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INDONESIA
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan
Published by Universitas Riau
ISSN : -     EISSN : -     DOI : -
Core Subject : Science,
Earth & Planetary Sciences
Arjuna Subject : -
Articles 2,919 Documents
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Reproductive Biology of Mystus nigriceps from the Tarai River, Kampar Regency, Riau Province Nataliska Nataliska; Deni Efizon; Efawani Efawani
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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AbstractMystus nigricepscommonly inhabit the Tarai River that has been polluted  and it may affects the reproductive biology of the fish. A study aims to understand the reproductive biology of M. nigriceps has been conducted. The fish was sampled        5 times, once/two weeks, from April to July 2019. Parameters measured were Sex Ratio, Gonad maturity Level, Gonad Somatic Index (GSI), fecundity and egg diameter. Results shown that there were 34 males and 66 females (sex ratio 1:2). Male fish was indicated by the presence  of white spot in  tail and it has pointed genital papilla.  The  genital papilla of female is blunt. The size of male ranged from 73.01-140.22 mm (SL), while that of the female ranged from 59.67-160.21 mm (SL). The GSI of male ranged from 0.12 to 13.06%, while that of the female was 0.33-15.35%. The fecundity was 4.644 to 34.938 eggs/fish and egg diameter was 0.4 to 0.7 mm. The eggs in all size distribute evenly in the ovary and it indicates that this fish is a total spawner.Keywords : Catfish, Sex Ratio, Gonad Somatic Index, Total Spawner
The effectiveness of EM4 addition in the biofilter tanks to reduce the nitrate and phosphate concentration in the Sago Industrial Liquid Waste Asra Trigana Lisva; Sampe Harahap; Eko Purwanto
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Abstract The sago industrial liquid waste is rich in Nitrate and Phosphate and thus need to be processed before being flown to environment. A study aims to reduce the nitrate and phosphate in that sago liquid waste by using biofilter that was added with Effective Microorganisms-4has been conducted in April-May 2019. There were 3 treatments applied, namely the addition of 17 mL, 20 mL, and 23 mL EM4 in the anaerob tank and aerob tank. The waste was settled for 3 days in the anaerob tank and 3 days in the aerob tank. The treated waste was then tested for Nitrate and Phosphate concentrations. The treated waste was also used for rearing Osphronemus gouramy seedlings. Results shown that the Nitrate levels were reduced from 44.47 mg/L to 13.53 mg/L and the Phosphate levels were reduced from 1.0951 mg/L to 0.1372 mg/L. The best treatment to reduce the nitrate and phosphate concentrations was the addition of 20 mL EM4 and the survival rate of O.gouramy seedlings  was 73%. It can be concluded that the addition of EM4 in the biofilter tanks was able to reduce the Nitrate and Phosphate concentration in the sago industrial liquid waste.Keyword    : Effective Microorganisms-4, Osphronemus gouramy, Biofilters, Aerob tank, Anaerob tank
Stomach Content Analysis of Hemibagrus nemurus from the Kampar Kiri River, Mentulik Village, Kampar Kiri Hilir District Kampar Regency, Riau Province Reni Agustin; Deni Efizon; Efawani Efawani
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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ABSTRACTHemibagrus nemurusis one of freshwater fish that inhabit the Kampar Kiri River. This research aims to determine type of food present in the fish’s stomach. To understand the type of food consumed by H. nemurus, a research has been conducted in July to August 2019. Sampling was conducted 4 times, once/ 2 weeks for a two months period. The fish was captured using nets. There were  65 fishes captured, but only   47 fish have full stomach. The analysis was conducted using a gravimetric method. Stomach contents was analysis as a basis to calculate the  Preponderance Index (PI). Results shown that the main food of H. nemurus is fish (PI 67%), the complementary food is plant remains (PI 13%), unidentified debris (PI 13%) and insect (PI 5%), While the additional food is crustacean (PI 2%). Data obtained indicate that H. nemurus is a carnivorous fish. Keyword: Catfish, Feeding Habit, Preponderance Index, Gravimetric Method
COMMUNITY STRUCTUREOF BIVALVES IN PULO PANE WATERS SOSORGADONG DISTRICT CENTRAL TAPANULI REGENCY NORTH SUMATRA PROVINCE Johen Esaripa Gultom; Gultom Gultom; Syafruddin Nasution
