1. International Seminar Fisheries and Marine Industrialization 2012

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TOXICITY OF INDUSTRIAL PALM OIL WASTE WATER AND SUB-LETHAL TEST TO OREOCHROMIS SP
(2014-01-29) Syafriadiman; Pamukas, Niken Ayu; Huri, Eryan
Research of Toxicity of industrial palm oil waste water and sub lethal test to Oreochromis sp. has been conducted on February 1st to March 1st 2009 in Aquaculture Technology Laboratory, Fisheries and Marine Science Faculty University of Riau. Objective of this research is to determine the concentration of a test material or the level of an agent that produces a deleterious effect on Oreochromis sp. during a short-time exposure under controlled condition. In this study, static 96-h acute toxicity tests were carried out using Oreochromis sp. as test organisms. Probit analysis using the computer software EPA and graphical method were used to caculate the 96-h LC50 depending on data suitability. Results of the 96-h LC50 and Biological Savety Level of the industrial palm oil waste water were 126,06 ml/l and 1.26 ml/l respectively.
THE DIFFERENCE OF PHYTOPLANKTON ABUNDANCE INSIDE AND OUTSIDE OF FLOATING CAGE IN BANDAR KHAYANGAN RESERVOIR PEKANBARU
(2014-01-30) Siagian, Madju; Simarmata, Asmika H; Sihotang, C
This research has been conducted from September – October 2011 in Bandar Khayangan reservoir. This research aims to understand the difference of phytoplankton abundance inside and outside the floating cage in Bandar Khayangan reservoir. Water samples were collected from 3 stations, namely station 1 (in the upstream of the floating cage area), station 2 (in the floating cage area) and station 3 (downstream of the floating cage area). There were 2 sampling sites in each station, in the surface and in 2.5 secchi depth. Sampling was done three times, once a week. Water quality parameters measured were temperature, transparency, pH, DO, CO2, Nitrate and Phosphate. Method used in this research is a survey method. Phytoplankton were sampled using plankton net no 25 and were preserved using lugol 1% and then identifield based on Davis (1955), Prescot (1972), Yunfang (1989), and Yamaji (1995). Result shown that the abundance of phytoplankton range from 10.534 – 42.297 cell/l. The highest of abundance in station 3 (after floating cage) was 42.297 cell/l and the lowest was in the station 1 (before floating cage area) was 10.534 cell/l. Water quality parameter values were as follow: Nitrate, 0.019 – 0.034 mg/l and Phosphate 0.035 – 0.062 mg/l. Based on phytoplankton data, it can be concluded that Bandar Khayangan water can be categorized as mesotrophic.
Sedimentological Aspects and Relative Sedimentation Rates in the Dumai Coastal Waters, Riau Province Indonesia
(2014-11-09) Rifardi; Edwar, Rufli; Syahminan; Suwarni; Renti, Butar Butar; Nunung, Fidiatur
The main purpose of this study is to reveal the sedimentary enviroments based on sediment characteristics and relative sedimentation rates. The obtained data are all based on analysis results of core samples taken from the Dumai Coastal Waters located off the north coast of Dumai City Indonesia. Bottom sediment samples were collected at 7 stations in the waters using gravity corer in March 2011. The samples were used for mechanical grain size analysis, ignition loss method, and bulk chemical analysis. In addition, the topmost one centimeter of core samples, which approximately 10 cc of wet sediments, was utilized for benthic foraminiferal study, namely, the study of of L/Tl values to infer the relative sedimentation rates. The Dumai Coastal Waters, Riau Province Indonesia is subdivided into three areas based on the general trend of sediment characteristics and relative sedimentation rates as following: 1) the central part of the waters is characterized by coarse-grained sediments, high relative sedimentation rates and dominantly terrigeneous sediments which under influence of rather strong tidal currents, 2) the eastern and western parts of the waters are characterized by relatively coarse-grained sediments, rather high relative sedimentation rates and relatively high biogeneous sediments which are influenced by longshore currents, and 3) the area off the coast (central part) is characterized by fine-grained sediments, the highest relative sedimentation rates. The area correspond to the boundary between the waters masses derived from Rupat Strait and of from Dumai Waters and is under influence of weak tidal current The distribution of crude oil content in sediments indicate that study area under influence of tidal and longshore currents. Judging from the distribution pattern of crude oil content in sediments, sediments polluted by crude oil were transported northwestward and northeastward by longshore currents and spread toward north by tidal currents, of the Dumai Coastal Waters. Key words : sedimentary enviroments, relative sedimentation rates, Dumai Coastal Waters
STUDY ON FISHING TECHNOLOGY OF BEACH SEINE NET AT KELURAHAN BUNGUS SELATAN, PADANG CITY AREA, INDONESIA
(2015-03-05) Rengi, Pareng; Brown, Arthur; Wenti, Sri
The research was conducted at Kelurahan Bungus Selatan beach from March, 27th till April 4 th 2012. Purpose of the research is to evaluate whether this beach seine fulfill the eco friendly technology criteria or its rentability is feasible to sustain as a kind of bussines. Based on set the eco friendly criteria, this gear was classified not a friendly technology and not feasible from bussines perspective. The fishers use this gear just for subsistence and maintain their hereditary tradition.
