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Ria Azizah
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Agriculture, Biological Sciences & Forestry Environmental Science

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Potensi Rumput Laut Eucheuma sp. Terhadap Kepadatan Fitoplankton Chlorella sp. Ria Azizah; Indrihastuti Sulistianingtiyas; Delianis Pringgenies; Siti Rudiyanti
Jurnal Kelautan Tropis Vol 18, No 3 (2015): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (289.59 KB) | DOI: 10.14710/jkt.v18i3.530

Abstract

Chlorella sp. merupakan sumber makanan bagi ikan dan udang. Untuk menumbuhkan, Chlorella sp. maka diperlukan media kultur dengan nutrien yang baik. Eucheuma sp. merupakan rumput laut yang mengandung mineral - mineral yang bermanfaat bagi pertumbuhan Chlorella sp. Pemberian ekstrak Eucheuma sp. diharapkan dapat mendukung pertumbuhan Chlorella sp. Tujuan dilakukan penelitian untuk mengetahui pengaruh ekstrak Eucheuma sp. terhadap kepadatan Chlorella sp. dan konsentrasi terbaik dari ekstrak Eucheuma sp. yang menghasilkan kepadatan Chlorella sp. yang tertinggi. Penelitian ini dilaksanakan pada bulan Januari - Maret 2005 di Laboratorium Bioteknologi dan Eksplorasi Laut, Teluk Awur, UNDIP, Jepara dan Laboratorium Jurusan Perikanan, UNDIP, Semarang. Materi yang digunakan yaitu ekstrak Eucheuma sp., Chlorella sp. dan media kultur. Metode yang digunakan adalah eksperimental laboratories. Konsentrasi ekstrak Eucheuma sp. yang digunakan adalah : A (10 mg/L); B (100 mg/L); C (200 mg/L); D (300 mg/L); E (400 mg/L); F (500 mg/L); G ( tanpa pemberian ekstrak Eucheuma sp.).Hasil penelitian menunjukkan perlakuan D (300 mg/L) menghasilkan kepadatan Chlorella sp. tertinggi pada puncak populasi, yaitu 6,293 log sel/mL dan pada akhir populasi, yaitu 6,012 log sel/mL dengan konstanta pertumbuhan spesifik sebesar 0,161.Kata kunci: Kepadatan, Chlorella, EucheumaChlorella sp. is the source of food to prawn and fish. In order to grow Chlorella sp. so need a culture media with a good nutrient. Eucheuma sp. is a seaweed it cantains benefit minerals for the growth of Chlorella sp. The giving of Eucheuma sp. it is to be hoped to support the the growth of Chlorella sp. This research is aimed to know the effect of Eucheuma sp. extract to density of Chlorella sp. and the best concentration of Eucheuma sp. extract produce the highest density of Chlorella sp. This research was conducted in January – March 2005 at the Laboratory of Biotechnology and Marine Exploration, Teluk Awur, UNDIP, Jepara and Laboratory of Fisheries Department UNDIP, Semarang. Materials used in this research consisted of Eucheuma sp. extract, Chlorella sp. and culture media. This research method used experimental laboratories. The concentration that used in this research : A (10 mg/L); B (100 mg/L); C (200 mg/L); D (300 mg/L); E (400 mg/L); F (500 mg/L); G ( without giving extract of Eucheuma sp.). The result of this research showed that the D treatment produce the highest Chlorella sp. density at peak of population, that is 6,293 log sel/mL and the end of population that is 6,012 log sel/mL with specific growth rate 0,161.Keyword : Density, Chlorella., Eucheuma
Struktur Komunitas Zooplankton di Ekosistem Lamun Alami dan Berbagai Lamun Buatan Perairan Teluk Awur, Jepara Tasa Hibatul; Ita Riniatsih; Ria Azizah
Journal of Marine Research Vol 2, No 4 (2013) : Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (225.601 KB) | DOI: 10.14710/jmr.v2i4.3679

Abstract

Zooplankton are one component in the food chain as measured in relation to the productivity value of an ecosystem. This is because the zooplankton is a major connecting link between plankton and nekton. Teluk Awur Waters are shallow waters with depths less than 10 meters. These waters are also under pressure from various human activities. The aim of this research were to find out the community structure of Zooplankton on native and artificial seagrass ecosystems in Teluk Awur waters, Jepara. The method of this research was a case study method with the exploratory nature of data collection used Sample Survey Method. The location was set as a research Station was the Station 1, as the native seagrass, and Station 2, 3, and 4 as the artificial seagrass. Sampling was conducted every 2 weeks for 4 times of sampling of each 3 times making use planktonnet with mesh size 45 μm. Sampling was carried out horizontally in the morning on July 2012 to September 2012. The results obtained 37 genera on native seagrass, while on the third of artificial seagrass was obtained 51 genera. Abundance obtained on the native seagrass was an average of 3845,482 specs/L and on the artificial seagrass was an average of 3146,303 specs/L. Diversity of zooplankton showed the medium diversity, an average of 2,08 obtained on the native seagrass and an average of 2,15 obtained on the artificial seagrass. Homogenity obtained average of 0,48 on the native seagrass and 0,50 on the artificial seagrass which is showed that the level of homogeneity is in medium range. The index of domination on the native seagrass was obtained an average 0,51 which is showed that the level of dominance is in medium range and on the artificial was obtained an average 0,49 which is showed that the level of dominance is in low range.
PENGARUH PENGGUNAAN DIVINE CIGARETTE TERHADAP LAJU PERTUMBUHAN IKAN BANDENG (Chanos chanos Forskåll, 1775) Aulia Aisa; Sunaryo Sunaryo; Ria Azizah
Journal of Marine Research Vol 2, No 2 (2013) : Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (233.463 KB) | DOI: 10.14710/jmr.v2i2.2354

Abstract

Market demand for milkfish (C. chanos Forskåll, 1775) is continually to increase, since it is used for consumption and live bait for tuna and skipjack. The purpose of this research was to determine the effect of the Divine cigarette fumigation in fish feed on the growth of milkfish (C. chanos Forskåll, 1775). This research used experimental laboratories method with 4 treatments and 3 replications. The first treatment (A) was fumigation the Divine cigarette on fish feed for 5 minutes, the second treatment (B) for 10 minutes, the third treatment (C) for 15 minutes, and the fourth treatment (K) for without fumigation (control). Results of this research showed the highest specific growth rate was obtioned in treatment C which was equal to 2.51% daily. The lowest of mercury content was on the treatment A and C, resulting in decreased levels of mercury in milkfish (C. chanos Forskåll, 1775). Based on the result it can be concluced that the fumigation treatment of Divine cigarette for 15 minutes in fish feed can increased the specific growth rate of the milkfish (C. chanos Forskåll, 1775).
Co-Authors Aulia Aisa Delianis Pringgenies Indrihastuti Sulistianingtiyas Ita Riniatsih Siti Rudiyanti Sunaryo Sunaryo Tasa Hibatul