DEPIK Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan
Not a member yet
571 research outputs found
Sort by
Survival rate and growth performance of tilapia (Oreochromis niloticus) exposed in polyvinyl chloride microplastics
Full text linkPlastic is one of the materials most widely used by humans. The more plastic that is used, the more plastic waste is released into environment and will polute water areas in various sizes, both macroplastics and microplastics. Microplastic are classified as plastic particles whose diameter is less than 5 millimeters. One type of microplastic that has an adverse impact on the life of aquatic organisms is polyvinyl chloride (PVC). The aim of this research was to determine the effect of PVC microplastic exposure on the survival rate and growth performance of tilapia, Oreochromis niloticus. This study was conducted in a completely randomized design (CRD) consisting of four treatments with three replications. The treatments were as follows: MP0 = No addition of microplastics (control); MP1 = Addition of 5 mg/L microplastics; MP2 = Addition of 15 mg/L microplastics; MP3 = Addition of 20 mg/L microplastics. The results showed that exposure to polyvinyl chloride microplastics on the survival rate and growth performance of tilapia through water made a real difference to Survival Rate (SR), absolute weight growth, absolute length growth, Specific Growth Rate (SGR), Feed Convension Ratio (FCR) and the abundance of polyvinyl chloride microplastics in fish gut.Keywords:MicroplasticPolyvinyl chlorideTilapiaSurvival rateGrowth performanc
Mapping the distribution of stingray fishing grounds in the south west waters of Aceh during the east season
Full text linkOne of the regions contributing to stingray fisheries production in Indonesia is Aceh province. The condition of stingray fisheries in Indonesia is currently facing challenges as the population is decreasing while the demand for stingray fishery resources domestically and abroad continues to increase. This condition certainly requires integrated stingray fisheries management efforts so that the rays population, especially in the waters of Aceh province, remains sustainable. This study aimed to determine the number, type, and distribution of stingray fishing grounds landed at the Ujong Baroh Fish Landing Base (PPI). The research was carried out in 2 stages; the first stage was to conduct a field survey by following fishermen directly to the sea and using interview questionnaires, and the second stage was to take satellite image data of sea depth, fishing location, and fishing distance and then make a map of stingray fishing ground distribution landed at Ujong Baroh Fish Landing Base, West Aceh. The number of stingray catches landed at Ujong Baroh Fish Landing Base during the study was 428, consisting of 11 species: 369 Maculabatis macrura, 42 Myliobatis tobijei, 14 Rhynchobatus australiae, 28 Dasyatis kuhlii, 8 Pateobatis uarnacoides, 7 Gymnura zonura, 6 Himantura leoparda, 2 Rhina ancylostoma, 2 Rhinobatos borneensis, 1 Aetobatus narinari, and 1 Taeniuriops meyeni. The results of the mapping analysis showed 18 distribution points of stingray fishing grounds and 4 fishing locations that obtained stingray catches, namely at the coordinates of 338.136'N and 9629.056'E, 42.144'N and 962.431'E, 416.599'N and 9532.000'E, 334.51472'N and 9625.80414'E.Keywords:MappingFishing GroundStingrayEastern Seaso
Exploitation rates and oceanographic characteristics of anchovy fishing grounds in FMA-572 West Sumatra
Full text linkAnchovy is one of potential commodities widely found and caught by fishermen in FMA-572 West Sumatra. Examining its exploitation rate is a part of taking control and monitor toward the fishing activities to avoid overfishing possibility. This recent study aims to calculate exploitation rate and oceanographic characteristics of anchovy fishing grounds. The data was collected from Bungus Oceanic Fishing Port, West Sumatra in 2018-2022. Meanwhile, sea surface temperature and chlorophyll data were obtained from https://marine.copernicus.eu/ and https://oceancolor.gsfc.nasa.gov 2018-2022, respectively. The results showed that the exploitation rate of anchovies in 2020 and 2022 has exceeded maximum sustainable yield categorized as overexploitation with a percentage of 130.44% and 112.84%. Anchovy catches are significantly influenced by oceanographic factors with F value 0.00000115 ( 0.05). An increase in CPUE value is align with chlorophyll increase and in contrary to sea surface temperature. The findings are expected to give an overview related to anchovy fishing activities implementation and become an input for fisheries governance that lead to sustainable fisheries management.Keywords:FMA-572MSYOverfishingSustainable fisheriesStolephorus s
Strategic approaches to sustainable fisheries management in west aceh district: integrating the code of conduct for responsible fisheries
Full text linkAceh is a province located in the western part of Indonesia, and most of its region is a coastal area that faces rapid population growth, which puts pressure on sectors like fisheries and marine resources. One of those is the West Aceh District the location of this research. Capture fisheries represent a crucial economic sector for the livelihoods of many communities, provided it is well-managed. One of the important factors contributing to the decline in fish populations is the use of environmentally harmful fishing gear. This paper aims to determine a strategy for environmentally- friendly capture fisheries management based on the code of conduct for responsible fisheries in West Aceh District, which is crucial for protecting aquatic habitat sustainability and future fish stock populations. A descriptive method combined with a survey was conducted during the research and SWOT was used as a data analysis method. The result is several important measures should be implemented in Aceh Barat District based on the code of conduct for responsible fisheries, from providing enough information and training for fishermen to enhance their knowledge and skills on sustainable fisheries management, to constructing representative fishing ports is also necessary to support efficient and environmentally friendly fishing activities, lastly, maximising the monitoring of fishing gear usage that meets the environmental standards and strengthening the law enforcement.Keywords:Strategic approachesSustainable fisheriesCCRFWest AcehMeulabo