The Effect Of Fish Visceral Enzymes On Ripening Quality Characteristic Of Salt-Fermented Mackerel (Rastrelliger Sp)
(2016-04-02) Hasan, Bustari; Iriani, Dian; Densi, Asmoro; Rico, Mustafa
This research was intended to improve ripening quality characteristic of salt-fermented mackerel by addition of fish visceral enzyme. Two week ice-stored mackerel weighing 250-350 g each were taken from a fish market in Pekanbaru; and the fish were processed for salt-fermented fish in the Laboratory of Fish Processing Technology, Faculty of Fisheries and Marine Science, University of Riau. Three batches of salt-fermented mackerel were prepared respectively from whole gutted fish + enzyme (A), whole gutted fish (B) and whole ungutted fish (C). The fish were ripened at room temperature for four weeks; and changes in their sensory quality characteristics, NPN, FFA, Halophilic and LAB counts were evaluated every week. The results showed that sensory quality characteristics of salt-fermented fish differed among the three lots during ripening process (P<0.05). Lot A had better quality characteristics and shorter ripening time than lot B but less quality characteristics and longer ripening time than lot C. NPN and FFA values in lot A were also higher than lot B but lower than lot C (P<0.05). Total halophilic counts in lot A were not significantly different from lot C (P>0.05), but higher than that lot B (P<0.05). There was an increasing trend in halophilic counts of the three lots during ripening process. Total lactic acid bacterial counts of the three lots decreased gradually up to the end of ripening (P<0.05).
The Effect Of The Salinity Change On The Survival And Growth Of Nile Tilapia (Oreochromis Niloticus)
(2016-04-02) Tantu, Andi Gusti; Ratnawati; Ratnawati; Mardiana
The research is conducted on May to June of 2012 at Fishery Laboratory of University 45 Makassar. It is aimed at understanding the effect of salinity change on the survival and growth of Nile Tilapia O. niloticus. Research involves five treatments in which each treatment includes the salinity rates of 11, 17, 23, 29 and 35 ppt. Research is initiated by adapting Nile Tilapia O. niloticus juvenile to salinity 5 ppt for 10 days. The salinity of media water is then increased slowly to 11, 17, 23, 29, and 35 ppt until the day 20. At the day 21 to the day 31, the salinity of media water is decreased until it reaches 5 ppt. Result of research indicates that the highest level of survival and growth of Nile Tilapia O. niloticus is found at salinity 17 ppt, while the lowest is salinity 35 ppt. It seems that Nile Tilapia O. niloticus has the high adaptation rate at salinity 17 ppt (82.23 %) and provides the best growth rate (6.43 %/ day).
