Articles

Morphology and growth pattern of Wallago leerii obtained from Kampar River, Riau Putra, Ridwan Manda
Jurnal Ilmu Perairan ( Aquatic Science ) Vol 8, No 2 (2010)
Publisher : Jurnal Ilmu Perairan ( Aquatic Science )

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A study aims to understand the morphological characteristics and growthpattern of Wallago leerii obtained from the Kampar River has been conducted.Morphological characteristics studied were sex ratio, morphometrical and meristicalcharacteristics and also growth pattern (length-weight relationship, condition factorsand otolith) of the fish. During the sampling period, 346 fishes were caught (125males and 221 females). Body length and body weight of the males ranged from330 to1020 mm and 260-10500 gram, while that of the female was 300-920 mmand 140 - 8700 gram respectively. Sex ratio of the fish was 1 : 1.8, it means thatduring the reproductive activities, the number of female may more than the male (1male may fertilize 1.8 females).Equation of body length-weight relationship of the male was W = 384.0L0.068, , while that of the female was W = 374.5 L0,083, and that of all fishes (maleand female) was W = 378.8L0.073. Correlation coefficient (r) was 0.924 for themales and 0.950for females. It means that increasing body length is alwaysfollowed by increasing body weight and growth pattern of the Wallago sp wasallometric. Condition factor of the fish was 0.0517-0.2016, (0.0517-0.2016 formales and 0.0519-0.1447 for females). Based on these data, it can be concluded thatthe fish body was slightly compressed.Keywords : Wallago leerii, sex ratio, growth pattern,Otolith
Domestication and gonad maturation technique of Thynnicthys thynnoides Blkr obtained from the Kampar River, Riau Putra, Ridwan Manda
Jurnal Ilmu Perairan ( Aquatic Science ) Vol 7, No 2 (2009)
Publisher : Jurnal Ilmu Perairan ( Aquatic Science )

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A study aims to find out the domestication and triggering gonadal maturation techniques of Thynnicthys thynnoides obtained from Kampar River, Riau has beenconducted from June to August 2009. Fish samples were kept in 1 x 1 x 1 m cages,30 fishes/ cage. Fishes were fed on three types of food namely dried Tubifex, shrimppellet (without vitamin E addition) and shrimp pellet that is enriched with vitamin E(100 gram/ kg ). The food provided was 5% of total fish body weight/ day.Result shown that fish domestication can be conducted by keeping them in the cagesthat are placed in the area where the fish are captured. During the first week, fisheswere not fed and in the following weeks they were provided with the treated fed. Thebest result obtained in the fishes that are feed with shrimp pellet that is enrichedwith vitamin E. During the research period (8 weeks), 12 fishes were sampled and 5of them were in the 4th gonadal maturity level, their maturity indices was 15.603%,fecundity 19,516 eggs, egg diameter 1.07 mm and semen volume produced 0.945 ml.Key words : domestication, maturity indeces, fecundity egg diameter
PENGARUH KOMBINASI PENYUNTIKAN hCG DAN EKSTRAK KELENJAR HIPOFISA IKAN MAS TERHADAP DAYA RANGSANG OVULASI DAN KUALITAS TELUR IKAN PANTAU (Rasbora lateristriata Blkr) Putra, Ridwan Manda
Jurnal Perikanan Dan kelautan Vol 15, No 01 (2010)
Publisher : Jurnal Perikanan Dan kelautan

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This research aims to understand the effect of dosages combination of mixedhCG and hypophysis extract injection toward ovulation and egg quality of Rasboralateristriata Blkr. There were 5 treatments applied, namely PA= control (1 ml of NaCl 0,65 % /kg body weight), PB = hCG 400 IU/kg body weight + CPE 2 dosages,PC = hCG 600 IU/kg body weight + CPE 2 dosages, PD = hCG 800 IU/kg bodyweight + CPE 2 dosages, PE = hCG 1000 IU/kg body weight + CPE 2 dosages, PF= hCG 1200 IU/kg body weight + CPE 2 dosages. The best result for female fish wasthe combination of hCG 1000 IU/kg body weight + CPE 2 dosages and it shown7.16 laten time; 281 eggs/ ovulation, egg diameter increment 0.267 mm and matureeggs increase 16.67%.
PENGARUH KOMBINASI PENYUNTIKAN hCG DAN EKSTRAK KELENJAR HIPOFISA IKAN MAS TERHADAP VOLUME SEMEN DAN KUALITAS SPERMA IKAN PANTAU (Rasbora lateristriata Blkr) Putra, Ridwan Manda
Jurnal Perikanan Dan kelautan Vol 15, No 02 (2010)
Publisher : Jurnal Perikanan Dan kelautan

