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All Journal Katalogis ILMU KELAUTAN: Indonesian Journal of Marine Sciences BULETIN OSEANOGRAFI MARINA Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Journal of Marine Research Jurnal Kelautan Tropis Agricore: Jurnal Agribisnis dan Sosial Ekonomi Pertanian Unpad Edu Elektrika Journal Jurnal Pertanian Agros Journal of Educational Research and Evaluation INTEK: Jurnal Penelitian IJEEIT : International Journal of Electrical Engineering and Information Technology Journal of Aquaculture and Fish Health Ensiklopedia Social Review Indonesian Journal of Oceanography Indonesian Community Journal JURNAL ABDIMAS PLJ Venus: Jurnal Publikasi Rumpun Ilmu Teknik Evrimata: Journal of Mechanical Engineering Edusight Jurnal Pengabdian Masyarakat (EduJPM) Welfare: Jurnal Pengabdian Masyarakat Jurnal Lentera ICT

Subagiyo Subagiyo

Staf Pengajar Program Studi Ilmu Kelautan Fakultas Perikanan dan Ilmu Kelautan UNDIP Jl. Prof. H. Soedarto, SH Tembalang Semarang

Author-ID : 386889

Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Other

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Studi Pemanfaatan Ekstrak Rumput Laut Gracilaria verrucosa Sebagai Suplemen Pakan Untuk Meningkatkan Pertumbuhan Udang Putih (Litopenaeus vannamei) Dan Mengendalikan Populasi Bakteri Vibrio Sasmaya, Eko; Subagiyo, Subagiyo; Ridlo, Ali
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

The shrimp fishery has a high economic value. Data from the Ministry of Maritime Affairs and Fisheries (2011) states that the group of marine crustaceans in Indonesia has high potential with production reaching 381,288 tons / yr. From these results more than half of its cultivation. Aquaculture has the risk of which is the onset of the disease caused by viruses, fungi, bacteria, fungi and parasites that cause high levels of mortality and loss of quality of meat. One way to overcome these problems is to use feed supplementation. This study aimed to determine the effect of supplementation of extracts G. verrucosa on feed on shrimp growth (weight and length), specific growth rate, survival rate of shrimp, feed conversion ratio, and Vibrio bacterial populations. The research was conducted through laboratory experimental method to the study design completely randomized design (CRD) with 3 treatments and each treatment with three replications. The treatments tested were feed by supplementing 0.5%, 1% and 2% respectively supplementation performed 3 times repetition. Feed obtained by extraction G. verrucosa, that is by G. verrucosa put in a pot submerged Stainless steel up to boiling and boil for Â± 2 hours and obtained extracts G. verrucosa, then performed using a rotary solvent evaporation process to obtain dry extracts G. verrucosa. Further supplementing the feed. Results showed that the extract of G. verrucosa able to improve and control the growth of white shrimp vibrio bacteria populations in the intestines white shrimp (L. vannamei). In this study the condition of seaweed extract supplementation G. verrucosa at a concentration of 2% were able to increase the weight of shrimp growth of 131.43% and a growth of 32.50% shrimp length than controls during 28 days of treatment, as well as being able to control populations of bacteria vibrio, vibrio that reduces the total amount of 78.18% compared to controls at the third week.

Rasio Jenis Kelamin dan Tingkat Kematangan Gonad pada Rajungan (Portunus pelagicus) Linnaeus, 1758 (Malacostraca:Portunidae) yang Didaratkan di Kelurahan Pacar, Kabupaten Rembang Simanjuntak, Sri Devi; Yudiati, Ervia; Subagiyo, Subagiyo
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

