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INDONESIA
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan
Published by Universitas Riau
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Core Subject : Science,
Earth & Planetary Sciences
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Articles 2,919 Documents
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Relationship between Nitrate and Phosphate with Phytoplankton Abudancein the Inundation of PLTA Koto Panjang Reservoir Batu Bersurat village, XIII Koto Kampar Districts, Kampar Regency, Riau Province Dameyana S.C Lumban Tobing; Asmika Harnalin Simarmata; Madju Siagian
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 7, No 1 (2020): Edisi 1 Januari - Juni 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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AbtractMany activities in the inundation of PLTA Koto Panjang Recervoir Batu Bersurat Village contributed organic matter that affect nitrate and phosphate concentration in water and increasing the abudance of phytoplankton. Aresearch  aim  to know the relationship between nitrate and phosphate with phytoplankton abudance in the inundation of PLTA Koto Panjang and it was conducted in June-July 2019. There were three sampling stations, namely Station I (tourisms and palm’s plantation), Station II (there were restaurant and trees around of station) and Station III (floating cage). In each station, there were three sampling points, in the surface (15 cm), in 2 Secchi depth (330 cm), and in 4 Secchi depth (660 cm). Sampling were conducted 4 times, once/week. Water quality parameter measured were nitrate, phosphate, phytoplankton abudance, transparency, temperature, pH, dissolved oxygen, free carbondioxide and BOD5 (Biochemical Oxygen Demand). The result shown: nitrate 0.06-0.08 mg/L, phosphate 0.05-0.09 mg/L, phytoplankton abundance 123,877-169,428 Cells/L, dissolved oxygen 6.35-6.88 mg/L, free carbondioxide 5-12.99 mg/L, temperature 29-31 oC, transparency 145.1-187.5 cm, pH 5-5.3 and biochemical oxygen demand (BOD5)4.03-8.90 mg/L. The relationship of nitrate and phosphate  with phytoplankton abudance was very strong.Keywords:Kampar River, Floating Cage, Organic Matter, Water Quality, Mesotrophic
Reproductive biology of Anabas testudineusfrom the Lubuk Siam Lake, Lubuk Siam Village, Siak Hulu Sub District, Kampar District Mufidah, Muna; Putra, Ridwan Manda; Windarti, Windarti
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 7, No 1 (2020): Edisi 1 Januari - Juni 2020
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AbstractAnabas testudineus is type of fish commonly inhabit the Lubuk Siam Lake in Riau. However, information on reproductive biology of the fish is rare. To understand the biologycal aspects of this fish, astudy was conducted.The fish was sampled once at two weeks for a month period, from July to August 2019. Parameters measured were sex ratio, gonad maturity level, Gonad Somatic Index (GSI), fecundity and egg diameter. Result shown that there was 44 males and 53 females (sex ratio 1:1) . The female’s body is larger and has brighter color than those of the male. The gonadal matury leves in females was 4 in Lubuk Siam River.The Gonad Somatic Index (GSI) of male is around0.40% - 1.13%  and female is around 0.57%-4.60%. The average fecundity of the female was 1.986 -3.318. Egg diameter was around 0.53 - 0.58 mm. This result indicated that betok fish were total spawner. Diameter and the evenly indicate the fish is total spawner. The  absence of major females in the study area may indicate that the study area is not spawning graund.Keywords: Sex ratio, gonad maturity level, gonad somatix index, fecundity, Total Spawner
THE INFLUENCE OF SUBSTRATE NUTRIENT CONTENT ON THE DENSITY OF SEAGRASS (Enhalus acoroides) IN THE WATERS OF THE ISLAND OF PONCAN, NORTH SUMATRA PROVINCE Ellysa Shintya; Thamrin Thamrin; Zulkifli Zulkifli
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
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ABSTRACT This research was conducted in April-May 2019 in the waters of Poncan Island, North Sumatra Province, which aims to determine the large nutrient content of substrate (nitrate and phosphate), the level of seagrass density Enhalus acoroides, and to determine the effect of nutrient content of the substrate on the density of seagrass Enhalus acoroides. Determination of the research station by purposive sampling and research sampling using the transect line method. The results showed that the highest nutrient content of substrate (nitrate and phosphate) was found at Station II which has a type of muddy sand substrate and the area is influenced by tourist activity.Nitrate concentration values were 0,074 mg / l and 0,122 mg / l for phosphate concentration values.The highest seagrass density was in Station II with a value of 74,22 stands / m2which had the highest nitrate and phosphate content, and the lowest seagrass density was in Station III which had the lowest nitrate and phosphate concentrations.Simple linear regression test results of the influence of nutrient substrate on the density of seagrass with a value of R2(coefficient of determination) = 0,27 (nitrate), 0,40 (phosphate) indicates there was effect of nitrate and phosphate on the density of seagrass Enhalus acoroides. Keyword: Nutrient Substrate, Nitrate and Phosphate, Seagrass Density 
