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Journal of Marine Research
Published by Universitas Diponegoro
ISSN : -     EISSN : 24077690     DOI : 10.14710/jmr.v9i4.28340
Core Subject : Science,
The Journal of Tropical Fisheries Management is managed by the Department of Water Resource Management, Faculty of Fisheries and Marine Sciences, Bogor Agricultural University aims to publish the results of basic, applied research in the scope of fisheries resources, fish stock studies, and population dynamics, fish biodiversity, fisheries technology, industrialization and fish trade, fisheries management, and fisheries development policies in the tropics, especially Indonesia. The scope of the area includes: Marine Fisheries Coastal Fisheries Inland Fisheries The focus and scope of this publication are expected to contribute thoughts for the government to strengthen the science of fisheries management
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Articles 687 Documents
Studi Habitat Peneluran Penyu Sisik (Eretmochelys imbricata) di Pulau Menjangan Kecil Kepulauan Karimunjawa Kabupaten Jepara Jawa Tengah Tasha Iary; Adi Santoso; Raden Ario
Journal of Marine Research Vol 7, No 3 (2018): 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 (415.326 KB) | DOI: 10.14710/jmr.v7i3.25913

Abstract

ABSTRAK : Penyu merupakan salah satu anggota reptil berkarapas yang hidup di laut. Keberadaan penyu saat ini semakin lama semakin berkurang. Hal ini menyebabkan Penyu terdaftar dalam Apendik I Konvensi Perdagangan Internasional Fauna dan Flora Spesies Terancam (Convention on International Trade of Endangered Species of Wild Fauna and Flora - CITES). Salah satu jenis penyu yang bersifat khas dan populasinya semakin berkurang adalah penyu Sisik (Eretmochelys imbricata). Kepulauan Karimunjawa diketahui menjadi salah satu habitat peneluran penyu Sisik di Indonesia. Penelitian ini dilaksanakan di Pulau Menjangan Kecil Kepulauan Karimunjawa untuk mengetahui karakteristik habitat peneluran penyu Sisik (E. imbricata) yang ditinjau dari aspek biologi dan geofisik yang terdiri dari jenis vegetasi, jenis predator yang dijumpai, lebar pantai, kemiringan pantai, suhu pasir, kadar air dalam pasir, dan pengukuran butiran pasir. Metode yang digunakan dalam penelitian ini adalah metode deskriptif eksploratif. Hasil penelitian menunjukan beberapa karakteristik geofisik habitat peneluran penyu sisik di Pulau Menjangan Kecil meliputi kemiringan pantai yang berkisar 2,51o - 4,85o, suhu pasir antara 27˚ – 28,˚C, kemudian kadar air sedimen rata-rata sebesar 4,94%, dan ukuran butir pasir didominasi oleh pasir halus. Sementara karakteristik biologi meliputi vegetasi yang didominasi oleh Kelapa (Cocos nucifera), Katang (Ipomoea pes-caprae), dan Cemara Laut (Casuarina equisetifolia), dan predator yang dijumpai adalah Semut Merah (Oechophylla smaragdina), Kepiting (Ocypoda sp.), dan Biawak (Varanus salvator). ABSTRACT : Turtle is one of carapaced reptiles that live in the sea. Currently, the existence of turtles progressively reduced and has been listed in Appendix I of the Convention on International Trade of Endangered Species of Wild Fauna and Flora - CITES. One of the turtles that is unique and the population was reduced is Hawksbill Turtle (Eretmochelys imbricata). Karimun Islands is known to be one of the hawksbill turtle’s nesting habitat in Indonesia. This research was conducted in Menjangan Kecil Island, Karimunjawa Islands know the nesting site characteristics of Hawksbill turtle (E. imbricata) that evaluated from various aspects including biology, such as the type of vegetation and kinds of predators, and geophysics that consist coastal width, coastal slope, sand temperature, water content in the sand, and the measurement of grains of sand. The method used in this research is descriptive exploratory. The results showed some hawskbill turtle’s geophysical characteristics of nesting site in Menjangan Kecil Island include coastal slope in the range of 2.510 - 4.850, the sand temperature between 27-28˚C, the average of the water content of sediment is 4.94%, and the size of sand grains is dominated by fine sand. While the biological characteristics include vegetation that dominated by Coconut Tree (Cocos nucifera), Katang (Ipomoea pes-caprae), and Cemara Laut (Casuarina equisetifolia), and the predator that encountered are red ants (Oechophylla smaragdina), crabs (Ocypoda sp.), and lizards (Varanus salvator).
Pengaruh Substitusi Limbah Cair Tahu Untuk Menstimulasi Pembentukan Lipida Pada Chlorella sp. Harahap, Puspita Sari; Susanto, Antonius Budi; Susilaningsih, Dwi; Rahma, Delicia Yunita
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (206.672 KB) | DOI: 10.14710/jmr.v2i1.2070