ABSTRAK :Â Rajungan (Portunus pelagicus) memiliki nilai ekonomi tinggi, dimana berbanding lurus dengan penangkapan yang meningkat. Tingkat pemanfaatan yang tidak mengindahkan ukuran dan kondisi rajungan dapat mempengaruhi struktur ukuran dan stok rajungan di suatu perairan. Penelitian ini bertujuan untuk melakukan kajian morfometri, rasio jenis kelamin dan tingkat kematangan gonad rajungan yang didaratkan di Kelurahan Pacar, Kabupaten Rembang. Metode yang digunakan dalam penelitian bersifat deskriptif dan eksploratif. Pengamatan rajungan dilakukan pada salah satu pengepul di Kelurahan Pacar. Rajungan yang diteliti berdasarkan morfometri, rasio seksual dan tingkat kematangan gonad selama 30 hari. Informasi ini dapat dijadikan pedoman dalam menentukan kebijakan mengenai pengelolaan perikanan rajungan yang berkelanjutan. Hasil dari penelitian diketahui bahwa ratio kelimpahan rajungan jantan sebesar 45% (1342 ekor); rajungan betina 55% (1658 ekor) dari 3000 ekor sampel rajungan. Rasio perbandingan jantan dan betina 0,80:1 berdasarkan uji chi square. Berdasarkan distribusi ukuran lebar karapas rajungan di perairan Kelurahan Pacar adalah berkisar antara 60â€“179 mm dan distribusi berat sebesar 23â€“251 gram. Distribusi tingkat kematangan gonad pada perairan Kelurahan Pacar adalah 558 ekor pada TKG 1; 761 ekor pada TKG 2; dan 339 pada TKG 3. Data menunjukkan bahwa pola pertumbuhan rajungan yang ada di perairan Kelurahan Pacar adalah allometrik negatif yaitu pertumbuhan lebar karapas lebih cepat bertambah daripada berat tubuhnya baik rajungan jantan maupun rajungan betina.ABSTRACT : Blue swimming crab (Portunus pelagicus) has a high economic value, which is causing the crab catch to rise as well. The catch rate that does not consider the size and maturity of sea crab can affect the size structure and population stock of sea crab in waters. This research to study morphometry, sexual ratio and maturity level of the gonads landed in Pacar Village, Rembang Regency.The method used in this study descriptive and exsplorative. Observation of blue swimming crab samples was carried out in one of the collectors in the village. Blue swimming crab was observed based on morphometry and sexual ratio for 30 days. The results of the study revealed that the abundance of male blue swimming crab was 45% (1342 male blue swimming crabs) and the abundance of the female blue swimming crabs was 55%Â (1658 female blue swimming crabs) of 3000 blue swimming crab samples. The ratio of male and femaleÂ Â 0.80 ; 1 based on the chi square. Based on the size distribution of the width of the blue swimming crab carapace in the waters of Pacar Village it range from 60-179 mm and the distribution of weight 23-251 grams. The distribution of gonad maturity level in the waters Pacar Village is 558 female blue swimming crab at TKG 1; 761 female blue swimming crab at TKG 2; and 339 female blue swimming crab at TKG 3. Data is showed that the blue swimming crab growth pattern in Pacar Village waters was negative allometric both male and female blue swimming crab.

Pengaruh Konsentrasi Alginat Dengan Gliserol Sebagai Plasticizer Terhadap Sifat Fisik Dan Mekanik Bioplastik Langit, Novita Thea Puspita; Ridlo, Ali; Subagiyo, Subagiyo
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v8i3.25256

