DEPIK Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan
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Water quality assessment of Bone River using STORET method
Full text linkActivities around Bone River, one of the largest rivers in Gorontalo Province, include agriculture, settlement, gold mining, sand excavation, industry, and illegal logging. This research aimed to report the water quality status of Bone River using the STORET method as an index commonly used for measuring pollution levels in a water body, which the Indonesian government regulates, as stated in the Decree of the Minister of Environment, No. 115, 2003. This work involved data from 2021-2023 along the upstream to downstream of the river. There were 12 water quality parameters measured: temperature, TSS, DO, pH, COD, BOD, nitrate, phosphate, ammonia, and the heavy metals (Pb, Cd, and Hg) concentration. This study revealed that parameters met water quality standards for class I and class II: temperature, pH, DO, Pb, and Cd. The index scores ranged from -96 to 0. The upstream area was categorized as good, and the midstream to downstream was recognized as heavily polluted. This pollution level is dominated by organic waste from agricultural and domestic household activities. The concentration value consistently exceeds the quality standard in all data from St 5 to St 12. These two parameters are enough to significantly cause worsening water quality based on the STORET with a total score contribution of -40. BOD and COD parameters contribute the most to the river pollution level.Keywords:Water qualityPollutionSTORETBone Rive
Effectiveness of kepok banana stem extract (Musa Acuminata) on the immune response of catfish (Clarias gariepinus) infected with Aeromonas hydrophila
Full text linkCatfish have high economic value, fast growth, and are easy to cultivate. This is the reason why catfish cultivation is increasing. However, there are still obstacles in the cultivation process, namely the threat of disease, one of which is the Motile Aeromonas Septicaemia (MAS) disease caused by Aeromonas hydrophila bacteria. The countermeasure can be done by using active compounds found in plants, including banana stems. This study aimed to determine the effectiveness of giving banana stem extract to carp culture media and treating A. hydrophila disease. This research used an experiment with a completely randomized design. The treatments tested were the addition of banana stem extract at a dose of 5% (treatment A), 10% (treatment B), 15% (treatment C), and antibiotics (treatment K-), and without extract treatment (treatment K+). Each treatment was repeated three times. The results showed that the administration of banana stem extract significantly affected the fish's erythrocytes, leukocytes, and blood glucose. Leukocyte differential observation showed that kepok banana stem extract had a significant effect on eosinophils, lymphocytes, and neutrophils but no significant effect on monocytes. In analyzing fish blood, the optimal values were 7.640.190a cells/mm3 for leukocytes, 3.600.116d cells/mm3 for erythrocytes, 656.028b mg/dl for glucose, 74.670.577d% for lymphocytes, 5.670.577a% for neutrophils, and 00a% for eosinophils. The results indicate that treatment B with 10% kepok banana stem extract was the most effective in administering the extract to catfish infected with A. hydrophila bacteria.Keywords:Dumbo catfishLeukocytesErythrocytesGlucoseMusa AcuminataAeromonas hydrophil
Water Quality of a Tributary of Siak River and Reservoir in Pekanbaru City, Riau Province, Using the CCME-WQI
Full text linkThis research was conducted on one of the Siak River tributaries that crosses the urban area in Pekanbaru, namely the Pengambang River. The Pengambang River flow is dammed to become a reservoir; one of its functions is as a source of raw drinking water. Increased activity along rivers and reservoirs certainly has an impact on water quality. The research was carried out in May-October 2023. Water sampling was taken at 3 points each along the river flow and in the Reservoir. The physicochemical water quality parameters measured include temperature, TSS, BOD, COD, DO, pH, TP, Nitrate, and Total coliforms for rivers and reservoirs, while Chorofil-a only for reservoirs. Water quality was evaluated using CCME-WQI, and the results of water quality evaluation according to CCME-WQI in the Pengambang River at all sampling stations could have been bad to marginal. At the same time, in the Reservoir, it was marginal. The CCME_WQI Index value in rivers ranges 42.33 to 54.97, while in reservoirs, it is higher 49-56, it indicated water quality in reservoir better than river. Parameters influencing water quality in rivers and reservoirs, especially TC and BOD come from household waste cage fish cultivation
Different effects of swamp probiotics application frequency as a biofloc-forming agent on the production of catfish (Clarias gariepinus)
