Garuda - Garba Rujukan Digital

Article Per Year (5 Year)

All

ILMU KELAUTAN: Indonesian Journal of Marine Sciences

ijms
Website

Published by Universitas Diponegoro

ISSN : 08537291 EISSN : 24067598 DOI : -

Core Subject : Science,

Earth & Planetary Sciences

ILMU KELAUTAN: Indonesian Journal of Marine Sciences (IJMS) is dedicated to published highest quality of research papers and review on all aspects of marine biology, marine conservation, marine culture, marine geology and oceanography.

Arjuna Subject : -

Articles 743 Documents

26 27 28 29 30

Struktur Komunitas Ikan Karang di Perairan Kendari (Community Structure of Coral Reef Fishes at Kendari Waters) Muhammad Adrim; Syawaludin Alisyahbana Harahap; Kunto Wibowo
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 17, No 3 (2012): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Keberadaan ikan karang merupakan salah satu bioindikator terhadap kondisi terumbu karang yang baik. Penelitian ikan karang di perairan Kendari bertujuan untuk mengetahui komposisi jenis, kelimpahan, sebaran, dan struktur komunitas ikan karang di perairan tersebut. Pengumpulan data dilakukan bulan Juli 2011 pada lima lokasi di bagian utara dan selatan Kendari. Data dihimpun dengan menggunakan teknik Underwater Visual Census (UVC) dan metode transek (Line Intersept Transect, LIT) dengan peralatan SCUBA. Total jenis ikan karang terkumpul sebanyak 111 jenis yang mewakili 24 famili, terdiri dari 31 jenis ikan target (ikan konsumsi), 17 jenis ikan indikator (indicator species), dan kelompok major 63 jenis. Kelornpok ikan pangan (target) yang dominan; Caesio cuning, Siganus vulpinus dan Ctenochaetus striatus. Jenis yang paling dominan dari ikan indikator adalah Chaetodon octofasciatus. Sedangkan kelompok lainnya (major yang dominan) adalah Pomacentrus smithii, Chrysiptera rollandi, Chrysiptera springeri, dan Pomacentrus alexanderae. Nilai Indeks keanekaragaman berkisar 1,36– 3,23. Indeks dominasi Margalef (d) berkisar 4,74–8,66. Indeks kemerataan Pielou (J’=H’/logeS) diperololeh pada kisaran 0,38–0,81 . Hasil analisis kluster pada matrik kesamaan Bray-Curtis 37 % diperoleh dendrograrn yang menunjukkan dua pengelompokan stasiun. Berdasarkan ordinasi sampel dengan MDS diperoleh dari kesamaan (stress= 0) dengan jelas menunjukkan dua komunitas yang berbeda. Hasil penelitian ini diharapkan dapat menjadi masukan sebagai data dasar untuk pengelolaan daerah pesisir bagi pemerintahan daerah (PEMDA).Kata kunci: ikan karang, struktur komunitas, indeks ekologi, perairan Kendari.Coral reef Fishes is one of bio-indicators for good condition coral reef ecosystem. A study on coral reef fishes in the Kendari waters was aimed to find out species composition, abundance, distribution and community structure of coral reef fishes in that area. The study was conducted in July 2011 at five locations on the northern and southern part of Kendari waters. Data were gathered using SCUBA with underwater visual census (UVC) and line transect (Line Intersept Transect, LIT methods). A total of 111 species of 24 families of coral reef fishes were gathered, consisted of 31 species of target fishes, 17 indicator species and 63 species of major group fishes. The target fishes were dominated by Caesio cuning, Siganus vulpinus and Ctenochaetus striatus. Indicator species was dominated by Chaetodon octofasciatus and major group fishes were dominated by Pomacentrus smithii, Chrysiptera rollandi, Chrysiptera springeri, and Pomacentrus alexandera.The Shannon-Wiener diversity indices were ranged between 1.36 and 3.23, the Margalefs index of richness ranged from 4.74 and 8,66 while Evenness indices of Pielou were ranged from 0.38 to 0.81. The cluster analysis of Bray Curtis index of simmilarity showed two groups on the dendogram at 37% similarity level, while the multidimensional similarity analysis (stress = 0) was also shown two different communities. The result of the study could be useful to baseline data to coastal management area to local government authority (PEMDA).Key words: coral reef fish, community structure, ecology index, Kendari waters

