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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 54 Documents
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Efektivitas Teknologi Nano dalam Menghambat Bakteri Vibrio harveyi Tusyahrah, Aulia; Alifia, Frida; Cahyono, Indra
Jurnal Riset Diwa Bahari (JRDB) Volume 2, Nomor 2, 2024
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.v2i2.35

Abstract

Vibrio harveyi is a Gram-negative marine bacterium from the genus Vibrio known for its ability to emit light (bioluminescence). This bacterium is rod-shaped, moves using flagella at one end, has facultative anaerobic properties, and thrives in environments with high salt content (halophilic). Vibrio harveyi is often found in tropical and subtropical marine waters, especially in coastal ecosystems. Nanotechnology, which is the focus of this study, is a technology based on objects (structures) that are at the nanometer level, often used in biomedical and environmental applications. The purpose of this study was to determine the effect of SLS (nanoenzyme) in inhibiting the growth of Vibrio harveyi, which can cause disease in various marine organisms, including fish and shrimp. The method used in this study was experimental with a quantitative approach, where various concentrations of SLS were tested on bacterial growth. This study was conducted from June to July 2024, under controlled laboratory conditions. The results of this study indicate that the effect of SLS (nano enzyme) cannot inhibit the growth of Vibrio harveyi bacteria at various concentrations, namely 100%, 40%, 20%, and 10%. This is thought to be due to the particle size of the nano, where a smaller nanoparticle size can increase its effectiveness as an antimicrobial. In addition, several other methods need to be tested on SLS (nano enzyme) to understand further its ability to inhibit the growth of Vibrio harveyi bacteria, such as combining with other antimicrobial materials or modifying the nanoparticle structure.
Pengaruh Kombinasi Probiotik Komersial Dan Bahan Herbal Terhadap Volume Flok dan Pertumbuhan Ikan Nila (Oreochromis niloticus) Nursyahran, Nursyahran; Ramadhani, Arda; Mulyawan, Ardi Eko
Jurnal Riset Diwa Bahari (JRDB) Volume 2, Nomor 2, 2024
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.v2i2.37

Abstract

Biofloc technique is a cultivation method that utilizes microorganisms, especially heterotrophic bacteria, to convert toxic inorganic nitrogen waste, such as ammonia, into biomass that is beneficial for fish. In the biofloc system, heterotrophic bacteria play an important role in the formation of flocs, which are aggregates of microorganisms and organic particles that function as additional food sources for fish. These bacteria use nitrogen from ammonia in water to produce biomass, which can then be eaten by fish. This study aims to examine the effect of a combination of commercial probiotics and herbal ingredients on the growth of tilapia (Oreochromis niloticus). The method used in this study was an experiment with a Completely Randomized Design (CRD) consisting of four treatments and three replications. The treatments tested included treatment A (control), treatment B (EM4 + Ginger), treatment C (EM4 + Kencur), and treatment D (EM4 + Turmeric). This study was conducted for 35 days at the Moncongloe Maros Aquaculture Institute, with test fish in the form of tilapia seeds measuring 5-7 cm and aged 1 month. The results showed that the combination of commercial probiotics and herbal ingredients in treatment C (Probiotic EM4 + Kencur) produced the highest floc volume of 20.17 mL, while treatment D (EM4 + Turmeric) produced the lowest floc volume of 12.04 mL. Treatment C also recorded the highest Specific Growth Rate (SGR), which was 2.90%, while treatment D recorded the lowest SGR of 2.41%. Kencur is considered to have a positive effect because of its essential oil content which functions as a sedative effect, helps fish physiology, increases growth, maximizes protein digestibility, and increases feed efficiency. Anova analysis showed that SGR had a significant effect (P<0.05), while absolute length growth and survival rate did not show significant differences between treatments (P>0.05).
Efektivitas Penghambatan Ekstrak Daun Chaya (Cnidoscolus aconitifolius) terhadap Bakteri Vibrio harveyi Aldiwa, Nurul Fitri; Basir, Buana; Mulyawan, Ardi Eko
Jurnal Riset Diwa Bahari (JRDB) Volume 2, Nomor 2, 2024
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.v2i2.38

