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Journal : Jurnal Airaha

Pertumbuhan dan Kandungan Karaginan Rumput Laut (Eucheuma) pada Spesies yang Berbeda Anton Anton
Jurnal Airaha Vol 6 No 1: Juni 2017
Publisher : Politeknik Kelautan dan Perikanan Sorong, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (464.455 KB) | DOI: 10.15578/ja.v6i1.21

Abstract

The Research aims to identify the species of Eucheuma that produce the best growth and caraginan content. The research method used is experimental design with this floating method with long line system. Analysis of the experiment using Completely Randomized Design (RAL) with 3 treatments namely; Sp 1 (E.cottoni), Sp2 (E.spinosum), and Sp3 (E.edule) each of 3 replications. Observed made are growth and caraginan content of each species by water quality parameters such as temperature, salinity, pH, current, nitrate, phosphate and water brightness. The results showed that the cultivation of Eucheuma seaweed from different species significantly affected the daily growth rate during the 6 weeks of the study period. BNT test results showed that all treatments were significantly different at 5% (P <0.05). The daily growth rate at the end of the study was highest at Sp2 (E.spinosum) treatment of 4.20%, second order of Sp3 (E.edule) treatment was 3.43% and the lowest in Sp1 (E.cottonii) treatment 1.90%. The analysis of the variety of caraginan content of Eucheuma seaweed from different species at the end of the study showed a very real effect. Furthermore, the effect on the BNT test results showed that all treatments were significantly different at the 5% level (P <0.05). The highest content of caraginan is Sp 1 (E.cottoni) equal to 61,54%, then Sp3 (E.edule) equal to 54,56% and the lowest at treatment of Sp2 (E.spinosum) equal to 46,64%.
Pertumbuhan dan Kandungan Agar Rumput Laut (Gracilaria spp) Pada Beberapa Tingkat Salinitas Anton Anton
Jurnal Airaha Vol 6 No 2: Desember 2017
Publisher : Politeknik Kelautan dan Perikanan Sorong, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (565.065 KB) | DOI: 10.15578/ja.v6i2.70

Abstract

The aims of this study was to know the salinity level which perform highest growth rate and agar contents on the Gracilaria spp in the homogen cultivation condition. This research was carried out in the Laboratory of SUPM Bone, and the Laboratory of faculty marine and fisheries science, Hasanuddin University, from July until October 2004. Fifteen peaces of wooden tanks with size 1 x 1 x 0.45 meters were used as experimental basins. Each basin contained sea water with 40 cm height. Gracilaria verrucosa, G. lichenoides, and G. gigas taken from the fishpond around the experimental location were used as experimental plants. Every basin was planted with 100 grams of seaweed using bottom method. The experimental design used was Randomised Block Design (RBD) with five salinity treatments, namely 10, 15, 20, 25, and 30 ‰. The results of this study showed that salinity of 20 ‰ (S3) and 25 ‰ (S4) gave highest daily growth rate, that was 2.40% and the highest agar contents (40.71%) was obtained at the salinity of 20 ‰ (S3).The daily growth rate of 10 permil (S1) salinity treatment reached its peak at week III, while the salinity treatment of 15 ‰ (S2), 20 ‰ (S3) salinity, 25 ‰ salinity (S4), and 30 ‰ salinity (S5) reached its peak in week IV.