Distribution, Abundance, and Biomass of Tropical Limpet Cellana testudinaria (Class: Gastropoda, Family: Patellidae) Living on the Rocky Shore of Ohoiwait, Southeast Moluccas, Indonesia Abraham Samuel Khouw
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 11, No 4 (2006): Jurnal Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Distribusi, kelimpahan, dan biomassa dari limpet C. testudinaria digambarkan secara terpisah untuk zona pantai bagian atas, tengah, dan bawah. Total 2402 ekor limpet diperoleh selama 12 bulan (dari Oktober 2001 sampai 2002). Rata-rata densitas adalah 11.12 ± 4.51 ind.m-2. Densitas tertinggi berada pada zona atas dan tengah daripada zona bawah. Analisa varian menunjukkan perbedaan nyata antar zona, bulan, dan interaksi zona-bulan. Pola penyebaran limpet adalah berkelompok. Rata-rata biomass tahunan diestimasi sebesar 1013± 748 mg AFDW.m-2 (21.8 kJ.m-2). Biomassa tertinggi 3236 mg AFDW.m-2 atau 69.9 kJ.m-2 ditemukan pada bulan September 2002, sementara terrendah pada bulan Maret 2002 sebesar 544 mg AFDW.m-2 atau 11.7 kJ.m-2. Rata-rata biomassa pada musim hujan 619 mg AFDW.m-2 atau 13.4 kJ.m-2 lebih rendah dibandingkan pada musim kemarau yakni 899 mg AFDW.m-2 atau 19.4 kJ.m-2.Kata kunci: Limpet, Cellana testudinaria, distribusi, kelimpahan, biomassa The distribution, abundance, and biomass of the tropical limpet C. testudinaria are described separately for the high, middle and low shore levels. A total of 2402 limpets were obtained in 12 monthly collections (from October 2001 to September 2002). The mean density over the whole period was 11.12 ± 4.51 ind.m-2. The density tended to be higher at the high (15.79 ± 7.54 ind.m-2) and the middle (14.67 ± 13.99 ind.m-2) than at the low shore level (2.90 ± 2.44 ind.m-2). Analysis of variance showed significant density differences among shore levels, months, as well as a significant interaction between shore levels and months. The smallscale dispersion patterns did not show any seasonal variability. They were strongly clumped throughout the year and at each shore level. The mean annual population biomass was estimated to be 1013 ± 748 mg AFDW.m-2 (21.8 kJ.m-2). The highest biomass (3236 mg AFDW.m-2 or 69.9 kJ.m-2) occurred in September 2002, whilst the lowest (544 mg AFDW.m-2 or 11.7 kJ.m-2) was in March 2002. The monthly mean biomass (619 mg AFDW.m-2 or 13.4 kJ.m-2) of the rainy season was lower than that (899 mg AFDW.m-2 or 19.4 kJ.m-2) of the dry season.Key words: Limpet, Cellana testudinaria, distribution, abundance, biomass

Physiological Response of Thallasia hemprichii on Antrophogenic Pressure In Pari Island, Seribu Islands, DKI Jakarta Aditya Hikmat Nugraha; Dietriech G. Bengen; Mujizat Kawaroe
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 22, No 1 (2017): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Seagrass ecosystem is one of tropical marine ecosystem and have important function. The function of ecosystem like a feeding and nursery ground for marine biota. Antrophogenic pressure is one of threat for seagrass ecosystem sustainability. This research study about effect antropogenic pressure for seagrass Thallasia hemprichii physiology response in some different location at Great Barrier Pari Island. The physiology response study cover growth, heavy metal bioaccumulation and histology analysis. The result shows that growth of leaf and rhizome Thalassia hemprichii have positif correlation with nutrient consentration in environment. The highest growth of leaf Thalassia hemprichii at 2nd station (4.16 mm.day-1) and the highest growth of rhizome Thalassia hemprichii at 4th station (1.3 mm.day-1). Seagrass can accumulation heavy metal from environment. The highest heavy metal accumulation is Pb. Not correlation between heavy metal consentration in seagrass with heavy metal concentration from environment. Analysis histology result that not damage seagrass tissue in all research station. Keyword : Bioacumulation,Growth,Physiology,Seagrass, Thalassia hemprichiiSeagrass ecosystems is one of the tropical marine ecosystems that have important functions, among others as a feeding and nursery ground for marine life. Anthropogenic stress is one of the threats that may inhibit the survival of seagrass ecosystems. This study examines the effects of anthropogenic pressures on physiological responses of seagrass Thalassia hemprichii at several different locations in Pari Islands. Physiological responses studied were leaves and rhizome growth, bioaccumulation of heavy metals and histological tissue analysis on seagrass. The results showed that the growth response of seagrass has a positive correlation with the nutrients in the environment. Seagrass leaf growth is highest at Station 2 (4.16 mm.day-1) and rhizome growth is highest at Station 4 (1.3 mm.day-1). Seagrass accumulate heavy metals from the environment and accumulation of heavy metals is highest on Pb. There is no correlation between the concentration of heavy metals in the seagrass and environment. The results of histological analysis showed that there was no damage to the tissue of seagrass leaf and rhizome. Keywords : Bio-acumulation, Growth, Physiology, Seagrass, Thalassia hemprichii