Munculnya permasalahan lingkungan akibat plastik sintetik mendorong perlunya penelitian bahan kemasan mudah terurai (bioplastik). Salah satu bahan yang tersedia di alam dan berpotensi sebagai pembentuk bioplastik adalah alginat karena mampu membentuk gel. Bioplastik dari alginat memiliki sifat yang tidak fleksibel sehingga perlu ditambah gliserol sebagai plasticizer. Penelitian ini bertujuan untuk mengetahui pengaruh konsentrasi alginat dari Sargassum sp. terhadap sifat fisik dan mekanik bioplastik dengan penambahan gliserol dan CaCl2. Materi penelitian ini adalah alginat hasil ekstraksi Sargassum sp. yang diambil dari Perairan Pantai Sundak, Gunung Kidul. Penelitian ini menggunakan metode eksperimental laboratoris yang terdiri dari empat perlakuan konsentrasi alginat (0,5%, 1%, 3% dan 5%)Â dengan tiga pengulangan.Â Sifat bioplastik yang diuji meliputi sifat fisik (ketebalan, ketahanan air, kehilangan berat) dan sifat mekanik (kuat tarik dan elongasi). Data yang diperoleh dianalisis menggunakan analisis sidik ragam (ANOVA). Hasil penelitian menunjukkan semakin tinggi konsentrasi alginat akan meningkatkanÂ ketebalan, ketahanan air dan kuat tarik bioplastik namun menurunkan elongasi dan kehilangan berat bioplastik. Konsentrasi alginat berpengaruh terhadap sifat fisik (ketebalan, ketahanan air, kehilangan berat) dan sifat mekanik (kuat tarik Â kecuali elongasi), konsentrasi alginat terbaik yang memenuhi Japanese Industrial Standard dan standar SNI 7188.7:2016 adalah 0,5%Â The emergence of environmental problems due to synthetic plastics has led to the need to research biodegradable packaging materials (bioplastics). One of the ingredients available in nature and has the potential to form bioplastics is alginate because it is capable of forming gel. Bioplastic from alginate has inflexible properties so it needs to be added by glycerol as a plasticizer. This research aims to determine the effect of alginate concentration from Sargassum sp. on the physical and mechanical properties of bioplastics with the addition of glycerol and CaCl2. The method of this research is alginate from Sargassum sp. taken from Sundak Beach Waters, Gunung Kidul. This research used a laboratory experimental method consisting of four treatments of alginate concentration (0.5%, 1%, 3% and 5%) with three repetitions. The properties of the bioplastics tested included physical properties (thickness, water resistance, weight loss) and mechanical properties (tensile strength and elongation). Data obtained were analyzed using variance analysis (ANOVA). The results showed that the higher the concentration of alginate would increased thickness, water resistance and tensile strength of bioplastics but decreased the elongation and weight loss of bioplastics. The alginate concentration affects the physical properties (thickness, water resistance, weight loss) and mechanical properties (tensile strength and except elongation), the best alginate concentrations that meet the Japanese Industrial Standard and SNI 7188.7: 2016 are 0.5%

Uji Penggunaan Bacillus sp. sebagai Kandidat Probiotik Untuk Pemeliharaan Rajungan (Portunus sp.) Linggarjati, Kharisma Firdaus; Djunaedi, Ali; Subagiyo, Subagiyo
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Blue crab is one of the economically marine commodities and have high potential export. During this blue crab requirement derived from nature catches because in blue crab aquaculture not yet good branch out. To low survival rate of blue crab caused by bacterium vibrio disease, in addition to the content of nitrogen and phosphate can also affect the blue crab medium. This research as a purpose to test the effect of probiotic bacillus aplication to water quality and the total number of bacteria in the blue crab medium. the research was conducted with 2 stages, that is isolation and selection bacillus bacteria stages as probiotic and testing phase the effect of probiotic bacillus on water quality and the total number of bacteria. The result showed that probiotic bacillus with density 106 cfu/ml to reduce the content of ammonia (NH3), nitrite (NO2) and the total number of bacteria. While probiotics with density 105 cfu/ml to reduce the total number of bacteria in the blue crab medium, but have not been able to reduce the content of ammonia (NH3) and nitrite (NO2).

