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The Oogenesis of Sclerectinian Corals Caulastrea furcata and Lobophyllia corymbosa MUJIZAT KAWAROE; DEDI SOEDHARMA; MAULINIA MAULINIA
HAYATI Journal of Biosciences Vol. 14 No. 1 (2007): March 2007
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (112.951 KB) | DOI: 10.4308/hjb.14.1.31

Abstract

Caulastrea furcata and Lobophyllia corymbosa are corals of order Sclerectinian. Caulastrea furcata is the only species of genus Caulastrea that could be found in Kepulauan Seribu and L. corymbosa is a rare species. The purpose of this research was to study sexual reproduction of the Sclerectinian coral. The result showed that the ovaries of C. furcata and L. corymbosa were developed in the mesentery, inside the mesoglea, and pinched by gastrodermis. Distinctive channel with trophonema like structure was found in both species as well as gamete which was spawned from polyp through distinctive channel. The gamete simply spawned trough gastrodermis, heading from mesentery filament to excretion track. Histological observation showed that there were four stages of gamet maturity level. However, gonad maturity level consisted of three stadia depended on the characteristic of the ovary. Key words: oogenesis, sexual, reproduction, corals Caulastrea, Lobophyllia, Seribu Island
Potensi Antelmintika Ekstrak Bakteri Simbion Spons Laut Terhadap Trichostrongylidae (Nematoda) Parasit Domba Muhammad Reza Faisal; Mujizat Kawaroe; Fadjar Satrija
Jurnal Ilmu Pertanian Indonesia Vol. 21 No. 1 (2016): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (387.765 KB) | DOI: 10.18343/jipi.21.1.41

Abstract

Trichostrongylidae (nematodes) parasitic infection of sheep were recently resistance to anthelmintics. Bioactive utilization of bacteria derived sponges had potential as anthelmintics alternative naturally against trichostrongylidae parasitic infections. The Aims of this study was to determine the activity of bacteria derived sponge extracts which produced anthelmintics bioactive compounds against sheep trichostrongylidae parasite. Bacteria derived sponges isolates which labeled S1 and S2 were extracted by methanol. Phytochemical test were conducted to determined characterization of bioactive compounds which potentially to inhibit larvae migration. Concentration which used to Larva Migration Inhibition Assay (LMIA) were 25, 50, 100, 250, and 500 µg/ml. Positive control treatment was used albendazole while negative control by physiological of NaCl. Both of extracts were contained toxicity to againts Artemia salina larvae which <1000 µg/ml concentration. The higher concentration of S1 and S2 extracts were affected to increase larvae migration. Both of extracts were potential to inhibit larvae migration which LC50 value were 165.63 µg/ml (S1) and 374.9 µg/ml (S2). The ability of extracts which inhibit larvae migration caused by bioactive compounds which contained triterpenoids in both of extracts then flavonoid compounds only by S1. Albendazole was showed a highest inhibitory activity which contained 95.5% of the total test nematode larvae.
Specific Growth Rate of Chlorella sp. And Dunaliella sp. According to Different Concentration of Nutrient and Photoperiod Mujizat Kawaroe; Tri Prartono; Adriani Sunuddin; Dahlia Wulan Sari; Dina Augustine
Jurnal Ilmu-Ilmu Perairan dan Perikanan Indonesia Vol. 16 No. 1 (2009): Juni 2009
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (224.994 KB)

Abstract

Light and nutrient are factors that support the microalgae growth rate besides COB2B, temperature, and salinity. Microalgae growth of Chorella sp. and Dunaliella sp. were observed to determine the influences of different nutrient concentration and photo period. Microalgae cultivation was located at laboratory using 100 mL Erlenmeyer. The specific growth rate of microalgae was observed for different nutrient concentration and photo period of light treatments. Using Guillard/f2 nutrient, the highest specific growth rate for Chorella sp. was 0.227/d and 0.289/d for Dunaliella sp. The highest microalgae specific growth rate influenced different photo period was 0.39/d and 0.329/d, respectively. Finally, the highest specific growth rate for both cultivated species of microalgae was observed at 2V nutrient concentration and 24 hour period of light treatment.Keywords : Spesific growth rate, photoperiod, nutrient, Chlorella sp., Dunaliella sp.
KAJIAN POTENSI BIOAKTIF KARANG LUNAK (OCTORALLIA: ALCYONACEA) DI PERAIRAN KEPULAUAN SERIBU, DKI JAKARTA Dedi Soedharma; Mujizat Kawaroe; Abdul Haris
Jurnal Ilmu-Ilmu Perairan dan Perikanan Indonesia Vol. 12 No. 2 (2005): Desember 2005
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1173.634 KB)

