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All Journal Jurnal Ilmu dan Teknologi Kelautan Tropis Jurnal Riset Akuakultur
Yasmina Nirmala Asih
Balai Besar Penelitian dan Pengembangan Budidaya Laut, Gondol
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Environmental Science Library & Information Science

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THE EFFECTS OF FASTING DURATION AND DIFFERENT DENSITIES OF GROUPER SEED TRANSPORTED IN CLOSED SYSTEM Suko Ismi; Daniar Kusumawati; Yasmina Nirmala Asih
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 8 No. 2 (2016): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (277.528 KB) | DOI: 10.29244/jitkt.v8i2.15829

Abstract

Indonesia is an archipelagic country with many locations suit for aquaculture. Grouper hatcheries are still concentrated in a few locations. Therefore, appropriate technology to transport live grouper seed is needed to ensure the survival and health of the seed. This study aimed to determine the duration of fasting before transportation and the optimum density of grouper seed during transportation. Transportation was conducted in closed system, transported using a car, for 24 hours. Grouper seed used for the experiment was cantik hybrid grouper, a cross-breed between female tiger grouper (Epinephelus fuscoguttatus) and male marbled grouper (Epinephelus microdon) with an average of size 7.0±0.32 cm. There were 2 experiments in this study. Experiment 1 was different durations of fasting before transprotation: A. 12 hours, B. 24 hours, C. 36 hours and D. 48 hours with the density of 150 seeds/boxes. The result of the first experiment was used to determine the experimental design of experiment 2, which consisted of 4 different densities per boxes: A. 125 seeds, B. 150 seeds, C. 175 seeds and D. 200 seeds. Both of the experiments were conducted in triplicates. The seeds were packed in plastic bags with a thickness 0.08 mm, length 120 cm x width 53 cm, filled with 10 liters of sea water. The results showed that the duration of fasting from 36 to 48 hours had the highest survival rate. Polinomial relation y = -0.0439x2 + 3.7696x + 17.075 with the value of R² = 0.966 illustrated that the optimum duration of fasting was 44 hours. There was a significant difference in densities of seeds during transportation (P<0.05), where the higher density lead to the lower survival rate. The density of 125 seeds/boxes resulted in the highest survival rate, 99.0 ± 1.0%.
PENGARUH KEPADATAN Nannochloropsis sp. PADA PEMELIHARAAN LARVA KERAPU BEBEK (Cromileptes altivelis) SECARA TERKONTROL Suko Ismi; Yasmina Nirmala Asih; Bejo Slamet; Ketut Suwirya
Jurnal Riset Akuakultur Vol 7, No 3 (2012): (Desember 2012)
Publisher : Pusat Riset Perikanan, Badan Riset dan Sumber Daya Manusia Kelautan dan Perikanan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (167.922 KB) | DOI: 10.15578/jra.7.3.2012.407-419

Abstract

Pembenihan kerapu bebek (Cromileptes altivelis) sudah berhasil dikembangkan di tingkat petani secara massal, namun terdapat beberapa kendala. Salah satu kendala pada saat pemeliharaan larva adalah seringnya terjadi kematian setelah penambahan plankton Nannochloropsis sp. Kematian tersebut disebabkan pemberian plankton yang tidak tepat baik kualitas maupun kuantitasnya sehingga menyebabkan turunnya kualitas air pada tangki pemeliharaan larva. Penelitian ini bertujuan untuk mengetahui penambahan optimal Nannochloropsis sp. sehingga diperoleh jumlah kepadatan Nannochloropsis sp. yang tepat sebagai green water dan persediaan pakan rotifer pada bak pemeliharaan larva. Perlakuan yang dicoba adalah penambahan Nannochloropsis sp. dengan kepadatan yang berbeda yaitu: A. Tanpa Nannochloropsis sp.; B. 100.000 sel/mL; C. 300.000 sel/mL; dan D. 500.000 sel/mL. Hasil yang diperolehpada perlakuan D (penambahan Nannochloropsis sp. 500.000 sel/mL) menghasilkan sintasan 26,8%; lebih tinggi dari perlakuan yang lain, berikut perlakuan C, B, dan A masing-masing 19,5%; 14,2%; dan 3,5% sedangkan panjang total larva umur 45 hari relatif sama antara 2,47-2,53 cm.
Co-Authors Bejo Slamet Daniar Kusumawati Ketut Suwirya Suko Ismi