The effectivenessof EM4addition in the biofilter tanks to reduce Total Suspended Solid (TSS) and Ammonia (NH3)content for treating restaurant liquid waste Yulanda, Febri; Harahap, Sampe; Purwanto, Eko
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 7, No 1 (2020): Edisi 1 Januari - Juni 2020
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ABSTRACTRestaurant liquid waste may pollute aquatic environment as ithas high TSS and NH3content.Itshould be processed before being flown to environment.This study aims to understand the effectiveness of EM4 addition in reducing TSS and ammonia content in the restaurant liquid waste. This research was carried out in April 2019 at theNaga Sakti street.A Completely Randomized Design (CRD) was applied with 3 treatments P0 (without EM4), P1 (7,5 ml EM4), P2 (10 ml EM4), P3 (12,5 ml EM4)and 3 replications. Therestaurant liquid waste was kept in the biofilter tank for 6 days (3 days in the anaerob and 3 days in the aerob tanks) and then the TSS and ammonia were analyzed. The best result was obtained in the P2 (10 ml EM4).In that treatment theTSS decreased from 196 mg/L into  63 mg/L and NH3 from 9.08 mg/Linto 4.07 mg/L. The treated liquid waste was then use for rearing Oreochromisniloticus sized 3-5 cm for 96 hours. Thesurvival rate of the fish was 86%.Data obtained shown that theprocessed restaurant liquid waste can be used to rear Oreochromisniloticus. Keyword:Effective Microorganism-4, Anaerob tanks, Aerob tanks, Oreochromisniloticus
THE EFFECT OF OOCYTE DEVELOPER (OODEV)ON GONAD MATURATION OF SHEAT FISH (Ompok rhadinurus Ng) Fitri Rahmayani Tambunan; Netti Aryani; Hamdan Alawi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 7, No 1 (2020): Edisi 1 Januari - Juni 2020
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                                            AbtraksThe effect % Oocyte Developer (Oodev) dose on gonad find maturation % sheat fish (Ompok rhadinurus Ng) was conducted from July to October 2019 at the Aquaculture Research station, Faculty of Fisheries and marine, University of Riau. Pond raised brords takes weight ranged from 35 g to 42 g were injected with different doses % Oodev : P0 (0 ml/kg fish); P1 (0,5 ml/kg), P2 (1 ml/kg) and P3 (1,5 ml/kg) and raised for maturation in 0,5 m2 cages. The Oodev injection were done every 7 days. The results that Oodev dose effected the gonad maturation of sheat fish the dose % 1,5 ml/kg was the best result : duration of maturation wn 24 days; number of egg stripping 109 egg/gram fish; ovisomatic index 14,14%; egg diameter 1,27 mm; fertilization rate 89,30%; hatching rate 90,67% and survival rate % 5 days was 95,16%. Water quality parameters during experiment were classified as optimal, 23 – 27,4oC of temperature, 6,0-7,2 of power of hydrogen (pH) and 4,5 – 5,6 mg/l of dissolved oxygen.                                                                                     Keywords : Sheat fish, Oodev hormone, Gonad maturation, dose
Level of Satisfaction of Fishermen Against Service of Capture Operational Needs at the Sibolga Archipelago Fisheries Port, Central Tapanuli Regency, North Sumatra Province Silvina Winta; Alit Hindri Yani; Usman Usman
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 7, No 1 (2020): Edisi 1 Januari - Juni 2020
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ABSTRACKThis research was conducted in April 2019 at the Sibolga Archipelago Fisheries Port (PPN), Central Tapanuli Regency, North Sumatra Province. This study aims to obtain the value of the level of satisfaction of service and the level of performance of service operational needs of the capture of Sibolga VAT. Data collection was carried out at the Sibolga Archipelago Fisheries Port (PPN), Central Tapanuli Regency, North Sumatra Province. The method used in this study is the survey method. All data obtained were processed using CSI and IPA analysis. The fisherman satisfaction index value on the service attributes of fuel, water and ice needs is considered to have satisfied the fishermen and is important for fishermen who are in the scale range of 0.61 to 0.80 with the numbers 0.76, 0.80 and 0.77. And the service needs of the pier, TPI, and basket in Sibolga PPN are considered to be very satisfying for fishermen and very important for fishermen who are in the scale range of 0.81-1.00 indicated by the numbers 0.83, 0.83, and 0.84. Keywords: Fishermen Satisfaction, Service, Arrest Operations
IDENTIFICATION OF MACROFAUNAATTACHED ASSOCIATED WITH MANGROVE IN SUNGAITOHOR VILLAGE MERANTI DISTRICT RIAU Fitriansah, Heru; Samiaji, Joko; Nurrachmi, Irvina
