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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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ABUNDANCE OF POISONOUS BENTHIC DINOFLAGELLATE IN SEAWEED (Sargassum Sp) IN THE COASTAL WATERS OF NIRWANA WEST SUMATRA PROVINCE Nickson Panjaitan; Irvina Nurrachmi; Sofyan Husein Siregar
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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ABSTRACTThe study was held  in  January to February 2019. The purpose of this study was to determine the abundance of toxic benthic dinoflagellates on seaweed Sargassum sp. each station and to see the relationship of abundance of toxic benthic dinoflagellates with the quality of the waters in the seaweed ecosystem of Sargassum sp. in the waters of Nirwana Beach, West Sumatra Province. The method used in this study is a survey method. The results showed the highest genus abundance at the three research stations was the genus Prorocentrum with an average abundance value of 216.05 cells / g and the lowest genus abundance at the three research stations was the Gambierdiscus genus with an average abundance of 78.80 cells / g. Obtained simple linear regression test results show the concentration of nitrate and phosphate concentration is directly proportional to the abundance of dinoflagellates. The relationship between abundance of benthic dinoflagellate abundance with moderate relationship nitrate concentration and the relationship between abundance of benthic dinoflagellate abundance with strong relationship phosphate concentration.Keywords: Dinoflagellata, Benthic, Poisonous, Sargassum sp.
COMPOSITION ANALYSIS OF RESULTS OF FISHING GARNING NETWORKS BASED ON DIFFERENCES OF NETWORK SIZES AND OPERATING TIME IN MESKOM VILLAGE, BENGKALIS DISTRICT, BENGKALIS DISTRICT Pranoto, Edwin; Bustari, Bustari; Usman, Usman
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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ABSTRACTCatching is an effort made by humans to be able to get the organisms that are in the waters, to get these organisms a fishing gear is needed. The purpose of this study was to determine the composition of catches of species and number of fish using drift gill nets with mesh sizes of 3 and 6 inches at day andnight in the village of Meskom. This research was conducted on 31 August to 13 September 2018 inMeskom Village. The method used is the survey method, in which the researcher descends directly into the field and participates in the process of operating the Gill Net fishing gear. The results obtained were 22 species of fish weighing 258.63 kg from 565 fish.The results of the mesh size of 3 inches during the study obtained 523 tails with a total weight of 224.97 kg, during the day 259 tails (104.18 kg), while at night 264 tails (120.79 kg). The results of the 6-inch mesh size during the study obtained 42 tails with a total weight of 33.66 kg. Day 5 tails (2.29 kg), and nights 37 tails (31.37 kg).Based on the 3-inch mesh size t-test day and night, it was found that the t-count 0.85305 was smaller than the 1.7341 table so that the null hypothesis (H0) was accepted, there was no difference in the catch between day and night on the 3-inch mesh size in the Meskom village Bengkalis Bengkalis Regency.While the mesh size is 6 inches, the t-test obtained is 2.7044, greater than the 1.9432 table, so the null hypothesis (H0) is rejected because there are differences in catches between day and night on the 6 inch mesh size in the Meskom village,Bengkalis District Bengkalis..Key word :Gill Net, Difference in Mesh Size and Time, Capture Results. 
