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Faculty of Marine and Fisheries Universitas Syiah Kuala Jalan Meureubo No. 1, Kopelma Darussalam Banda Aceh, 23111, Indonesia
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Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan
Published by Universitas Syiah Kuala
ISSN : 20897790     EISSN : 25026194     DOI : 10.13170/depik
Core Subject : Science, Education, Engineering,
Earth & Planetary Sciences Education Engineering
Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan is a peer review international journal, this journal is publishing high-quality articles in aquatic sciences and fisheries in general. The aim of the journal is to publish and disseminate the current or new findings of the research, and give a significant contribution to the development of fisheries and aquatic sciences in several topics, but not limited to: Fisheries (Aquaculture, Capture Fisheries, Fish Processing) Aquatic Ecology (Freshwater, Marine, and Brackishwater) Aquatic Biology (Fish, Mollusk, Crustacean, Plankton, Coral reefs) Oceanography
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Oseanografi
Articles 944 Documents
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The effect of lignosulfonate chemical stimulator to the metabolites of Euglena sp. Luthfiana, Dwi Hardianti; Karilanata, Khalid Erlangga; Maghfiroh, Khusnul Qonita; Kurnianto, Dedy; Amelia, Ria; Erfianti, Tia; Larasati, Ersi; Putri, Renata Adaranyssa Egistha; Suyono, Eko Agus
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 14, No 2 (2025): JUNE 2025
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.14.2.30804

Abstract

Euglena sp. contains several metabolites that play a role in various sectors, likely biofuels, food, feed, and pharmaceuticals. Multiple treatments are required to increase the content of Euglena sp.to support its use. In this study, a chemical stimulant in the form of lignosulfonate was added to Euglena sp. in order to increase its natural potency as measured by lipid, carbohydrate, protein, paramylon content, and biomass productivity. Lignosulfonate is a macromolecular polyelectrolyte and anionic surfactant that is unique and multifunctional. This lignosulfonate can act as an emulsifier, dispersing agent, binder, and stabilizer of lipids in Euglena sp. cells. In addition to the lignosulfonate chemical stimulator, it can affect the growth process of Euglena sp. so that it can produce good-quality cells. The method used was a Completely Randomized Factorial Design (CRD) with three treatments and three replications. The results obtained indicated that the addition of lignosulfonate was significantly changed the cell and protein density tests. Therefore, the optimal concentration of lignosulfonate can be used as an agent to increase the growth rate and metabolites of Euglena sp. significantly.Keywords:BiofuelEuglena sp.Growth rateslignosulfonateMetabolites
Banda Aceh mangrove vegetation structure in 2023 based on NDVI (Normalized Difference Vegetation Index) analysis Putriani, Musrina; Dharma, Wira; Siregar, Zuriana
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 14, No 2 (2025): JUNE 2025
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.14.2.42908

Abstract

Mangroves are coastal forest ecosystems found in tropical and subtropical regions. such as the city of Banda Aceh. Based on their habitat, mangroves are a type of wetland forest that can store large amounts of carbon. The purpose of this study is to determine the structure of mangrove vegetation in the city of Banda Aceh through NDVI analysis. The analysis method used was NDVI and sample observation using plots. The results of the analysis show that the vegetation structure is directly proportional to the NDVI value. Areas with high NDVI values are dominated by tree, while areas with low NDVI values are dominated by seedling.Keywords:MangroveVegetationNDVI
Molecular insights into the biodiversity of freshwater red macroalgae in Indonesia Aristya, Ganies Riza; Nugroho, Rifat Rizki Adi Nugroho; Chasani, Abdul Razaq
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 14, No 2 (2025): JUNE 2025
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.14.2.38211

Abstract

Many Asian countries, including Indonesia, have experienced negative effects from pollution brought on by industrialization and modernization, which have harmed freshwater ecosystems as well as natural habitats. Red macroalgaeand other creatures that depend on these ecosystems for their survival may suffer as a result, which could increase the strain on freshwater ecosystems and resources. Due to freshwater red macroalgaeare primary producers in their own ecosystems, they are essential to the cycling of nutrients and the preservation of water quality. The objective of this study is to evaluate freshwater red macroalgae in Indonesia utilizing various approaches particularly emphasis on DNA barcoding. As a result, molecular methods like DNA barcoding are employed to uncover hidden species and elucidate the evolutionary connections between different taxa, thereby exposing the diversity of red macroalgae. It is anticipated that the outcomes will yield data for further research.Keywords:DNA barcodeFreshwaterHidden speciesMolecularRed macroalgae
Reproductive biology of mackerel scad (Decapterus macarellus Cuvier, 1833) in The North Halmahera waters Restiangsih, Yoke Hany; Fauzi, Moh; Taufik, Muhammad; Kembaren, Duranta D; Lestari, Pratiwi; Yahya, Muhammad Fadli; Nuratmojo, Nuratmojo
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 14, No 2 (2025): JUNE 2025
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.14.2.42279

