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Growth, Morphology and Growth Related Hormone Level in Kappaphycus alvarezii Produced by Mass Selection in Gorontalo Waters, Indonesia

HAYATI Journal of Biosciences Vol 23, No 1 (2016): January 2016
Publisher : Bogor Agricultural University, Indonesia

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Abstract

The use of high quality seed can support the success of the seaweed cultivation. This study was conducted to evaluate the growth performance, morphology and growth related hormone level of brown strain seaweed Kappaphycus alvarezii seed produced by mass selection. Selection was performed in the Tomini Gulf, Gorontalo, based on mass selection of seaweed seed protocol with a slight modification in cut-off 10% of the highest daily growth rate. Selection was carried out for four generations. The selected 4thgeneration of seed was then used in cultivation performance test in the Celebes Sea, North Gorontalo, for three production cycles. The results showed that the selected K. alvarezii has higher clump weight and daily growth rate, longer thallus, more number of branches, and shorter internodes compared to the unselected control and seaweed from the farmer as external control. Furthermore, total sugar content, levels of kinetin hormone and kinetin:indole-3-acetic acid ratio were higher in selected seaweeds than that of unselected control and external control. Thus, mass selection method could be used to produce high growth of seed, and kinetin and indole-3-acetic acid play an important role in growth of K. alvarezii.

Seaweed Selection to Supply Superior Seeds for Cultivation

Jurnal Perikanan Universitas Gadjah Mada Vol 20, No 2 (2018)
Publisher : Universitas Gadjah Mada

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Abstract

Seaweed Kappaphycus alvarezii is a pre-eminent commodity in the field of marine and fisheries Indonesia which has been widely cultivated in coastal waters. Currently, the main problem faced by the cultivators is the limited stock of seeds, both in terms of quality and quantity. Selection is one method that is expected to increase the rate of seaweed growth quickly, cheap, easy, bulk, and sustainable.This study aims to determine the effect of selection on the growth of seaweed so that it can be done superior seed production for cultivation purposes. Seaweed cultivation was done in Kulu Village, Wori District, North Minahasa Regency, North Sulawesi by using long line method in April-June 2015. Selection is based on the daily growth rate parameter (DGR) and the selection method refers to the selection protocol that has been developed on K. alvarezii seaweed. Results showed that DGR of selection seedlings were higher (P <0.05) compared to controls, in which DGR of selection reached 5.87%/day, while DGR of control was 1.89%/day. From three seed production cycles (G-1 - G-3), the average DGR resulted from the selection was 5.53%/day and control 2.19%/day. Carrageenan content of selection result is relatively higher (47.66%) than control (31.28%) with mean for three cycle (G-1 - G-3) that is 43.55% for selection and 33.20% for control. Water quality (temperature, salinity, nitrate, phosphate) during the study is still within the appropriate range for seaweed growth. Therefore it is concluded that with the application of the method of seaweed selection can increase the daily growth rate and carrageenan content of seaweed K. alvarezii which directly affects the increase of production both in quantity and quality.

Distribusi Residu Logam Berat Timbal (Pb) dalam Organ Ikan Bandeng (Chanos chanos) PADA Salinitas Air Berbeda

Jurnal Perikanan Universitas Gadjah Mada Vol 8, No 1 (2006)
Publisher : Universitas Gadjah Mada

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Abstract

Determination of plumbum (Pb) residue distribution in the organs of milkfish, Chanos chanos reared in different water salinities was performed in a 2,000 l fiberglass container under laboratory condition. Water salinity levels as treatment were 10, 20, and 30 ppt. Milkfishes (100±14 g) obtained from local farmer were reared in 2,000 l fiberglass container at density of 40 individu/l. The fishes were exposured with Pb at 2 ppm. Sampling were conducted at 0 (initial), 7, 14 and 21 days after application of Pb. Pb was extracted from flesh, kidney, liver, intestine, and gill, and determined by atomic absorption spectrophotometer. Results showed that Pb residue in milkfish organs increase when water salinity decrease. The highest Pb residue concentration found in kidney followed by liver, intestine, flesh and gill.