Causative Agent Vibriosis dari Kerapu Bebebk (Cromileptis altivelis ) : 2. Kakarkterisasi secara Molekuler Berbasis 16 S rDNA Sarjito Sarjito
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 16, No 4 (2011): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Ikan Kerapu Bebek (Cromileptis altivelis) sakit diperoleh dari keramba jaring apung di Karimunjawa. Penelitian ini bertujuan untuk mengkaji causative agent utama vibriosis pada ikan kerapu bebek (C. altivelis) dari karamba jaring apung di perairan Karimun Jawa. Sebanyak tujuh isolat vibrio diisolasi dari bagian luka maupun ginjal kerapu bebek sakit yang menunjukkan gejala vibriosis. Hasil uji postulat koch dan pathogenisitasnya dari enam isolat, diperoleh bahwa tiga isolat (isolat JT 07; JT 10 dan JT 20 ) yang mengakibatkan 100% dan merupakan agensia penyebab utama vibriosis pada ikan Kerapu Bebek . Oleh karena itu, pada penelitian ini hanya tiga isolat ini yang akan dilakukan uji selanjutnya. Teknik molekuler gen 16S rDNA (amplifikasi 16S DNA ribosom) digunakan untuk karakterisasi ketiga causative agent utama secara komprehensif. Berdasarkan analisis sekuen gen 16S rDNA, data menunjukkan bahwa isolat JT 07 memiliki kekerabatan terdekat dengan Vibrio olivaceus (99%); isolat JT 10 dengan V. damsella (99%) dan isolat JT 20 dengan V. alginolyticus (98%). Kata kunci: causative agent, Vibriosis, molekuler, Kerapu bebekMoribound Humpbeck Grouper fish (Cromileptis altivelis) was taken from the cages of Karimunjawa. The research aim was to find out the main causative agent of vibriosis on humpbeck grouper (C. altivelis) from Karimunjawa waters. Seven isolates of Vibrio were isolated from external wound and kidney of the humpbeck grouper fish (C. altivelis) which showed the clinical signs of vibriosis. Based on the koch postulate and pathogenecity test results indicated that three vibrios (isolate JT 07; JT 10 and JT 20 ) act as a main causative agents of vibriosis which caused mortality of 100% to E. fuscogutatus. Because of highest mortality as pathogenicity indicator, the three isolates were continued to investigate. A complementary molecular techniques of 16S rDNA genes (amplified 16S ribosomal DNA) was used to give a comprehensive characterization of these isolates. On the basis of the results of sequen analysis, our data showed that JT 07; JT 10 and JT 20 isolates were closely related to Vibrio olivaceus (99.0%); V. damsella (99%) and V. alginolyticus (98%) respectively.. Key Words : Causative agent, Vibriosis, molecular, humpbeck grouper