Distribution of Giant Prawns (Macrobrachium rosenbergii) in the Mangrove Ecosystem Rawa Mekar Jaya Village Sungai Apit District Siak Regency Riau Province. Riska Diani; Nur El Fajri; Adriman Adriman
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 7, No 1 (2020): Edisi 1 Januari - Juni 2020
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Abstract The mangrove ecosystem of the village of Rawa Mekar Jaya has been degraded due to illegal logging. The condition of water quality is influenced by various activities that take settlements, sago processing coastal activities of tides that cause changes in water salinity. This research was conducted in July 2019 in the mangrove/estuary ecosystem of the Rawa Mekar Jaya river. The purpose of this study was to determine the distribution patterns of giant prawns in the mangrove ecosystem of Rawa Mekar Jaya Village. There are 3 research stations (50x50m2). Taking sampling using rowing boats and fishing gear with hooks 3. This research every day for 1 week.Sample observed in the laboratory of Fisheries Biology in Fisheries and Marine Faculty Universitas Riau. The observations made were meristic, morphometric and distribution index calculations. Research data were analyzed descriptively. The results showed there were differences in the distribution patterns of shrimp at each station. Stations 1 and 2 of shrimp distribution are uniform, while at station 3 distribution of shrimps is random. The measurement results of sample was found with total shrimp length (PTO) ranges from 110-250 mm, with an average of 176 mm and total body weight (BTO) ranging from 31-140 g with an average of 83.5 g. Shrimp caught during the study female were adult and juvenil, and which indicated that the mangrove ecosystem was a place of spawning for giant prawns.Keywords: Giant prawns Distribution, Mangrove Ecosystem, Water Quality, Rawa Mekar Jaya
Type and abundance of phytoperiphyton in the plastic substrate placed in the Bunter Lake, Pangkalan Baru Village,Siak Hulu Sub-districts, Kampar Districts, Riau Province Annisa Amaliah; Madju Siagian; Tengku Dahril
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 7, No 1 (2020): Edisi 1 Januari - Juni 2020
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AbstractPhytoperiphyton is a microscopic organism that attach on certain substrate. Research aims to determine the type and abundance of phytoperiphyton on plastic substrate has been carried out in June- July 2019 in the Bunter Lake. There were three sampling stations, namely Station 1 (inlet), Station 2 (in the middle of the lake) and Station 3 (in the end of the lake ). The number of substrates in each station were 30 pieces. Sampling were conducted once/week for a 3 weeks period. The phytoperiphyton samples are brushed from the plastic substrate (8x3 cm),  10  plastic substrates/ stations. Water samples were collected from 2 different depth namely in the surface (20 cm) and 2 secchi depth (180 cm). Water quality parameters measured were temperature, transparancy, pH, dissolved oxygen, free carbon dioxide, nitrate and phosphate. Results shown that there were 28 types of phytoperiphyton present and they were belonged to 3 classes, namely  Chlorophyceae (15 species), Bacillariophyceae (10 species), and Cyanophyceae (3 species). The abundance of phytoperiphyton were 8,236- 19,581 cells/cm2. The water quality parameters were as follows: temperature was 29.7-30oC, transparancy was 78.33- 83.67 cm, dissolved oxygen was4.07-6.13 mg/L, pH was 5, free carbon dioxide was 7.32-13.31 mg/L, nitrate was 0.05413-0.10267 mg/L and phosphate was0.02137-0.03983 mg/L. Based on type of phytoperiphyton, trophic state of  Bunter Lake can be categorized as eutrophic.Keywords : Lentic, Sessile Organism, Water Quality, Trophic State,Oxbow Lake
The Effect OfDifferent Surface Area of the Aquarium andStocking Density On Growth and Survival Rate of Siammese Catfish Larvae (Pangasius hypophthalmus) Arvina Vindi Nina; Hamdan Alawi; Netti Aryani
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 7, No 1 (2020): Edisi 1 Januari - Juni 2020