Full text linkCatfish (Clarias gariepinus) that are reared with probiotics as biofloc-forming agent is thought to increase the fish production. Applying swamp probiotics to the water media has never been studied to ensure the flocks' availability in the rearing media. This study aimed to determine the appropriate frequency of probiotics application collected from swamps for biofloc formation to improve the catfish production. This study used a completely randomized design with two treatments and three replications. The treatments were composed of different application frequency of swamp probiotics: (P1) once in 42 days of rearing and (P2) twice in 42 days of rearing. Data on flock volume, total bacterial colonies, absolute growth rate, feed efficiency, survival rate, and water quality were analyzed by T-test with a 95% confidence level. Meanwhile, the flock composition data were analyzed descriptively. The results showed that P2 obtained the best treatment with a floc volume of 68.33 10.41 mL/L, absolute length growth of 8.18 1.03 cm, absolute weight growth of 19.30 3.12 g, feed efficiency of 135.24 7.98%, survival rate of 89.33 6.21%, biomass production of 24639.50 1344.51 g, temperature of 28.85-29.59C, pH of 7.27-7.42, dissolved oxygen (DO) of 3.91-5.72 mg/L, ammonia of 0.45-1.15 mg/L, and total dissolved solids (TDS) of 717.33-885.50 mg/L. Therefore, swamp probiotics should be applied to catfish culture media twice for 42 days of rearing or once every 21 days.Keywords:BioflocCatfishProbiotics from swam
Therapy hormone PMSG (Oodev) through feed on the reproductive performance of Bileh fish (Rasbora maninjau Lumbantobing, 2014)
Full text linkEfforts to cultivate bileh fish (Rasbora maninjau) experience obstacles in providing seeds due to controlled reproduction in aquaculture containers is still difficult to do. This is due to the slow maturation of fish gonads, which takes a long time. Internal factors, including the hormonal system, influence the reproductive cycle and maturation of fish gonads. This study aims to determine the effect of PMSG (Oodev) hormone administration through feed on the reproductive performance of bileh fish. Experimental research method with CRD experimental design (completely randomized design). The experiment consisted of 4 treatments (P) with three replications. The treatments were PMSG hormone (Oodev) with different doses, namely 0 (P1), 0.5 (P2), 1 (P3), and 2 ml/kg feed (P4). The research phase included the preparation of containers and fish, preparing hormones and feed, rearing, and data collection. Parameters taken and evaluated include gonadosomatic index (GSI), hepatosomatic index (HSI), estradiol concentration, fecundity, and egg diameter. Data were processed and analyzed using statistics (Anova). The results showed that the administration of PMSG hormone (Oodev) through feed had a significant effect on GSI, HSI, estradiol concentration, fecundity, and egg diameter (P0.05). The best treatment was P3 (1 ml/kg) with a GSI value of 8.25%, HSI of 0.41%, estradiol level of 22.46pg/mL, fecundity of 3207 eggs, and egg diameter of 0.85mm.Keywords:PMSGOodevPerformanceReproductionBileh fis
Intensity and prevalence of ectoparasites in whiteleg shrimp Litopenaeus vannamei and mud crab Scylla serrata harvested from Aceh waters Indonesia
Full text linkEctoparasite infections are a common problem in small-scale aquaculture, exerting a substantial influence on fishery production. In the context of Indonesia, the two prevalent fishery commodities are whiteleg shrimpLitopenaeus vannameiiand mud crabScylla serrata. These species are extensively cultured within Aceh province, using traditional and semi-intensive aquaculture ponds and there are no reports on ectoparasites in these two species of crustaceans. Therefore, this study aimed to analyze the intensity and prevalence of ectoparasites in mud crab and whiteleg shrimp from Aceh between August to December 2022. Mud crab samples were collected from three locations, namely Langsa City, East Aceh, and North Aceh districts, while whiteleg shrimp samples were sampled from coastal ponds in Banda Aceh, Aceh Besar, and Aceh Jaya districts. The samples were collected over five months, and a total of 300 for each species were examined microscopically by scraping the swimming legs body, and gills. Furthermore, macroscopic-sized and microscopic-sized ectoparasites were observed using stereo and binocular microscopes, respectively. The results showed that five species of ectoparasites were recorded during the study, namely Octolasmis sp., Vorticella sp., Epistylis sp., Oodinium sp., and Zoothamnium sp. Mud crab exhibited infestations of Octolasmis sp., Vorticella sp., Epistylis sp., and Oodinium sp., while whiteleg shrimp were infested byVorticellasp.,Epistylissp., andOodiniumsp. In this study, the highest intensity for crab and shrimp was recorded inOctolasmissp. and Epistylissp., in November and September, respectively. The gills showed higher intensity compared to other infested organs and based on sample origin, crab and shrimp from Langsa and Banda Aceh Cities had higher results compared to other locations.The prevalence of ectoparasites exhibited a high value, reaching 100%, showing that crustacean samples were infested by ectoparasites. Therefore, the intensity of ectoparasite was varied according to sample of origin, time of sampling and infested organs. The samples of both crab and whiteleg shrimp from all locations consistently exhibited ectoparasite infestations throughout the entire study period.Keywords:Octolasmis sp.Vorticella sp.Epistylis sp.Oodinium sp.Zoothamnium sp
Seaweed and its antioxidant content at Batu Layar beach, Senggigi, West Lombok Regency