Karakteristik Morfometri dan Pertumbuhan Kerang Bulu Anadara pilula (Characteristic of Morphometric and Growth of Anadara pilula) W. Nugroho Satrioajie; Sutrisno Anggoro; Irwani Irwani
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 18, No 2 (2013): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Salah satu spesies dalam genus Anadara yang dimanfaatkan sebagai sumber bahan pangan alternatif adalah Anadara pilula. Pengetahuan mengenai biologi jenis kerang ini sangat terbatas karena kurang populer dibandingkan dengan A. granosa. Penelitian ini bertujuan untuk menganalisis karakteristik morfometri, biometri dan pertumbuhan kerang bulu A. pilula. Sampel kerang bulu diperoleh di perairan Kota Tegal. Pengukuran panjang, tebal, dan tinggi cangkang serta berat total kerang dilakukan dengan menggunakan jangka sorong. Sedangkan berat kerang diukur dengan timbangan elektronik. Hasil penelitian menunjukkan antar dimensi (panjang, tebal, dan tinggi) cangkang mempunyai hubungan yang erat (r≥0,8) dengan pertumbuhan panjang cangkang lebih mendominasi, diikuti pertumbuhan tebal kemudian tinggi cangkang. Sifat pertumbuhan demikian menyebabkan bentuk cangkang A. pilula hampir membulat. Kondisi yang sama juga ditemukan pada hubungan antara dimensi cangkang dengan berat total yang bersifat alometri negatif (b<3), dimana pertumbuhan linier cangkang lebih cepat dari pada pertambahan berat A. pilula. Hasil ini berpengaruh terhadap faktor kondisi kerang dan dapat digunakan untuk menentukan ukuran terbaik dalam memanfaatkan kerang ini. Kata kunci: Anadara pilula, morfometri, biometri, pertumbuhan One of species in genus Anadara which is used as food alternative resources is Anadara pilula (Reeve, 1843). The knowledge of this species is very limited because it has not been well studied than A. granosa (Linnaeus, 1758). This research aims to analyse characteristic of morphometric, biometric and growth of A. pilula from Tegal waters. Measurement of length, thick and height of shells as well as total weight of cockle were measured from December 2009 to February 2010. The result showed that there was strong correlation ((r≥0,8) in the dimensions of the cockle shells, the growth of shells length was more dominant than thick and height. This phenomenon cause the form of A. pilula is nearly circular. There were relationship between dimensions of cockle shells with total weight (alometri negative, b<3) which was meant that growth of cockle shells is faster than weight and influenced the condition factor of cockles. This also can be used in determining the best of harvest size. Keywords: Anadara pilula, morphometric, biometric, growth characteristic

Tingkah Laku Akustik (Acoustic behaviour) Ikan Kerapu Macan (Epinephelus fuscoguttatus) Aristi Dian Purnama Fitri; Asriyanto Asriyanto; Heri Sutanto
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 14, No 3 (2009): Jurnal Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Kerapu macan (Epinephelus fuscoguttatus) memproduksi suara selama melakukan berbagai aktivitas termasuk pada saat makan. Penelitian lebih mendalam untuk mengetahui apakah E. fuscoguttatus dapat merespons frekuensi suara disekelilingnya, belum pernah dilakukan. Tujuan penelitian adalah mengetahui karakteristik frekuensi suara E. fuscoguttatus dan mengetahui pola tingkah lakunya ketika mendeteksi sumber suara. Metode penelitian adalah eksperimental laboratories, dengan tahapan penelitian adalah mengetahui frekuensi dan intensitas suara E. fuscoguttatus saat makan, serta mengetahui pola tingkah laku E. fuscoguttatus saat adanya sumber suara. Acoustic behaviour yang dihasilkan E. fuscoguttatus ketika makan adalah berkisar 16-32 Hz (58,9 dB) pada ratarata panjang total tubuh 100 mm dan berkisar 16-128 Hz (55,8 dB) dengan rata-rata panjang total tubuh 250 mm. Tidak adanya gelembung renang dan garis gurat sisi yang tidak terlihat jelas, menyebabkan E. fuscoguttatus tidak merespons sumber suara yang diberikan (sebagai atraktor) skala laboratorium. Kata kunci : Kerapu macan (Epinephelus fuscoguttatus), Acoustic behaviour Grouper (Epinephelus fuscoguttatus) produced sound when conducting some activities including feeding. The objective of research was to determine the sound frequency characteristic of E. fuscoguttatus and to investigate known the behavior pattern when the fish detects source of sound. The method of research was experiment laboratories, with research step was known frequency and intensity of sound E. fuscoguttatus when feeding activity, and known behavior pattern E. fuscoguttatus when detecting of source of sound. Acoustic behaviour E. fuscoguttatus when feeding was range from 16-32 Hz (58.9 dB) at average on 100 mm TL and range from 16-128 Hz (55.8 dB) with average on 250 mm. E. fuscoguttatus didn’t had swim bladder and linea lateralis not distinct, caused E. fuscoguttatus didn’t response with source sound (as attractor) in a laboratory scale. Key words : Epinephelus fuscoguttatus, Acoustic behavior