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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                                         ABSTRACT Literatures on macrofauna organisms attached to mangrove islimited. The purpose of this research is to obtain the informationon macrofauna organism within the mangrove ecosystem. The research was conducted in December 2017. method used was direct purposive sampling. Macrofauna organisms attached and mangrove type were identified using identification books. The results obtained indicate that the most dominant organisms belonged to molluscs and crustaceans. Seven gastropod species and two crustaeans were(Cerithideacingulata, Cerithideaquadrata, Neritalineate, Chicoreuscapucinus, Cassidulaaurisfelis, Achatinellamustelina, Echinolittorinavidua, BalanusspandLlyoplaxsp). The type of mangrove vegetations were consistedof found, (Avicennia alba, Rhizopora apiculata,). Keywords:macrofauna, mangrove ecosystem, sungaitohor
SENSITIVITY SOLUTION OF KERSEN LEAVES (Muntingia calabura L.) AGAINST BACTERIAAeromonas Wijaya, Rahmat Santosa; Lukistyowati, Iesje; Syawal, Henni
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
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ABSTRACT Disease that often develops in aquaculture is one of them is red spot disease.This disease is often called Motile Aeromonas Septicemia (MAS) caused byAeromonas hydrophila.Natural ingredients that can be used as prevention and treatment of fish diseases are kersen leaf plant (Muntingia calabura L) which is antibacterial and antimicrobial.This research was conducted in December 2018-February 2019 in the Laboratory of Parasites and Fish Diseases, Faculty of Fisheries and Marine, University of Riau. The purpose of study was to determine the sensitivity of solution of kersen leaves to inhibit the growth of bacteria Aeromonas hydrophila and to know LD50solution of kersen leaves to jambal siam (Pangasius hypophthalmus) by immersion. Research method used is the experimental method, for sensitivity testusing the method of Kirby Bauerdisc with dosage used were 100%, 90%, 80%, 70%, 60%, 50%, 40%, 30%, 20%, 10%, 9%, 8%, 7%, 6%, 5% , 4% and controls (Oxytetracyclin). The results showed that the solution of kersen leaves can inhibit the growth of bacteriaA. hydrophila starting from a dose of 100% -4% with an average diameter of inhibition zones ranging from 13.55 - 6.25 mm. LD50 test of the solution of kersen leaf (M. calabura L.) againstjambal siam (P. hypophthalmus) by immersion for 24hoursis at a dose of 3.6%. Keywords: M. calabura L., Motil Aeromonas Septicemia, Kirby Bauer discs, LD50
The Effect of Photopriode Differences to The Growth of Population Microalga Haematococcus pluvialis Sri Midawati Agustina Panjaitan; Saberina Hasibuan; Syafriadiman Syafriadiman
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
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AbstractThis research was conducted in April-Juni 2019 at the Natural Feed Laboratory, BBAT Sungai Gelam. Jambi. The purpose of this study was to determine the best photoperiod in increasing the growth rate and biomass production of microalga H. pluvialis . The method used in this research was experimental using Completely Random Design (CRD) one factor with four treatments and repeated three times. The treatments used was P1 24 bright (24B), P2 20 bright 04 dark (20B : 04D), P3 16 bright 08 dark (16B : 08D), P4 12 bright 12 dark (12B : 12D). Cultivation was carried out for ten days, using Walne. The results showed that the treatment of the dark cycle and the light cycle affected the population density and specific growth rate. Lighting 16 hours Bright  08 hours Dark gave the best results with a cell density of 888 x 104 cells / ml and a specific growth rate of 0,353 cells/ml/day with peak growth occurring on the day eight. Water quality parameters during the study were optimal for the growth of microalga H. pluvialis with a water temperature of 21,05-23,78 0C, pH 7,70-8,78 and dissolved oxygen 5,54-6,30 mg /L. Keywords: Photopriode, Growth of Population, Haematococcus pluvialis.
FRACTION ANALYSIS OF SEDIMENT IN SELAT PADANG OF SUNGAI PAKNING RIAU PROVINCE Hamidah Dasno Vera; Rifardi Rifardi; Elizal Elizal
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
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AbstractThis research was conducted in January-February 2019. To determine the types of sediment constituents material and the environmental conditions of the Selat Padang waters based on the texture of surface sediment. The sediment was taken using grab sampler from three station, in which each station consists of three sampling point. The results showed that sediment types were in the waters of the Selat Padang indomination by sandy mud.Sediment parameters in the Selat Padang have an average diameter (Mz) of 5.2-5.33 Ø with the classification of medium silt, sortingthat is2.16-2.93 Ø with the classification is the disaggregated very bad, skewness (-0.12)-(- 0.48) Ø with classification very rough, kurtosis is 4.80 - 25 Ø with the classification very sharp once classified into platikurtik .The sediment compositions found were lithogeneous and biogeneous dominated bylithogenous, indicate the sediment comes from coastal erosion carried by ocean currents and then deposited in the bottom of the watersThe highest average value of organic materials contained in the station 1 (12.76%) located in Sei Selari port which is included in the classification of the medium organic matter indicate little supply of organic material from the sea to the coast. Keywords: Selat Padang, Sediment, Sediment Composition, Organic Material

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