Effectiveness of multiherbal leaf extract for the treatment of Oreochromis niloticus infected with pathogens
Full text linkThe many herbal plants in Indonesia that contain antimicrobial substances such as Calotropis gigantea, Moringa oleifera and Cassia alata L. leaves are attractive and have the potential to be used to prevent and treat bacterial diseases in fish. This study aims to determine the effectiveness of administering a combination of multi-herbal ingredients, namely M. oleivera, C. gigantea and C. alata L. leaves in the treatment of O. niloticus tilapia infected with the pathogenic bacteria S. agalactiae. The experimental design used a completely randomized design with 6 treatment levels and 3 replications, namely treatment A (Fish that were not infected with S. agalactiae), B (Fish infected with S. agalactiae), C (Fish infected with S. agalactiae + soaked in thistle leaf extract 800 ppm+ Moringa leaf extract 1000 ppm)), D (Fish infected with S. agalactiae + soaked in C. gigantea leaf extract 800 ppm + C. allata leaf extract 10 ppm), E (Fish infected with S. agalactiae +soaked in Moringa leaf extract 1000 ppm + C. allata leaf extract 10 ppm) and F (Moringa leaf extract 1000 ppm+C. gigantea leaf extract 800 ppm + C. allata leaf extract 10 ppm). The results showed that the combination of M. oleivera, C. gigantea and C. alata L. extracts had a significant effect (P0.05) on the survival rate ofO. niloticus. Treatment (E), combination of M. oleivera leaf extract 1000 ppm + C. alata L leaf extract 10 ppm, showed the fastest healing of the body and the highest survival rate of tilapia, namely 80%.Keywords:Multi herbal leavesPatoghenImunnit
Effects of dietary supplementation with 17-estradiol on the Steroid Hormone Levels, Gonadosomatic Index, and Gonadal Histology of Female Silver Pompano (Trachinotus blochii) Broodstock
Full text linkSilver pompano (Trachinotus blochii) is a mariculture commodity with fast growth characteristics and easy adaptation to the environment. However, the production of its seeds is hindered by the maturation of the parent's gonads out-side the spawning season. Hormonal approaches are needed for the maturation of the parent's gonads. The aim of this study is to investigate the level of steroid hormones, gonadosomatic index, and gonad histology in female silver pompano (Trachinotus blochii) broodstock after dietary supplementation with 17-estradiol. This research is crucial for the advancement of effective and efficient techniques for rearing this fish. The study used a completely randomized design (CRD) consisting of three different 17estradiol concentrations (0 mg/kg (E1), 30 mg/kg (E2), and 60 mg/kg (E3) fed to female silver pompano broodstock for 30 days, beginning at initial feeding, each with eight individual replicates. Absolute body weight growth, steroid hormone levels, gonadal maturation index, gonadal histology, fecundity, and egg diameter of female silver pompano broodstock were all examined in this study. The incorporation of 17-estradiol hormone into the sustenance amplifies the reproductive capabilities of the female silver pompano broodstock. The inclusion of 17-estradiol hormone in the diet renders the most elevated values regarding fecundity and egg diameter in the female silver pompano broodstock. Histological examinations expose that the development of the gonads in the female broodstock treated with 17-estradiol hormone progresses towards maturation. The inclusion of 17- estradiol hormone in the diet at doses of 20 and 60 mg/kg feed yields the highest values in terms of fecundity and egg diameter in female silver pompano broodstock.Keywords:17-estradiolGonadal histologyGonadosomatic indexSteroid hormoneSilver pompan
Assessing the quality of mangrove ecosystem as breeding sites organisms in the coastal area
Full text linkMangrove ecosystem is an ecosystem that supports people's lives and the biota that live in it. Globally, mangrove ecosystems are recognized as productive ecosystems in coastal areas. Mangrove wetlands have an important function of protecting coastal ecology, buffering salinity, breeding grounds for organisms and transporting nutrients. Research on the assessment of the quality of mangrove ecosystems in Syiah Kuala District, Banda Aceh City was carried out with the aim of studying the presence of mangrove species, plankton species, hydrological factors of mangrove ecosystems and analyzing the quality of mangrove ecosystems as breeding grounds for organisms based on hydrological factor values. The method used in this study was the line transect method and the research technique was carried out by means of purposive sampling. Data analysis was calculated using the Shanon-Wiener Species Diversity Index () and PCA (Principal Component Analysis) analysis. Identification results showed a low mangrove species diversity index with a value of = 1.924, a plankton species diversity index of = 2.614 belonging to moderate community stability, a hydrological index covering temperatures ranging from 28.2 to 29.8 C, pH 7.1 -7.4, DO 2.9-4.1 mg/L, salinity 27-20.9 /, brightness 30-68.5 Cd, depth 88.5-105 cm. Water quality parameters are in good condition. PCA analysis showed a correlation between the distribution of mangrove species and parameters of salinity, pH, DO, temperature, depth and brightness.Keywords:MangrovesBreeding SiteHydrologyPlanktonCoastal Are