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 February-April of 2019 in Pulo Pane waters of  Sosorgadong District in Central Tapanuli  Regency of North Sumatra Province. The aims are to determine the community structure of bivalves includes: Species, abundance, relative abundance, diversity index, uniformity index, dominance index, similarities index and patterns of distribution. Sampling was done by using line transect method at 3 stations. The result found 6 families with 6 species of bivalves namely Anadara antiquata, Trachycardium subrugosum, Atactodea sp., Crassostrea sp., Donax sp.and Polymesoda erosa. The abundance value was in the range of 3.87 to 9.80 Ind/m2. Diversity index values ranged from 0.73 to 0.79 is relatively low, whereas the uniformity index values ranged from 0.69 to 0.77 that was categorized in balance condition, dominance index values ranged from 0.48 to 0.64 indicating there was a species dominantly, similarity index values ranged between 91-100% indicating nearly similar pattern. The distribution value pattern ranged from 0-10 with a clumped distribution pattern. Keywords: bivalves, Community Structure, Pulo Pane 
The Effect Of Immersion Eggs Using Thyroxine Hormones With Different Doses On Egg Hatchabillity, Growth, and Survival Rate Of Sheat-Fish Larvae (Ompok rhadinurus Ng) Srimenda Br Ginting; Sukendi Sukendi; Nuraini Nuraini
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
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AbstractThis study was conducted on September-October 2019 in fish hatchery and Breeding laboratory, fisheries and marine faculty of RiauUniversity, Pekanbaru. The aim of this study wasto determine the effect of different thyroxine hormone doses on hatching rate, growth and survival rate of sheat-fish (ompok rhadinurus Ng). This study used a factorial complete random match (CRD) with 4 treatments and 3 replications. Different doses used on this study were; P1 (0 mg/L), P2 (0.05 mg/L), P3 (0.10 mg/L) and P4 (0.15 mg/L). Immersion of sheat-fish eggs with thyroxin hormone for 24 hours with ± 250 of sheat-fish eggs (0.5 g) and incubated  in a jar. Sheat-fish larvae maintained for 30 days. The results showed that different thyroxine hormone doses affected (P < 0.05) to fertilization rate (92.06%), incubation (21 hours 36 minutes), hatching rate (91.71%), and survival rateof sheat-fish larvae (93.30%) But, didn’t affect to absolute length growth, absolute weight growth, and specific growth rate of sheat-fish larvae. The best doses thyroxine hormone to increase hatching rate, incubation time, and fertilization rate was 0,10 mg/L. Keywords: Sheat-fish, thyroxin hormone, fertilization rate, incubation time, hatching rate, absolute growth, survival rate
IDENTIFICATION OF SIDE CATCHING FISH (BYCATCH) GOMBANG FISHING GEAR IN MESKOM VILLAGE BENGKALIS DISTRICT RIAU PROVINCE Sulaiman, Ahmad; Yani, Alit Hindri; Bustari, Bustari
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 7, No 1 (2020): Edisi 1 Januari - Juni 2020
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ABSTRACT This research was conducted in October-November 2018 in Meskom village, Bengkalis District, Bengkalis Regency, Riau Province. The purpose of this research is to become a database for the types of fish caught bycatch (bycatch) fishing wagons that are operated in Meskom Village, Bengkalis District, Bengkalis Regency, Riau Province. The method used in study is a direct survey method by observing in the field by looking at fishing activities using a good fishing gear. Data collection is done by going directly to the field by carrying out arrests and interviews with good fisherman. Catches numbering 22 spesies consisting of various types of shrimp and fish. The total number of catches was 364,4 (kg) or as many as 328715 heads. Keywords :Gombang, Identification, Bycatch, Meskom Village
Growth Ring Pattern in the Otolith of Channa lucius from the Kampar Lama Oxbow Lake, Mentulik Village, Kampar Regency, Riau Province Sari, Fadhila Cynthia; 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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Abstract            Channa lucius or snakehead fishinhabit the Kampar Lama Oxbow Lake. This research aims to understand the pattern of otolith growth rings ofthat fish and it was conducted in July to August 2019. The fish were caught using fish trap, once/week. There were 58 fishes (38 male fishes and 20 female fishes). The otolith (sagita) were removed and manually shaved. Growth ring pattern was studied using a binocular microscope. Among the fishes captured, only 49 fishes have dark growth rings in their otolith.  The otolith length was 5.49-9.87 mm and their weight was 0.0212-0.0635 g. The number of dark ring in the otolith was 1-3. Result shown that the distance between the nucleus and the first dark ring ranges from 0.2-1.45 mm, indicating that the first dark ring were formed individually and they were not formed by periodical incident in the fish life. Water quality in the sampling area was good and it may be sufficient to support the life of C. lucius. Keywords :dark ring, channidae, growth pattern , sagita
