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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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Comparative Study of Primary Productivity Based on Oxygen Method in The Tanjung Kudu Lake and Parit Lake Kampar Regency, Riau Province Clara Novicasari Br Surbakti; Tengku Dahril; Asmika Harnalin Simarmata
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 8, No 2 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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ABSTRACTPrimary productivity is the conversion of solar energy and nutrients to living biomass through photosynthesis. A research aimed to understand the comparisons of community activities to primary productivity in Tanjung Kudu Lake and Parit Lake. This research was conducted in December 2020.There were three sampling stations namely inlet area, in the middle of the lake and in the end of the lake.In each stations, there were 2 sampling point, in the surface and 2 Secchi depth. Sampling was done three times, once per week.Primary productivity based on oxygen method in the Tanjung Kudu Lake was 344,44-509,72 gC/m3/day and in the Parit Lake was 366,66-539,58 gC/m3/day. Water quality parameter such as transparency46-67cm, temperature 29-30oC, pH 5-6, dissolved oxygen 2,9-5,3 mg/L, CO27,99-15,99mg/L, nitrate 0,0133-0,064mg/L and phosphate 0,0130-0,064mg/L while in Lake Parit the transparency was 47,5-67,5 cm, temperature 29-30oC, pH 5-6, dissolved oxygen 3,3-5,2 mg/L, CO27,99-15,99 mg/L, nitrate 0,022-0,054 mg/L and phosphate 0,024-0,050 mg/L.Based on two way anova statistical test of primary productivity was not significantly different between stations and over time. Based on the abundance of primary productivity, Tanjung KuduLake and ParitLake can be categorized as mesotrophic. Keywords:Primary productivity, Water Quality, Tanjung Kudu Lakes, Danau Parit Lakes,Mesotrophic
THE EFFECT RECOMBINANT GROWTH HORMONE (rGH) DOSES AND IMMERSION DURATION ON GROWTH AND SURVIVAL RATE OF RIVER CATFISH LARVAE (Hemibagrus nemurus) Ika Riezki Ananda; Sukendi Sukendi; Nuraini Nuraini
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 8, No 1 (2021): Edisi 1 Januari s/d Juni 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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ABSTRACT            This research was conducted on February 16, 2020 - March 27, 2020, at Fish Hatchery and Breeding Laboratory of Fishery and Marine Science Faculty of Riau University. The aim of this research was to determine the effect ofRecombinant Growth Hormone (rGH) and the optimal dose and immersion duration on growth and survival rate of river catfish larvae (Hemibagrus nemurus). The method used  was a Completely Randomized Design Factorial with 2 factors. The first factor was  the dose of rGH with 4 levels;  0 mg/L (D0), 2,5 mg/L (D1), 3 mg/L (D2), and3,5 mg/L (D3). The second factor was the immersion duration with three levels of 45 minutes (P1), 60 minutes (P2) and 75 minutes (P3) respectively.The larvae were cultured preserved in jars for 40 days with 5 fish/L density. The results showed that the use of different doses and  immersion duration of rGH effected  on absolute weight, absolute length, specific growth and survival rate of river catfish larvae. Treatment dose 3 mg /L and 60 minutes (D2P2) with the result of absolute weight growth of 1.95 grams, absolute length 6.08 cm, specific growth rate of 15.88 % and survival rate of 84.66%. The water quality parameters during the study were optimal for river catfish larvae with temperature 27.8-28.9 oC, pH 5.9-6.9 and dissolved oxygen 3.5-6.8 mg/L.Keywords :Doses, Immersion Duration, Recombinant Growth Hormone,Hemibagrus nemurus.