Assessment Of Heavy Metals (Al, Zn, Cu, Cd, Pb And Hg) In Demersal Fishes Of Kuala Tanjung Coast, North Sumatra
(2016-04-02) Simanjuntak, Charles; Djumanto; Rahardjo; Zahid, Ahmad
The presence of heavy metals in aquatic environment has been of great concern because of their toxicity when their concentration is more than the permissible level. This study was carried out to assess concentrations of six heavy metals (Al, Zn, Cu, Cd, Pb and Hg) in the muscle and liver of Chiloscyllium punctatum, Chiloscyllium indicum, Johnius belangeri, Nibea soldado, Otolithes ruber, Paratrypauchen microcephalus, Cynoglossus lingua, and Cynoglossus puncticeps from Kuala Tanjung coastal waters. The levels of Al, Zn, Cu, Cd and Pb were measured by Graphite Furnace Atomic Absorption Spectroscopy (GFAAS) technique; whereas Hg was measured by Cold Vapour Atomic Fluorescence Spectroscopy (CV-AFS) technique. The bioaccumulation of Al, Zn and Cu was predominant followed by Cd, Pb and Hg both in muscle and liver tissue of fish sample. The concentration range of Al, Zn, Cu, Cd, Pb and Hg in muscle was 0.01-16.9, 2.97-11.5, 0.01-0.37, 0.001-6.400,
The Collection Pharella Acutidens (Broderip & Sowerby, 1828) Smaller Than 20 Mm As An Indication For The Time Of Spat Settlement In The Mangrove Forest Of The Riau University, Dumai
(2016-04-02) Tanjung, Afrizal
Five years field observation, Januari 2006 – December 2010, were carried out to document the presence of Pharella acutidens (Broderip & Sowerby 1828) smaller than 20 mm in the mangrove forest of the Riau University Marine Station, Dumai. It was done in order to describe the seasonally of spat settlement. The purposive sampling technik was used in this work. The psycochemical parameters of its habitat were also monitored every month. Not every month of the year the bivalve smaller than 20 mm was presence, but only from Agustus until November at the year. It was found at special substrate at the habitat where the waters was contained more than 4,2 mgl-1 disolve oxygen, pH arround 7, salinity 8,5- 20,5 ppt. It is supposed that the spat settle on substrate from Februari until Mei every year.
Heavy Metals In Edible Intertidal Molluscs From The Middle East Coast Of Sumatera In Regard Of Its Distribution And Safe Human Consumption
(2016-04-02) Amin, Bintal; Nurrachmi, Irvina; Zulkifli; Abdi, Septian Januar
Determination of Pb, Cu and Zn concentrations in the soft tissues of edible intertidal molluscs collected from six locations in the midle east coast of Sumatera has been carried out in order to evaluate its concentration, pollution level and safe limit for human consumption. Heavy metals content analysis was carried out by using AAS Perkin Elmer 3110 in Marine Chemistry Laboratory Faculty of Fisheries and Marine Science, University of Riau. The results of the study showed that samples collected from the station with more anthropogenic and industrial activities exhibited higher concentration of metals than those from areas with less anthropogenic activities. The lowest metal concentrations were detected in Anadara granosa from Karimun waters whilst the highest concentrations were found in Strombus canarium from Batam waters. The PTWI limits would only be reached when people consumed more than 4.893; 4.590 dan 5.071 kg /week of blood cockle from Bagansiapiapi, Asahan and Karimun and 1.302 and 3.092 kg/week for Strombus canarium from Batam and Geloina coaxan from Selat Panjang waters respectively. Therefore the consumption of blood cockle from those areas was considered to be safe and there would be no risk for human consumption.
Fatigue And Stress For Jack Mackerel (Trachurus Japonicus) During Capture Process By Ecg Monitoring
(2016-04-04) Nofrizal; Ahmad, Muchtar; Arimoto, Takafumi
A simulation experiment was conducted in the flume tank to investigate fish stress and physiological condition during swimming in active sampling methods through electrocardiograph (ECG) monitoring. Jack mackerel, Trachurus japonicus of 18.68±0.90 cm fork length (average ± S.D., n = 90) was forced to swim in the flume tank with the swimming speed levels of 1.09-9.12 FL/s at 10, 15 and 22°C respectively. The heart rate was measured by impleting a pair of electrode at pericardial cavity region of fish, which was conected to digital oscilloscope via an bio-amplifier. The highest stress level was occurred at vicinity of the maximum sustained and prolonged swimming speed. This indicated that the heart rate was increasing steadily to reach 3.60 times greater than control value for 10°C, 4.03 for 15°C, and 4.20 for 22°C. The recovery time for post-exercise was monitored to be the longest (up to 543 min) at these swimming speed levels. The physiological conditions of jack mackerels are discussed in relation to the cardiac activities during active sampling gear process.