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This research aims to understand the effect of dosages combination ofmixed hCG and hypophysis extract injection toward volume and quality of semenof Rasbora lateristriata Blkr. There were 5 treatments applied, namely PA=control (1 ml of Na Cl 0,65 % /kg body weight), PB = hCG 400 IU/kg bodyweight + CPE 2 dosages, PC = hCG 600 IU/kg body weight + CPE 2 dosages,PD = hCG 800 IU/kg body weight + CPE 2 dosages, PE = hCG 1000 IU/kgbody weight + CPE 2 dosages, PF = hCG 1200 IU/kg body weight + CPE 2dosages. The best result for male fish was the combination of hCG 1000 IU/kgbody weight + CPE 2 dosages, the semen volume was 0.87 ml, spermconcentration was 18,43 x 10 9/ml, sperm viability was 88.67% and spermmotility was 86.00%
PENGARUH KOMBINASI PENYUNTIKAN OVAPRIM DAN PROSTAGLANDIN F 2 α (PGF 2 α) TERHADAP VOLUME SEMEN DAN KUALITAS SPERMATOZOA IKAN TAMBAKAN (Helostama temmincki CV) Putra, Ridwan Manda; Asiah, Nur
Jurnal Perikanan Dan kelautan Vol 16, No 02 (2011)
Publisher : Jurnal Perikanan Dan kelautan

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This research was aimed to know the effect of the best ovaprim andprostaglandin F2 α injection combination toward semen volume and spermatozoaquality of fish tambakan (Helostama temmincki CV). The result of this researchdemonstrated that the best injection combination was 50 % ovaprim + 50 % PGF2 (0,250 ml ovaprim + 1500 g PGF2  / kg of body), with a semen volume 1,10 ml,spermatozoa concentration 24.27x 10 9/ml, spermatozoa viability 87,23 % andspermatozoa motility 82,27 %)
PERTUMBUHAN RELATIF IKAN SELAIS (Ompok sp) YANG TERTANGKAP DI SUNGAI KAMPAR DAN SUNGAI SIAK, RIAU Putra, Ridwan Manda
Jurnal Perikanan Dan kelautan Vol 17, No 01 (2012)
Publisher : Jurnal Perikanan Dan kelautan

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A study on relative growth of Ompok sp obtained from the Kampar andSiak Rivers has been conducted on April to June 2011. This study aims tounderstand the similarity and differences of the fish that inhabit those rivers,Kampar River with good water quality and Siak River that with poor waterquality. There were 84 fishes from the Kampar River (in the Teratak Buluhvillage) and 31 fishes from the Siak River (in the Tapung village) were capturedin this study. The meristical characteristics were studied and the morphologicalcharacteristics were analyzed to understand the relative growth of the fish. Resultsshown that there were no difference in the meristical and morphologicalcharacteristics of the fishes obtained from both sampling areas and its indicate thatthe fishes sampled were belonged to a single species. Data also shown that almostall of fish’s body morphometrical characteristics grow isometrically to total lengthand it means that the fish was not showing any morphological changes as theygrow. However, in the wegth-length relationship, the b values of the fishes fromboth sampling area was less than 3 and its indicate that increasing in fish bodyweight was slower than the increment of fish total length. Based on data obtained,it can be concluded that there was no difference in relative growth pattern of fishliving in the Kampar and Siak Rivers.
POLA LINGKARAN PERTUMBUHAN OTOLITH IKAN GABUS (Channa Striata) DI PERAIRAN SUNGAI SIAK PROVINSI RIAU Putra, Ridwan Manda
Jurnal Terubuk Vol 37, No 02 (2009)
Publisher : Jurnal Terubuk

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This research was conducted from July to September 2008. It was aimedto understand the growth rings pattern in the otolith of Channa striata. Thirthyfour fishes were collected with variations sizes. Growth rings pattern in the otolithwas studied by shaving the otolith, following methods described by Windarti(2007). The number of rings were counted and their pattern were described.Results shown that growth ring pattern in the otolith is varied, the ringsare consisted of thick and thin rings. Many fishes have several thick rings aroundthe nucleus of the otolith, while few fishes have thin rings around the nucleus.These data shown that many fishes faced growth related problems when they areyoung as it is indicated by the presence of thick rings around the nucleus. It ispredicted that small/young fish may not be able to tolerate water quality changingdue to the presence of pollutant.
PEMATANGAN GONAD CALON INDUK IKAN SEPAT MUTIARA (Trichogaster leeri Blkr) DALAM KERAMBA DENGAN PADAT TEBAR BERBEDA Sukendi, Sukendi; Putra, Ridwan Manda; Asiah, Nur
Jurnal Perikanan Dan kelautan Vol 18, No 01 (2013)
Publisher : Fakultas Perikanan dan Ilmu Kelautan Universitas Riau