The Effect Of Soaking Vitamin C On Egg Hatchability, Growth And Survival Of Larvae (Colossoma macropomum) Wewi Lorenza; Nuraini Nuraini; Sukendi Sukendi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 8, No 1 (2021): Edisi 1 Januari s/d Juni 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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ABSTRACT         This study was conducted on December 2019 –February2020 at the Fish Hatchery and Breeding Laboratory, Faculty of Fisheries and Marine, University of Riau, Pekanbaru. The purpose of this study was to determine the effect of vitamin C on hatchability of eggs, growth, and survival oflarvae. This study used a Completely Randomized Design (CRD) with 5 treatments and 3 replications. The dose of vitamin C solution used isC0 (0 mg/L), C50 (50 mg/L), C100 (100 mg/L), C150 (150 mg/L) and C200 (200 mg/ L). Immersion of Freshwater Pomfret eggs with vitamin C for 3 hours with density 150 eggs and water volume 1 L. Larvaewere maintained for 20 days. The results showed that different dose of vitamin C solution had a significant effect (P <0.05) on fertilization rate (88.66%), hatching rate (91.33%), and absolute length growth (1.26 cm). However, it did not have a significant effect (P> 0.05) on absolute weight growth, specific growth rate and survival rate of larvae. The best dose of vitamin C to increase the fertilization rate, hatching rate and absolute length growth was 150 mg/L. The water quality during the study was temperature26.3-28.2 ºC, pH water 5.5-5.8, pH of hatching water 5.9-6.3, pH of larvae maintenance water 5.7-6.5 and DO 6.0-6.6 mg/L.Keywords :  Colossoma macropomum, Vitamin C,  Fertilization Rate,Hatching Rate,Growth, Survival Rate
Comparative study of gill, kidney and liver structure of Pangasius hypophthalmusreared under manipulated photoperiod and from the Siak River Theresia Fanta Ria; Windarti Windarti; Efawani Efawani
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 7, No 2 (2020): 2 Juli - Desember 2020
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AbstractPangasiushypophthalmus is nocturnal fish that grow well in dark condition. In dark condition however, phytoplankton may be none, the water become rich in organic materials and this condition is match for developing parasites and pathogen that negatively affect the fish.  Tounderstand the health status of the fish in general, the histologcal structure gill, kidney and liver was investigated. The results were then compared to those obtained from fish taken from the Siak River. The research was conducted on Agustus-Desember 2019. There were 4 treatments applied, namely control (natural photoperiod), 18G(18 hours dark ) and 24G (24 hours dark), 3 repetitions/ treatment. Parameters  measured were survival  rate and the histological structure (gills, kidneys and liver). Samples were fixed in 5% formalin and histologically processed and stained with Haematoxylin Eosin. Results shown that in general the histological structure (gill, kidney and liver) of the treated fish and the fish from the Siak River are not different. There were abnormalities in the gill, such as hyperplasia, hypertrophy, odema and necrosis.  Inthe all fish there are Dactylogyrus sp parasites that may caused the gill damage. The histological structure of kidney and liver are normal. Data obtained indicate that the damage of the gill may caused by the presence of the parasite and it is not affected by the manipulated photoperiod.           Keywords: Health Status, Siak River, Histological Structure, Dactylogyrus sp.
