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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
 216   217   218   219   220 
Identification of Peat Swamp Water Gastropods in Sontang Village Bonai Darussalam District Rokan Hulu Regency Linda Rostiana; Eddiwan Eddiwan; 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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ABSTRACTPeat swamp waters in Sontang Village have experienced land-use changes, due to logging and forest burning activities, which are feared, will affect the type of Gastropods that live in the peat swamp habitat. This study aims to identify gastropods that live in peat swamp waters in Sontang Village. This research was conducted in April-May 2019, in the sampling areas 1, II and III. Sampling is done once a week for 1 month. The identification of Gastropod samples follows the identification of Rao (1989). The results of the study illustrate that the number of Gastropods caught was 102 individuals, from 2 species namely Belamya sp., As many as 32 individuals and as many as 70 individuals Pomacea canaliculata. Morphometric  Pomacea canaliculata (Snail Mas)  is  a  shell height  ranging  from  17-54.5  mm, shell  width of   about 8.81-49.2  mm,  aperture length of 4.45-29 mm, aperture width of 8-38.5 mm, and length insides range from 10.4 to 40 mm. While the Javanese Tutut type (Belamya sp.) Has morphometric: the height of the shell ranges from 7.41-28.82 mm,  the  width of the shell ranges from 8.56-21 mm, the aperture length of 3.94-10.25 mm, the aperture width of 4.75 -13.08 mm and length of the range of 6.73-18.31 mm. From the results of this study, Pomacea canaliculata is more commonly found and has a larger size than other types. Keywords: Gastropoda, Ampullariidae, Vivivaridae, Peat Swamp.
Biological Aspects of Reproduction Natural Betta Fish (Betta imbellis) in the General Fisheries Faculty of Fisheries and Maritime Affairs, University of Riau Dedi Purnomo; Windarti Windarti; Deni Efizon
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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ABSTRACTBetta imbellis is a small ornamental fish and they areinhabit the  Fisheries and Marine Science Faculty, Riau University. A study aims to understand the reproductive biologi of B. imbellishas been conducted from February-April 2019. Fish sampling were conducted 2 times/week. Parameters measured were sex ratio, gonad maturnity level, gonad somatic indexs (GSI), fecundity, and egg diameter. Total fish captured was 110 (39 males and 71 fermales). Sex ratio between male and fermale  was 1:2. There were  differences between male and fermale, there  was black pointed area in the body of male fish. The  male genital papila was elongated, while that of the female was   rounded. Male and female fishes in 1th, 2nd and 4th maturity levels were found.   The GSI of females ranged from 4.15-24.00% and while that of the males was 6.04-35.09%. The fecundity of the fish ranged from 52-72 eggs/fish and the fish was categorized as a total spawner. Keywords:     The black ponted area, Sex ratio, gonad maturity level, gonad somatic index, fecundity, total spawner                                       
SENSITIVITY ofLEMON (Citrus limon) SOLUTION TOWARD Edwardsiella tarda Pebri Radayani Saragih; Morina Riauwaty; Iesje Lukistyowati
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 Lemon (Citrus limon) is a fruit that can be used as an antimicrobial/antibacterial because it contains secondary metabolites, such as flavonoids, tannins, terpenoid, and asam sitrat. Edwardsiella tardawas pathogenic bacteriathat can cause diseases in cultured fish.This research was conducted from Mei to Juli 2019, at Parasites and Fish Disease Laboratory, Faculty of Fisheries and Marine, University of Riau. The purpose of this study was to get the sensitivity of lemon(Citrus limon) in inhibit he growth ofEdwardsiella tarda, the range of Minimal Inhibitory Concentration (MIC) and the lethal dose (LD50)of lemon (Citrus limon) solution against to (Pangasius hypophthalmus) with length 7-9 cm by immersion for 24 hours. Sensitivity test is using the method of KirbyBauer disk blank 6 mm disc with dose used were 100-0,3% and control Oxytetracyclin. The results showed that the sensitivity of Lemon solution towardsE. tardaat dose 100% with clear zone 14,96 mm and dose 0,3% with clear zone 6,00 mm.  At a concentration of 0,5% was determined as the MIC value with a bacterial density 265,33 CFU / mL.Dose LD50 lemon solution against catfish by immersion for 24 hours in 0,49%Keyword :(Citrus limon), Edwardsiella tarda, Sensitivity, Minimum Inhibitory Concentration, LD50
DEGRADATION CAPABILITY AND PRODUCTION OF BIOSURFACTANTOF CRUIDE OIL-DEGRADING BACTERIA FROM SEDIMENTSELAT BARU Miptahul Huda Wassyukur; Nursyirwani Nursyirwani; Dessy Yoswati
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
