Garuda - Garba Rujukan Digital

Wenno, Petrus A

Pattimura University

Author-ID : 779554

Earth & Planetary Sciences Environmental Science

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Growth and Carrageenan from Kappaphycus alvarezii (Doty) at Different Depths and Their Possible Application in Other Locations Wenno, Petrus A; Syamsuddin, Rajuddin; Jamal, Endang
Aquacultura Indonesiana Vol 17, No 1 (2016)
Publisher : Indonesian Aquaculture Society (MAI)

This study aimed to evaluate the growth and yield of carrageenan from Kappaphycus alvarezii (Doty) which were cultured at different depths of water. The study lasted for 49 days, using two strains (green and brown), three initial weights (50, 100, 150 g), and five levels of depth (1, 2½, 4, 5½, 7 m). The results showed significant differences between growth rate and yield of carrageenan on the three treatments (P<0.01). The highest growth rate of both morphology types of green and brown occur on the same weight and depth i.e., at initial weight 100g and depth 2½ m, respectively at 5.68 and 6.05% day-1. The yield of carrageenan is likely to increase in depth with the highest value at a depth of 7 m, respectively 17.12% at green type and 14.63% at brown type. The results showed that reducing growth may increase the yield of carrageenan by the increasing of water depth. Based on these results, this study can be applied to another location as long as the quality of water allows farming activities.

Growth and Carrageenan Yield of Cultivated Kappaphycus alvarezii (Doty) in Deep Seawater Area of Saparua Bay, Central Maluku Wenno, Petrus A; Latumahina, Matheus Ch.A; Loupatty, Sven R.; Soumokil, Agustina W.; Jamal, Endang
Aquacultura Indonesiana Vol 19, No 1 (2018)
Publisher : Indonesian Aquaculture Society (MAI)

Cultivation of Kappaphycus alvarezii has been carried out by inverted pyramid method in the deep water of Saparua Bay. This study aims to analyze the daily growth rates, biomass productions and carrageenan yields of the green and brown strain of K. alvarezii with different depth of water by inverted pyramid method in deep seawaters. K. alvarezii with an initial weight of 100 g were planted successively at the depths of 1, 3, 5, 7 and 9 m during four growing seasons that last for 49 days in every season. The results showed that the highest growth rate and biomass production were on green strain at 1 m depth and brown strain at 3 m depth which were 4.18% and 749.29 g/m2 then 4.19% and 754.51 g/m2, respectively. While the highest carrageenan yield was on the green and brown strain at 9 m depth which were 16.53% and 14.85%, respectively. The carrageenan yields gradually increase with the increasing of water depths which contradict to growth rate and biomass production that showed the better results at lower depths (1 and 3 m). In conclusion, seaweed cultivation in deep waters has a positive impact on carrageenan yields in line with the increasing depths while the growth rate and the biomass production can be achieved higher at the lower depth.

EFEKTIVITAS METODE PIRAMIDA TERBALIK DAN METODE RAWAI DATAR UNTUK BUDIDAYA Kappaphycus alvarezii (RHODOPHYTA) DI PERAIRAN MALUKU Soumokil, Agustina W; Jamal, Endang; Wenno, Petrus A
TRITON: Jurnal Manajemen Sumberdaya Perairan Vol 14 No 2 (2018): Jurnal TRITON
Publisher : Departement of Aquatic Resources Management, Fisheries and Marine Science Faculty, Pattimura University

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Cultivation of red seaweed Kappaphycus alvarezii using the inverted pyramid method (IP) was carried out in the waters of Booi village, Saparua bay at the Central of Maluku regency. The effectiveness of the IP method can be compared with the conventional, longline (LL) method based on growth rate, biomass production and carrageenan yield. The IP method is operated on the surface layer of the deep waters to a depth of 10 meters, while the LL method is only operated in shallow waters at a depth of less than 10 meters. The results showed that growth and production of biomass with the IP method tended to decrease according to increasing depth, while the carrageenan yield increased. However, the carrageenan yield with the LL method increased in line with growth and production of biomass. It is seen that seaweed cultivation with the IP method is more effective than the LL method in terms of land area used, in addition to biomass production and the yield of carrageenan gained. ABSTRAK Budidaya rumput laut merah Kappaphycus alvarezii dengan metode piramida terbalik (PT) telah dilakukan di perairan Desa Booi, teluk Saparua di kabupaten Maluku Tengah. Efektivitas metode PT dapat dibandingkan dengan metode konvensional rawai datar (RD) berdasarkan laju pertumbuhan, produksi biomassa dan rendemen karaginan. Metode PT dioperasikan pada lapisan permukaan dari perairan dalam sampai kedalaman 10 meter, sedangkan metode RD hanya dioperasikan di perairan dangkal pada kedalaman kurang dari 10 meter. Hasil penelitian menunjukkan bahwa pertumbuhan dan produksi biomassa dengan metode PT cenderung berkurang sesuai dengan peningkatan kedalaman, sebaliknya rendemen karaginannya meningkat. Sementara rendemen karaginan dengan metode RD meningkat sejalan dengan pertumbuhan dan produksi biomassa. Terlihat bahwa budidaya rumput laut dengan metode PT lebih efektif dibandingkan metode RD dalam hal luas lahan yang digunakan, selain produksi biomassa dan rendemen karaginan yang diperoleh. Kata Kunci : Kappaphycus alvarezii, metode piramida terbalik, metode rawai datar, rendemen karaginan

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