First report of baby crab molecular identification from the North Coast of Cirebon, Indonesia
Full text linkBaby crab consumption has become a growing trend in snack markets across Asia, with rising popularity in at least five countries. Cirebon, situated on the coast of West Java, is a region experiencing particularly high demand for baby crab commodities, notably the locally known "kroyo" crab. However, without adequate information on this species, its future stock sustainability may be compromised. Indonesian regulations governing high-value Crustacea commodities, outlined in Ministry of Marine Affairs and Fisheries Regulation Number 16 of 2022, include lobster (Panulirus spp.), mangrove crab (Scylla spp.), and blue swimming crab (Portunus spp.). This study employs both morphological and molecular analyses, utilizing DNA barcoding techniques. Male (AMJ) and female (AMB) crabs were collected in February 2023 from Gebang Waters, Cirebon, Indonesia. Morphological identification followed guidelines established by the Food and Agriculture Organization (FAO) for crabs, while molecular identification utilized the Cytochrome Oxidase I (COI) gene. Morphological features such as carapace characteristics, front-orbital border, and cheliped spine morphology categorize the specimens under the genus Charybdis. Specifically, the presence of two spines in the cheliped indicates classification as Charybdis anisodon, a conclusion supported by molecular analysis revealing a 98.9298.96% similarity with C. anisodon. Further analysis of the stock of this crab species is necessary to enhance awareness of its exploitation and inform sustainable management practices.Keywords:Baby crabDNA barcodingFisheries managementIdentificationMorphologica
Grain size properties of estuary sediment from Aceh Jaya, Aceh
Full text linkThis study aimed to determine the sediment grain size distribution in four estuary locations in Aceh Jaya (Kuta Tuha, Lhok Geulumpang, Krueng No, Keude Unga). These findings will contribute to our understanding of sediment dynamics in estuarine environments and inform management strategies for these critical coastal habitats. The methods used in this study, such as mean, sorting, skewness, and kurtosis, and determination of sediment textural with ternary plot, were used to determine the sediment grain size distribution. In Addition, it will examine the relationship between sediment grain size composition and spatial distance to mouth bar using the Spearman correlation. Composition sediment at all locations dominated by fine sand. Grain size variations (26.735 198.709 m) show that at all locations mainly consists of very fine sand whereas at Kuta Tuha combination of fine sand and medium sand. The variations of sorting (1.193 2.59), skewness (-0.625 0.876) and kurtosis (0.46 6.883) indicate moderately sorted, very coarse skewed, and very platykurtic sediments. Textural sediment classified as sand, silty sand, and very slightly silty sand. We also found positive correlation between spatial distance from mouth bar and sediment composition. These findings will contribute to our understanding of sediment dynamics in estuarine environments and inform management strategies.Keywords:Sediment grain distributionTextural of sedimentAceh Jaya EstuarySortingSkewnes
Mapping West Java Northern waters quality using sea water quality standards
Full text linkPoor water quality caused by the influence of activities on land and sea can disrupt the ecosystem and the existence of fish resources in coastal areas. Damage to fish habitat impacts fishing areas, resulting in a decrease in fishermens catches. Fish resources will move further away from the coast, resulting in a narrower utilization of sea space for small fishermen and leading to conflicts. Thus, this study aims to analyze the quality of the aquatic environment and map the pollution degradation in the northern waters of West Java Province. The survey method was used in this study. The types of water quality data measured were water clarity, sea surface temperature, salinity, light attenuation coefficient, total suspended solids, and chlorophyll-a. In-situ seawater quality measurements in coastal waters were carried out at 30 points. In-situ water quality data was compared with remote sensing image data. Water quality parameter data was analyzed descriptively by comparing the results obtained with seawater quality standards for marine biota based on the Decree of the Minister of Environment No. 51 of 2004 concerning Seawater Quality Standards. The results showed that the light attenuation coefficient and salinity parameter had an average that did not comply with the seawater quality standards for biota. The parameters of chlorophyll-a, brightness, suspended solids load, and sea surface temperature were still within the threshold of seawater quality standards for biota life (good condition). The environmental conditions of the northern waters of West Java Province are classified as good, were around 3,261.703 km2, while the lightly polluted area was around 3,043.452 km2. The northern waters of West Java Province, classified as lightly polluted, were concentrated in two locations, the northern waters of Bekasi, and Indramayu.Keywords:Quality standardsDegradationWest JawaWater qualityMappin