Coral Reef Rehabilitation In Marine Tourism Park Of Pieh Island And Its Surrounding Waters
(2016-04-04) Darmawan; Husrin, Semeidi; Alrizky, Muhammad
Pieh islandand its surrounding waters in West Sumatera Province has been recently declared as a marine tourism park. Covering a total area of 39,900 ha, this parkis rich by coral reef ecosystem, especially in five dedicated small islands: Pieh, Bando, Air, Pandan and Toran. Based on the identification and monitoring efforts carried out in 2010, more than 50 % of coral reef in this area was damaged. The objective of this paper is to describe the rehabilitation measures that have been carried out by LKKPN since 2010 to improve the conditions of coral reef ecosystem. The measures consisting of legal aspects (e.g. regulations and local rules), technical aspects (e.g. monitoring and transplantations), and other supporting measures have shown some improvement on the quantity of living coral reefs. Moreover, in order to boost the economy of locals, future plan to manage this marine tourism park will also be discussed.
Performance Of Red Cherry Shrimp Larvae (Neocaridina Heteropoda) With Different Initial Feed
(2016-04-04) Subamia, I Wayan; Himawan, Yogi
Ornamental Red cherry shrimp (Neocaridina heteropoda) is one of the commodities that are potential to be developed. The development will be conducted through rearing techniques to improve the performance of larvae. Improved maintenance techniques larvae can be done through several approaches, including the feed. The aim of this study was to determine the performance of red cherry shrimp larvae with different initial feed.. Research using Complete Randomized Design (CRD) with 3 treatments and 3 replications. Treatments are food type, there are (A) Water Plant, (B) Artemia, (C) Rotifera, (D) Artemia + water plants (E) Rotifera + water plants. Research vessel in the form of an aquarium measuring 14 X 14 X 14 cm3, with a volume of 1 liter of freshwater and equipped with aeration. The number of larvae per aquarium are 15 larvae that 5 days after hatching with an average length 0.3 ± 0.05 cm. Results showed that the highest achieving for absolute growth in the average length is in treatment D (Artemia + water plants) that are 0.94 ± 0.11 cm, and the highest specific growth lenght reached in treatment D, amounting to 0.032 ± 0.05 cm/day. The highest survival rate achieved in treatment D with 100%.
Natural Food Composition Of Various Types Sea Cucumber From Natuna Waters, Riau Island
(2016-04-04) Sukmiwati, Mery
The aim of this research is to investigate natural food composition of various sea cucumber. Samples were collected in the coastal waters of Natuna, Riau Islands In June 2009. Samples were taken from 2 location: Sepempang and Pengadah beach. The analysis methods use is identification of phytoplankton, frequency of presence phytoplankton and percentage volume of phytoplankton. Of ten species found 19 genus and detritus, include two families : Chrysophyta and Chyanophyta. The highest frequency of precentage volume of food is 13,5% by cymbrella from Sepempang beach and 13,6% by Cymbella from Pengadah beach
Reproduction Aspects Of The “Sepetang” Clam (pharella acutidens) In Dumai Mangrove Ecosystem, Riau
(2016-04-04) Efriyeldi
The Pharella acutidens population in Dumai mangrove ecosystem was decreasing due to increase in exploitation and mangrove degradation. This research aims to study the reproduction aspects and spawning season of the “sepetang” clam (Pharella acutidens). This study was carried out for 12 months, from November 2010 to October 2011 at Dumai mangrove. The “sepetang” clam samples were collected monthly from the Dumai mangrove ecosystem, from three stations. The clam were collected through sampling plots, 1 m x 1 m quadratic transects. Reproductive aspects such as sex ratio, gonadal development, gonadosomatic index (GSI), fecundity and oocytes diameter were studied. Results shown that sex of the “sepetang” clam can be determined at the size of more than 35 mm. Male and female ratio was 1 : 1.12 and no hermaphroditism observed. Histological analysis indicated that P. acutidens had four distinguishable gonad development in male and female clam, namely early active, late active, ripe and partially spawned. The fecundity increase as shell length increase and it correlated significantly with shell length. Mean oocytes diameter does not show any monthly pattern, except on May to June, the mean of oocyte diameter was relatively small. Based on gonadal development, GSI and mean oocyte diameter, the “sepetang” clam probably spawn continuously throughout the year with a peak spawning season between May-June