Abstract

Dalam upaya memperkaya khasanah pengetahuan karang lunak di Indonesia, dilakukan penelitian mengenai kajian potensi bioaktif karang lunak di beberapa pulau di Kepulauan Seribu. Selama penelitian, kegiatan ini berhasil mendata 39 spesies (12 genera, 4 famili) karang lunak yang tersebar di Pulau Pari, PulauPramuka, dan Pulau Kotok. Genus Lobophytum mendominasi perairan dangkal (3 m), sedangkan genera Sarcophyton dan Dendronephthya lebih kerap ditemukan di perairan dalam (10 m). Dari ke-39 spesies tersebut,ekstrak dari 30 jenis karang lunak menunjukkan bioaktivitas terhadap keberadaan bakteri patogen Escherichia coli dan Staphylococcus aureus. Ditinjau dari lokasi pengambilan contoh terhadap daratan utama, kandungan bioaktif karang lunak semakin tinggi bila semakin jauh dari daratan utama. Hal yang serupa berlaku untuk karang lunak yang hidup di kedalaman yang lebih dalam.Kata kunci: potensi, bioaktif, karang lunak, bakteri, Kepulauan Seribu.
Kultivasi Scenedesmus sp. Pada Medium Air Limbah Mujizat Kawaroe
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 16, No 2 (2011): June 2011
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/biota.v16i2.99

Abstract

Proses fotosintesis pada mikroalga membutuhkan CO2 dan cahaya matahari serta nutrien untuk pertumbuhannya. Kultivasi Scenedesmus sp. pada medium air limbah bertujuan guna mencukupi kebutuhan mikroalga akan nutrien dan mengurangi masukan dari bahan kimia yang terkandung dalam air limbah tersebut ke lingkungan. Kultivasi Scenedesmus sp. dilakukan selama tujuh hari pada medium air limbah industri tanpa penambahan nutrien. Hasil kepadatan tertinggi pada akhir kultivasi diperoleh pada medium air effluent senilai 8,033,333 sel/ml dengan berat kering 4,60 gr. Kultivasi mikroalga tersebut juga dapat menurunkan nilai dari Total Padatan Tersuspensi dan Terlarut serta penurunan kadar dari BOD, COD, Nitrit, Sulfit, Sulfat, besi, Krom, Tembaga, dan Seng. Kultivasi Scenedesmus sp. dapat dilakukan pada medium air limbah tanpa perlu penambahan nutrien.
Aktivitas Antibakteri Ekstrak Karang Lunak Sarcophyton sp. yang Difragmentasi dan Tidak Difragmentasi dari Perairan Pulau Pramuka, Kepulauan Seribu, Jakarta Mujizat Kawaroe; Dedi Soedarma; Hefni Effendi; Tati Nurhayati; Safrina Dyah Hardiningtyas
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 15, No 3 (2010): October 2010
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/biota.v15i3.2588