Potensi Ekstrak Kasar Teripang Holothuria atra, Jaeger, 1833 (Holothuroidea : Holothuriidae) Dari Pulau Panjang, Jepara Damanik, Sonny Rieldo; Yulianto, Bambang; Subagiyo, Subagiyo
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Aktivitas antibakteri yang terdapat dalam Holothuria atra dapat dimanfaatkan sebagai makanan fungsional yang dapat mengendalikan mikroflora dalam saluran pencernaan. Tujuan dari penelitian ini adalah untuk mengetahui potensi aktivitas antibakteri dari teripang H. atra terhadap bakteri B. cereus (gram positif) dan V. alginolyticus (gram negatif) sebagai foodborne pathogens. Sampel teripang H. atra diambil dari ekosistem lamun perairan Pulau Panjang dengan metode purposive sampling method untuk mengambil teripang berukuran panjang > 16 cm sebanyak 1 kg. Sampel H. atra dibersihkan lalu dipisahkan antara daging dan jeroannya, kemudian di maserasi menggunakan pelarut etil asetat dengan perbandingan 1:3 (w:v) selama 1x24 jam. Hasil maserasi diuapkan dengan rotary evaporator pada suhu 38o C. Ekstrak daging dan jeroan yang diperoleh adalah 669,8 mg dan 625,2 mg. Uji aktivitas antibakteri dilakukan dengan metode paper disk diameter 6 mm dengan konsentrasi 500 Âµg/disk, 1000 Âµg/disk, 2000 Âµg/disk, dan 4000 Âµg/disk. Aktivitas antibakteri yang diperoleh dari perbedaan konsentrasi yang diberikan berbeda secara nyataÂ dengan adanya peningkatan Activity Unit (AU) di setiap kenaikan konsentrasi. Aktivitas antibakteri terbesar yang diperoleh dari ekstrak daging H. atra pada konsentrasi 4000 Âµg/disk terhadap bakteri V. alginolyticusÂ (gram negatif) dan B. cereus (gram positif) masing-masing adalah 14214,08 mm2/ml dan 10508,62 mm2/ml. Aktivitas antibakteri terbesar yang diperoleh dari ekstrak jeroan H. atra pada konsentrasi Â 4000 Âµg/disk terhadap bakteri V. alginolyticusÂ (gram negatif) dan B. cereus (gram positif) masing-masing adalah 7858,72 mm2/ml dan 4919,68 mm2/ml. Berdasarkan penelitian ini, daging dan jeroan teripang H. atra keduanya memiliki aktivitas antibakteri terhadap bakteri B. cereus (gram positif) dan V. alginolyticus (gram negatif).Â The antibacterial activity contained in the bioactive compounds of sea cucumber Holothuria atra can be used as functional foods that can control microflora in the digestive tract. The purpose of this study was to determine the potential antibacterial activity of sea cucumber H. atra against B. cereus (gram positive) and V. alginolyticus (gram negative) as foodborne pathogens. The samples of H. atra in this study were taken from the seagass ecosystem of Panjang Island waters using the purposive sampling method so that the sea cucumbers taken were > 16 cm long. The obtained sea cucumber samples were cleaned and separated between the meat and the viscera, then macerated using ethyl acetate with a ration of 1:3 (w/v) for 24 hours. The solvent was evaporated using rotary evaporator at 38o C. The obtained meat and viscera extract of H. atra in this study were 669,8 mg and 625,2 mg. The antibacterial activity test was carried out using the diffusion method with a 6 mm paper disk (Kirby-Bauer Method), and the concentrations of each extract are 500 Âµg/disk, 1000 Âµg/disk, 2000 Âµg/disk, and 4000 Âµg/disk. The antibacterial activity of extracts from different concentrations were significantly different in line with the increasing results of activity unit (AU) at each increased concentration.Â The largest activity unit was obtained from meat extract at a concentration of 4000 Âµg/disk. The antibacterial activity unit from meat extract against V. alginolyticus (gram-negative) and B. cereus (gram-positive) are 14214,08 mm2 / ml and 10508,62 mm2 / ml. The largest antibacterial activity unit of viscera extract against V. alginolyticus and B. cereus are 7858,72 mm2 / ml and 4919,68 mm2 / ml. Based on this study, meat and viscera extracts from H. atra both have antibacterial activity against B. cereus (gram-positive) and V. alginolyticus (gram-negative).