Are Zooxanthellae Really Sensitive? Response of Zooxanthellae Size Exposed to Several Pollutants Ambariyanto Ambariyanto; Diah Permata Wijayanti; Munasik Munasik; Puji Eka Purnama; Mu’alimah Hudatwi; Ni Made Ernawati; Alferd Y. Ko'ou
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 23, No 1 (2018): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Pollution is one of the important issues faced by marine resources including zooxanthellae, which is known to be very sensitive to environmental changes. Some pollutants have been reported to have adverse effects on zooxanthellae, however, their sensitivity in regards to changes on cell size of these algae has not been widely explored. This study examined the effects of pollutants on the sensitivity of zooxanthellae through changes in size. Zooxanthellae were isolated from corals Porites lutea, Acropora aspera, and Montipora digitata collected from Panjang Island, Jepara, Indonesia. These algae were exposed to pollutants i.e. heavy metals (Cu, Cd, Pb) and nutrients (ammonium and phosphate) at concentrations of 5,10,15 ppb and 5,10,15 μM, respectively. Zooxanthellae size were measured five hours after pollutants exposure. The results showed that all treatments reduced the size of zooxanthellae. Algae isolated from P. lutea are the least affected by pollutants and the highest percentage cell size reduction was found in phosphate treatment. However, reduction on the size of algae were not statistically significant. These results indicate that in relation to reduction in the size, zooxanthellae are not sensitive to pollutants. Keywords: Zooxanthellae, pollutants, sensitivity, size reduction

Aspek Reproduksi dan Daerah Pemijahan Udang Jari (Metapenaeus elegans De Man, 1907) di Laguna Segara Anakan, Cilacap, Jawa Tengah Suradi Suradi; Sutrisno Sukimin; Menofatria Boer; Ridwan Affandi; Daniel R Monintja
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 10, No 1 (2005): Jurnal Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Penelitian aspek reproduksi dan daerah pemijahan udang jari (Metapenaeus elegans) di perairan SegaraAnakan Cilacap, dilakukan sejak Maret sampai Desember 2004. Penelitian bertujuan untuk mengetahui beberapa aspek reproduksi dan pengkajian musim dan daerah pemijahan udang M. elegans di perairan Segara Anakan. Metode peneltian yang digunakan survei post facto. Daerah penelitian dibedakan menjadi 3 wilayah perairan. Penentuan zona berdasarkan dua aspek, yaitu aspek ekologis dan aspek daerah penangkapan (fishing ground) alat tangkap apong. Pada setiap zona ditentukan tiga lokasi sampling. Sampel udang pada setiap stasiun diambil 30 ekor udang betina terbesar, sehingga terkumpul 270 ekor udang sampel. Hasil penelitian menunjukkan bahwa M. elegans memijah sepanjang tahun, dengan dua puncak musim pemijahanyaitu bulan April/Mei dan November/Desember. Daerah pemijahan udang jari (M. elegans) adalah perairan laguna bagian tengah. Meskipun pada lokasi pemijahan terjadi pendangkalan akibat laju sedimentasi yang tinggi dan menjadikan perairan keruh serta kondisi salinitas yang berfluktuasi tinggi, namun pemijahan tetap terjadi di perairan tersebut.Kata kunci : aspek reproduksi, daerah pemijahan, udang jari, laguna Segara Anakan.Study on the reproduction and spawning ground of Metapenaeus elegans in Segara Anakan Lagoon Cilacap was conducted from March to December 2004. This study was aimed at investigating some reproductiveaspects and to discover the spawning ground M. elegans. The research was used survey post facto method. The researh area was divided into three waters zone. The zone was determinated based on two aspect, i.e. ecological aspect and fishing ground aspect. Three sampling station determined of each zone. The shrimp sample was taken from three unit apong (set net) cathces. 30 biggest male shrimp were took off from in each, so 270 male shrimp collected. The result showed that M. elegans spawned along the year with two peaks of spawning season, i.e. April/May and November/December. Spawning ground of fine shrimp (M. elegans) was found in lagoon waters, despite high turbidity, high sedimentation rate and high salinityfluctuation in the water.Key words: reproduction aspect, spawning ground, M. elegans, Segara Anakan Lagoon.

