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All Journal LIMNOTEK - Perairan Darat Tropis di Indonesia Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan
Mirna Dwirastina, Mirna
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Engineering Environmental Science Mathematics Physics

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POTENSI PRODUKSI PERAIRAN DENGAN PENDEKATAN BIOMASSA FITOPLANKTON DI SUNGAI KUMBE PAPUA Dwirastina, Mirna; Ditya, Yoga Candra
LIMNOTEK - Perairan Darat Tropis di Indonesia Vol 23, No 2 (2016)
Publisher : Research Center for Limnology

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Abstract

Sungai Kumbe merupakan salah satu sungai yang mengalir di Kabupaten Merauke Papua, Panjang sungai berkisar 300.42 km dengan luas tangkapan air sebesar 3765.90  km2. Informasi mengenai potensi dan pemanfaatan sumberdaya ikan serta keragaman biota di wilayah sungai Kumbe masih terbatas. Padahal informasi tersebut merupakan komponen terpenting dalam pengelolaan sumberdaya perikanan perairan umum. Oleh karena itu, penelitian di Sungai Kumbe dilakukan dengan tujuan untuk mengetahui kesuburan perairan menggunakan pendekatan biomassa fitoplankton dengan cara pengukuran volume sel geometri dan biomassa nilai klorofil. Penelitian dilakukan pada bulan Maret dan September 2014 dengan lima stasiun pengambilan sampel yaitu Wapeko, Yakau, Baad, Inggun dan Sakor. Hasil penelitian didapatkan bahwa komposisi kelas fitoplankton tertinggi terdapat pada Chlorophyceae 54.17%, Bacillariophyceae 31.25% dan Cyanophyceae 14.58%. Berdasarkan kelimpahan total fitoplankton bulan Maret-September 2014 berkisar 1238-5532 sel/L dan terendah Muara Inggun berkisar 248-1158 cell/l, Biomassa fitoplankton yang diukur dari volume sel geometri berkisar 0.01-0.004 sedangkan biomassa klorofil berkisar 0-54.17 mg/l. Dari penelitian yang telah dilakukan berdasarkan potensi produksi yang dilihat dari nilai biomassa maka  perairan Sungai Kumbe masih kategori cukup produktif.
HUBUNGAN PANJANG BERAT DAN FAKTOR KONDISI IKAN SEPENGKAH (Parambassis wolffi) DI SUNGAI ROKAN, PROVINSI RIAU Dwirastina, Mirna
Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Sainmatika Volume 10 No. 2 Desember 2013
Publisher : Faculty of Mathematics and Natural Science, Universitas PGRI Palembang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31851/sainmatika.v10i2.398

Abstract

             Sepengkah (Parambasis wolffi) is a member of order Perciformes, family Chandidae. This research was aimed to determine the relationship of length and weight and condition factor of sepengkah (Parambasis wolffi). The study was conducted from March to October 2011 in Sungai Rokan Kepulauan Riau. The result showed that a length-weight relationship of Sepengkah was positive allometric (b = 3,264) where the weight  is faster grow than the length. The condition factor of Sepengkah was around 3,2-4,0, it was showed that the body of Sepengkah was close to flat. Key words : fish length , fish weight , condition factor , Ikan Sepengkah , Rokan River
DISTRIBUSI SPASIAL TERHADAP KELIMPAHAN, BIOMASSA FITOPLANKTON DAN KETERKAITANNYA DENGAN KESUBURAN PERAIRAN DI SUNGAI ROKAN, PROVINSI RIAU Dwirastina, Mirna; Makri, Makri
LIMNOTEK - Perairan Darat Tropis di Indonesia Vol 21, No 2 (2014)
Publisher : Research Center for Limnology

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Abstract

Distribusi spasial fitoplankton sungai Rokan ini meliputi kelimpahan dan biomassa fitoplankton, hal ini menggambarkan karakteristik umum suatu badan air sehingga dapat digunakan untuk menentukan kesuburan perairan. Penelitian ini bertujuan untuk mengetahui distribusi spasial kelimpahan dan biomassa fitoplankton berdasarkan kesuburan perairan di Sungai Rokan Riau. Pengambilan contoh fitoplankton dilakukan selama empat kali dalam setahun yaitu bulan Maret, Mei, Juni dan Oktober tahun 2011. Contoh fitoplankton diambil menggunakan Kemmerer water sampler volume 500 mL dengan metode pengendapan dan diidentifikasi di laboratorium Balai Penelitian Perikanan Perairan Umum Palembang menggunakan mikroskop inverted dengan pembesaran 40 kali. Kelimpahan fitoplankton dihitung menggunakan metode Sedweigt Rafter dan biomassa dihitung berdasarkan kandungan klorofil-a perairan. Hasil penelitian menunjukkan bahwa di Sungai Rokan ditemukan tiga kelas fitoplankton yaitu Bacillariophyceae (19 genera), Chlorophycea (15 genera) dan Cyanophyceae (8 genera). Kelimpahan total fitoplankton berkisar 8.800 sell/L? 210.300 sell/L. Rata-rata kelimpahan fitoplankton tertinggi terjadi pada bulan Maret yaitu 210.300 sell/l dan terendah bulan Juni yaitu 8800 sell/l. Biomassa fitoplankton berkisar 0,56 mg/L ? 2,23 mg/L menunjukan eutrofikasi yang rendah. Parameter yang mencerminkan kesuburan perairan adalah kecerahan 17-52 cm, kekeruhan (TSS) <50 mg/L, kadar oksigen terlarut tidak kurang dari 4 mg/L, suhu 26,5 ? 32,7oC dan pH=7, serta total nitrogen (TN) berkisar 0,292 ? 0,98 mg/L dan total fosfat (TP) berkisar 0,063 -0,087 mg/L. Biomassa fitoplankton berkisar 0,56 mg/L - 2,23 mg/L. Kualitas perairan di Sungai Rokan masih dalam katergori bagus untuk kehidupan petumbuhan plankton.
Effects of different feeding rate on growth and condition factor of Chitala lopis Muslimin, Boby; Dwirastina, Mirna; Triwibowo, Yulianto; Rachmi Indahsari, Siti; Wibowo, Arif; Kurniawan, Kurniawan; Ginanjar, Rendy; Zamroni, Mochammad; Atmadi Prakoso, Vitas; Apriyanti, Dewi
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 12, No 3 (2023): DECEMBER 2023
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.12.3.34118