Biologi Rajungan Ditinjau dari Aspek Morfometrik dan Sex Ratio yang Didaratkan di Perairan Rembang Putra, Muhammad Juli Hendra; Subagiyo, Subagiyo; Nuraini, Ria Azizah Tri
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

ABSTRAK : Rajungan (Portunus pelagicus) memiliki nilai ekonomi tinggi, berbanding lurus dengan penangkapan yang meningkat. Tingkat pemanfaatan yang tidak konservatif akan mempengaruhi Â ukuran dan kondisi rajungan di suatu populasi, serta stok rajungan di suatu perairan. Penelitian bertujuan untuk mengetahui kajian konservasi rajungan (Portunus pelagicus) berdasarkan morfometri dan sex ratio yang didaratkan oleh nelayanÂ di Perairan Desa Gegunung Wetan, Kecamatan Rembang, Kabupaten Rembang. Metode yang digunakan dalam penelitian bersifat deskriptif. Pengamatan rajungan dilakukan pada salah satu pengepul di Desa. Rajungan di amati berdasarkan morfometri dan sex rasio selama 30 hari. Hasil Informasi dapat dijadikan pedoman dalam menentukan kebijakan mengenai pengelolaan perikanan rajungan yang berkelanjutan dan bersifat konservatif. Hasil dari penelitian diketahui bahwa kelimpahan rajungan jantan sebesar 46% (1379 ekor) rajungan betina 56% (1621 ekor) dari 3000 ekor sampel rajungan. Rasio perbandingan jantan dan betina 1:1,18. Berdasarkan distribusi ukuran lebar karapas rajungan di perairan Rembang adalah berkisar anatara 72â€“167Â mm dan distribusi berat sebesar 40â€“303 gram. Distribusi tingkat kematangan gonad pada perairan Rembang adalah 608 ekor pada TKG 1; 658 ekor pada TKG 2; dan 355 pada TKG 3. Data menunjukan bahwa pola pertumbuhan rajungan yang ada di perairan Rembang adalah allometrik negatifÂ baik rajungan jantan maupun rajungan betina.Â Abstract: Blue swimming crab (Portunus pelagicus) has a high economic value, directly proportional to the increased catch. The level of non-conservation utilization will affect the size and condition of the blue swimming crab in a population, as well as the blue swimming crab stock in a waters. This study is aimed to determine the blue swimming crab conservation study (Portunus pelagicus) based on morphometry and sex ratio brought by fishermen in the waters of Gegunung Wetan Village, Rembang District, Rembang Regency. The method used in this study is descriptive. Observation of blue swimming crab samples was carried out in one of the collectors in the village. Blue swimming crab was observed based on morphometry and sex ratio for 30 days. Informative results can be used as a guide in determining policies regarding sustainable and conservation management of blue swimming crab fisheries. The results of the study revealed that the abundance of male blue swimming crab was 46% (1379 male blue swimming crab) and the abundance of the female blue swimming crab was 56%Â (1621 female blue swimming crab) of 3000 blue swimming crab samples. The ratio of male and femaleÂ is 1:1.18. Based on the size distribution of the width of the blue swimming crab carapace in the waters of Getanung Wetan it ranges from 72-167 mm and the distribution of weight is 40-303 grams. 13.8% (413 blue swimming crab) sizedâ‰¤10 cm and 86.2% (2587 blue swimming crab) sized â‰¥10 cm. The distribution of gonad maturity level in the waters of Gegunung Wetan is 608 female blue swimming crab at TKG 1; 658 female blue swimming crab at TKG 2; and 355 female blue swimming crab at TKG 3. There were 355 female blue swimming crab (22%) of the total female blue swimming crab laying eggs. The data showed that the blue swimming crab growth pattern in Gegunung Wetan waters was negative allometric both male and female blue swimming crab.