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                                          ABSTRACT   Petroleum pollution can originiate from oil spills during drilling, production, refining and transportation activities. One of the hardly to decomposed petroleum contaminants is hydrocarbons, once thehydrocarbons enter the marine environment, the chemical componend can be reduced by biological processes (bioremediation) using bacteria. The purpose of this study was to examine the ability of bacterial isolates from Selat Baru coastal sediments to degrade crude oil and produce biosurfactants. This research was conducted in August to October 2018. The ability of bacterial isolates to degrade oil and biosurfactant production was carried out in the Marine Microbiology Laboratory and Marine Chemistry Laboratory, Department of Marine Sciences, Faculty of Fisheries and Marine, University of Riau. Experimental method was used in this research.. Nine isolates of crude oil degrading bacteria were provided from previous researchers, namely isolates 11p31 (1A), 33p31 (3A), 22p41 (10A), 22p42 (4B), 33p31 (5B), 12p32 (9B), 22p31 (1C), 11p41 (9C), 31p41 (12C). Each isolate was examined the ability to degrade crude oil at  concentration of 1% (0.5 ml), 2% (1 ml) and 3% (1.5 ml). The highest crude oil degradation ability was at 1% concentration by isolates 22p41 (10A) and 11p41 (9C), and for 2% concentrations by isolates 33p31 (5B) and 3% concentrations by bacterial isolates 33p31 (3A). All bacterial isolates were found to produce biosurfactan through the Oil Speading Assay. Emulsifikation test using kerosene indicated kerosene. where the highest emulsification in test 1 is isolate 33p31 (3A). Then in test 2 the highest emulsification value was shown by isolate 33p31 (3A). In Test 3 the highest emulsification value was isolate 11p41 (9C).  Key words:(1)Oil pollution,(2)Degrading,(3)Cruide oil,(4)Biosurfactan,(5)Emulsification  
MAPPING OF MANGROVES CHANGE AREA AND THE DENSITY OF MANGROVE IN ANAK SETATAH VILLAGE SUB-DISTRIC OF RANGSANG BARAT DISTRICT OF KEPULAUAN MERANTI RIAU PROVINCE Halida Sisda Harahap; Elizal Elizal; Efriyeldi Efriyeldi
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 This research was conducted in February 2019 in Anak Setatah village, Sub-distric of West Rangsang, District of Kepulauan Meranti, Riau Province and was aimed to find out the change of area and the density of mangrove this time. The research was conducted by survey method. The quantitative method was used on the change of mangrove forest area observation. The result of image data processing showed that mangroves area in Anak Setatah Village had decrease of area in 2006-2011 about 3.77 ha and there was an increase of area in 2011-2016 about 116.88 ha. The density of mangrove in Anak Setatah Village has the tight and medium density type. According to Mangrove Quality Standards, the density are still in Good category.  Key words : Mangrove, Change of Area, Density, Anak Setatah
Types and Abundance of Peripyhton in The Plastic Substrate in The Sail River, PekanbaruCity, Riau Province Syada Nopriadi Akbar; Tengku Dahril; Asmika Harnalin Simarmata
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
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ABSTRACTPeriphyton is a sessile microscopic organism that attach on certain substrate. Research aims to determine the type and abundance of periphyton on plastic substrate has been carried out in April-May 2018 in the Sail River. There were three sampling stations, namely S1 (in the upstream), S2 (in the middle) and S3 (in the downstream). Samplings were conducted once/week for a 3 weeks period. The periphyton samples are brushed from the plastic substrates (8x6) cm2. The number of substrates in S1, S2 and S3 were 5, 4, and 3 pieces respectively. Water quality parameter measured were water current, temperature, transparency, pH, dissolved oxygen, free carbon dioxide, nitrate, and phosphate. Results shown that there were 33 types of periphyton present and they were belonged 4 classes, namely Bacillariophyceae (13 species), Cyanophyceae (10species), Chlorophyceae (9 species) andEuglenaphyceae(1species). The abundance of periphyton in the plastic substrate in the S1 was 15,658 cells/cm2, in S2 was 22,095 cells/cm2and in S3 there was 30,799 cells/cm2.The water quality parameters were as follows: water current 0.07-0.69 m/s. transparency 6.03-7.67 cm, temperature 29-300C, dissolved oxygen 4.8-5.7 mg/L, free carbon dioxide13.6-14.6 mg/L, nitrate 0.29-0.38 mg/L, phosphate 0.34-0.54 mg/L. Based on the type of peryphyton present, indicate the trophic state of the Sail River as eutrophic. Keywords: Lotic, sessileorganism, water quality, trophic state
THE EFFECT OF ADDITION PAPAIN ON FEEDOF GROWTH AND SURVIVAL RATE OFVANNAMEI SHRIMP (Litopenaeus vannamei) IN AQUAPONIC RESIRCULATION SYSTEMS Amriyani, Dessy; Pamukas, Niken Ayu; Putra, Iskandar
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