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This study aims to determine the best stocking solid in the gonad maturation of Tricho-gaster leeri Blkr in cages placed in ponds. Cage size used is 1 x 1 x 1 m were placed in thepond Fisheries and Marine Science Faculty, Riau University with a solid stocking respectivelyP1 = 30 fishes/cage, P2 = 40 fishes/cage and P3 = 50 fishes /cage. The fish were reared for 6(six) weeks, during maturation of fish feed shrimp pellets + vitamin E. Maturation observa-tions conducted each week by taking 20% of the samples. Parameters measured were maturitylevel, gonado somatic index (GSI), fecundity, egg diameter, semen volume, and mortality.The results showed that the best treatment was P1 = 30 fishes/cage produce attainment gonadmaturation (TKG IV) was 2 fishes, gonado somatic index (GSI) was 8.36 %, fecundity was1004 eggs, egg diameters was 0.66 mm, semen volume was 0.0173 ml and mortality was 2fishes.]Key wood:Trichogaster leeri, gonad maturation, fecundity, semen volume andmortality
THE EFFECTS DENSITY TOWARD GROWTH AND SURVIVAL RATE OF MOTAN (Thynnicthys thynnoides Blkr) Putra, Ridwan Manda
Jurnal Teknobiologi Vol 1, No 1 (2010)
Publisher : Jurnal Teknobiologi

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This research aim, to understand of effect of density toward growth and survival rate ofmotan fish (Thynnichthys thynnoides Blkr). Fingerlings were oftained from Kampar River(10,35 – 10,43 cm SL). Fingerlings were adapted for 14 days before they were cultured inthe floating net cage. The treatments applied were 40, 50 and 60 fishes/m3. Fishes werereared for 4 months and they were fed on fish pellet, 3 times/day. Results show that thebest results was obtained in density of50 fishes/m3 with absolute growth weight 8,61g, daily growth rate 0,54 %, absolute growth length 2,43 cm and survival rate 100 %.Keywords : Thynnichthys thynnoides, fingerlings, floating net cage
Stomach Content Analysis of Mystacoleucus padangensis in Waters Naborsahan River and Toba Lake, Tobasa Regency, North Sumatra Province Budiharti, Wahyu; Pulungan, Chaidir P; Putra, Ridwan Manda
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 1, No 2 (2014): Wisuda Oktober Tahun 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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Mystacoleucus padangensis is relatively small Cyprinids that commonly inhabit theToba Lake and surrounding waters. A study aims to understand the stomach contentand its relation with size, sex and level of maturity of gonads has been done onJanuary to April 2014. There were three stations, namely the Naborsahan River(Station I), river mouth of the Naborsahan River (Station II), and the Toba Lake(Stasiun III). There were 515 fishes captured, however only 52 fishes were used forstomach content analysis study as the other having almost empty stomach (stomachfullness index less than 50%. Parameters measured were Index of Preponderance(IP), type of food based on Total Length, sex, and maturity level. Results shown thatthe main food of this fish is Rotifera (IP 41.78%). Small fishes (less than 81 mm TL)tend consume Bacilliariophyceae (76.17%), medium sized (80 – 93 mm TL) fish tendto consume Cyanophyceae (39.87%), while the big fish (more than 139 mm TL)prefer to consume Rotifera 38.27-58.38%) and Xanthophyceae (52.51%). Based onsex, the male eat more Cyanophyceae (35.60%), while that of the female Rotifera(39.86%). Fish with relatively low maturity level (2nd and 3rd maturity levels) tend toeat Cyanophyceae (82.56%) and Bacilliariophyceae (76.29%) respectively, whilemature fish prefer Rotifers (81.58%). Based on data obtained, it can be concluded thatthe diet of M. padangensis was various, and it is related to body size, sex and gonadmaturity level.Keywords : Mystacoleucus padangensis, Stomach Content Analysis, PreponderanceIndex, Sumatera Utara