Abstract

Chitala lopis, also known as giant featherback, is a fully protected fish species on Indonesian official list due to the susceptibility to exploitation. Several studies showed that the conservation of aquatic resources, such as giant featherback, could be achieved through the implementation of fish farming practices and optimization of feed use. Therefore, this study aimed to determine effect of different feeding rate on growth pattern, performance, and condition factor of the first generation of giant featherback. The first generation of fish was collected from the natural reproduction of broodstock in the earthen ponds. A total of 5 samples were then randomly divided into three treatment groups and reared in the nine net cages installed in the earthen pond. The stocking density in each group was three fish per cage, and the treatments were carried out in triplicates. Feed given comprised fish bycatch as control (T0) (5% of the total weight) and freshwater shrimp, Caridina sp. with two different feeding rates, namely 5% (T1) and 7% (T2) of the total weight. The mean initial weight of all the samples in this study was 41 3.85 g. The results showed that the highest survival and absolute growth rates (29.96.38 g, 78 11%) were obtained in T1, but were not significantly different (p0.05). Furthermore, the highest average relative growth rate was also found in T1 (76.2818.61%) and significantly different compared to other treatments (p0.05). Growth pattern of fish at the beginning of the experiment was negative allometric (0.54), showing a low correlation (0.03), but became positive allometric (4.17) at the end, with moderate correlation (0.66). The results also showed that the highest condition factor was obtained in T2 (0.780.03), and there was a significant effect (p0.05). Based on the results, Caridina sp. had a positive and significant impact on the weight growth of the first generation of giant featherback compared to other studies.Keywords:CultivationFeeding rateGiant featherbackCaridina sp.Rasbora sp.
Effects of different feeding rate on growth and condition factor of Chitala lopis Muslimin, Boby; Dwirastina, Mirna; Triwibowo, Yulianto; Rachmi Indahsari, Siti; Wibowo, Arif; Kurniawan, Kurniawan; Ginanjar, Rendy; Zamroni, Mochammad; Atmadi Prakoso, Vitas; Apriyanti, Dewi
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 12, No 3 (2023): DECEMBER 2023
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.12.3.34118

Abstract

Chitala lopis, also known as giant featherback, is a fully protected fish species on Indonesian official list due to the susceptibility to exploitation. Several studies showed that the conservation of aquatic resources, such as giant featherback, could be achieved through the implementation of fish farming practices and optimization of feed use. Therefore, this study aimed to determine effect of different feeding rate on growth pattern, performance, and condition factor of the first generation of giant featherback. The first generation of fish was collected from the natural reproduction of broodstock in the earthen ponds. A total of 5 samples were then randomly divided into three treatment groups and reared in the nine net cages installed in the earthen pond. The stocking density in each group was three fish per cage, and the treatments were carried out in triplicates. Feed given comprised fish bycatch as control (T0) (5% of the total weight) and freshwater shrimp, Caridina sp. with two different feeding rates, namely 5% (T1) and 7% (T2) of the total weight. The mean initial weight of all the samples in this study was 41 3.85 g. The results showed that the highest survival and absolute growth rates (29.96.38 g, 78 11%) were obtained in T1, but were not significantly different (p0.05). Furthermore, the highest average relative growth rate was also found in T1 (76.2818.61%) and significantly different compared to other treatments (p0.05). Growth pattern of fish at the beginning of the experiment was negative allometric (0.54), showing a low correlation (0.03), but became positive allometric (4.17) at the end, with moderate correlation (0.66). The results also showed that the highest condition factor was obtained in T2 (0.780.03), and there was a significant effect (p0.05). Based on the results, Caridina sp. had a positive and significant impact on the weight growth of the first generation of giant featherback compared to other studies.Keywords:CultivationFeeding rateGiant featherbackCaridina sp.Rasbora sp.
Co-Authors Apriyanti, Dewi Arif Wibowo Atmadi Prakoso, Vitas Boby Muslimin, Boby Ditya, Yoga Candra Ginanjar, Rendy Kurniawan Kurniawan Makri Makri, Makri Rachmi Indahsari, Siti Triwibowo, Yulianto Zamroni, Mochammad