The Study Of Tofu Nuggets Fortified With Catfish (Pangasius Hypopthalmus) Protein Concentrates
(2016-04-04) Dewita; Syahrul; Affiandi, Dendi Tri
Nuggets fortified with Catfish (Pangasius hypopthalmus) was introduced to increase its economical value. Tofu was applied as a subsituent material to make nuggets. The aim of this study was to determine quality of tofu nuggets fortified with different concentrations of Catfish Protein Concentrates. Completely Random Design non factorial with three levels treatment of Catfish Protein Concentrates (0 %, 5 %, and 10 % from tofu weight) and three repetations were used. The results show that there was interaction between treatments of different level concentrations of Catfish Protein Concentrates to the proximate analyze and preference test of organoleptics on tofu nuggets. The best treatment of tofu nuggets was in 5 % of Catfish Protein Concentrates which contains water contents of 52,98 % and protein of 16,70 %, while organoleptic test showed that generally the panelists like flavor, texture, appearance and odor of the tofu nuggets fortified with Catfish Protein Concentrates, as many as 70, 75, 75, and 75 people, respectively
AMMONIA Absorption In Nitrogen Industry Wastewater By Microalgae Chlorella Pyrenoidosa, Nannochloropsis Sp. And Bacteria Pseudomonas Fluoresc
(2016-04-04) Marhaini; Faizal, Muhammad; Dahlan, Muhammad; Arinafril; Marsi
The growth of Chlorella pyrenoidosa microalgae, Nannochloropsis sp. and the bacterium Pseudomonas fluorescens on urea nitrogen industry wastewater has been investigated as an effort to study the potential of these microorganisms in the remediation of nitrogen industry wastewater. Microalgae and bacteria to be grown on media in water treatment plants with high levels of urea fertilizer NH3-N and by 50 percent urea for inhibitory Concentration (IC50). The results showed that the microalgae C. pyrenoidosa able to grow and tolerant on the levels 626.646 ppm of NH3-N and 1426 ppm urea, Nannochloropsis sp. NH3-N and urea 559.854 1398 ppm, whereas P. fluorescens 723.219 ppm and 1623 ppm urea. Microalgae and bacteria growth at that concentration can absorb C. pyrenoidosa NH3-N 53.46% and urea 58%, Nannochloropsis sp. NH3-N 57.5% and 53.71% urea, whereas P. fluorescens NH3-N 62.47% and 62.47% urea. Based on the results of these studies, microalgae and bacteria have potency to be developed as a bioremediation agent in absorbing nitrogen industry wastewater, on the bottom of the pool, deposition microalgae can be used as an alternative energy source.
Heat Distribution Analysis With 2 Dimensional Management Of Marine Tourism In Coastal Waters Of Bengkalis, Riau Province: Analysis Of Clostridium Perfringens Bacteria On Fish Mackerel (Cybium Commersoni)
(2016-04-04) Yoswaty, Dessy
Mackerel fish (Cybium commersoni) is one of the foodstuffs consumed by many people and contain high nutritional value, especially protein. Monitoring of marine water quality in coastal waters of Bengkalis to achieve sustainable management of marine tourism can be conducted bacteriological and protect fishery production that cause disease in humans. C. perfringens in mackerel (Cybium commersoni) allegedly increased the amount of pollution caused by domestic wastewater (sewage), anthropogenic activities and rapid development along the coastal waters of Bengkalis. Research objectives were to analyze C. Perfringens in mackerel (Cybium commersoni) as bioindicator of pollution so as to ensure the health and comfort of the local community and tourists. The research method is a survey method, using the media to TSC (Tryptose Sulphite Cycloserine). Mackerel samples obtained from Bengkalis waters, the study in March-April 2012, the data analysis of the total C. Perfringens by West (1989) and Fardiaz (1992). Observations of total C. perfringens on mackerel ranged between 3.1 x 104 to 6.0 x 106 cells/gram sample. Distribution of C. perfringens highest found in gills, compared to the digestive tract and mackerel meat. The results of the identification of bacterial isolates C. perfringen on mackerel fish are Gram-positive cells, stem shape, black in color, in-methyl, colonies, turned cloudy and gas bubbles are formed. C. perfringens on mackerel can grow at 37 oC. C. perfringens in fish mackerel are still below the threshold that could be categorized Bengkalis coastal waters has not been contaminated. Management of marine tourism in coastal waters of Bengkalis can be developed to improve public health and tourists, including protecting coastal ecosystems of Bengkalis.