Aktivitas Antibakteri Ekstrak Metanol Rumput Laut Gracilaria verrucosa, Greville, 1830 (Florideophyceae : Gracilariaceae) di Balai Besar Perikanan Budidaya Air Payau Jepara Widodo, Radhian Wikanarto; Subagiyo, Subagiyo; Pramesti, Rini
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Infeksi bakteri patogen menjadi masalah kesehatan dunia. Antibiotik untuk penanggulangan infeksi menjadikan bakteri resisten karena pemakaiannya tidak sesuai dosis. Permasalahan ini dapat diatasi salah satunya dengan pencarian sumber antibiotik baru termasuk diantaranya pada rumput laut. Penelitian ini bertujuan untuk menentukan aktivitas antibakteri ekstrak metanol G. verrucosa terhadap Escherichia coli, Bacillus cereus, Staphylococcus epidermidis, Pseudomonas aeruginosa, Vibrio anguillarum, dan Vibrio alginolyticus. Penelitian dilakukan dengan metode eksperimental laboratoris. Sampel rumput laut hasil budidaya Balai Besar Perikanan Budidaya Air Payau (BBPBAP) Jepara dikeringkan kemudian dimaserasi dengan metanol selama 2x24 jam. Aktivitas antibakteri ekstrak diuji pada konsentrasi 100 Âµg/disk, 50 Âµg/disk, 25 Âµg/disk, dan 10 Âµg/disk kemudian dilakukan uji fitokimia. Hasil uji aktivitas antibakteri menunjukkan bahwa ekstrak metanol G. verrucosa tidak memiliki aktivitas antibakteri. Uji fitokimia menunjukkan ekstrak mengandung flavonoid, saponin, steroid, dan triterpenoid.Â Pathogenic bacterial infection become a world health problem. Antibiotics for prevention of infection make bacteria resistant due to the incorrect dosage. One of these problems can be overcome by finding a new source of antibiotics including seaweed. This study aims to determine the antibacterial activity of methanol extract of G. verrucosa against Escherichia coli, Bacillus cereus, Staphylococcus epidermidis, Pseudomonas aeruginosa, Vibrio anguillarum, and Vibrio alginolyticus. Laboratory experimental method was used in this study. Seaweed samples from the cultivation at Brackish Water Aquaculture Center (BBPBAP) Jepara were dried and then macerated with methanol for 2x24 hours. The antibacterial activity of the extract was tested at concentration of 100 Âµg / disk, 50 Âµg / disk, 25 Âµg / disk, and 10 Âµg / disk then phytochemical tests were carried out. The results of antibacterial activity test showed that G. verrucosa methanol extract did not have antibacterial activity. The phytochemical test showed that seaweed extract contained flavonoids, saponins, steroids, and triterpenoids

Jumlah Total Bakteri dan Bakteri Coliform Pada Air Laut dan Sedimen Perairan Laut Kecamatan Kendal Hanifah, Husna; Suprijanto, Jusup; Subagiyo, Subagiyo
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