Abstract

Fragmented and non-fragmented soft corals showed antibacterial activities. Soft corals were gradually extracted using methanol, ethyl acetate, and hexane. Crude extract of the samples was tested its antibacterial activity, Minimun Inhibitory Concentration, toxicity (Brine Shrimp Lethality Test method), and phytochemicals. Overall, the antibacterial activity of crude extract of non-fragmented soft coral Sarcophyton sp. was higher than the crude extract of fragmented soft coral Sarcophyton sp. Crude ethyl acetate extract showed higher antibacterial activities. The ethyl acetate crude extract of non-fragmented soft coral Sarcophyton sp. is able to inhibit all tested bacteria is E. coli, S. aureus, P. aeruginosa and B.cereus, while the ethyl acetate crude extract of fragmented Sarcophyton sp. is unable to inhibit bacteria P. aeruginosa. Minimum inhibitory concentration extracts of non-fragmented Sarcophyton sp. in range 240−480 μg/disc. The 24-h LC50 extracts of fragmented and non-fragmented Sarcophyton sp. for Artemia salina were 149.50 ppm and 45.15 ppm, respectively. Bioactive compounds of fragmented and non-fragmented Sarcophyton sp. extract are steroid, flavonoid and alkaloid.
Perubahan Luas Penutupan Padang Lamun Di Kepulauan Seribu, DKI Jakarta Mujizat Kawaroe; Indra Jaya; Indarto H. S.; Dahlia Wulan Sari; Sundari Wening W.
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 15, No 1 (2010): February 2010
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/biota.v15i1.2641

Abstract

Seagrass is one of productive and economical marine ecosystem, but recently there are indications that this area is decreasing and every kind of damage is happening. The research was conducted to reveal the change of seagrass width area and to determine the suitable location for donor and acceptor of seagrass transplantation. Methods of research were collecting and analyzing the satellite image of the research location, bathymetri mapping and water quality parameter, and also determining environment charasteristics that suitable to be performed by counting Seagrass Transplantation Suitability Index (STSI). The results show that in year 1999-2004, the derivation area of seagrass was 678.300 m2. Pari island has depth range between 0-50 metres and the physics and chemical parameter of water have a good range where the seagrass can live. According to the analysis result of STSI, suitable areas for seagrass transplantation donor is station no. 5 and 6 for seagrass species of Enhalus acoroides and station no. 2 and 7 for seagrass species Thalassia hemprichii. The implication of this research is that the seagrass needs rehabilitation to overcome seagrass ecosystem for better condition.
Periode Pemijahan Spons Aaptos aaptos (Porifera: Demospongia) di Perairan Pulau Pari, Kepulauan Seribu, DKI Jakarta Mujizat Kawaroe; Dedi Soedharma; Rahmadsyah Deny Siregar
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 13, No 2 (2008): June 2008
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/biota.v13i2.2673

Abstract

The purpose of this research was to study spawning period of sponge Aaptos aaptosat Pari Island, Thousand Islands, DKI Jakarta. The result showed that spawningtime occurred at 17.00-18.00, and within that time the sponge closed their osculumto throw out the zygote leaving the body faster. The duration of spawning rangefrom 4 minutes to 41 minutes. Based on the lunar periode, spawning for spongeAaptos aaptos started from early new moon till few days after full moon. Spawningmostly took place during spring tides. Based on the PCA analysis, it was found thatwater temperature and pressure had strong correlation with spawning time.
Karakter Morfologis dan Ekologis Keong Potamididae (Gastropoda) dari Habitat Mangrove Gugus Pulau Pari, Jakarta Ucu Yanu Arbi; Mujizat Kawaroe; Ristiyanti M. Marwoto; Yaya Ihya Ulumuddin
Jurnal Kelautan Nasional Vol 17, No 2 (2022): AGUSTUS
Publisher : Pusat Riset Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2160.816 KB) | DOI: 10.15578/jkn.v17i2.8218