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ABSTRACT            The aim of the study was to determine the optimal dose of papain in feed to increase growth and survival rate of vannamei shrimp (Litopenaeus vannamei)in aquaponic recirculation systems. Culture vessel in the form of tarp of 50 x 50 x 50 centimeters of 12 tarp with stocking density of 20 shrimp/m3. This research was using experimental method by completely random design (RAL) one factor with four treatments and three replications, the treatments were by giving papain in feed with different dose. The treatments were : P0= without papain, P1= 3 % , P2= 3,3 %, P3= 3,6% . The results showed that the addition of papain in feed with different dose, showed highly effect (P<0.05) on the total weight, specific growth rate, and survival rate. The best growth rates was found in treatment P1 with total weight: 0.53±0.04gram, specific growth rate: 0.92±0.01 % per day, and survival rate: 78.33±7.63%. Keywords: Vanname shrimp, Papain,Growth
SENSITIVITY ofLEMON (Citrus limon) SOLUTION TOWARD Edwardsiella tarda Pebri Radayani Saragih; Morina Riauwaty; Iesje Lukistyowati
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

ABSTRACT Lemon (Citrus limon) is a fruit that can be used as an antimicrobial/antibacterial because it contains secondary metabolites, such as flavonoids, tannins, terpenoid, and asam sitrat. Edwardsiella tardawas pathogenic bacteriathat can cause diseases in cultured fish.This research was conducted from Mei to Juli 2019, at Parasites and Fish Disease Laboratory, Faculty of Fisheries and Marine, University of Riau. The purpose of this study was to get the sensitivity of lemon(Citrus limon) in inhibit he growth ofEdwardsiella tarda, the range of Minimal Inhibitory Concentration (MIC) and the lethal dose (LD50)of lemon (Citrus limon) solution against to (Pangasius hypophthalmus) with length 7-9 cm by immersion for 24 hours. Sensitivity test is using the method of KirbyBauer disk blank 6 mm disc with dose used were 100-0,3% and control Oxytetracyclin. The results showed that the sensitivity of Lemon solution towardsE. tardaat dose 100% with clear zone 14,96 mm and dose 0,3% with clear zone 6,00 mm.  At a concentration of 0,5% was determined as the MIC value with a bacterial density 265,33 CFU / mL.Dose LD50 lemon solution against catfish by immersion for 24 hours in 0,49%Keyword :(Citrus limon), Edwardsiella tarda, Sensitivity, Minimum Inhibitory Concentration, LD50
types and abundance of periphyton attached in the lotus leaves at the Bandar Kayangan Reservoir Pekanbaru, Riau Province Framindo G. Napitupulu; Nur El Fajri; Adriman Adriman
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
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ABSTRACTPeriphyton is a sessile microscopic organism that attach on certain substrate. A research aims to understand types and abundance of periphyton attached in the lotus leaves present in the Bandar Kayangan dam, Pekanbaru has been conducted Februari 2019. There were 3 stations, around floating caged fish culture (Station 1), in the water closed to teak plantations (Station 2) and in the recreational area (Station 3). Samplings were conducted 3 times, once/week. Lotus leaves were collected and periphytons were obtained through scraping upper and lower surface of the leaf (5 ×5 cm). Periphyton collected were preserved using Lugol 1% and then were indentified. Result shown that there were 24 periphyton species present and they were belonged to classes, Cynanophyceae (3 species), Chlorophyceae (5 species), Bacillariophycea (11 species), and Euglenophyceae (1 species). Abundance of the periphyton ranged from 2,317-2,621 cells/cm2, diversity index was 4.148-4.242 and dominancy index was 0.054-0.060. Based on data obtained, it can be concluded that the Bandar Kayangan dam water was fertile..Keywords:lotic, sessile organism,  natural substrats, trophic state 
Distribution and Density of (Pilsbryochonca Exillis) in the Indragiri River, Lubuk terentang Village, Gunung Toar District, Kuantan Singingi Regency,Riau Provinve Reggy Erianti Putri; Eni Sumiarsih; M. Fauzi M. Fauzi
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 6 (2019): Edisi 2 Juli s/d Desember 2019
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ABSTRACTIndragiri River has high biological resources as necton, gastropods, plankton and the others. There are activities antropogenic can affect the distribution of Pilsbryochonca exillis. P. exillishas good ecological and economic potential. This study aimedto determine the distribution and density of P. exillis in the Indragiri river,  Lubuk Terentang village, Kuantan Singingi Regency, Riau Province. Sampling used the plot method and hand sampling, a plot divided into 9 sub-plots (9x3m). The results shown that the distribution of P. exillisis uniform and clumped. The distribution  based on  Morishitaindexis about 0,47 to 1,06. The highest density found in Station I was 1,05 ind/m2 and the lowest was found in Station III was 0,22 ind/m2. It is also known that the distribution and density of P. exillis in Indragiri River Waters are not disturbed. Keywords: River Organisms, Distribution,Characteristic, Density and Gastropods

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