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Journal of Fisheries & Marine
Published by Universitas Airlangga
ISSN : 20855842     EISSN : 25280759     DOI : https://doi.org/10.20473/jipk.v16i1.44436
Core Subject : Science,
Biochemistry, Genetics & Molecular Biology
Jurnal Ilmiah Perikanan dan Kelautan (JIPK; English: Scientific Journal of Fisheries and Marine) ISSN International Centre | ISSN:2528-0759 (Online) | ISSN: 2085-5842 (Print) JIPK is a peer-reviewed and open access biannually (April and November) that published by the Faculty of Fisheries and Marine, Universitas Airlangga. The aim of JIPK is to publish exciting, empirical research, recent science development, and high-quality science that addresses fundamental questions in fisheries and marine. JIPK only accepts manuscripts written in full English and processes submitted original script related of scope to fisheries and marine science and not being published by other publishers. We publish four categories of papers; 1) Original research papers, 2) Critical review articles, 3) Short communications, and, 4) Special Issue on applied or scientific research relevant to freshwater, brackish and marine environments. This journal gives readers the state of art of the theory and its applications of all aspects of fisheries and marine science. The scope of this journal includes, but is not limited to the research results of: Aquaculture, Fish Diseases, Marine science, Oceanography, Aquatic resources management, Fisheries product technology, Fish capture, technology, Fishery agribusiness, Fishery biotechnology/molecular genetics, Fish health management. JIPK has been indexed in Scopus, DOAJ, Sinta 1, Dimensions, Crossref, and others indexing. This journal has been accredited as a 1st Grade Scientific Journal (Sinta 1) by the Ministry of Research, Technology, and Higher Education of Indonesia since 8 December 2020.
Arjuna Subject : Biokimia, Genetika dan Biologi Molekuler - Biokimia
Articles 582 Documents
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Identification of Hard Coral Disease (Scleractina) in Seribu Islands Riyanti; Khusna, Faridatul; Siringoringo, Rikoh Manogar; Abrar , Muhammad; Giyanto; Sari, Ni Wayan Purnama
Jurnal Ilmiah Perikanan dan Kelautan Vol. 17 No. 3 (2025): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v17i3.72665

Abstract

Graphical Abstract   Highlight Research Coral colonies affected by coral disease are identified and counted. White syndrome is a type of coral disease that is dominattly found. Coral cover in the Kepulauan Seribu is in moderate condition. A weak correlation between the prevalence of coral disease and live cover in the Kepulauan Seribu     Abstract Kepulauan Seribu is designated as a marine conservation area in Kepulauan Seribu National Park and is one of high tourism development areas on the north side of Jakarta, the capital city of Indonesia. Anthropogenic sources from these nearby areas has reduced the health condition of coral reefs and increased the prevalence of coral diseases in the study area. This study aimed to determine the genus of coral infected by disease, the type of disease, and the relationship between the prevalence of disease and live cover in Kepulauan Seribu. Data was collected using the survey method. Coral cover is assessed using Underwater Photo Transect (UPT) and disease is assessed using Belt Transect methods, respectively. The result showed that 14 genera of coral species were infected and dominated by Porites, Montipora, and Acropora. Furthermore, there were 5 types of diseases, dominated by White Syndrome (WS), Atramentous Necrosis (AtN) and Ulcerative White Spots (S). The correlation analysis results showed a very low relationship between disease prevalence and live coral cover (r = 0.10). This research can be used as input or reference for more sustainable coral reef management, by improving an integrated coastal education system for the younger generation and developing more sustainable tourism activities in the future in Kepulauan Seribu.
Spatio - Temporal Distribution of Nitrate and Phosphate in Serayu Watershed, Central Java, Indonesia Vita Hidayati, Nuning; Arviani, Ilma Azizah; Rani Samudra, Sesilia; Agus Salim; Dewi Wisudyanti Budi Hastuti; Nabela Fikriyya; Abdul Malik Firdaus; Tri Susanti; Ghofar Ismail Putra; El Mountassir El Mouchtari
Jurnal Ilmiah Perikanan dan Kelautan Vol. 17 No. 3 (2025): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v17i3.72871