Komposisi dan Vegetasi Hutan Mangrove di Pulau-Pulau Kecil, di Pasaman Barat (Mangrove Forest Composition and Vegetation Small Islands at West Pasaman) Eni Kamal; Hasnil Haris
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 19, No 2 (2014): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Komposisi dan vegetasi ekosistem mangrove pada suatu kawasan yang tumbuh di pulau-pulau kecil umumnya tidak sama dan tergantung kepada ekologi dari ekosistem pulau tersebut. Tujuan ini penelitian ini adalah untuk memperoleh informasi dari komposisi, struktur vegetasidan jenis mangrove yang hidup pada masing-masing pulau kecil di kawasan Pasaman Barat. Metode ang digunakan adalah survei lapangan untuk mendapatkan jenis, komposisi dan struktur vegetasi dari masing-masing pulau dengan melakukan teknik transek kuadrat. Pada penelitian yang telah dilakukan di beberapa tiga pulau di Kabupaten Pasaman Barat (pulau Taming, pulau Harimau, dan pulau Panjang) menunjukkan bahwa ke tiga pulau tersebut telah teridentifikasi tumbuhan 15 spesies, 11 famili, 2 famili dan 5 spesies merupakan masuk pada kategori mangrove sejati dan spesies dominan adalah R. stylosa dengan indek nilai penting (IVi) untuk tingkat pohon 192,88% di pulau Taming, pulau Harimau 36 spesies, 24 famili, 9 spesies dan 4 famili masuk pada mangrove sejati, spesies dominan R. apiculata, (IVi ) adalah 229,82%, sedangkan pada pulau Panjang 18 spesies, 14 famili, dimana 5 spesies dan 2 famili masuk kategori mangrove sejati, spesies dominan R. mucronata dengan (IVi ) 92,98%. Dari masing-masing pulau menunjukkan komposisi, struktur vegetasi dan kedominan speises yang berbeda dan ini disebabkan oleh perbedaan subtrat yang dominan yang terdapat pada masing-masing pulau. Kata kunci: komposisi; vegetasi; mangrove, pulau-pulau kecil; Pasaman Barat Composition and vegetation of mangrove ecosystem in an area including that grown in small islands is different and depends on ecology and ecosystem of the islands. The purpose of the research is for getting the information of composition, vegetation structure and mangrove type that grown an each small islands in west Pasaman area. The method use was a survey of the field to get the type, composition and vegetation structure of each island by using transectsquares technique.In the research that has been done on several islands in the West Pasaman (Taming Island, Harimau Island, and Panjang Island), have been identified plants on Tamang Island that had 15 species and 11 families, which 2 families and 5 spesies were categorized as true mangroves and the dominant spesies is R. stylosa with important value index (IVi) is 192.88%, on Harimau Island found 36 species and 24 families, which 9 species and 4 families were categorized as true mangroves and the dominant is R. apiculata with 229.82% (Vi), while on Panjang Island found 18 plant species and 14 families, which 5 species and 2 families were categorized as true mangroves, the dominant species is R. mucronata with 92.98%. From each island showed composition, vegetation structure and different dominant spesies and this different is caused by the dominant substrate fand on each island. Keywords: composition; vegetation; mangrove; small islands; West Pasaman

