Article Per Year (5 Year)
p-Index From 2020 - 2025
0
P-Index
This Author published in this journals
All Journal Chimica et Natura Acta Aquacultura Indonesiana
Latuihamallo, Magdalena
Departemen Kimia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Earth & Planetary Sciences Environmental Science Materials Science & Nanotechnology

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
BEBERAPA PARAMETER KIMIA YANG MEMPENGARUHI PERTUMBUHAN RUMPUT LAUT MERAH Kappaphycus alvarezii (DOTY) DI PERAIRAN LEBIH-DALAM Wenno, Petrus A.; Syamsuddin, Rajuddin; Latuihamallo, Magdalena
Chimica et Natura Acta Vol 2, No 3 (2014)
Publisher : Departemen Kimia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (416.982 KB) | DOI: 10.24198/cna.v2.n3.9162

Abstract

Secara konvesional, budi daya rumput laut memerlukan wilayah besar pada perairan dangkal, tetapi tidak semua air cocok untuk pembiakannya. Penelitian ini bertujuan untuk menguji pengaruh beberapa parameter kimia yang cocok untuk tumbuhnya ganggang merah Kappaphycus alvarezii di perairan laut dalam. Penelitian ini difasilitasi dengan beberapa rakit gantung yang ditempatkan secara diagonal, satu di bawah yang lain, pada kedalaman 100, 250, 400, 550 dan 700 cm. Pemotongan tunas dari strain hijau dan coklat digunakan sebagai bibit awal dengan berat 50, 100 dan 150 g. Semua tunas diikat pada tali nilon dengan diameter 1 mm yang sudah diatur pada tali dengan diameter 5 mm yang kemudian akan ditempatkan horizontal pada rakit gantung. Ruang antara dua tali panjang dan dua rumpun rumput laut diatur pada jarak 25 cm. Hasil penelitian menunjukkan bahwa sebagian besar dari laju pertumbuhan harian berkurang dengan meningkatnya kedalaman air. Rata-rata tertinggi dari laju pertumbuhan harian (DGR) dari kedua strain pada berat 100 g yaitu 5,28 ± 0,24% untuk hijau dan 5,45 ± 0,18% untuk cokelat. Analisis varians (ANOVA) dari DGR menunjukkan interaksi antara strain dan berat awal, antara strain dan kedalaman, dan antara berat awal dan kedalaman yang signifikan (P <0,01), namun antara strain, berat awal dan kedalaman tidak ada yang signifikan (P> 0,05). Zat kimia yang berhubungan dengan DGR berdasarkan analisis regresi multivariat yaitu salinitas, pH, amonium dan magnesium
The Influence of Various Light Intensity and Natural Feeds To The Growth of Abalone Haliotis squamata In Aquaculture System Latuihamallo, Magdalena
Aquacultura Indonesiana Vol 15, No 1 (2014): Volume 15 Issue 1 Year 2014
Publisher : Indonesian Aquaculture Society (MAI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (397.392 KB) | DOI: 10.21534/ai.v15i1.27

Abstract

Aquaculture technology of abalone is commonly using traditional method in which natural resources are used as the primary inputs. Recent studies however showed that light intensity could also enhance the apetite of abalone despite of food types and concentrations. This study was emphasized at investigating light intensity individually or sinergistically with food types and concentrations in enhance growth rates of abalone. A randomised complete factorial design with three different treatments of light intensities (0 luxes, 250 luxes, and 500 Luxes), two levels of food resources (Gracillaria licheinodes and Ulva fasciata), and three levels of food percentage (20%, 22.5% and 25%) for three replicates were held. The result showed that light intensity, food types and food concentration significantly affected the growth rates of abalone. Light intensity of 250 luxes with food type of Ulva fasciata at the level concentration of  22.5% resulted on the highest growth rate, both at laboratory level and in the field (sea). The highest growth rate of abalone was found in the outdoor system, maximum ages of 8.5 years, maximum length of 114 mm, and maximum weight of 44 g.
The Growth of Abalone (Haliotis squamata) In Net Floating Cage At Hulaliu Waters, Central District of Moluccas M.F Sahetapy, Jacqueline; Latuihamallo, Magdalena
Aquacultura Indonesiana Vol 15, No 1 (2014): Volume 15 Issue 1 Year 2014
Publisher : Indonesian Aquaculture Society (MAI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (256.654 KB) | DOI: 10.21534/ai.v15i1.28

Abstract

Growth of abalone Haliotis squamata were studied over 5 weeks in net floating cages at Hulaliu waters, the Central District of Mollucas. The objectives of the research were to analyze a daily growth rateand absolute growth of abalone Haliotis squamata in net floating cage. A total of 45 abalones were observed, with average initial weight ranged of 8.0-8.5 g. The abalones were treated with 3 types of natural foods, and 3 replications were held. The foods type treatment were using 2 species of macroalga namely Ulva sp., Gracillaria sp. and combination of Ulva sp. and Gracillaria sp.. The water quality was monitored twice a day included water temperature (28.1 – 29.9°C), pH (7-8.5), dissolved oxygen (8.2-10.1 mg/L) and water salinity (29.6-34 ppt). The highest daily growth rate of weight was gained in Ulva sp. treatment which had rate of 0.068 g/day at the fifth week, and also the absolute growth of weight was obtained in Ulva sp. treatment which had rate of 4.0 g in 56 days.
Co-Authors M.F Sahetapy, Jacqueline Syamsuddin, Rajuddin Wenno, Petrus A.