Abstract

Graphical Abstract   Highlight Research First study to analyze the three-year spatiotemporal distribution of nitrate and phosphate in the Serayu River Basin. Reveals seasonal and spatial nutrient hotspots linked to agricultural runoff and domestic activities. Identifies strong correlations: nitrate with TSS and COD (2021), and phosphate with COD (2021–2022) and pH (2023). Supports integrated watershed management through evidence-based nutrient pollution assessment using PCA and spatial mapping.     Abstract The Serayu Watershed is a vital area in Indonesia, where agricultural runoff contributes to nutrient enrichment in rivers. This study offers novelty as it is the first to analyze the spatiotemporal distribution of nitrate and phosphate in the Serayu River over a three-year period (2021–2023). The research aims to support sustainable watershed management by examining nutrient dynamics and their correlation with environmental parameters such as dissolved oxygen (DO), pH, total suspended solids (TSS), and chemical oxygen demand (COD). Water sampling was conducted at 15 stations across upstream, midstream, and downstream segments. Data were analyzed using Microsoft Excel and PAST 4.03, applying Principal Component Analysis (PCA) and biplot methods. Results showed nitrate levels were highest downstream in 2021, but shifted upstream in 2022–2023, likely due to organic matter decomposition. Phosphate remained highest midstream throughout the period, linked to domestic activity and land use. Nitrate levels fluctuated seasonally, especially during the rainy season, while phosphate levels were relatively stable. Spatial mapping highlighted dynamic nitrate changes in Banjarnegara and Cilacap, with phosphate distribution remaining more uniform. Correlation analysis revealed nitrate was related to TSS and COD in 2021, had no significant correlation in 2022, and was linked with pH in 2023. Phosphate consistently correlated with COD and pH. These findings emphasize that both natural and human-induced factors drive nutrient variability in the Serayu watershed, underlining the urgency of integrated watershed management to control nutrient pollution and protect water quality.
Assessing various administration strategies for dsRNA vaccine delivery: a concise review of VP15-WSSV research progress in tiger shrimp Penaeus monodon Parenrengi, Andi; Lante, Samuel; Suryati, Emma; Rosmiati, Rosmiati; Sulaeman, Sulaeman; Herlinah, Herlinah; Andriani, Yosie
Jurnal Ilmiah Perikanan dan Kelautan Vol. 17 No. 3 (2025): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v17i3.73580

Abstract

Graphical Abstract     Highlight Research 1. The dsRNA application should correspond to the developmental stages of shrimp2. Immersion method was commonly used for larvae for handling many individuals3. Injection technique effectively delivered dsRNA to cells but was unsuitable for large-scale4. Oral administration of pellet-enriched dsRNA was applicable to apply on shrimp larvae, juveniles, and broodstocks     Abstract RNAi technology offers a novel powerful approach to silence gene expression by introducing double-stranded RNA (dsRNA) into the cell to degrade the mRNA at the post-transcriptional stage. An administration method of dsRNA delivery is one of the main considerations in applying the dsRNA vaccine for controlling pathogen infections. This mini-review was focused on the evaluation of three different methods (immersion, injection, and oral administration) of VP15-dsRNA vaccine delivery to the tiger shrimp post-WSSV challenge test. The immersion method was generally applied for the larval stage of tiger shrimp and seemed to be a simple technique for a large number of individuals in a small tank. The VP15-dsRNA application by immersion improved the survival of tiger shrimp larvae by 3.9% compared to the control groups. The injection technique was an effective way to deliver dsRNA to the cell, but it is difficult to apply in a large number of individuals or populations. The injection of VP15-dsRNA increased significantly the survival rate, proPO, and THC of tiger shrimp. A higher survival rate (75%) was exhibited in tiger shrimp injected with in vivo and in vitro VP15-dsRNA than in the control. Oral administration by pellet-enriched VP15-dsRNA was a useful way for larvae, juveniles, and broodstocks, but it has limitations since the pellet leaches into the water. The application of the VP15-dsRNA vaccine on the feed significantly enhanced the 26.7% higher survival rate compared to the control. The higher survival was also supported by a higher number of THC. The three VP15-dsRNA delivery methods provide potential approaches to increase tiger shrimp resistance to control pathogen infection
Characteristics of Different Chitosan Types on κ-Carrageenan Polyelectrolyte Complex (PEC) Bioplastics as Food Packaging Puteri, Dhena Celia Haryadi; Alamsjah, Mochammad Amin; Sulmartiwi, Laksmi
Jurnal Ilmiah Perikanan dan Kelautan Vol. 17 No. 3 (2025): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v17i3.74222