Abstract

Chlorella sp. is one of microalgae which has potential lipid content. Chlorella sp. has a rapid growth rate and also easy to maintain. Therefore, chlorella has potency as source in biodiesel production.This aim of study is to determine substitution of carbon source as regular medium with tofu liquid waste to enhanced lipid production of Chlorella sp. This research was conducted by laboratory experimental method using Completely Randomized Design (CRD) with six treatments (three replicates) and one control. Material in this research is Chlorella sp. that obtained from Puslit Bioteknologi- Bioproses division, Lembaga Ilmu Pengetahuan Indonesia, Cibinong. Research’s data is analyzed using analysis variant (for the normal and homogenous data) or using non-parametric (for the abnormal and in homogenous data). The result of this study indicates treatment which has higher lipid is Chlorella sp.’s cultivation with tofu liquid waste addition 15 % in day 42nd (0,5160 g/ L), and treatment with tofu liquid waste addition 20 % in day 45th has the highest oil content (0,4040 g/ L).Culture of Chlorella sp. with tofu liquid waste as medium resulted decrese lipid production.
Studi Kesesuaian Wisata Pantai Parangtritis Sebagai Rekreasi Pantai Kabupaten Bantul, Yogyakarta Yustiabel, Hebron; Irwani, Irwani; Subardjo, Petrus
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (263.475 KB) | DOI: 10.14710/jmr.v3i4.11415

Abstract

Pantai Parangtritis adalah pantai yang berlokasi di Kabupaten Bantul, Yogyakarta. Pantai ini memiliki potensi pada sumberdaya pesisir yaitu dibidang pariwisata. Tetapi belum diketahui apakah pantai ini sudah sesuai atau belum. Selain itu lahan yang digunakan untuk kegiatan pariwisata masih belum dimanfaatkan secara optimal. Hal ini menunjukkan bahwa perlu dilakukan pengembangan objek wisata di pantai ini. Untuk mendukung pengembangan tersebut maka perlu dilakukan studi kesesuaian terlebih dahulu. Metode penelitian yang digunakan adalah metode deskriptif. Penelitian ini dilakukan dengan observasi lapangan (pengumpulan data primer dan data sekunder) pada bulan Desember 2013 sampai bulan Januari 2014. Metode pengambilan sampel menggunakan metode purposif yang terbagi dalam lima titik lokasi sampling. Pengumpulan data primer berupa data kondisi perairan dan parameter kesesuaian wisata, seperti tipe pantai, lebar pantai, kemiringan pantai, material pantai, kecepatan arus, kecerahan perairan, penutupan lahan pantai, biota berbahaya, dan ketersediaan air tawar. Analisis yang digunakan adalah analisis Indeks Kesesuaian Wisata (IKW).Hasil penelitian menunjukkan bahwa nilai IKW di Pantai Parangtritis termasuk kategori Sangat Sesuai (S1) dengan nilai IKW >80 %. Hal ini menunjukkan bahwa Pantai Parangtritis mendukung untuk pengembangan kawasan wisata rekreasi pantai
Studi Kebiasaan Makanan Ikan Layur (Trichiurus lepturus) di Perairan Pantai Bandengan Kabupaten Jepara dan di Perairan Tawang Weleri Kabupaten Kendal Abidin, Zaenal; Redjeki, Sri; Ambariyanto, Ambariyanto
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (153.485 KB) | DOI: 10.14710/jmr.v2i3.3137

Abstract

Ribbonfish as demersal fish which is one of export commodity and can be found in Java coasts and estuaries in Sumatra. This research aims to determine the food habits of ribbonfish (Trichiurus lepturus) by analyzing the types of food found in the stomach of the fish collected from coastal area of Bandengan, Jepara Regency and the waters of Tawang, Kendal, both in Central Java Province. Food habits of fish was determined by stomach content analysis. The result indicates that food type of ribbonfish (T. lepturus) from Bandengan, Jepara, mostly were anchovies, long-jawed mackarel and white snappers. While food type of fish from Tawang, Kendal, mostly were ponyfish, followed by longjawed mackarel, and anchovies. The difference of food habits probably due to biotic condition environmental differences and like temperature, light, space and surface area.
Identifikasi Jamur pada Tukik Lepidochelys olivacea, Eschscholtz, 1829 (Reptilia : Cheloniidae) Di Turtle Conservation And Education Center Bali Ayuningtyas, Ika; Kushartono, Edi Wibowo; Redjeki, Sri
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (900.568 KB) | DOI: 10.14710/jmr.v8i2.25096