Abstract

Studying the biological reproduction of fish is important for determining the spawning season and providing several management options to protect the fisheries. The study conducted length and biology reproduction sampling of Mackerel scad (Decapterus macarellus) caught by mini purse seine landed in Tobelo coastal fishing port during 20152016. The total sample consisted of 1228 individuals, 526 males and 671 females with size distributions ranging from 12.50 to 29.90 cmFL. Results showed that there were 432 immature and 94 mature male fish and 582 immature and 89 mature female fish. The growth pattern for male fish is negative allometric (b3) while for females is isometric (b=3). The highest GSI value for male was recorded during May and November, while for females it was in May and October. Based on this result, the spawning season of mackerel scad in the North Halmahera waters is predicted to occur in March-May and August-October, by the first and second transition seasons. The study found that the length at first maturity (Lm) was 24.90 cmFL for male fish and 26.41 cmFL for female fish, the Lm bigger than Length at first capture (Lc) of 21.93 cmFL. This means the fish was caught before mature gonads and had a chance to spawn.Keywords:Mackerel scadSmall pelagic fishHalmahera watersGonadosomatic indexSpawning season
A review on optimizing fish growth using fermented animal by-products for sustainable aquaculture Shobihah, Hasna Nabila; Andriani, Yuli; Wiyatna, Muhamad Fatah; Iskandar, Iskandar; Zidni, Irfan; Rustama, Mia Miranti
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 14, No 2 (2025): JUNE 2025
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.14.2.43418

Abstract

Feed availability is a crucial factor in aquaculture, accounting for approximately 6070% of total production costs. High-quality feed is often expensive due to reliance on imported ingredients. To address this issue, animal-based organic waste presents a promising alternative, given its abundance, underutilization, and high nutritional value when properly processed. This review was conducted from November 2024 to January 2025 using a narrative literature review approach, synthesizing previous publications to identify research gaps and development opportunities. Literature was sourced from national and international scientific databases, including Scopus, ScienceDirect, SpringerLink, and ResearchGate. The study aimed to explore the production of fermented animal by-product meal and its application in aquafeed to enhance fish growth performance. Findings indicate that fermentation significantly improves the nutritional quality of animal waste. Several reviewed studies reported that incorporating fermented by-products such as fish offal, poultry feathers, and blood at inclusion levels of 2025% can improve the growth and survival rates of juvenile fish. Therefore, the optimal use of such ingredients is recommended to reduce feed costs and support the sustainability of aquaculture systems.Keywords:Alternative ingredientsFish wasteChicken Feather WasteBlood WasteFermentationFish feed
Investigation of environmental factors impact on fish catch in East Java waters Nurfitri, Suliskania; Putri, Ajeng Tiara; Putri, Mutiara Rachmat
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 14, No 2 (2025): JUNE 2025
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.14.2.44373

Abstract

This study explores the relationship between environmental parameters and fish catch rates for scad, skipjack, and yellowfin tuna in East Java waters from 2019 to 2022. The environmental factors considered include sea surface temperature (SST), chlorophyll-a concentration, and Ekman pumping velocity (EPV) as indicators of upwelling. SST and chlorophyll-a data were obtained from Aqua MODIS satellite observations, while wind and seawater density data for EPV calculations were sourced from ERA5 and SMOS-OI, respectively. Fish catch data were provided by the Department of Marine and Fisheries of East Java. Cross-correlation analysis revealed a negative correlation between SST and fish catch, with time lags of 2, 4, and 5 months for scad, skipjack, and yellowfin tuna, respectively. Chlorophyll-a concentration showed a positive correlation with fish catch, particularly for scad (0.6 with a one-month lag) and for skipjack and yellowfin tuna (0.62 with a four-month lag). Additionally, EPV exhibited a positive correlation (0.3 to 0.6) with fish catch. These findings emphasize the significance of SST and chlorophyll-a as indicators of fish population dynamics and offer valuable insights for fisheries management.Keywords:East Java WatersSea surface temperatureChlorophyll-aFishcatchUpwelling
Diversity of macroalgae in the intertidal zone of Iboih Beach, Sabang, Indonesia Suwarniati, Suwarniati; Ulfa, Maria; Zahara, Meutia; Fajriana, Nurul; Amiren, Muslim; Aini, Qurratu
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 14, No 2 (2025): JUNE 2025
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.14.2.45719