Abstract

Vibrio harveyi bacteria are one of the main causes of mass mortality in shrimp in a short time. Chaya (Cnidoscolus aconitifolius) is a common plant that grows in many places in Central America, the Yucatan Peninsula of Mexico and has been widely cultivated in tropical and subtropical areas. The purpose of this study was to analyze the content of secondary metabolites in chaya leaves as antibacterials against Vibrio harveyi and to analyze the amount of inhibition of chaya leaves against Vibrio harveyi bacteria. The method used in this study was experimental with 4 treatments with 3 replications each, namely A (500 µg/mL chaya leaf extract) B (1000 µg/mL chaya leaf extract) C (Oxytetracycline antibiotic) and D (96% ethanol). The study was conducted from June to July 2024 at the Laboratory of Parasites and Fish Diseases, Faculty of Marine Sciences and Fisheries, Hasanuddin University. The results showed that the activity of chaya leaf extract (Cnidoscolus aconitifolius) did not show inhibition against V. harveyi bacteria at concentrations of 500 and 1000 µg/mL. Likewise, 96% ethanol did not show inhibition against V. harveyi bacteria. The inhibitory activity of Oxytetracyclin showed inhibitory activity with an average inhibition size of 9.26 mm. This is thought to be due to the low sensitivity of chaya leaf extract to V. harveyi bacteria. V. harveyi is known as a bacteria with a high level of malignancy when infecting, so it is thought to require a substance with stronger inhibitory activity.
Analisis Kimia Telur Ikan Tuna Mata Besar (Thunnus obesus) dari Berbagai Tingkat Kematangan Gonad Putri, Tri Widayati; Kamaruddin, Nurulhikmah; Khairiyah, Zul
Jurnal Riset Diwa Bahari (JRDB) Volume 3, Nomor 1, 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.v3i1.39

Abstract

Bigeye tuna (Thunnus obesus) is a type of large pelagic fish belonging to the Scombriade family that can spawn repeatedly during the spawning season. Bigeye tuna eggs have several phases of gonad maturity, including gonad maturity level IV and gonad maturity level V. This study aims to determine the chemical composition and mineral composition of bigeye tuna eggs (Thunnus obesus) from two levels of gonad maturity, namely gonad maturity level IV and gonad maturity level V. The parameters analyzed were water content, ash content, protein content, fat content, iron and zinc with three repetitions for each parameter. This study was conducted from June to August 2024. Sampling was carried out at two different locations with samples in the form of bigeye tuna eggs (Thunnus obesus). The results of the study showed that bigeye tuna eggs from gonad maturity level IV had a water content of 69.94%, ash content of 4.04%, protein content of 20.43%, fat content of 0.94%, iron content of 34.42% and zinc content of 142.58%. While the gonad maturity level V had a water content of 72.01%, ash content of 3.22%, protein content of 19.82%, fat content of 1.55%, iron content of 14.83% and zinc content of 172.50%. Based on the statistical results, it showed that bigeye tuna eggs had significant differences (significantly different) in water content, ash content, protein, fat, iron and zinc at two gonad maturity levels IV and gonad maturity level V.
Fermentasi Pakan Maggot (Hermetia illucens) untuk Sintasan dan Pertumbuhan Ikan Nila (Oreochromis niloticus). Alifia, Frida; Nurwahidah, Nurwahidah; Heriansah, Heriansah
Jurnal Riset Diwa Bahari (JRDB) Volume 3, Nomor 1, 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.v3i1.40

Abstract

This study aims to examine the effect of fermented maggot feeding on the survival and growth of tilapia (Oreochromis niloticus) as an effort to increase feed efficiency in fish farming. Maggots are known as an alternative feed source rich in protein, but the fermentation process is needed to increase the digestibility and availability of nutrients. This study was conducted for six weeks at the Moncongloe Aquaculture Institute using an experimental trial method with a Completely Randomized Design (CRD) consisting of four treatments, namely A (maggots without fermentation as a control), B (maggots fermented with SLS), C (maggots fermented with EM4), and D (maggots fermented with Yakult), with each treatment being repeated three times. The main parameters measured included survival and absolute weight growth of tilapia. Based on the results of the study, the highest survival data was obtained in treatment B with a value of 86.7%, followed by treatments C and D which were each 83.3%, and treatment A (control) of 73.3%. Meanwhile, the absolute weight growth parameter showed the highest value in treatment B at 5.92 g, followed by treatment C at 5.79 g, treatment D at 5.58 g, and treatment A at 5.29 g. The results of the analysis of variance (ANOVA) revealed that the provision of fermented maggot feed did not have a significant effect on the survival of tilapia, but had a significant effect on its absolute weight growth. The treatment of maggot fermented with SLS (treatment B) showed superior results compared to other treatments, indicating that certain types of fermentation can increase the effectiveness of feed in supporting the growth of tilapia. Thus, this study provides scientific evidence that maggot fermentation, especially using SLS, is a potential method to improve the quality of fish feed, so that it can be applied as an innovation in the development of more efficient and sustainable fish farming
Pengaruh Pemberian Pakan Maggot (Hermatia illucens) yang Difermentasi terhadap Efesiensi Pakan dan Daya Cerna pada Ikan Nila (Oreochromis niloticus) Yaqin, Nurul; Heriansah, Heriansah; Nursyahran, Nursyahran
Jurnal Riset Diwa Bahari (JRDB) Volume 3, Nomor 1, 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.v3i1.41