Abstract

Penyu merupakan vertebrata laut yang termasuk kedalam kategori Appendix 1 yang artinya dilarang diperdagangkan secara internasional. Selain itu penyu salah satu hewan yang paling terancam populasinya secara langsung maupun tidak langsung. Kematian tukik penyu disebabkan oleh berbagai faktor, diantaranya kerusakan habitat alami, pencemaran laut, serangan predator dan perburuan daging maupun telurnya untuk kepentingan komersial. Selain itu, menurunnya jumlah populasi penyu juga disebabkan dari infeksi jamur. Adanya jamur juga menjadi masalah di TCEC (Turtle Conservation and Education Center) yang menyebabkan tingginya tingkat kematian tukik dari penyu lekang (Lepidochelys olivacea). Maka dari itu dengan mengetahui jenis jamur yang ditemukan dapat dilakukan pengobatan serta pencegahan sesuai jamur yang menginfeksi. Tujuan dari penelitian ini adalah untuk mengidentifikasi jamur yang ditemukan pada bagian tubuh penyu lekang (L. olivacea) dan cangkang telur penyu gagal menetas. Sampel tukik dari penyu lekang berumur 10 – 14 hari didapatkan dari penangkaran penyu TCEC Bali. Sampel yang sudah diambil kemudian diswab pada media PDA dan diinkubasi selama 7 hari. Setelah itu dilakukan purifikasi hingga didapatkan koloni murni. Tahap selanjutnya yaitu dilakukannya identifikasi genus secara makroskopis dan mikroskopis pada perbesaran 40x dan 100x. Hasil penelitian memperlihatkan bahwa dari 10 sampel jamur yang diambil dari beberapa bagian tubuh penyu seperti pada mata, kaki, leher dan karapas dan cangkang telur gagal menetas saat sampling, didapatkan 15 isolat koloni jamur. Dari 15 isolat tersebut, ditemukan 5 genus Aspergillus sp, 5 genus Fusarium sp, 3 genus Pytophthora sp dan 1 isolat Trichoderma sp. Pada bagian tubuh jamur yang paling banyak ditemukan yaitu pada bagian leher  sebanyak 4 koloni dan masing-masing jenis jamur bisa ditemukan pada bagian leher. Jenis jamur yang paling banyak ditemukan pada cangkang telur penyu lekang yang gagal menetas yaitu jamur Aspergillus sp yang masing – masing memiliki bercak kuning pada cangkang telur. Selain dari cangkang telur yang memiliki bercak kuning didapatkan juga dari cangkang telur yang melunak.  Turtle is a marine vertebrata that belongs to Appendix 1 category which means it is prohibited to be traded internationally. In addition there is a sea turtle one of animals that are most under threat its population is set directly or indirectly. The death of hatchlings sea turtle was caused by various factors, including natural habitat destruction, marine pollution, predatory attacks and the hunting of meat and eggs for commercial purposes. In addition, the declining number of turtle populations is also caused by fungal infections. The presence of fungi is also a problem in TCEC which causes high mortality rates of turtles (Lepidochelys olivacea). Therefore, by knowing the type of fungus that can be found to be treated as well as prevention of appropriate fungi that infect. The purpose of this study was to identify the fungus found in the turtle body part (L. olivacea) and the turtle eggshell failed to hatch. The turtle samples from turtles aged 10-14 days were obtained from TCEC Bali turtle breeding. Samples were taken later in swabbing on PDA media and incubated for 7 days. After that purification to get a pure colony. The next stage is the identification of the genus in macroscopic and microscopic at 40x and 100x magnification. The results showed that from 10 samples of fungus taken from some parts of sea turtle body such as on eyes, feet, neck and carapace, and eggshell failed to hatch during sampling, 15 isolates of fungal colonies were found. Of the 15 isolates, found 5 genera of Aspergillus sp, 5 genus of Fusarium sp, 3 genus of Pytophthora sp and 1 isolate of Trichoderma sp. In the body of the fungus is most commonly found in the neck as much as 4 colonies and each type of fungus can be found on the neck. The most common types of fungus found in eggshell shells that fail to hatch are the Aspergillus sp fungus, each of which has yellow spots on the eggshell. Apart from the eggshell that has yellow spots it is also obtained from the softened eggshell.
Histokomparatif Organ Integumen, Intestinum, Pohon Respirasi Pada Beberapa Jenis Teripang Dari Perairan Karimunjawa Setia Nugroho, Gangsar Bayu; Hartati, Retno; Praseno, Koen
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (521.473 KB) | DOI: 10.14710/jmr.v1i1.889