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AbstractThe aim of this research was to determine the effect of different surface area of the aquarium and stocking densityon growth and survival rate of siammese catfishlarvae reared with a water recirculation system. This research was conducted from October-December 2019 at the Fish Hatchery and Breeding Laboratory, Fisheries and Marine, University of Riau. The Method used was a Factorial Completely RandomizedDesign with two factors.The first was surface area of aquarium with three levels, namely 30x30x30 cm3 (Lp1), 30x40x30 cm3 (Lp2) and 30x50x30 cm3(Lp3). While the second factor was stoking density with three levels namely 250 larvae/m2 (Pt1), 500 larvae/m2, 1000 larvae/m2. The larvae were reared in 15 L aquarium for 40 days. The result showed that surface area and stocking density gave a significant effect in absolute weight, absolute length, specific growth rate and survival rateof siammese catfish larvae reared in 40 day. Surface area of 30x40x30 cm3 and stocked at density of 250 larvae/m2 were signifycanthy the highest in absolute weight (7,73 gr), absolute length (4,63 cm), spesific growth rate (5,35 %/day) and survival rate (90,00 %). The water quality parameters during research were rangedtemperature26,4-27,5°C, pH 5,2-6,2 and dissolved oxygen 3,6-4,67mg/l. Keywords : Surface area, Stocking denstity,Siammese Catfish Larvae,Growth and Survival rate 
Morfometrik, Meristik Dan Pola Pertumbuhan Ikan Toman (Channa micropeltes Cuvier, 1831) Di Waduk Plta Koto Panjang Desa Pulau Gadang Kecamatan Xii Koto Kampar Kabupaten Kampar Provinsi Riau. Eli Yana Siregar; Ridwan Manda Putra; Eddiwan Eddiwan
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 7, No 1 (2020): Edisi 1 Januari - Juni 2020
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AbstractToman fish (Channa micropeltes Curvier, 1831) is one type of fish that is commonly found in the Koto Panjang hydropower reservoir. This fish belongs to the Channidae family, and is the largest fish of the genus Channa. Changes in water conditions in the Koto Panjang Hydroelectric Reservoir can affect the condition of organisms in the waters. The availability of food in the waters will affect the morphometric characteristics, meristik and growth patterns of toman fish. To find out the morphometrics, meristik and growth patterns of toman fish (Channa micropeltes). This research was conducted in April-Mai 2019 toaman fish caught using fish traps and fishing rods. The measured aspects are morphometrics, meristik and length length relation of toman fish. Fish samples totaling 100 fish, consisting of 51 males and 49 females. The results of morphometric measurements are known to the total length of fish between 110-550 mm, and body weight of 18-1600 gr, its growth pattern isometric. Whereas the characteristics of the toman fish meristik are the radius of the fins respectively D.43-44.2, P.15-16, V.6-8, A.26-28.2, C.14-16. Scales on the dorsal fins 15-25, scales around the body 40-44 lines, scales on the trunk of the tail 14-18 lines, and the number of scales on the lateral line 88-95. Toman fish have ctenoid scales.Keywords: Toman fish (Channa micropeltes Curvier, 1831), Koto Panjang 
TECHNICAL ANALYSIS AND FEASIBILITY OF PURSE SEINE FISHING FISHERY BUSINESS IN THE SIBOLGA ARCHIPELAGO, NORTH SUMATERA PROVINCE Juliana Normauli Sinaga; Pareng Rengi; Isnaniah Isnaniah
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 7, No 1 (2020): Edisi 1 Januari - Juni 2020
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ABSTRACTThis research was conducted in July-August 2019 at the Sibolga Nusantara Fisheries Port, North Sumatra Province. The purpose of this study is to determine the technical aspects of purse seine and analyze the feasibility of purse seine fishing. The method used in this study is a survey method. Primary data collection is done by direct interviews with fishermen and business owners who use purse seine. The sample used in this study was 5 ships with different GT sizes. From the results of trawl ring construction research consists of upper ris rope, lower ris rope, wings, body, pouches, slag, buoy, ballast and wrinkle rope. The results of the business feasibility analysis show that the NPV value for 29 GT vessels is Rp.125.236.270, 50 GT vessels is Rp.491.248.469, 77 GT ships is Rp.732.783.336, 98 GT ships is Rp.1.106.912.823, and 128 GT vessels totaling Rp.1.055.826.712, BCR value for ships 29 GT 1.3, 50 GT 1.0 vessels, 77 GT 1.0 vessels, 98 GT 2.0 vessels, and 128 GT 1.0 vessels, FRR value for ships 29 GT of 19%, 50 GT of 39%, 77 GT of 36%, 98 GT of 44%, and 128 GT of 26% and PP value for 29 GT 5 years 3 months, 50 GT ships 2 years 6 months, 77 GT ships 2 years 8 months, 98 GT ships 2 year 3 months, and 128 GT ships 3 years 8 months. Therefore, it can be concluded that the fishing effort is feasible to be run and developed.Keywords: Technical Analysis; Financial Analysis; Trawl fishing gear
PHYTOPLANKTON COMMUNITY STRUCTURE IN MANGROVE WATERS OF RAWA RIVER VILLAGE, SIAK PROVINCE, RIAU Putri Amelia Yolanda; Adriman Adriman; Nur El Fajri