Abstract

Graphical Abstract   Highlights Research 1. This study investigates the impact of incorporating chitosan from different sources (shrimp, crab, and fish scales) with varying molecular weights on the mechanical characteristics of bioplastics used for food packaging. 2. The present study aims to optimize the volume ratio of κ-carrageenan and chitosan to form stable polyelectrolyte complexes (PECs) for bioplastic production. 3. This study evaluates the quality of tilapia fillets wrapped with κ-carrageenan and chitosan PEC bioplastics after 24 h storage. 4. The present study investigates the reaction mechanism involved in the formation of polyelectrolyte complexes between κ-carrageenan and chitosan for bioplastic production.     Abstract Bioplastic represents an eco-friendly alternative to synthetic plastic and can be derived from natural polysaccharides like carrageenan. κ-carrageenan is noted for its gel-forming properties, making it a common raw material for bioplastics. Mechanical properties values of κ-carrageenan bioplastics are usually below standard. The addition of materials such as chitosan can enhance those properties. Chitosan-carrageenan can form polyelectrolyte complexe (PEC) through electrostatic interactions without toxic crosslinking agents. Polymer’s molecular weight is a crucial factor influencing PEC formation. Chitosan's molecular weight varies based on the raw material and extraction process. This study aims to identify the most suitable type of chitosan for food packaging bioplastics using polyelectrolyte complex (PEC) method. Three types of commercial chitosan with different molecular weights were evaluated (shrimp, crab, and fish scale chitosan). Japanese Industrial Standards (JIS) were used for characterization assessment of bioplastics such as thickness, tensile strength, water resistance, water vapor transmission, and biodegradation rate as well as additional tests including Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM) analysis, and Total Plate Count (TPC) on fish fillets. The findings indicated that crab chitosan-κ carrageenan PEC bioplastic exhibited optimal results with a thickness of 0.178 mm, tensile strength of 18.053 MPa, elongation at break at 211.73%, water resistance of 63.94%, water vapor transmission (WVT) of 0,001456 g/m2/day, biodegradation rate of 3.358% over 7 days, and the lowest TPC in fish fillets after 24 h, increasing from 4.39 log CFU/g to 7.45 log CFU/g. Molecular weight of chitosan was shown to significantly influence the PEC bioplastics’ characteristics.
Response Surface Methodology for Optimized Concentration of Gum Arabic, Maltodextrin, and Whey Protein Isolate in Arthrospira platensis Phycocyanin Microcapsules Pebriyanti, Puspa; Budhiyanti, Siti Ari; Ekantari, Nurfitri
Jurnal Ilmiah Perikanan dan Kelautan Vol. 17 No. 3 (2025): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v17i3.74555

Abstract

Graphical Abstract   Highlight Research Phycocyanin could be encapsulated by the spray-drying process with gum Arabic (GA), maltodextrin (MD), and whey protein isolate (WPI) as coating materials. The selected optimal formula for phycocyanin microcapsules consisted of 8.3% GA, 11.7% MD, and 5.2% WPI. The optimum formulation can produce phycocyanin microcapsules meeting 76.56% of the desired targets. The concentrations of three encapsulant ingredients (GA, MD, and WPI) influenced the resulting characteristics, e.g., phycocyanin content, antioxidant activity, encapsulation efficiency, phycocyanin retention, solubility, and particle size   Abstract Phycocyanin is a blue-colored phycobiliprotein in Arthrospira platensis known for its antioxidant properties. Due to its sensitivity to pH, temperature, light, oxygen, and moisture, protecting phycocyanin pigments often involves microencapsulation through spray drying. This process allows the pigments to be rapidly entrapped within a wall material. The wall material for these microcapsules was composed of gum arabic, maltodextrin, and whey protein isolate. This study aimed to determine the optimal concentrations of these components to optimize encapsulation performance. Optimization was performed using the Minitab application with Response Surface Methodology (RSM) and a Central Composite Design (CCD). The independent variables were the concentrations of gum arabic, maltodextrin, and whey protein isolate, while the response variables measured included yield, phycocyanin content, antioxidant activity, encapsulation efficiency, phycocyanin retention, solubility, and particle size. Scanning electron microscopy (SEM) was used to analyze the morphology of the optimized microcapsules. The Minitab analysis recommended 20 potential optimization solutions, with the highest desirability value of 0.7656. The selected optimal formula consisted of 8.3% gum arabic, 11.7% maltodextrin, and 5.2% whey protein isolate. Predicted response values for this formulation were as follows: yield 75.30%, phycocyanin content 4.55%, antioxidant activity 48.87%, encapsulation efficiency 98.98%, phycocyanin retention 68.57%, solubility 95.15%, and particle size 212.73 nm. Validation results confirmed a yield of 81.70%, phycocyanin content of 3.56%, antioxidant activity of 52.08%, encapsulation efficiency of 93.96%, phycocyanin retention of 62.42%, and a particle size of 212.73 nm. These findings indicate that the proposed solution is both effective and acceptable.
Physical Degradation of Toli Shad Gillnet: Breaking Strength, Elongation, and Fisheries Implications Mardiah, Ratu Sari; Park , Subong; Yurizal , Yurizal; Nugraha , Erick; Rasdam , Rasdam; Prasetyo, Ganang Dwi; Khikmawati, Liya Tri; Febriyanto , Fredi; Purwanto , Yuli; Isman, Khairudin
Jurnal Ilmiah Perikanan dan Kelautan Vol. 17 No. 3 (2025): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v17i3.74560

