alvarezii Zhaleha Zhaleha; Tri Widayati Putri; Awaluddin Awaluddin; Zul Khairiyah
Jurnal Riset Diwa Bahari (JRDB) Volume 4, Issue 1, 2026
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Institut Teknologi dan Bisnis Maritim Balik Diwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63249/jrdb.v4i1.136

Abstract

The increasing accumulation of non-biodegradable plastic waste has encouraged the development of environmentally friendly alternatives derived from renewable natural resources. One promising material is cellulose extracted from the red seaweed Kappaphycus alvarezii, which possesses favorable characteristics for bioplastic production. This study aimed to evaluate the degradability of azo dyes and microbial activity in bioplastics produced from K. alvarezii cellulose with different cellulose-to-cassava starch ratios. The research was conducted from July to October 2025 using five formulations: F1 (5:5), F2 (8:2), F3 (2:8), F4 (0:10), and F5 (10:0). Cellulose extraction was performed through alkaline and acid hydrolysis methods, while bioplastic films were produced through solution casting with glycerol as a plasticizer. Azo dye degradation was analyzed using UV–Visible spectrophotometry, whereas microbial activity was evaluated through Total Plate Count (TPC) analysis. The UV–Vis results revealed no characteristic absorption peaks of azo dyes in the 300–500 nm wavelength range, indicating the absence or successful degradation of azo chromophores in all formulations. Cellulose-rich formulations exhibited higher optical transparency and greater film homogeneity than starch-dominated formulations. TPC values ranged from 0 to 420 CFU g⁻¹ and remained substantially below the maximum limit established by SNI 7388:2009 (4,400 CFU g⁻¹), confirming excellent microbiological quality and product safety. Statistical analysis using the Kruskal–Wallis test showed no significant differences among formulations (p > 0.05). The combined findings demonstrate that cellulose-based bioplastics derived from Kappaphycus alvarezii possess good biodegradation potential, are free from detectable azo dye contamination, and maintain low microbial contamination levels. Therefore, these bioplastics have strong potential as sustainable alternatives to conventional petroleum-based plastics for food packaging, cosmetic packaging, and other environmentally sensitive applications
FEASIBILITY ANALYSIS OF FISH FLOUR BUSINESS IN KEMBANG DAHLIA SMEs, BUKI DISTRICT, SELAYAR ISLANDS REGENCY Rahmi Sari; Mutemainna Karim; Awaluddin Awaluddin; Muh. Ayusal Salam
Jurnal Riset Diwa Bahari (JRDB) Volume 4, Issue 1, 2026
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM) Institut Teknologi dan Bisnis Maritim Balik Diwa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63249/jrdb.v4i1.138

Abstract

The fish processing industry plays an important role in increasing the added value of fisheries products and strengthening the economic resilience of coastal communities. This study aimed to evaluate the financial feasibility of the fish floss business operated by Kembang Dahlia SME in Buki District, Selayar Islands Regency. The research was conducted from May to July 2025 using a case study approach. Primary data were collected through observations, interviews, documentation, and structured questionnaires, while secondary data were obtained from institutional reports and relevant literature. Financial feasibility was analyzed using investment cost analysis, production cost analysis, Break-Even Point (BEP), Net Present Value (NPV), Benefit-Cost Ratio (BCR), and Internal Rate of Return (IRR). The results showed that the enterprise required an initial investment of IDR 25,170,000 and maintained annual production costs ranging from IDR 43.13 million to IDR 47.60 million during 2022–2024. Annual revenues ranged from IDR 109.50 million to IDR 136.05 million, generating net profits between IDR 66.37 million and IDR 88.45 million. The business consistently produced above the break-even production level, while the selling price remained substantially higher than the break-even price. Financial feasibility indicators demonstrated positive results, including an NPV of IDR 53,648,180, a BCR of 1.35, and an IRR of 123%, all exceeding the accepted investment criteria. These findings indicate that the fish floss business operated by Kembang Dahlia SME is financially feasible, profitable, and sustainable. Strengthening production capacity, improving product diversification, and expanding market access are recommended to enhance long-term business competitiveness and profitability

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