ABSTRAK: Perairan Laut Kendal terhubung dengan Sungai Buntu, Sungai Kendal, dan Sungai Blorong yang membawa limbah dari kegiatan di darat seperti Mandi Cuci Kakus (MCK), peternakan, tambak, pertanian, dan kegiatan kapal dan Tempat Pelelangan Ikan (TPI). Hal ini akan mempengaruhi kualitas bakteriologis perairan laut Kecamatan Kendal. Penelitian ini dilakukan untuk menganalisa kualitas bakteriologis air dan sedimen perairan laut Kecamatan Kendal berbasis jumlah total bakteri dan Coliform. Sampel air laut dan sedimen diambil pada bulan Oktober Tahun 2019. Analisa bakteriologis dilakukan di Laboratorium Balai Pengujian Mutu Hasil Perikanan Semarang menggunakan metode berdasarkan ISO 6222: 1999 dan SNI 01-2332.3 â€“ 2015, SNI ISO 9308 â€“1: 2010 dan SNI 01-2332.1 â€“ 2006. Hasil penelitian menunjukkan jumlah total bakteri pada sampel air laut di stasiun 1 berkisar antara 190 Cfu - 240 Cfu, di stasiun 2 antara 340 Cfu - 380 Cfu. Jumlah total Coliform pada sampel air laut di stasiun 1 dan 2 adalah 1 Cfu/ 100 ml. Jumlah total bakteri pada sampel sedimen di stasiun 1 dan 2 yaitu antara 19.000 Cfu - 90.000 Cfu dan jumlah total coliform di kedua stasiun tersebut sebesar 3,6 MPN/g Coliform. Nilai total Coliform ini berada dibawah baku mutu air laut untuk biota laut, yang maksimum adalah 1.000 dengan toleransi <10%. Sedangkan untuk jumlah total bakteri tidak diatur dalam baku mutu air laut. Tetapi secara umum jumlah total bakteri di air laut terdapat 106 sel/ ml. Sehingga nilai hasil analisis total bakteri menunjukkan kualitas air laut yang masih baik.Â ABSTRACT: Kendal sea waters are connected to the Buntu River, Kendal River, and the Blorong River which carry waste from human activities such as domestic waste, fishery, agriculture, ship activities, and fish auction activities. These activities can influence the bacteriological quality of the waters of Kendal District. This research was conducted to analyze the bacteriological quality of seawater and sediments from Kendal Seawaters based on the total number of bacteria and Coliform. Seawater and sediment samples were taken on October 2019. Bacteriological analysis was conducted at the Semarang Fisheries Product Quality Testing Laboratory (BPMHP) using methods based on ISO 6222: 1999 and SNI 01-2332.3 - 2015, SNI ISO 9308-1: 2010 and SNI 01-2332.1 - 2006. The results showed the total number of bacteria in sea water samples at station 1 ranged from 190 Cfu - 240 Cfu, at station 2 between 340 Cfu-380 Cfu. The total amount of Coliform in seawater samples at station 1 and 2 are 1 Cfu / 100 ml. The total number of bacteria in sediment samples at station 1 and 2 are between 19,000 Cfu - 90,000 Cfu and the total number of coliforms at both stations are 3.6 MPN / g Coliform. The total value of this coliform is below the sea water quality standard for marine life, the maximum is 1,000 with a tolerance of <10%. Where as the total number of bacteria is not regulated in the seawater quality standard. But in general the total number of bacteria in seawater is 106 cells / ml. So the value of the total bacterial analysis shows that the quality of sea water is still good.

Monitoring Konsentrasi Timbal pada Kerang Hijau (Perna viridis) Budidaya Di Perairan Tambak Lorok Rachman, Rhima Rismiyati; Subagiyo, Subagiyo; Ridlo, Ali
Journal of Marine Research Vol 13, No 2 (2024): Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v13i2.40045