Full text linkSeaweed is macro algae that it one of export commodity at Indonesia. In addition to having economic value, macroalgae also have an important role in aquatic ecosystems. macroalgae play a role as primary producers because of their ability to photosynthesize, produce organic matter, and oxygen in the aquatic environment. Waters on Lombok Island that are overgrown with seaweed include Batu Layar beach. Batu Layar sub-district is part of the tourism area located in the coastal area. Batu Layar sub-district includes a cultivation area consisting of a variety of land uses ranging from agriculture, livestock, fishing and so on. This study aimed to analyze the diversity of seaweed species in the coastal waters of Batulayar, Senggigi, West Lombok Regency along with antioxidant and chlorophyll-a content. The research was conducted in November 2023 in the waters of Batu Layar, Senggigi, West Lombok Regency. The research methods used in this study were survey methods and method explanation of antioxidant content and chlorophyll was carried out in the laboratory, by taking random samples based on the boundaries of the predetermined area as many as 4 stations. The result of this research are identified species of seaweed including Sargassum sp., Padina, Caulerpa, Galaxaura, Ulva, Gelidium, Acanthophora, Iaxaura, Halimeda, Boergesenia forbesii, Corallina, and Turbinaria. Padina antioxidant levels reached 81,31% and chlorophyll 14,35 mg/l. It can be concluded that there are 12 types of seaweed that grow wild consisting of four species each of green, brown, and red alga. Padina has the highest antioxidant content of 81,31%.Keywords:AquacultureAntioxidantChlorophyllSeaweedSargassum
Prevalence and intensity of ectoparasites attacked goonch (Bagarius yarelli) captured from Perjaya Dam, Komering River, South Sumatra
Full text linkGoonch (Bagarius yarelli) is one of the local fish species affected by dynamic changes due to activities along Perjaya Dam. The first component in conducting the cultivation of local fish is domestication The main problem in domestication is the adaptation of wild fish to the controlled environment. Another aspect that needs to concern in domestication is the defense of domesticated species from several pathogens, especially parasites because most of wild fish captured from natural habitats are attacked by several parasites. This study aimed to determine the prevalence and intensity of ectoparasites attacked goonch captured from Perjaya Dam. The sampling method used was purposive sampling method and followed by laboratory examination. A total number of 90 goonch were collected using fishing rods and gillnets with an aid from local fishermen during this study. Ectoparasites were examined on several external organs including skin or scales, fins, and gills. Ectoparasites found during the sample examination were recorded for further calculation of ectoparasites types, prevalence, and intensity. The measurement of water quality parameters was performed after sample collection. Water quality parameters measured consisted of temperature, pH, dissolved oxygen, ammonia, and transparency. Goonch captured from Perjaya Dam were infested by Lernaea sp. and Gyrodactylus sp. through single infestation and with the same prevalence level (1.11%). Lernaea sp. showed a higher intensity (52 ind/fish) on goonch than that of Gyrodactylus sp. (1 ind/fish). Almost all water quality parameter in sampling site, including temperature, pH, and dissolved oxygen, were in normal ranges to support the live of freshwater fish.Keywords:EctoparasitesGoonchGyrodactylus sp.Lernaea sp.Prevalenc
Carbon emissions analysis for tuna transportation from Samudera Kutaraja fishing port
Full text linkThe tuna fishing industry significantly contributes to greenhouse gas (GHG) emissions primarily through fuel oil usage. This study investigates the environmental impact of tuna transportation, focusing on emissions from fishing vessels and vehicles. Carbon footprint calculations for fishing vessels utilize the IPCC, 2006 formula as referenced in KLH, 2012. Smaller purse seiners (10-20 GT) emit 2.88 kg CO2per trip per kilogram of tuna, while those (20-30 GT) in PPS Kutaraja emit 3.58 kg CO2. Larger purse seiners exhibit higher emission rates: 7.3 kg CO2 (20-30 GT), 9.9 kg CO2 (30-40 GT), 8.6 kg CO2 (40-50 GT), and 8.4 kg CO2 (50-60 GT) per trip per kilogram of tuna. Vehicle emissions for tuna transport vary, with the Honda Blade FI 125 emitting 0.00625 kg CO2, Supra X 125 emitting 0.00450 kg CO2, Viar Tiga Roda emitting 0.00458 kg CO2, Revo Fit emitting 0.0007 kg CO2, Jupiter emitting 0.00063 kg CO2, and Vega ZR Yamaha emitting 0.0006 kg CO2 per kilogram of tuna.Keywords:Carbon FootprintEmissionFsihing VesselsGreen TransportationsSupply ChainFishing Activtie
Population dynamics of Parrotfish (Scarus rivulatus) in Seribu Islands Waters
Full text linkParrotfish capture fisheries production in the Seribu Islands Waters is quite high. This study aims to determine several aspects related to parrotfish (S. rivulatus) population dynamics in the Seribu Islands Waters. This research was conducted for 12 months, starting from January to December 2022. The results of the analysis of the growth coefficient of male parrotfish are K=0.54 year-1, while females' growth coefficient is K=0.75 year-1. Growth parameters from the von Bertalanffy equation, for males Lt=312.4[1-exp-0.54(t-(-0.158))] and females Lt=280.4[1-exp-0.75(t-(0.12))]. Recruitment occurred twice during the 2022 period, with peak recruitment of males occurring in April and August and females in May and September. Completion mortality (F) was higher than natural mortality (M). Male parrotfish F=1.06M=0.63 and females F=4M=0.80. Mean first-capture size (Lc) for male fish Lc=174 mm and females 147 mm.Keywords:Over-exploitationParrotfishSeribu Island