Abstract

Graphical Abstract   Highlight Research Synthetic nets, widely used in aquaculture and marine fishing, experience reduced performance over time due to environmental exposure. The study analyzes the effectiveness of Toli shad gillnets based on their technical age using statistical and experimental methods. A strong negative correlation exists between technical age and both breaking strength (r = -0.972) and elongation (r = -0.92). Toli shad gillnets perform optimally within 2 to 3 years of use, with effectiveness declining by the fourth year as indicated by scores of 40–59, suggesting adequate performance but the need for targeted improvements. Medium-term maintenance should be performed annually throughout the net’s service life, up to a maximum of 7 years, while replacement is recommended starting in the 4 year to mitigate performance degradation.     Abstract Synthetic nets have high elasticity and are widely used for both aquaculture and marine fishing. However, as their technical age increases, their performance declines due to wear, reduced breaking strength, and decreased elongation caused by continuous exposure to the marine environment. Monitoring the technical age of nets is crucial to maintaining the effectiveness of Toli shad gillnets, minimizing losses, and ensuring optimal catch yields. This study aims to examine the physical degradation of synthetic gillnets used in Toli shad (Tenualosa macrura) fisheries based on their technical age. This study utilized gillnets targeting toli shad (Tenualosa macrura), with varying technical ages (control net, 1-year, 2-year, and 3-year nets), all made from polyamide (PA) monofilament. The differences in net dimensions were attributed to variations in their service life. The method used is purposive sampling, analyzed using descriptive statistics, correlation analysis, a Completely Randomized Design (CRD), and effectiveness evaluation. The results show that the structure of Toli shad gillnets consists of mesh sizes of 77.82–99.60 mm, thread diameters of 0.34–0.53 mm, and knot heights of 1.52–2.28 mm. The relationship between technical age and breaking strength has a correlation coefficient (r) of -0.972, an R² of 0.94, and a regression equation of y = 9.85 - 1.31x. The LSD test indicates a significant difference in breaking strength across treatments. The correlation between technical age and elongation has an r-value of -0.92, an R² of 0.86, with the equation y = 20.11 - 0.34x. The LSD test shows that the control net has significantly different elongation compared to others, but nets aged 1, 2, and 3 years show no significant differences. The study concludes that Toli shad gillnets remain effective for up to 3–4 years, with an effectiveness value of ≥50%. The implications of this study contribute to the efficient management of fishing nets by informing maintenance and replacement strategies based on the technical age and mechanical degradation of the gear. These findings suggest the importance of integrating net lifespan into gear management to enhance catch performance and sustainability in small-scale fisheries.
Reduction of Raoultella ornithinolytica TN5 Biofilm using Hot Water and Nanochitosan Fitriani, Khofifah Fajar; Nugraheni , Prihati Sih; Putra, Masagus Muhammad Prima; Puspita, Indun Dewi
Jurnal Ilmiah Perikanan dan Kelautan Vol. 17 No. 3 (2025): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v17i3.74564