Secondary Intermediate Hospes Of Clinostomum (Trematoda Digenea) In Riau Province, Indonesia
(2016-04-04) Riauwaty, Morina; Windarti
The aim of study was to understand the morphology of metacercariae of Clinostomum sp. found in freshwater fishes in Riau, Indonesia as second intermediate hospes. Freshwater fish were collected from Sail river, identified and examined for morphological observation. Encysted metacercariae of Clinostomum were excysted with a needle, fixed in 10% formalin and stained with Semichon’s Acetocarmine. Clinostomum parasites were observed under a stereomicroscope and numbers recorded. The result showed that infected freshwater fish were identified as Trichogaster trichopterus and prevalence of Clinostomum infection to the fish was17,1%. The infected fish had total length between 5,6-11cm, while the weight range was 2,01-28,64 g. The cysts were 1,5-2 mm in diameter, with a thin (c. 0,9 μm wide). There was no spinae in tegument dan had 2 suckers (oral and ventral), posteriorly located genitalia and paired digestive caeca. This digeneans were identified as the metacercariae of Clinostomum sp. This research is the first case of Clinostomum in freshwater fish in Riau, Indonesia
Reproductive Biology Of Belontia Hasselti From The Tambang Village, Kampar Regency, Riau
(2016-04-04) Putra, Ridwan Manda; Windarti; Simanjuntak, Esa F
Belontia hasselti is belonged to Belontiade family and commonly inhabit flood area and irrigation canals in palm tree plantation areas in Riau. This fish is commonly consumed by local people or reared as aquarium fish. However, information on reproductive biology of this fish is rare. To understand the reproductive biology of this fish, a research has been conducted on February-April 2012. There were 123 fishes (102 males and 21 females) captured (52 to146 mm TL and 2 to 68 grams BW). The sex ratio of male and female is 5:1. In each sampling time there were fishes with 1st, 2nd, 3rd and 4th maturity level. The Gonado Somatic Index (GSI) is around 0.01-10.46 %. Fecundity is around 142-10,041 eggs. Relationship between fecundity and TL is weak (R2=0.01), while the relationship between fecundity with BW is strong (R2=0.99). The egg diameter is 0.98-1.00 mm. Histological study shown that the maturity stages of eggs in the ovary is various. In the 1st maturity level, the ovary consists of non vitellogenic eggs (diameter 0.05-0.18 mm). In the 2nd maturity stage, the ovary consists of non vitellogenic and early vitellogenic (0.15-0.44 mm). In the 3rd maturity level, vitellogenic eggs occur (0.28-1.95 mm) and in the 4th maturity level, most of egg in the ovary are mature (0.3-0.5mm), but there are non vitellogenic and early vitellogenic eggs. This evidence indicates that B. hasselti may be a “partial spawner” and it may spawn their eggs throughout the year.
Mathematical Model
(2016-04-04) Mubarak; Harsanto, Puji; Galib, Musrifin
In this study the applicability of the hydrodynamics two-dimensional depth-averaged models is investigated. The simulations consists of two-dimensional, vertically averaged finite element hydrodynamics (RMA2), pollutant transport/water quality (RMA4). A constant and same value of Manning’s coefficient is specified throughout the whole domain for all models. Channel outlet PLTU dimension is 510 m in distance from coastal, and 5 m in width, which bed elevation -1 m and the discharge release 1.566 m3/s. Temperature of PLTU outlet is 34 °C and water temperature of coastal area is around 27 °C. The results from simulation describe that water temperature propagation produces the rising temperature at the area conservation, 0.89 °C at north side and 0.90 °C at South side of channel

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