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 7, No 1 (2020): Edisi 1 Januari - Juni 2020
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 ABSTRACTMangrove river swamp village is one of the mangroves in Siak Regency, Riau Province. This study aims to determine the structure of the phytoplankton community in the mangrove ecosystem, which was conducted in April 2019. Samples were taken 3 times, once / week, in 3 different regions. The results found that there were 19 species of phytoplankton in mangrove waters of swamp river villages. Phytoplankton consists of 4 (four) classes, namely: Bacillariophyceae (14 types), Chlorophyceae (1 type), Cyanophyceae (3 types), and Xantophyceae (1 type). The abundance of phytoplankton species in the waters ranges from 5375 -13550cells / L. The results of the phytoplankton species diversity index (H ') in the mangrove waters of Sungai Rawa Village ranged from 2.9323 – 3.8107, the dominance index (C) ranged from 0.0757 -0.1365and the uniformity index (E) ranged from 0.7174 - 0.9323. Water quality in the mangrove waters of Sungai Rawa Village is a temperature of 29-30ºC, brightness 52-76 cm, pH 7, salinity 24.33-26.33‰, dissolved oxygen 5.03-6.13 mg / L, free carbon dioxide 2.50 -3.28 mg / L, nitrate 0.08-0.16 mg / L and phosphate in the range 0.09-0.17 mg / L.Keywords: community structure, mangrove ecosystems, Bacillariophyceae  
THE EFFECT OF PROBIOTIC ADDITION IN FEED TOWARDS GROWTH PERFORMANCE AND SURVIVAL RATE OF TAMBAQUI (Colossoma macropomum) USING BIOFLOCS SYSTEM Wirangga Albab Abrar; Niken Ayu Pamukas; Iskandar Putra
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 7, No 1 (2020): Edisi 1 Januari - Juni 2020
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                                                ABSTRACTThis research aim to determine the optimal dose of additional probiotic in feed toward the growth performance and survival rate of tambaqui (Colossoma macropomum) by using biofloc system. This research was conducted on March 30-May 9, 2018 at Technical Service Unit (UPT) of Hatchery, Marine and Fisheries Faculty, University of Riau. This research was using experimental method by completely random design (RAL) one factor with three replications. The treatments were: A: 0 g/kg of feed (control), B: 0,5 g/kg of feed, C: 1 g/kg of feed, and D: 2 g/kg of feed. The probiotic (Bacillus sp) The results showed that a different doses of additional probiotic affecting the growth performance and the survival rate of tambaqui using biofloc system. In addition, it also affected the absolute weight growth, absolute length growth, feed efficiency and feed conversion ratio.The optimal dose was at 2 g/kg of feed as it showed significantly different results compared to control and was not differ significantly at higher doses. So that while being applied in terms of economy, 2 g/kg was the most efficient dose, by giving the absolute weight growth was 37,62 g, absolute length was 6,91 cm, specific growth rate was 7,00%, feed efficiency was 104,16%, feed conversion ratio was 0,96 and survival rate was 100%.Keyword : probiotic, tambaqui, biofloc
THE EFFECT SUCCESS OFOVAPRIM, hCG AND COMBINATION ON SPAWNING LELAN BARB(Osteochilus pleurotaenia Blkr) Bahtera Sanjaya Sitepu; Hamdan Alawi; Netti Aryani
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 7, No 1 (2020): Edisi 1 Januari - Juni 2020
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ABSTRACTThe aim of this research was to determine the effect of ovaprim, hCG and their combination on spawning success of lelan barb(Osteochilus pleurotaenia Blkr). This research was conducted from 6 September -27 october 2019 at the Fish Hatchery and Breeding Laboratory, Fisheries and Marine Science Faculty, Riau University.The method used was an experimental method with a Completely RandomizedDesign (CRD)with four treatments and three replications.The treatments wereP0 (NaCl physiology 0,9%/kg of body weight), P1 ( Ovaprim 0,6 mL/kg of body weight), P2 (hCG 0,5 900 IU/ kg of body weight), and P3 (Ovaprim 0,5 mL/kg + hCG 550 IU/kg of body weight).The best result showed that treatment of P1 (Ovaprim 0,6 ml/kg)was turn of latencytime (6.03 hours), amount eggs strip  (174 eggs/g gonads), egg maturition rate (81%), Ovisomatic Index (11,21%), fertility rate (21,68%), hatching rate (77,28%) and survival rate of 5 days larva (81,17%). The water quality parameters during research was in optimal temperature 280 C, pH 6 and dissolved oxygen 3,77- 5,24 ppm. Keywords :Osteochilus pleurotaenia Blkr, Ovaprim, hCG, Spawning

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