Endang Jamal
Program Studi Budidaya Perairan, FPIK-UNPATTI Jl. Mr. Chr. Soplanit, Kampus Poka-Ambon. 97233. Telp / Faks: (0911) 379196 / (0911) 379859

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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)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (410.984 KB) | DOI: 10.21534/ai.v17i2.58

Abstract

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)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (292.817 KB) | DOI: 10.21534/ai.v19i1.104

Abstract

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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Abstract

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
THE EFFECT OF DIFFERENT FEED ON THE SPAWNING PERFORMANCE OF MUD CRAB SCYLLA SERRATA BROODSTOCK Pattiasina, Bethsy J.; Jamal, Endang; Pattinasarany, Agapery Y.
Jurnal Akuakultur Indonesia Vol. 11 No. 2 (2012): Jurnal Akuakultur Indonesia
Publisher : ISSA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1015.759 KB) | DOI: 10.19027/jai.11.153-161

Abstract

Mud crab is one of the 12 aquaculture commodities of Ministry of Maritime Affairs and Fisheries. Control of reproduction to increase seed production through feed improvement, is one of the challenges and strategies in the mud crab aquaculture. Due to lack of knowledge about broodstock nutrition lead to producing rate of seeds still relatively low. This study aimed to obtain information on the kind of feed that has specific nutrient and plays a role in increasing the success of spawning and zoea survival. Mud crab of Scylla serrata with initial weight of 500.7±103.4 g, preferably under developed gonads were maintained in a fiber tank measuring length of 2.48 m, width 1.26 m, and a height of 60 cm which is partition sealed into 30×40×60 cm3 to put one crab. Tank was equipped with sand as a substrate as high as 15 cm and seawater system with flow rate of 1 L per six minutes and 25 cm high water. Treatments were consisted of: 1. PI (fresh meat fish of Decapterus sp. with dose of 5%), 2. PSC (fresh meat mixture of Decapterus sp. 1.8%, 3% of squid, and shrimp 1.2%), 3. PB (artificial feed dose of 10%) of BW, each treatment was repeated three times. Parameters measured were the duration of ovarian to mature, egg diameter, hatching rate, fecundity, and zoea production. Data were analyzed using ANOVA. The quality of larval measured by survival and larval fat and protein content. The results showed that crabs treated by PI and PSC showed faster to get mature compared to PB treatment (p<0.05). Hatching rate of larvae in PSC treatment was higher compared to PI and PB treatments (p<0.05). Furthermore, all treatments did not affect egg diameter, fecundity, and the number of zoea (p>0.05). In conclusion, crab which fed fresh meat (PI and PSC) could get mature earlier, and have high percentage of the larval hatching than those of fed by PB. In fact that larvae from broodstock feed of PI has survival as well as protein and fat content were higher than those of fed by PB.Keywords: spawning perform, broodstock feed, mud crab (Scylla serrata)