Abstract

Sea cucumbers, which have significant economic values, belong to the order of Aspidochirotida, with the two main family, i.e. Holothuriidae and Stichopodidae. Biological aspect of those species has not been exploited yet, therefore he aim of this research is to compare organ histology of the species of sea cucumbers H. atra, H. edulis, P. graeffei, S. chloronotus, and S. herrmanni. This research was held on August-December 2011 and histologically. The result of this research showed that integument of H. atra, H. edulis, P. graeffei, S. chloronotus, dan S. herrmanni consist of epidermis which composed by fibril cells and dermis layer which composed by connective tissue. Intestinum of Holothuriidae is different from Stichopodidae as follows : H. atra ±10 μm form a bugles with flat ends, S. chloronotus ±40 μm form a smooth bugles with pointed ends and closely, and S. herrmanni ±30 μm form a smooth bugles with pointed ends and distantly. The respiratory trees of Holothuriidae and Stichopodidae in general had similarity. Bases on these differences can be concluded that sea cucumbers cultivation techniques need adjustment habitat and consumption of different types of feed each sea cucumbers.
STUDI PENGGUNAAN KITOSAN TERHADAP PENURUNAN KADAR AMONIAK PADA LIMBAH CAIR KILANG MINYAK OUTLET IMPOUNDING BASIN (OIB) PERTAMINA RU VI BALONGAN, INDRAMAYU Utami, Risnita Tri; Sunaryo, Sunaryo; Sedjati, Sri
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (158.362 KB) | DOI: 10.14710/jmr.v3i1.4593

Abstract

Development of industrial activities especially refining oil industry is a sector with large potential as a source of wastewater pollution. Mud waste from crude oil is the final waste from refining processes. Ammonia content of the oil refining industry is found in large quantities. This study was aimed to decrease the concentration of Ammonia used Chitosan. The study was conducted in Technologycal Laboratory of Pertamina RU VI Balongan, Indramayu on March-April 2013. The method used in this study was a completely randomized design with five treatments and three repetitions. Treatments in this study were the differences of Chitosan concentrations, i.e.: A 0,0%, %, B 0,3%, C 0,6%, D 0,9% and E 1,2% with contact time of 30 minutes. ASTM (American Society for Testing Materials), were used to analyze Ammonia concentration. The maximum adsorption of Ammonia in Chitosan solution with a concentration of 0,83% in the amount of 48,79%.
Analisis Sebaran Lebar Karapas dan Proporsi Rajungan Betina Bertelur yang Tertangkap di Perairan Demak Pradana, Henrian Rizki; Nuraini, Ria Azizah Tri; Redjeki, Sri
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (538.584 KB) | DOI: 10.14710/jmr.v8i4.24720

Abstract

ABSTRAK : Rajungan merupakan komoditas perikanan bernilai ekonomis penting dan memiliki nilai komersial yang cukup tinggi. Salah satu desa yang memproduksi rajungan adalah Desa Betahwalang. Sebagian besar rajungan hasil tangkapan di perairan Betahwalang dikirim untuk di ekspor ke luar negeri. Tingginya permintaan pasar terhadap komoditas perikanan rajungan memicu eksploitasi yang berlebihan sehingga dapat berdampak terhadap kelestarian sumber daya rajungan. Tujuan penelitian ini adalah untuk menganalisis sebaran lebar karapas dan proporsi EBF (egg berried female) rajungan di Desa Betahwalang, Demak terkait dengan upaya pengelolaan rajungan secara berkelanjutan sesuai dengan Peraturan Menteri Kelautan dan Perikanan no. 1 tahun 2015. Penelitian ini dilaksanakan pada bulan Februari – Maret 2019 di Desa Betahwalang, Demak menggunakan metode random sampling. Pengukuran rajungan dilakukan di bakul yang ada di Desa Betahwalang, Demak. Hasil penelitian menunjukkan bahwa 1003 ekor rajungan (83%) yang tertangkap berukuran >10 cm dari total 1203 rajungan tertangkap. Nisbah kelamin di Desa Betahwalang menunjukkan bahwa antara jantan dan betina seimbang (1:1,06). Sedangkan untuk betina bertelur yang tertangkap (EBF) berjumlah 81 ekor rajungan (13%). ABSTRACT : Blue Swimming Crab is one of fisheries commodity with highly important economical and commerce value. One of the village that produce blue crab is Betahwalang. Most of the crabs are exported. With high demand of blue crab resulting in over exploitation that affects the population of blue crab. The purpose of this research is to analyze the spread of carapace width and the proportion of EBF (Egg Berried Female of the blue swimming crab in Desa Betahwalang, Demak that are related with the continuous management effort of blue crab consistent with Peraturan Menteri Kelautan dan Perikanan No 1 Tahun 2015. This research was conducted on February – March 2019 at Desa Betahwalang, Demak using random sampling method. The measurement of blue crab was done on the buyer at Desa Betahwalang, Demak. The results show that 1003 blue crab (83%) that were caught had carapace width more than 10 cm from 1203 blue crab caught. The ratio of male and female crab show that male and female were equal (1:1,06). For the egg berried female (EBF) that were caught shows 81 blue crab caught (13%). 
Studi Reproduksi dan Morfometri Ikan Sembilang (Plotosus canius) Betina yang Didaratkan di Pengepul Wilayah Krobokan Semarang Dewanti, Yustin Ragil; Irwani, Irwani; Redjeki, Sri
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (127.864 KB) | DOI: 10.14710/jmr.v1i2.2030