Abstract

The intertidal zone of Iboih Beach in Sukakarya District, Sabang, has significant macroalgae diversity with different substrate variations. This study examined the diversity, distribution, and ecological significance of macroalgae using the quadrat method with purposive sampling technique on three plots measuring 2 2 m (coral, sand, and rock substrates), each replicated three times. Measurements of environmental parameters including temperature (using a thermometer), salinity (refractometer), and depth (Secchi disk) were carried out prior to sampling to ensure that environmental conditions were recorded. The results showed Galaxaura rugosa as the dominant species (INP 63.22), followed by Halimeda opuntia (38.42) and Chaetomorpha crassa (35.27), which showed a preference for hard substrates rich in nutrients. In contrast, Caulerpa sp. had the lowest INP (9.33), indicating specific habitat adaptation. The Shannon-Wiener diversity index (H=1.57) was in the moderate category, with an average INP of 28.575 reflecting a diverse community occupying different ecological niches. The coral substrate supported the highest abundance due to its stability and nutrient availability. This finding confirms the crucial role of substrate characteristics in the structure of intertidal macroalgal communities.Keywords:DiversityMacroalgaeIntertidal zoneSubstrateIboih Beach
Fish biodiversity and substrate composition on coral reef ecosystem at Penimbangan, Buleleng Regency, Bali Safitri, Diah Ayu; Andriyono, Sapto; Mukti, Akhmad Taufiq; van Keulen, Mike
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 14, No 2 (2025): JUNE 2025
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.14.2.36210

Abstract

The Penimbangan is one of the potential locations for underwater tourism in the Regency of Buleleng, with a unique dive spot. Planning and sustainable coastal development are essential for the continuity of the ecosystem, the sea, and the economy. Fish and coral studies in Penimbangan, District Buleleng, occurred from December 2022 to February 2023. Location observation shared four sites of data retrieval. The determination sites study uses purposive sampling based on the spread of coral naturally. Data was collected by Underwater Photo Transect (UPT) for coral and Underwater Visual Census (UVC) for fish. Transect area coral 50m long with quadratic transect (58cm x 44cm), and classified categories using CPCe software. Transect area fish of 350 m2 (length 70 m, limit right and left 2.5 m), identified fish to species level. The most studied habitat associations in coral reefs are coral (HC) and fish in coral assemblages. Percentage composition substrate basis in Penimbangan, namely dead coral with algae (106.74), coral (90.27), and sand (70). Lifeform coral is found in as many as ten types; the most are CM (39.00), CE (23.20), and ACS (10.07). A total of 17 families with 70 reef fish species were recorded in this study. The family with the most species is Pomacentridae (25), followed by Chaetodontidae (9) and Labridae (8). The composition of fish will vary according to the type of habitat.Keywords:FishBiodiversitySubstrateCoral ReefEcosystemBali
Assessment of shark catches landed at PPI Ujung Serangga, Southwest Aceh Zulurrahmi, Nur; Fajri, Ilham; Aprilla, Ratna Mutia; Herman, Herman; Febriyanti, Rada; Putri, Riska Diajeng
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 14, No 2 (2025): JUNE 2025
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.14.2.46214

Abstract

This study aimed to assess shark catches at PPI Ujung Serangga, Southwest Aceh, focusing on species composition, size and conservation status. Data were collected through field surveys and direct measurements of sharks landed by fishers. Results showed that bottom longlines were the most widely used fishing gear and produced the highest shark catches. A total of 643 individual sharks from 16 species were identified, with the family Carcharhinidae dominating the catch. Most of the sharks caught were below gonad length (Lm), indicating the potential for juvenile shark fishing. The conservation status of sharks evaluated based on IUCN showed that most species were categorized as Near Threatened (NT) and Vulnerable (VU), with some species categorized as Critically Endangered (CR) and Endangered (EN). Almost all identified shark species are listed in CITES Appendix II. This research highlights the importance of sustainable shark fisheries management to maintain populations and biodiversity in the Southwest Aceh region.Keywords:SharkConservation StatusCITESSouthwest Aceh
Influence of the environmental challenges on the resilience of purse seine fisherman in Kutaraja oceanic fishing port, Banda Aceh Syahputra, Jasnur; Wisudo, Sugeng Hari; Wiyono, Eko Sri; Mustaruddin, Mustaruddin
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 14, No 2 (2025): JUNE 2025
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.14.2.46231

Abstract

Purse seine fishermen in Kutaraja Oceanic Fishing Port, Banda Aceh, face various socio-economic and environmental challenges that affect the sustainability of their fishing activities. This study aims to identify and analyze the factors influencing the resilience of these fishermen in facing such challenges. A quantitative approach was employed through a survey method, and data were collected from 100 purse seine fishermen using structured questionnaires. The data were analyzed using descriptive and inferential statistics with multiple linear regression models. The findings show that income and social support significantly affect fishermens resilience, with p-values of 0.002 and 0.015 (p 0.05), respectively. Meanwhile, education and environmental conditions have less influence, indicated by p-values of 0.089 and 0.122 (p 0.05). The coefficient of determination (R) is 0.68, suggesting that 68% of the variance in fishermens resilience can be explained by these four variables. The practical implications of this research highlight the importance of empowering fishermen through enhanced access to education, skills training, and social infrastructure development to strengthen their resilience in dealing with environmental and economic changes in the fisheries sector. The study concludes that economic and social support systems are key drivers in improving fishermens adaptive capacity.Keywords:ResiliencePurse seineFishermenEnvironmentalBanda Aceh

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