THE EFFECT OF IMMERSING OF TUNA FISH FILLET (Euthynnus affinis) INTO THE LIQUID SMOKE SOLUTION ON THE QUALITY OF FISH NUGGET Shafa Yasmin Vazilla; Tjipto Leksono; Dian Iriani
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 7, No 2 (2020): 2 Juli - Desember 2020
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ABSTRACT Tuna fish is showing a high quantity of production and also has valuable nutrient contents. Fish nugget is one of the most popular forms of fishery product diversification. However, it is possible to develop nuggets more to provide consumers with a wide choice of flavors. One way to add the flavor of nugget is by adding smoked flavor to tuna fish nuggets. The adding of liquid smoke into the fish product is a way to produce smoke flavored fish nugget safely for health. This research aimed to observe the effect of fish fillet immersion into the liquid smoke solution at varied combination of concentration and immersion time on the quality of the fish nugget and to determine the best treatment to produce the most preferred tuna nugget by consumers. The research used an experimental method and designed for a Completely Randomized Design to conduct the treatment of fish fillet immersion into the liquid smoke solution at 5 varied concentration and immersion time combinations, based on a preliminary study, namely:  2% for 30 minutes (K2L30), 2% for 60 minutes (K2L60), 4% for 30 minutes (K4L30), 4% for 60 minutes (K4L60), and without immersion as the control. The result showed that the treatment of immersing the fish fillet into the liquid smoke solution at the concentration of 2% for 30 minutes (K2L30) produced the best quality of tuna fish nugget and the highest consumer preference. This fish nugget contained 56.0% moisture, appropriated to the provision in Indonesian National Standard (SNI) for fish nugget. The product is also showing as the safely food, showed by the content of total phenol at 26,2 ppm or equivalent (0.00262-0.00543%), which is still far below the maximum level allowed for total phenol in food (0.02-0.1%), pH 5,90, and no Staphylococcus aureus bacteria contaminated. Keywords: fish nugget, flavor, immersion, liquid smoke
Otolith growth rings pattern in barau fish (Hampala macrolepidotaKhul & Van Hasselt, 1823) in the Teluk Petai Lake, Kampar Regency, Riau Province Siahaan, Lamminar Juliaty; Efizon, Deni; Efawani, Efawani
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 8, No 1 (2021): Edisi 1 Januari s/d Juni 2021
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AbstractThe Teluk Petai Lake is an oxbow lake that received water from the Kampar River. The lake, however, received domestic pollutant that negatively affects the water and thus affect the life of fishes, including Hampala macrolepidota living in that lake. To understand the growth ring pattern in the otolith of that   fish, a study was conducted on November to December 2020. The fish was sampled using nets with 3/4 and 2,3 inch mesh size, 4 times, once/ week. The fish captured was then measured, weighed and the otolith (sagita) was removed. The otolith was then sticked in slide glasses using Crystalbond Amber 509 and then shaved manually using whetstone to reveal the growth ring patterns. The dark ring was identified using a binocular microscope. Results shown that  among 50 fishes captured (200 – 350 mm TL,  90 – 320 gr BW), 48 fishes have dark growth rings, 1 – 3 rings/ fish. The distance between the otolith’s nucleus and the 1st  growth ring was various, ranged from 0.1 – 0.75 mm, indicating that the formation the growth ring is individual and it is not resulted from mass evidence. Based on data obtained, it can be concluded that  mostH. macrolepidota in the Teluk  Petai Lake faced problems that hampered their growth as indicated by the formation of dark rings in the otolith.Keywords: Oxbow lake, Growth pattern, Sagita, Hampala barb
Chlorophyll-a Concentration in Teluk Petai Lake Buluh Nipis Village Siak Hulu Sub District Kampar District Riau Province M. Arifan Fadhilla M; Tengku Dahril; Asmika Harnalin Simarmata
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 7, No 2 (2020): 2 Juli - Desember 2020
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ABSTRACTThe research of chlorophyll-a concentration conducted in June-July 2020 at Teluk Petai Lake Buluh Nipis village. A study aims to understand the concentration and throphic state Teluk Petai lake based on chlorophyll-a . There were 3 stations namely station 1 (inlet area), station 2 (in the middle of the lake) and station 3 (in the end of the lake). In each stations vertically there were 2 sampling point, in the surface and 2 Secchi depth. Samplings were carried out three times with  ten days interval. Result shown that temperature is 30-31oC, transparency 61.66-70 cm, pH 5, DO 4.17-5.23 mg/L, CO2 7.98-10.65 mg/L, nitrate 0.038-0.054 mg/L, phosphate 0.051-0.062 mg/L. Result shown that the chlorophyll-a concentration ranged from 7.63-14.37μg/L. Chlorophyll-a concentration influence the water quality such as transparency, nitrate and phosphate concentration. Based on the chlorophyll-a concentration, the waters at Teluk Petai lake can be categorized as mesothrophic. Keywords: Mesothrophic, Throphic State, Water Quality, Depth.