Skrining Kandidat Bakteri Probiotik dari Saluran Pencernaan Ikan Kerapu Berdasarkan Aktivitas Antibakteri dan Produksi Enzim Proteolitik Ekstraseluler Subagiyo Subagiyo; Ali Djunaedi
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 16, No 1 (2011): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Strategi penyehatan ikan secara terpadu merupakan salah satu upaya yang paling efektif dalam pengendalian penyakit serta perlindungan lingkungan pada budidaya akuatik. Pengembangan probiotik menduduki peran fungsional yang penting bersamaan dengan pengembangan vaksin dan immunostimulan. Penelitian ini bertujuan untuk menseleksi bakteri probiotik yang akan dikembangkan sebagai materi dasar untuk mengkonstruksi konsorsium probiotik dengan target fungsional di saluran pencernaan ikan kerapu. Salah satu kriteria seleksi ditetapkan berdasarkan desain konstruksi konsorsium gut probiotik yaitu kemampuan menghasilkan senyawa antibakteri terhadap bakteri pathogen dan kemampuan menghasilkan enzim pencernaan diantaranya adalah enzim proteolitik ekstraseluler. Penelitian ini dilakukan dengan metode eksplorasi dan eksperiment laboratoris. Ikan kerapu macan secara aseptic diambil saluran pencernaannya, kemudian dihancurkan menggunakan mortar. Penanaman bakteri dilakukan dengan metode pour-plate pada medium nutrient agar. Deteksi aktivitas antibakteria dilakukan dengan metode difusi agar menggunakan paper disk sedangkan deteksi produksi enzim proteolitik ekstraseluler dilakukan dengan metode tusukan pada media yang diperkaya dengan skim milk. Hasil seleksi berdasarkan kriteria seleksi yang telah ditetapkan diperoleh 8 isolat bakteri potensial untuk dapat dikembangkan sebagai konsorsium probiotik. Ke 8 isolat ini mempunyai kemampuan untuk menghasilkan senyawa antibakteri yang aktif terhadap 4 jenis vibrio (V. parahaemolyticus, V. vulnivicus, V. harveyii, dan V.anguilarum) serta menghasilkan enzim proteolitik ekstraseluler yang diperlukan untuk mencerna senyawa yang bersifat protein yang merupakan komponen utama pakan ikanKata kunci: Probiotik, pengendalian penyakit, antibakteri, enzim proteolitik, saluran pencernaan, ikan kerapu The strategy to healhty fish in an integrated manner is one of the efforts that is the most effective to environmentally friendly disease control. The development of probiotics occupied the functional role that is important along with the development of the vaccine and immunostimulant. This research aimed to select the candidates of probiotic bacteria that will be developed as basic material to construct the probiotic consortium with the functional target in the digestion tract of the grouper fish. The one of selection criteria was appointed based on the construction of the gut probiotic consortium is the capacity to produce the antibacterial compound against the pathogen, and the capacity to produce proteolitic enzymes. The research was carried out with the exploration and experimenal laboratory methods The intestine was removed from the fish of the tiger grouper, afterwards was destroyed by mortar. The planting of the bacteria was carried out with the pour-plate method in nutrient agar medium. Antibacterial activity was detection by agar diffusion method using paper disk, while the detection capability to produce extracellular proteolitic enzymes was carried out by using enrichment media with skim milk. The Results of selection obtained eight bacterial isolates that can be developed potentially as the consortium of gut probiotic. The eight bacterial isolates were able to produce antibacterial compounds (that was active against V. parahaemolyticus, V. vulnivicus, V. harveyii, and V.anguilarum) and extracellular proteolitic enzymes Key words: Probiotic, diseases control, antibacteria, proteolitic enzyme, gastrointestinal tract, grouper