IDENTIFIKASI MUSIM PRODUKTIF RUMPUT LAUT Eucheuma striatum DI PERAIRAN GORONTALO UTARA

Media Akuakultur Vol 13, No 1 (2018): (Juni, 2018)
Publisher : Pusat Penelitian dan Pengembangan Perikanan, Badan Penelitian dan Pengembangan Kelautan da

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Abstract

Minimnya informasi di tingkat pembudidaya mengenai waktu tanam yang produktif sesuai spesifikasi lokasi dan perubahan musim membuat produktivitas lahan dikelola kurang optimal. Identifikasi terkait dengan musim optimal dalam pemanfaatan lahan secara produktif sebagai bagian dari manajemen budidaya perlu dilakukan. Tujuan penelitian ini adalah untuk menentukan musim produktif rumput laut Euchuema striatum di wilayah perairan Teluk Langge, Gorontalo Utara. Penelitian dilakukan pada bulan Januari-Desember 2015 di Desa Langge, Kabupaten Gorontalo Utara. Unit percobaan disusun dengan rancangan acak kelompok pada tiga zona lokasi budidaya sebagai perlakuan, dengan tiga kali ulangan. Zona-1 berdekatan dengan daratan (jarak: 100-200 m), zona-2 dengan estimasi jarak 500-600 m, dan zona-3 di bagian ujung teluk dengan jarak 1.000-1.500 m dari daratan utama. Indikator utama yang diamati adalah pertumbuhan, penyakit, dan kualitas perairan. Rumput laut Eucheuma striatum yang dibudidaya dengan metode longline dengan bobot awal tanam 50 g/rumpun dan panjang tali ris 35 m. Pada setiap bentangan diberi penanda/label sebanyak 10 titik dan dilakukan pengamatan setiap interval waktu 45 hari. Hasil pengamatan selama tujuh siklus budidaya menunjukkan bahwa musim produktif rumput laut E. striatum di perairan Teluk Langge terjadi pada bulan Juni hingga September. Pertumbuhan rumput laut terbaik pada kawasan budidaya adalah yang dekat dengan daratan.Limited information available to seaweed farmers regarding the optimum planting time at a certain location and adaptation to seasonal changes contributed to low seaweed productivity. Therefore, an accurate planting calendar to optimize the use of productive coastal areas is vitally needed as part of the sustainable management of seaweed cultivation. The purpose of this study was to identify the productive season for Euchuema striatum in the Langge Bay water, North Gorontalo. The study was conducted from January to December 2015 in the Langge Village, North Gorontalo Regency. The experiment units consisted of three farming zone treatments with three replicates arranged in a block randomized design. Each farming zone was situated perpendicular to and at a certain distance from the shoreline (zone-1 = 100-200 m, zone-2 = 500-600 m, and zone-3= 1,000-1,500 m). The main variables measured were growth, disease occurrence, and water quality. Eucheuma striatum seeds were cultivated using a long-line method which the length of the main ropes used was 35 m and the initial seed weight was 50 g. Along each of the main rope, 10 seeds were marked, labelled and observed at every culture cycle (45 days) and lasted for 7 cycles. The results of observation suggested that the productive season for E. striatum is from June to November. The best area for an optimum seaweed growth in the study region is on the area close to the shoreline (zone-1).

SPONGE (Callyspongia sp., Callyspongia basilana, and Haliclona sp.) CULTURE WITH DIFFERENT INITIAL EXPLANT SIZES

Indonesian Aquaculture Journal Vol 3, No 2 (2008): (December 2008)
Publisher : Pusat Penelitian dan Pengembangan Perikanan, Badan Penelitian dan Pengembangan Kelautan da

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Abstract

Sponge global demand for industry and research needs far exceeds supply from the sea. Aquaculture is considered as the only viable method that can supply sufficient and sustainable quantities of sponges. Aquaculture method is also one of efforts to anticipate and avoid the over-harvesting of sponges in nature. However, culture methods need to be determined to provide the platform for commercial success. In this study sponges (Callyspongia sp., Callyspongia basilana, and Haliclona sp.) were successfully cultured by transplantation method using polyethylene net with the initial explant sizes of 1 cm, 3 cm, and 5 cm. The result showed that the sponge growth and survival rates were dependent on the species. Callyspongia sp. and Callyspongia basilana gave the highest growth and survival rates on the treatment 3 cm with the final explants length reached 12.20 ± 2.35 cm and 7.603 ± 0.93 cm and survival rates reached 98.33% and 36.67%. In contrast, Haliclona sp. had the highest growth (21.67 ± 0.25) and survival (95%) on treatment 5 cm. Nevertheless, among the three species, treatment using 3 cm and 5 cm of initial explant sizes did not show a significant difference. Therefore for the efficiency of explants use, the best initial explant length for culturing the three species of sponges is 3 cm.