Abstract

Graphical Abstract   Highlight Research The biofilm formation of Raoultella ornithinolytica on a stainless steel surface was analyzed Longer duration of hot water immersion leading to a higher reduction of Raoultella ornithinolytica biofilm on stainless steel surface. Longer duration of nanochitosan exposure leading to a higher reduction of Raoultella ornithinolytica biofilm on stainless steel surface The combination treatment of hot water immersion and nanochitosan shows higher efficacy to reduce Raoultella ornithinolytica biofilm on stainless steel surface compare to sodium hypochlorite treatment.     Abstract The equipment surfaces in food processing industries have the potential to contaminate products. Bacteria on a surface are able to form a biofilm. This study aimed to determine the effect of a combination treatment using hot water immersion and nanochitosan on the reduction of R. ornithinolytica’s biofilm on stainless steel surfaces. R. ornithinolytica was applied to a stainless steel surface, incubated at 30oC for 48 hours, and tested for its reduction using hot water immersion treatment with different times. The best result from this treatment was when it was used in combination. The viability of cells was determined using a swab and the total plate count method. A scanning electron microscope was used for qualitative observations of biofilm formed on stainless steel before and after sanitation. The result showed that 10 minutes of hot water immersion resulted in significant R. ornithinolytica biofilm reduction compared to 5 minutes of treatment (p<0.05). Furthermore, the combination treatment of 10 minutes of hot water with 15 minutes of nanochitosan (0.1%) immersion showed the highest percent reduction of R. ornithinolytica biofilm (p<0.05). The ability of the combination treatment to eliminate R. ornithinolytica biofilms is equivalent to or even better than sodium hypochlorite treatment.
Evaluation of Fatty Acid Profile in Red Tilapia Fed Black Soldier Fly Larvae and Tofu Waste-Based Diets Purwanto, Ukhradiya Magharaniq Safira; Sari, Sintia Permata; Nabilla, Rahmah; Andrianto, Dimas; Safithri, Mega
Jurnal Ilmiah Perikanan dan Kelautan Vol. 17 No. 3 (2025): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v17i3.74569

Abstract

Graphical Abstract    Highlight Research Feed formulations based on black soldier fly (BSF) larvae and tofu waste meet the quality requirements based on the Indonesian National Standard Feed formulations based on black soldier fly (BSF) larvae and tofu waste improve fish growth performance comparable to commercial feed Feed formulations based on black soldier fly (BSF) larvae and tofu waste did not increase the level of cholesterol content in fish flesh Fish flesh with black soldier fly (BSF) larvae and tofu waste diet have higher total fatty acid content compared to commercial feed     Abstract Despite growing interest in sustainable aquaculture, studies on the combined use of Black Soldier Fly Larvae (BSFL) and tofu waste as alternative protein sources in tilapia diets, particularly their effects on fatty acid profiles, remain limited. This study evaluates the effects of fish feed formulated with BSFL and tofu waste on the growth performance, proximate composition, and fatty acid profile of red tilapia (Oreochromis niloticus). Experimental diets included: commercial feed, dried BSFL, and a combination of BSFL:tofu waste. Fish were reared for eight weeks under controlled conditions. Treatment with BSFL:tofu waste exhibited superior growth performance, with the highest weight gain (102.88%) and length gain (33.75%). Proximate analysis revealed significant variations across treatments, with a combination of BSFL:tofu waste achieving the highest caloric value (110.71 cal/g) and fat content (3.75%) while maintaining protein levels comparable to commercial feed. Fatty acid analysis showed a combination of BSFL:tofu waste enhanced total fatty acid content (77.92%), predominantly polyunsaturated fatty acids (PUFAs), increasing from 37.34% in commercial feed to 47.04%. Essential fatty acids, including DHA and linoleic acid, were elevated in a combination of BSFL:tofu waste, indicating improved nutritional quality. Cholesterol levels remained unaffected among treatments. These findings suggest that combining BSFL and tofu waste can enhance fish feed quality, optimize growth performance, and improve the nutritional value of red tilapia. Future research should explore refining feed formulations to maximize nutrient stability and sustainability for broader aquaculture applications.
Steroid Hormone Profile and Sperm Quality of Silver Pompano (Trachinotus blochii) Fed Tribullus terrestris Extract and Gonadotropin Hormone Azizah, Azizah; Sarida, Munti; Susanto , Gregorius Nugroho; Adiputra , Yudha Trinoegraha; Setyawan , Agus
Jurnal Ilmiah Perikanan dan Kelautan Vol. 17 No. 3 (2025): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v17i3.74581