Abstract

Maggot is one of the local ingredients that has many benefits and many properties. Maggot is one of the feeds that is easy to make using organic waste. Fermentation is one of the applications of microbes in an effort to improve the quality of feed raw materials. The purpose of this study was to determine the effect of fermentation materials on the efficiency of tilapia (Oreochromis niloticus) feed and to determine the effect of fermented feed on digestibility in tilapia (Oreochromis niloticus). The method used in this study was experimental, where the experimental treatments were the types of feed and fermentation materials consisting of 4 combinations with 3 repetitions each, namely A (100% Maggot feed), B (Maggot 100 g fermented with 20 mL nano enzyme). C (Maggot 100 g multivariant fermentation 20 ml), D (Maggot 100 g fermented with 20 ml Lactobacillus). This research was conducted from May to July 2024 at the Moncongloe Maros Aquaculture Institute Laboratory. The results of the study showed that the highest feed utilization efficiency was in treatment B (SLS) with a value of 43.79%, followed by treatment D (yakult) with a value of 42.83% followed by treatment C (Em4) with a value of 42.38% and the lowest feed efficiency was in control treatment A (Maggot) of 34.46. Furthermore, maggot feed fermentation also had a significant effect (P <0.05) on the protein efficiency ratio in tilapia (Orerochromis niloticus).
Potensi dan Strategi Pengembangan Budidaya Ikan Nila (Oreochromis niloticus) di Kota Kabupaten Puncak Jaya Papua Tengah Karangan, Agustinus; Cahyono, Indra; Latif, Nursidi
Jurnal Riset Diwa Bahari (JRDB) Volume 3, Nomor 1, 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.v3i1.36

Abstract

Since 2016, tilapia fish farming has begun to be developed in Puncak Jaya Regency, especially in several districts in the capital city of the district, including Mulia District, which is the center for developing tilapia fish farming areas. Puncak Jaya Regency is located in a mountainous area with an altitude of 500 - 4000 mbpl with an average of 2237 mbpl above sea level. These geographical conditions are obstacles that must be overcome to develop tilapia fish farming which is highly demanded and needed by the mountain community to meet their daily nutritional needs. This study aims to 1) Analyze the factors and potential of fish farming. 2) fish farming development strategies in the city of Puncak Jaya Regency. The method used was to conduct interviews with questionnaires to business actors in farming, related agencies and officials at the regional government level and the DPRD, then analyzed with IFE and EFE Analysis and to determine the strategy, a SWOT analysis was carried out. The results of the study showed 1) business actors in farming were productive age cultivators with a high school education level (33%), small business scale (40%) and production results of 100 - 250 kg / cycle (46.7%); 2) Internal and external factors that have a great influence are geographical location, government support, fish prices, consumer needs and security which are the main threat factors; 3) Development strategies to increase production by adding cultivation ponds, developing alternative artificial feed with local raw materials, assisting independent seed production and government support to overcome security threats by distributing assistance for cultivation facilities and infrastructure more evenly to all heterogeneous social groups.
Optimalisasi Tambak Garam di Desa Bontomanai Kabupaten Pangkep Nompo, Marwah; Sumarni, Sumarni; Toniasih, Ni Ketut
Jurnal Riset Diwa Bahari (JRDB) Volume 3, Nomor 1, 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.v3i1.42