PENENTUAN POLA MUSIM TANAM BUDIDAYA RUMPUT LAUT, Kappaphycus alvarezii DI PERAIRAN PARIGI MOUTONG, SULAWESI TENGAH

Media Akuakultur Vol 9, No 2 (2014): (Desember 2014)
Publisher : Pusat Penelitian dan Pengembangan Perikanan, Badan Penelitian dan Pengembangan Kelautan da

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Abstract

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HUBUNGAN PRODUKTIVITAS TAMBAK DENGAN KERAGAMAN FITOPLANKTON DI SULAWESI SELATAN

Jurnal Riset Akuakultur Vol 2, No 2 (2007): (Agustus 2007)
Publisher : Pusat Riset Perikanan, Badan Riset dan Sumber Daya Manusia Kelautan dan Perikanan

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Abstract

Studi telah dilakukan pada tambak-tambak di Kabupaten Bulukumba, Jeneponto, Maros, Pinrang, dan Takalar, Sulawesi Selatan bertujuan menelaah hubungan produktivitas tambak dengan keragaman fitoplankton serta analisis kualitas air dan tanah untuk mendukung pengelolaan tambak berkelanjutan. Pengambilan sampel fitoplankton, air, dan tanah pada lokasi yang representatif di kawasan tambak. Fitoplankton dikoleksi menggunakan plankton net no. 25. Sampel fitoplankton dipekatkan menjadi 10 mL kemudian diawetkan dalam larutan MAF. Identifikasi fitoplankton menggunakan mikroskop yang berpedoman pada buku identifikasi plankton dan perhitungannya menggunakan metode counting cell. Hasil penelitian menunjukkan bahwa kelimpahan fitoplankton berkisar dari 455—1.476 ind./L dan jumlah genus berkisar dari 8—14 genera. Berdasarkan indeks keragaman fitoplankton di Kabupaten Bulukumba, Jeneponto, Maros, Pinrang, dan Takalar tergolong kedalam kondisi stabil moderat. Keseragaman fitoplankton di Kabupaten Maros, Pinrang, dan Takalar lebih merata dibandingkan dengan Kabupaten Bulukumba dan Jeneponto. Peningkatan keragaman fitoplankton cenderung diikuti oleh peningkatan produktivitas tambak.This study was conducted in the brackishwater pond of Bulukumba, Jeneponto, Maros, Pinrang, and Takalar Regencies of  South Sulawesi. The aims of this research were to study relationship between productivity of brackishwater pond and phytoplankton diversity and also analyse soil and water qualities to support management of sustainable brackishwater pond. Simple random sampling was applied to phytoplankton, water and soil samples representative of brackishwater pond. Plankton net no. 25 was used to plankton collection then it was preserved in MAF solution. Phytoplankton were identified using microscope and counting cell method. Result of this research each station showed that phytoplankton abundance was 455—1,475 ind./L while genus number was 8—14 genera. The diversity indices of all station were moderately stable while ivenness indices of Maros, Pinrang, and Takalar more spread than Jeneponto and Bulukumba. The increasing of phytoplankton diversity in the water seem to influence the increasing of brackishwater pond productivity.

SELEKSI KLON BIBIT RUMPUT LAUT, Gracilaria verrucosa

Media Akuakultur Vol 6, No 1 (2011): (Desember 2011)
Publisher : Pusat Penelitian dan Pengembangan Perikanan, Badan Penelitian dan Pengembangan Kelautan da

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Abstract

Upaya peningkatan produksi rumput laut juga tidak terlepas dari permasalahan, yaitu:ketersediaan bibit unggul dalam jumlah yang cukup, adanya serangan  hama dan penyakit, dan faktor pembatas musim tanam. Bibit rumput lautunggul dapat diperoleh dengan menggunakan metode seleksi klon dan   bioteknologi (kultur jaringan dan rekayasa gen). Seleksi klon/massa dapat dilakukan dengan mudah dan dapat menghasilkan varietas bibit unggul dalampertumbuhan relatif cepat, daya tahan terhadap penyakit, dan lingkungan, serta keunggulan spesifik lokasi/kawasan. Keberhasilan budidaya rumput laut sangat dipengaruhi oleh kondisi lingkungan. Karena itu, kegiatan pemilihan bibityang berupa pelaksanaan seleksi klon harus memperhatikan faktor lingkungan perairan. Variasi kondisi lingkungan perairan di Indonesia yang relatif besar, maka pelaksanaan seleksi klon/massa sangat dianjurkan untuk dilakukandi setiap sentra produksi rumput laut. Tujuan seleksi klon ini adalah untuk mendapatkan bibit unggul varietas rumput laut Gracilaria verrucosa yang cepat pertumbuhannya. Sasaran penerapan metode seleksi klon ini adalah penyediaan bibit unggul untuk mendukung target peningkatan produksi. Selain itu, sasaran dari seleksi klon/ massa adalah penyediaan bibit untuk mendukung pengembangan kebun bibit di setiap sentra produksi.