Abstract

Graphical Abstract   Highlight Research 1. Hormonal approaches are needed for the maturation of the broodstock's gonads; 2. The use of gonad maturation stimulants, both hormonal and herbal, in the aquaculture sector has been widely used, where hormonal and phyto-biotic induction can enhance gonad maturation in fish. 3. The use of phyto-biotic, such as Tribulus terrestris, has been tested to enhance reproduction in fish. 4. Feeding Tribulus terrestris extract enhances the reproductive performance of male silver pompano broodstock by improving weight growth, testosterone levels, gonad maturation, and sperm volume.   Abstract Male broodstock of silver pompano often exhibit delayed gonadal development, which prolongs the broodstock maintenance period and increases production costs. To address this issue, dietary supplementation with bioactive compounds and hormonal inducers has been explored to stimulate reproductive maturation. Among these, plant-derived extracts such as Tribulus terrestris and exogenous hormones like human Chorionic Gonadotropin (hCG) are of interest due to their potential to enhance steroidogenesis and accelerate gonadal development. This study examined the impact of T. terrestris extract (ETT) and hCG on the steroid hormone profile, sperm quality, and gonadal histology of male silver pompano. Five treatment groups were established with varying ETT (mg/kg of diet) and hCG (IU/kg of body): T1 (0 + 0), T2 (50 + 0), T3 (250 + 0), T4 (50 + 1000), and T5 (250 + 500), each replicated eight times. Results revealed that ETT at 250 mg/kg (T3) significantly improved reproductive parameters, including absolute weight gain, gonadal development, and semen volume. Histological analyses further indicated advanced stages of gonadal maturation in treated groups, accompanied by increased plasma testosterone levels, which stimulated spermatogenesis and sperm cell formation. Optimal sperm quality—characterized by enhanced motility and seminal volume—was observed at the T3 dosage, although sperm density showed limited variation. These findings underscore the potential of T. terrestris extract as a practical dietary strategy to enhance reproductive efficiency in silver pompano aquaculture, contributing to improved productivity and sustainability. Further studies are recommended to refine dosages and ensure consistent outcomes across production systems.  
Uncovering Molluscs Diversity in Mandalika Coastal Through eDNA Metabarcoding Candri, Dining Aidil; Mursal Ghazali; Tri Wahyu Setyaningrum; Mardiati, Aina Ul; Muhammad Syach Maulad Ichfa
Jurnal Ilmiah Perikanan dan Kelautan Vol. 17 No. 3 (2025): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v17i3.73791

Abstract

Graphical Abstract   Highlight Research The environmental DNA (eDNA) method successfully identified four species of molluscs (Monetaria , M. annulus, M. obvelata, and Phyllaplysia sp.) and two family taxa (Strombidae and Cypraeidae) from the seagrass and coral reef ecosystems on the Mandalika coast. The species annulus, M. obvelata, and Phyllaplysia sp were detected in the coastal area of ​​Mandalika for the first time using the eDNA approach, although they had never been recorded observationally in this area before. The eDNA method is able to detect species that are difficult to observe directly, such as Phyllaplysia, which have never been reported in the coral reef ecosystem of Mandalika. This study emphasizes the urgency of sustainable coastal area management with an eDNA-based scientific approach to monitor diversity, detect rare species, and evaluate the impact of human activities on the ecosystem.     Abstract Molluscs are one of the main taxa in coastal ecosystems that play an important role in the food chain, bioindicators, and have high economic value. However, the limitations of conventional methods in detecting species that live hidden in complex ecosystems, such as seagrass and coral reefs, are a challenge in biodiversity monitoring. This study aimed to explore the diversity of mollusc species in the Mandalika coastal area using an eDNA metabarcoding approach. This study used the environmental DNA (eDNA) metabarcoding method to identify the diversity of molluscs in the coastal ecosystem of Mandalika, Central Lombok. The sites including Kuta Beach, Gerupuk Bay, and Aan Cape along the Mandalika coastal that contain both seagrass bed and coral reef ecosystems. Two samples were taken from each site in both the seagrass bed and coral reef ecosystems. Analysis of six water samples resulted in 99 ASVs and 116,611 final sequences, with 10 ASVs (50,960 sequences) identified as Mollusca taxa, all from the Gastropoda class. Four species were successfully identified, including Monetaria sp. M. obvelata, M. annulus and Phyllaplysia sp. that had not previously been reported through direct observation or conventional identification methods in Mandalika coastal area. Species diversity varied between locations and was influenced by environmental factors such as temperature, pH, salinity, phosphate, and anthropogenic pressure. These results show that eDNA metabarcoding is an effective tool in detecting mollusc species, even in hard-to-reach habitats, and support the urgency of scientific data-based mollusc conservation management.