Page 28 of 75 | Total Record : 743

26 27 28 29 30

Filter by Year

2001 2025

Filter By Issues

All Issue Vol 30, No 3 (2025): Ilmu Kelautan Vol 30, No 2 (2025): Ilmu Kelautan Vol 30, No 1 (2025): Ilmu Kelautan Vol 29, No 4 (2024): Ilmu Kelautan Vol 29, No 3 (2024): Ilmu Kelautan Vol 29, No 2 (2024): Ilmu Kelautan Vol 29, No 1 (2024): Ilmu Kelautan Vol 28, No 4 (2023): Ilmu Kelautan Vol 28, No 3 (2023): Ilmu Kelautan Vol 28, No 2 (2023): Ilmu Kelautan Vol 28, No 1 (2023): Ilmu Kelautan Vol 27, No 4 (2022): Ilmu Kelautan Vol 27, No 3 (2022): Ilmu Kelautan Vol 27, No 2 (2022): Ilmu Kelautan Vol 27, No 1 (2022): Ilmu Kelautan Vol 26, No 4 (2021): Ilmu Kelautan Vol 26, No 3 (2021): Ilmu Kelautan Vol 26, No 2 (2021): Ilmu Kelautan Vol 26, No 1 (2021): Ilmu Kelautan Vol 25, No 4 (2020): Ilmu Kelautan Vol 25, No 3 (2020): Ilmu Kelautan Vol 25, No 2 (2020): Ilmu Kelautan Vol 25, No 1 (2020): Ilmu Kelautan Vol 24, No 4 (2019): Ilmu Kelautan Vol 24, No 3 (2019): Ilmu Kelautan Vol 24, No 2 (2019): Ilmu Kelautan Vol 24, No 1 (2019): Ilmu Kelautan Vol 23, No 4 (2018): Ilmu Kelautan Vol 23, No 3 (2018): Ilmu Kelautan Vol 23, No 2 (2018): Ilmu Kelautan Vol 23, No 1 (2018): Ilmu Kelautan Vol 22, No 4 (2017): Ilmu Kelautan Vol 22, No 3 (2017): Ilmu Kelautan Vol 22, No 2 (2017): Ilmu Kelautan Vol 22, No 1 (2017): Ilmu Kelautan Vol 21, No 4 (2016): Ilmu Kelautan Vol 21, No 3 (2016): Ilmu Kelautan Vol 21, No 2 (2016): Ilmu Kelautan Vol 21, No 1 (2016): Ilmu Kelautan Vol 20, No 4 (2015): Ilmu Kelautan Vol 20, No 3 (2015): Ilmu Kelautan Vol 20, No 2 (2015): Ilmu Kelautan Vol 20, No 1 (2015): Ilmu Kelautan Vol 19, No 4 (2014): Ilmu Kelautan Vol 19, No 3 (2014): Ilmu Kelautan Vol 19, No 2 (2014): Ilmu Kelautan Vol 19, No 1 (2014): Ilmu Kelautan Vol 18, No 4 (2013): Ilmu Kelautan Vol 18, No 3 (2013): Ilmu Kelautan Vol 18, No 2 (2013): Ilmu Kelautan Vol 18, No 1 (2013): Ilmu Kelautan Vol 17, No 4 (2012): Ilmu Kelautan Vol 17, No 3 (2012): Ilmu Kelautan Vol 17, No 2 (2012): Ilmu Kelautan Vol 17, No 1 (2012): Ilmu Kelautan Vol 16, No 4 (2011): Ilmu Kelautan Vol 16, No 3 (2011): Ilmu Kelautan Vol 16, No 2 (2011): Ilmu Kelautan Vol 16, No 1 (2011): Ilmu Kelautan Vol 15, No 4 (2010): Ilmu Kelautan Vol 15, No 3 (2010): Ilmu Kelautan Vol 15, No 2 (2010): Ilmu Kelautan Vol 15, No 1 (2010): Ilmu Kelautan Vol 14, No 4 (2009): Jurnal Ilmu Kelautan Vol 14, No 3 (2009): Jurnal Ilmu Kelautan Vol 14, No 2 (2009): Jurnal Ilmu Kelautan Vol 14, No 1 (2009): Jurnal Ilmu Kelautan Vol 13, No 4 (2008): Jurnal Ilmu Kelautan Vol 13, No 3 (2008): Jurnal Ilmu Kelautan Vol 13, No 2 (2008): Jurnal Ilmu Kelautan Vol 13, No 1 (2008): Jurnal Ilmu Kelautan Vol 12, No 4 (2007): Jurnal Ilmu Kelautan Vol 12, No 3 (2007): Jurnal Ilmu Kelautan Vol 12, No 2 (2007): Jurnal Ilmu Kelautan Vol 12, No 1 (2007): Jurnal Ilmu Kelautan Vol 11, No 4 (2006): Jurnal Ilmu Kelautan Vol 11, No 3 (2006): Jurnal Ilmu Kelautan Vol 11, No 2 (2006): Jurnal Ilmu Kelautan Vol 11, No 1 (2006): Jurnal Ilmu Kelautan Vol 10, No 4 (2005): Jurnal Ilmu Kelautan Vol 10, No 3 (2005): Jurnal Ilmu Kelautan Vol 10, No 2 (2005): Jurnal Ilmu Kelautan Vol 10, No 1 (2005): Jurnal Ilmu Kelautan Vol 9, No 4 (2004): Jurnal Ilmu Kelautan Vol 9, No 3 (2004): Jurnal Ilmu Kelautan Vol 9, No 2 (2004): Jurnal Ilmu Kelautan Vol 9, No 1 (2004): Jurnal Ilmu Kelautan Vol 7, No 3 (2002): Jurnal Ilmu Kelautan Vol 7, No 2 (2002): Jurnal Ilmu Kelautan Vol 7, No 1 (2002): Jurnal Ilmu Kelautan Vol 6, No 4 (2001): Jurnal Ilmu Kelautan More Issue

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name
-

Contact Email
-

Phone
-

Journal Mail Official
-

Editorial Address
-

Location
Kota semarang,

Jawa tengah

INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name -

Contact Email -

Phone -

Journal Mail Official -

Editorial Address -

Location Kota semarang, Jawa tengah INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
-

Contact Email
-

Phone
-

Journal Mail Official
-

Editorial Address
-

Location
Kota semarang,

Jawa tengah

INDONESIA