Tambak Lorok termasuk perairan yang dikelilingi dengan banyak aktifitas manusia seperti industri, pemukiman, pelabuhan, serta dijadikan sebagai lokasi untuk melakukan budidaya kerang hijau. Kegiatan tersebut menghasilkan limbah padat, gas, dan cair yang diduga menjadi sumberpencemaran logam berat di perairan. Budidaya kerang hijau di Tambak Lorok menggunakan metode bagan dan bambu tancap dengan spat yang dibiarkan menempel alami. Kerang hijau hasil budidaya di Perairan Tambak Lorok banyak diminati oleh masyarakat karena harganya murah dan memiliki konsentrasi gizi yang tinggi. Penelitian ini betujuan untuk mengetahui kondisi budidaya dan mengevaluasi kerang hijau hasil budidaya di Tambak Lorok berdasarkan konsentrasi timbal. Uji konsentrasi timbal dilakukan menggunakan alat AAS (Atomic Absorption Spectrophotometry) dan analisis secara deskriptif. Hasil analisis menunjukkan pola sebaran kerang hijau merata dengan kepadatan yang tinggi. Konsentrasi timbal dalam kerang hijau berdasarkan hasil penelitian yaitu kurang dari 0,340 mg/kg. Nilai ini berada dibawah nilai – nilai pada tahun sebelumnya. Tambak Lorok includes waters surrounded by many human activities such as industry, settlements, ports, as well as being used as a location for cultivating green mussels. These activities produce solid, gas and liquid waste which are suspected to be the source of heavy metal pollution in the waters. Cultivating green mussels in Tambak Lorok uses the bagan method and sticking bamboo with spat which is left to stick naturally. Green mussels cultivated in Tambak Lorok waters are in great demand by the public because they are cheap and have a high concentration of nutrients. This study aims to determine the conditions of cultivation and evaluate green mussels cultivated in Tambak Lorok based on lead concentrations. Lead concentration test was carried out using AAS (Atomic Absorption Spectrophotometry) and descriptive analysis. The results of the analysis show that the green mussel distribution pattern is evenly distributed with high density. Based on research results, the concentration of lead in green mussels is less than 0.340 mg/kg. This value is below the values in the previous year.

Co-Authors Agus Sabdono Agus Triyanto Agus, Elsa Lusia Agustriyana, L. Agustriyana, L. Ahmad Damiri, Ahmad Ahmad Fadli Aini, Fica Aida Nadhifatul Ali Djunaedi Ali Ridlo Amalia, Zakiyah Aninditia Sabdaningsih Bambang Yulianto Charisnalia, Charisnalia Damanik, Sonny Rieldo Dhaniswara, Erwin Eko Sasmaya Ervia Yudiati Etik Puspitasari, Etik Farida, Kania Faridha, Nike Fauziyah, Gina Firdaus, Shabriel Auliya Fitriadi, Ren Hamizar, Hamizar Hanan Setia Abadi Hanifah, Husna Haris Puspito Buwono HARIYANTO HARIYANTO Haromain, Achmad Herida, Azalia Puspa Hermin Pancasakti Kusumaningrum hidayat, dwi taufik Ibnu Pratikto Indah, Zuraedah Ita Riniatsih Jusup Suprijanto Kharisma Firdaus Linggarjati Klau, Fransiska Reni Kuswandi Kuswandi Langit, Novita Thea Puspita Larasati, Stefanie Jessica Henny Lisa Agustriyana Lutviani, Metya Martiadi, Rizwan Mayestino, Alexander Machicky Moh. Hartono Muhammad Zainuri Muzaki, Mochamad Nasril, Nasril Nila Alia Nurchajat, Nurchajat Nurvian Amrullah, Radhi Oktaviani, Featy Patoni, Patoni Purwitasari, Maria Evy Putra, Muhammad Juli Hendra Putut Har Riyadi R.N. Akhsanu Takwim, R.N. Akhsanu Rachman, Rhima Rismiyati Raden Ario Retno Hartati Ria Azizah Tri Nuraini Rini Pramesti Riskitasari, Septyana Romadhon Romadhon S. Hadi Samsul Hadi Sari Prabandari, Sari Sarjito - Sebastian Margino Setiawan Setiawan Simanjuntak, Sri Devi Siti Duratun Nasiqiati Rosady, Siti Duratun Nasiqiati Rosady slamet budi prayitno Soedibya, Petrus Hary Tjahja Sri Wiwoho Mudjanarko, Sri Wiwoho Sudirman Sudirman Sunar, Sunar Surya Kencana, Dadang Suwandi, Nicky Syamsul Hadi Syamsurizal - - Talakua, Eddy Lybrech Talifatim Machfuroh, Talifatim Tardan, Herawati Wahyuningsih, Candra Widodo, Radhian Wikanarto Winata, Koko Adya Witono Witono Ziah, Ainun

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Journal : Journal of Marine Research