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All Issue 2026: JIPK VOLUME 18 ISSUE 2 YEAR 2026 (JUNE 2026, ISSUE IN PROGRESS) 2026: IN PRESS ISSUE (JUST ACCEPTED MANUSCRIPT, 2026) Vol. 18 No. 1 (2026): JURNAL ILMIAH PERIKANAN DAN KELAUTAN Vol. 17 No. 3 (2025): JURNAL ILMIAH PERIKANAN DAN KELAUTAN Vol. 17 No. 2 (2025): JURNAL ILMIAH PERIKANAN DAN KELAUTAN Vol. 17 No. 1 (2025): JURNAL ILMIAH PERIKANAN DAN KELAUTAN Vol. 16 No. 2 (2024): JURNAL ILMIAH PERIKANAN DAN KELAUTAN Vol. 16 No. 1 (2024): JURNAL ILMIAH PERIKANAN DAN KELAUTAN Vol. 15 No. 2 (2023): JURNAL ILMIAH PERIKANAN DAN KELAUTAN Vol. 15 No. 1 (2023): JURNAL ILMIAH PERIKANAN DAN KELAUTAN Vol. 14 No. 2 (2022): JURNAL ILMIAH PERIKANAN DAN KELAUTAN Vol. 14 No. 1 (2022): JURNAL ILMIAH PERIKANAN DAN KELAUTAN Vol. 13 No. 2 (2021): JURNAL ILMIAH PERIKANAN DAN KELAUTAN Vol. 13 No. 1 (2021): JURNAL ILMIAH PERIKANAN DAN KELAUTAN Vol. 12 No. 2 (2020): JURNAL ILMIAH PERIKANAN DAN KELAUTAN Vol. 12 No. 1 (2020): JURNAL ILMIAH PERIKANAN DAN KELAUTAN Vol. 11 No. 2 (2019): JURNAL ILMIAH PERIKANAN DAN KELAUTAN Vol. 11 No. 1 (2019): JURNAL ILMIAH PERIKANAN DAN KELAUTAN Vol. 10 No. 2 (2018): Jurnal ilmiah perikanan dan kelautan Vol. 10 No. 1 (2018): Jurnal ilmiah perikanan dan kelautan Vol. 9 No. 2 (2017): Jurnal Ilmiah Perikanan dan Kelautan Vol. 9 No. 1 (2017): Jurnal Ilmiah Perikanan dan Kelautan Vol. 8 No. 2 (2016): JURNAL ILMIAH PERIKANAN DAN KELAUTAN Vol. 8 No. 1 (2016): JURNAL ILMIAH PERIKANAN DAN KELAUTAN Vol. 7 No. 2 (2015): JURNAL ILMIAH PERIKANAN DAN KELAUTAN Vol. 7 No. 1 (2015): JURNAL ILMIAH PERIKANAN DAN KELAUTAN Vol. 6 No. 2 (2014): JURNAL ILMIAH PERIKANAN DAN KELAUTAN Vol. 6 No. 1 (2014): JURNAL ILMIAH PERIKANAN DAN KELAUTAN Vol. 5 No. 2 (2013): JURNAL ILMIAH PERIKANAN DAN KELAUTAN Vol. 5 No. 1 (2013): JURNAL ILMIAH PERIKANAN DAN KELAUTAN Vol. 4 No. 2 (2012): JURNAL ILMIAH PERIKANAN DAN KELAUTAN Vol. 4 No. 1 (2012): JURNAL ILMIAH PERIKANAN DAN KELAUTAN Vol. 3 No. 2 (2011): JURNAL ILMIAH PERIKANAN DAN KELAUTAN Vol. 3 No. 1 (2011): JURNAL ILMIAH PERIKANAN DAN KELAUTAN Vol. 2 No. 2 (2010): JURNAL ILMIAH PERIKANAN DAN KELAUTAN Vol. 2 No. 1 (2010): JURNAL ILMIAH PERIKANAN DAN KELAUTAN Vol. 1 No. 2 (2009): JURNAL ILMIAH PERIKANAN DAN KELAUTAN Vol. 1 No. 1 (2009): JURNAL ILMIAH PERIKANAN DAN KELAUTAN More Issue