Abstract

This study aims to analyze and identify strategies for optimizing salt ponds through the application of modern technology and sustainable management in the coastal areas of Pangkep Regency, especially in Bontomanai Village. The method used in the study is a mixture, or mixed methods with a descriptive analytical approach that aims to describe and analyze the existing conditions of salt ponds and factors that affect the productivity and quality of salt in the field. Data collection techniques used are observation, interviews and questionnaires consisting of two data sources, namely primary and secondary data sources. Meanwhile, the data analysis technique used is descriptive analysis, namely data reduction, data presentation, and drawing conclusions, as well as SWOT analysis. The results of the study indicate that optimizing salt ponds in Bontomanai Village requires an approach that considers local conditions and the potential of available resources. Traditional salt ponds still rely on hereditary methods, but face limitations in efficiency and dependence on the weather. Meanwhile, the application of modern technology has been shown to increase salt productivity and quality, despite facing challenges such as high investment costs and training needs for farmers. Therefore, an approach that combines traditional and modern methods is a more sustainable solution. Integration of technology in certain aspects can increase production efficiency without completely abandoning traditional methods that are more cost-effective and environmentally friendly. With this strategy, optimization of salt ponds can be carried out gradually, improving the welfare of farmers, and strengthening the competitiveness of the salt industry in the area.
Optimalisasi Budidaya Udang Windu (Penaeus monodon) Melalui Pendekatan Teknologi dan Manajemen Terpadu di Kecamatan Labakkang Kabupaten Pangkep Nompo, Marwah; Hasanuddin, Hasanuddin; Rabi’ah, Sitti
Jurnal Riset Diwa Bahari (JRDB) Volume 2, Nomor 2, 2024
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.v2i2.43

Abstract

The research method used is a mixed method by combining qualitative and quantitative research which aims to analyze the conditions of tiger shrimp cultivation in Labakkang District and evaluate the application of technology to improve production efficiency. The data collection techniques used are interviews and observations. Meanwhile, the data analysis techniques used in this study include descriptive analysis and inferential statistics. The results show that most farmers still rely on traditional and semi-intensive cultivation systems, which face major challenges in the form of technological limitations, fluctuations in water quality, and high operational costs. Suboptimal water circulation systems in traditional ponds lead to low dissolved oxygen levels and high accumulation of organic waste. The dissolved oxygen level in traditional ponds ranges from 3.5–4.2 mg/L, while in semi-intensive ponds, it is better, namely 4.5–5.0 mg/L. As a solution, the application of biofloc systems is proven to increase productivity and reduce feed costs. Ponds using biofloc technology showed lower ammonia levels (0.01–0.03 mg/L) compared to conventional ponds (0.05–0.08 mg/L), with an increase in production of 30% and a survival rate of 85% of shrimp. In addition, the use of water aeration and recirculation systems showed an increase in dissolved oxygen levels of up to 6.0 mg/L, which improved shrimp health and reduced mortality rates due to environmental stress. More controlled feeding efficiency was also shown to lower feed conversion (FCR) from 1.5 to 1.2, which contributed to increased shrimp growth and reduced operational costs. This study suggests the adoption of modern technology, better water quality management, and feeding efficiency to increase productivity and sustainability of tiger shrimp farming in Labakkang.
Produktivitas Penangkapan Ikan Air Tawar Dengan Alat Tangkap Bubu Dasar di Sungai Tommo Kabupaten Mamuju Irsandi, Irsandi; Kantun, Wayan; Demallulu, Arnold
Jurnal Riset Diwa Bahari (JRDB) Volume 3, Nomor 1, 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.v3i1.44

Abstract

Bubu is a traditional fishing tool for catching freshwater fish in areas around rivers, lakes and swamps. Catches using traps tend to decrease. In connection with this, this research aims to analyze the productivity of traps using different baits. This research was conducted from May to June 2023 in Tommo Village, Mamuju Regency. This research is classified as a type of experimental research with the design used in this research being a Randomized Block Design with three groups and four different bait treatments, namely no bait, fine bran, corn and sweet potatoes. Determination of sampling stations was carried out by purposive sampling according to the conditions of the research site. The results showed that the composition of fish species caught with 287 bran baits, 41 sweet potato baits and 76 corn baits. Distribution of catch weight using bran bait 0.193 ± 0.140 g, sweet potato bait 0.167 ± 0.166 g and corn 0.209 ± 0.150 g. Productivity based on overall catch for bran, sweet potato and corn bait respectively 71.04; 10.15 and 18.81%. Based on the catch rate, the productivity obtained with bran bait was 1.844 g/trip, sweet potato bait 0.228 g/trip and corn bait 0.531 g/trip. The highest productivity by station was obtained by using bran feed at station III. The best productivity was using bran bait while the highest weight was using corn bait.

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