RUMPUT LAUT JENIS CAULERPA DAN PELUANG BUDI DAYANYA DI SULAWESI SELATAN

Media Akuakultur Vol 2, No 2 (2007): (Desember 2007)
Publisher : Pusat Penelitian dan Pengembangan Perikanan, Badan Penelitian dan Pengembangan Kelautan da

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Abstract

Caulerpa merupakan salah satu komoditas rumput laut yang telah dimanfaatkan oleh masyarakat secara langsung sebagai makanan dalam bentuk lalapan dan sayuran. Di Sulawesi Selatan, Caulerpa yang dipanen dari laut sangat digemari bahkan telah diproduksi melalui usaha budi daya pada tambak-tambak terlantar di pinggir pantai. Produksi Caulerpa telah menjadi komoditas yang bernilai ekonomi dan diperjualbelikan di pasarpasar lokal dan telah menjadi sajian menu khas di sejumlah restoran menengah. Studi awal telah dilakukan di wilayah pesisir Sulawesi Selatan, yaitu untuk pengamatan lahan budi daya serta analisis proksimat terhadap spesies Caulerpa lentillifera, Caulerpa recemosa var macrophysa, dan Caulerpa sp. di tambak dan pantai. Terlihat bahwa kandungan air 3,09±1,03; abu 60,67±2,62; lemak 0,39±0,33; protein 7,93±2,32; serat kasar 13,33±8,33; dan BETN 17,67±3,88. Tekstur tanah dengan debu berpasir atau pasir berdebu cocok untuk budi daya Caulerpa, di mana budi daya dengan penerapan metode long-line kurang produktif.

ANALISIS KESESUAIAN LAHAN UNTUK PENGEMBANGAN BUDIDAYA RUMPUT LAUT DI GUSUNG BATUA, PULAU BADI KABUPATEN PANGKEP, SULAWESI SELATAN

Jurnal Riset Akuakultur Vol 5, No 2 (2010): (Agustus 2010)
Publisher : Pusat Riset Perikanan, Badan Riset dan Sumber Daya Manusia Kelautan dan Perikanan

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Abstract

Budidaya rumput laut sangat prospektif menjadi alternatif usaha oleh masyarakat pesisir dan pulau-pulau kecil. Pemilihan lokasi budidaya melalui kegiatan inventarisasi dan pemetaan potensi sumberdaya lahan merupakan tahapan awal yang penting dilakukan. Penelitian ini bertujuan menentukan kelayakan lahan perairan untuk pengembangan budidaya rumput laut di Gusung Batua, Pulau Badi Kabupaten Pangkep. Penelitian dilakukan dengan metode survai untuk mendapatkan data primer dengan pendekatan SIG dan data sekunder. Data dianalisis dengan metode PATTERN berdasarkan skoring dari beberapa variabel kunci untuk menentukan tingkat kelayakan lahan bagi pengembangan budidaya rumput laut. Hasil penelitian menunjukkan bahwa perairan Gusung Batua di Pulau Badi memiliki potensi lahan pengembangan budidaya rumput laut dengan tingkat kelayakan tinggi seluas 42,1 ha (4,2%), tingkat kelayakan sedang 660,3 ha (66,6%), dan tingkat kelayakan rendah 156,8 ha (15,8%).Seaweed cultures were very prospective for alternative job by community in coastal and small Island. Site selection of culture by inventory and mapping activity of waters resource make up initial stage of important done. This research aimed to determine of waters suitable for development of seaweed culture in Batua Reef, Badi Island, Pangkep Regency, South Sulawesi. Research conduct by survey method to obtain primary data with Geographical Information System (GIS) and secondary data. Data were analysis with PATTERN (Planning Assisstance Through Technical Evaluation of Relevant Numbers) method based on scoring of key variables to determine of suitable level of waters for development of seaweed culture. Result of research showed that Batua Reef waters have area potential for seaweed culture with most suitable were 42,1 ha (4.2%) as wide, moderately suitable were 660.3 ha (66.6%) as wide, and low suitable were 156.8 ha (15,8%) as wide.