Analysis of growth and exploitation rate of Eleutheronema tetradactylum in the Bengkalis waters , Bengkalis Regency Nafisah Nafisah; Eni Sumiarsih; Nul El Fajri
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 8, No 1 (2021): Edisi 1 Januari s/d Juni 2021
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 ABSTRACKEleutheronema tetradactylum isan important economic valued fish in the Bengkalis waters. Due to the high demand of consumers, the fish is highly exploited and it negatively affects the fish population. This study was done in the Bengkalis waters on May to July 2020 and purposed to understand the length frequency distribution, determine the growth parameters, mortality rate and the rate of exploitation in order to provide appropriate management model for that fish resource. Data were analysis by a ELEFAN I method (Electronic Lenght Frequencys Assesment Tool) from the FISAT II (FAO-ICLARM Fish Stock Assesment Tool) software. E. tetradactylumcaptured were 78 samples, the length frequency distribution of the female fish were ranged from 75 to 154 cm TL. The growth pattern of the fish was allometric negative. The Von Bertalanffy growth equation shown that the coefficient (K) 1.01 with infinitive length (L∞) 151.2 cm and t0 -0.2115 per year. The total mortality rate (Z) of the fish was 3.43 per year at the rate of natural mortality (M) 1.14 per year, while mortality rate due to fishing (F) 2.30 per year and the exploitation rate was 0.67 per year. The value of the exploitation rate has exceeded the value of the optimum exploitation that was 0.5.Keywords:Allometric negative, FISAT II, Infinitive Length, Mortality,Von bertalanffy.
VARIATIONS OF SEAWEED FLOUR SUBSTITUTION ON FIBER CONTENT LAVA CAKE SEAWEED FLOUR (Eucheuma Cottonii) Novita Indriani; Dewita Dewita; Suparmi Suparmi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 7, No 2 (2020): 2 Juli - Desember 2020
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ABSTRACT This study aims to increase the fiber value of the lava cake by substituting seaweed flour (Eucheuma cottonii). The research method was experimental, namely processing lava cake by substituting seaweed flour directly. The design used in this study was a non-factorial Completely Randomized Design (CRD), consisting of 4 treatment levels, namely L0 (control), L1 30% seaweed flour), L2 (50% seaweed flour), L3 (70% flour). The results showed that the lava cake substitution of seaweed flour had a significant effect on the fiber content of the product. The 50% treatment of seaweed flour (L2) was the best treatment with fiber content reaching 13.22%.Keywords:eucheuma cottonii, lava cake, seaweed flour
THE EFFECT OF DIFFERENT FORMULATIONS OF REBON SHRIMP GRILLED FISH CAKE (Acetes erythraeus) ON CONSUMER ACCEPTANCE Mushelpi Mushelpi; Suparmi Suparmi; Sumarto Sumarto
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 8, No 2 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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ABSTRACTThis study aims to determine the formula of grilled fish cake (otak-otak) using rebon shrimp (Acetes erythraeus.) flour. This study consisted of 2 stages, namely the manufacture of rebon shrimp flour and determining the best formulation. The method used was experimental with a Completely Randomized Design consisting of 4 levels of treatment of addition shrimp flour, namely: O0 (0 g), O1 (250g), O2 (350g), and O3 (500g), with 3 replicated.Based on organoleptic test showedthat rebon shrimp flour had a significant effect on the taste, aroma, texture, appearance, and color ofgrilled fish cake. The formulation of 350 g of rebon shrimp flour was selected indicated by the value of appearance6.70, smell 7.54, taste 7.29, and texture 7.30. Furthermore, the selectedgrilled fish cake contained moisture, ash, fat, and protein was46.22%, 3.34 %, 4.60%, and 15.39%, respectively.Keywords: Grilled fish cake, Rebon shrimp, Consumer acceptance

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