Abstract

One of the fish part of family Plotosidae are Sembilang. This marine fish are usually consumed by the peoples as smoked fish. Peoples know well this fish became of their good teste and has quite nutritious. Although Sembilang not been many studied, but research on aspects of reproduction and morphometry of Sembilang is necessary to prevent the decline in this fish populations. The research was conducted in October 2011 and was continued in April 2012. The samples of the fish taken in the fish landing base in Krobokan, Semarang region. The total number of the fish samples taken as many as 30 fish, with the length between 35 cm to 70 cm and total weight ranged from 250 grams to 1600 grams. The results of the data analysis for the GSI values in both periods (October 2011 and April 2012) obtained between 5,583 % to 33,417 %. The values of Lm in the study period of October 2011 was 36,808 cm and in period of April 2012 was 26,927 cm. Diameter of fish eggs obtained from the both periods (October 2011 and April 2012) between 0,1 cm to 0,8 cm. Length and weight regression of fish in the October 2011 showed W=(0,0171)L2,691 and in the April 2012 showed W=(0,0234)L2,621. The values of condition factor in the October 2011 between 0,843 to 1,111 and in the April 2012 between 0,812 to 1,324.
POTENSI PIGMEN KAROTENOID BAKTERIUM ENDOFIT LAMUN Thalassia hemprichii SEBAGAI SUMBER SENYAWA ALAMI PENANGKAL RADIKAL BEBAS DPPH (1,1-Difenil-2-Pikrilhidrazil) Permata, Rr. Citra; Riniatsih, Ita; Radjasa, Ocky Karna
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (178.42 KB) | DOI: 10.14710/jmr.v3i3.6001

Abstract

Karotenoid merupakan salah satu jenis pigmen yang penting bagi kesehatan manusia yang berfungsi sebagai antioksidan. Karotenoid merupakan pigmen kuning, orange sampai merah yang biasanya ditemukan dalam sayuran, buah-buahan serta bakteri dan fungi. Penelitian ini bertujuan mengetahui aktivitas antioksidan dari pigmen karotenoid bakteri endofit lamun Thalassia hemprichii serta mengidentifikasi bakteri tersebut secara molekuler. Analisis pigmen dilakukan dengan menggunakan spektrofotometer UV 1601, uji antioksidan dengan metode DPPH dan identifikasi bakteri dilakukan dengan PCR 16S rDNA. Penelitian ini dilaksanakan pada bulan Oktober 2013 – April 2014. Sampel lamun didapatkan dari perairan Teluk Awur Jepara. Hasil penelitian menunjukkan bahwa bakterium Th1 mempunyai pigmen kuning dengan tiga puncak panjang gelombang yaitu 460 nm, 439.5 nm, 417 nm sesuai dengan serapan panjang gelombang pigmen karotenoid yaitu 300-600 nm. Identifikasi bakteri secara molekuler 16S rDNA menunjukkan bahwa isolat Th1 mempunyai homologi 97% dengan Erythrobacter vulgaris. Aktivitas penghambatan pigmen bakteri Th1 yaitu 18,97%.. Berdasarkan hasil penelitian dapat disimpulkan bahwa pigmen karotenoid bakterium Th1 mempunyai potensi sebagai senyawa alami penangkal radikal bebas DPPH.

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