PRODUCTIVITY OF PURSE SEINE UNIT AT THE SIBOLGA FISHERIES PORT Widya Angel Bancin; Arthur Brown; Ronald .M Hutauruk
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 7, No 1 (2020): Edisi 1 Januari - Juni 2020
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ABSTRACT            This research was conducted in July 2019 at the Sibolga Archipelago Fisheries Port. he purpose of this study is to calculate the productivity of purse seine vessels and fishermen, as well as determine the factors that influence fisheries productivity at the Sibolga Archipelago Fishery Port. Productivity of capture and annual purse seine capture units on 10 vessels has increased and decreased each year due to settings, weather and season. Productivity of capture and annual purse seine capture units on 10 vessels has increased and decreased each year due to settings, weather and season. The productivity of fishermen in the purse seine line has increased and decreased 10 units of vessels in the Sibolga Archipelago Fisheries Port because the number of fishermen does not match the weight of the ship. Factors that affect fishing productivity are the weight of the ship (GT) and the number of crew (fishermen). By obtaining the results of multiple regression equations is Y = -18221 + 728X1 – 48,8X2 + 0,00014X3. Keywords: productivity, purse seine fisihing gear, fishierse port Sibolga
Types andDensity of Microplastic in The Coastal Area of Pariaman Regency, Sumatera Barat Province Annesa Fista Savitri; Adriman Adriman; Eni Sumiarsih
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 7, No 1 (2020): Edisi 1 Januari - Juni 2020
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                    ABSTRAC  Pariaman Regency coastal area is affected by current and tide from Indian Ocean that contribute the presence of microplastic in that area. To understand the microplastic types and density, a research has been conducted in May-July 2019. There were 3 sampling sites (Pantai Mangguang, Pantai Ampalu and Pantai Gandoriah) and there were 3 plots (50x50 cm) placed in each site. Sediment inside the plot was scrapped 5 cm depth. The sediment was then sieved (5 and 1 mm mesh size), dried and soaked in 35% NaCl. The floating microplastics were then collected and identified using a dissecting microscope. Results shown that there were 4 types of microplastic present, they were film, fragmen, fiber and foam. The most common microplastic found was film (1,360item/m3). The density of microplastic found in the sampling site ranges from 400 - 1,840 item/m3. In the intertidal zone, the highest density of microplastic was found in the highest tidal level (2000 item/m3). Keywords: Plastic Pollution, Intertidal Zone, Sediment, Film.
Effect Of Bioijuk Density On Decreasing TSSIn Sail River Water Prisusan Permata Hati; Budijono Budijono; Eko Purwanto
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
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ABSTRACT Sail River is one of the Siak watersheds that have been polluted due to high levels of TSS. This study aims to determine the level of reduction in TSS levels by using different bioijuk densities. This research was conducted in March-April 2019. The method used was a completely randomized design (CRD), which was used as treatment, was bioijuk density. P¬1 (infrequent density), P2 (medium density) and P3 (meeting density), and 3 replications. The sampling location is selected in the inlet and outlet area. The results of the measurement of the average reduction in the highest TSS levels were found in P2, 207 mg / L with a reduction in effectiveness (EP) of 97%. From the results of the study, it was known that the density of different bioijuk did not significantly influence the decrease in TSS, levels in the Sail River water.Keywords : Bioijuk, Continuous Solids, Dissolved Solids, Turbidity, Bacteria

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