Abstract

Potamididae merupakan satu-satunya famili dalam Gastropoda yang semua anggotanya hanya dapat ditemukan berasosiasi dengan vegetasi mangrove. Penelitian mengenai keong Potamididae di gugus Pulau Pari bertujuan untuk mengetahui karakter morfologis dan karakter ekologis. Penelitian dilakukan tiga tahapan, yaitu tanggal 29 September – 2 Oktober 2012, tanggal 18 – 22 Desember 2012, dan tanggal 6 – 10 Maret 2013. Spesimen dikoleksi menggunakan metode handpicking dari lima stasiun sampling, yaitu Pulau Pari bagian barat, Pulau Pari bagian timur, Pulau Kongsi, Pulau Tengah dan Pulau Burung. Berdasarkan perbedaan karakter-karakter morfologis dan karakter-karakter ekologis tersebut, ditemukan tiga spesies keong Potamididae di gugus Pulau Pari yaitu Telescopium telescopium, Terebralia palustris dan Terebralia sulcata. Spesies T. sulcata ditemukan di semua stasiun dan dominan di delapan plot dengan persentase rata-rata di atas 95%. Spesies T. palustris ditemukan dominan di tiga plot dengan prosentase mencapai 97%. Spesies T. telescopium hanya ditemukan di satu plot yaitu di bagian barat Pulau Pari plot 1. Hasil pengukuran cangkang memperlihatkan variasi hanya pada T. palustris. Spesimen yang dikoleksi dari Pulau Burung Plot 2 memiliki ukuran cangkang rata-rata paling besar, yaitu berkisar 5,965-9,15 cm. Suhu yang bekisar 28 – 32 oC,  salinitas yang berkisar 31 – 33 ‰, tinggi genangan air yang berkisar 0-70 cm, jenis substrat yang didominasi oleh lumpur berpasir dan vegetasi mangrove yang didominasi oleh Rhizophora stylosa menjadi faktor fisika dan kimia perairan yang optimal bagi T. palustris dan T. sulcata.
PENGARUH PERBEDAAN pH PERAIRAN TERHADAP LAJU PERTUMBUHAN LAMUN JENIS Cymodocea rotundata Yudho Andika; Mujizat Kawaroe; Hefni Effendi; Neviaty Putri Zamani; Erniati; Erlangga; Saiful Adhar; Imanullah; Imamshadiqin; Cut Meurah Nurul 'Akla; Ayub Sugara; Bq Tri Khairani Ilhami
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 15 No. 1 (2023): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jitkt.v15i1.43331

Abstract

Penggunaan bahan bakar fosil yang terus berlangsung akan meningkatkan konsentrasi karbondioksida (CO2) di atmosfer. Asidifikasi laut terjadi akibat CO2 yang berada di atmosfer berdifusi ke lautan. Lautan mampu menyerap CO2 di atmosfer sebanyak 35 % lebih yang menyebabkan terjadinya penurunan pH laut. Lamun Cymodocea rotundata merupakan salah satu jenis lamun yang banyak ditemukan tumbuh di perairan tropis. Keadaan ini menimbulkan kekhawatiran tentang kemungkinan terjadinya dampak pada pertumbuhan lamun C. rotundata. Penelitian ini bertujuan untuk menganalisis kandungan nitrat, fosfat dan kalium dan pertumbuhan lamun C. rotundata yang meliputi pertumbuhan daun, rhizoma, dan akar C. rotundata terhadap perbedaan pH. Penelitian menggunakan metode eksperimen dengan rancangan acak lengkap menggunakan tabel acak. Sebanycak 15 toples dengan ukuran diameter 20 cm dan tinggi 25 cm digunakan dengan 3 perlakuan, masing-masing perlakuan 5 kali pengulangan. Hasil uji regresi linier menunjukkan pH berpengaruh terhadap konsentrasi nitrat, dan berpengaruh kuat terhadap konsentrasi fosfat dan kalium. Laju pertumbuhan daun lamun C. rotundata tertinggi pada kontrol berkisar antara 0,50–1,29 mm/hari sedangkan yang terendah pada pH rendah berikisar 0,07–0,73 mm/hari. Laju pertumbuhan rizhoma lamun secara horizontal dan vertikal tertinggi pada pH rendah sedangkan yang terendah pada pH kontrol. Laju pertumbuhan akar lamun tertinggi pada pH rendah berkisar antara 0,20–0,90 mm/hari. sedangkan yang terendah pada kontrol berkisar antara 0,13–0,43 mm/hari. pH juga memengaruhi laju pertumbuhan daun, rhizoma dan akar lamun C. rotundata. Semakin rendah pH maka laju pertumbuhan daun juga semakin rendah, berbeda dengan rhizoma dan akar semakin rendah pH maka semakin tinggi laju pertumbuhan.