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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 G-Tech : Jurnal Teknologi Terapan 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
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ANALISIS FINANSIAL PENGOLAHAN EMPING JAGUNG DI KABUPATEN GUNUNGKIDUL DAERAH ISTIMEWA YOGYAKARTA FINANCIAL ANALYSIS OF CORN CHIPS PROCESSING IN DISTRICT GUNUNGKIDUL YOGYAKARTA REGION Subagiyo, Subagiyo
Agros Journal of Agriculture Science Vol 16, No 2: Edisi Juli 2014
Publisher : Faculty of Agriculture, Janabadra University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (281.516 KB)

Abstract

Penelitian ini betujuan untuk megetahui kelayakan finansial pengolahan emping jagung, penelitian dilakukan pada bulan Agustus 2014 di Kabapaten Gunungkidul dengan menggunakan metode survai dan  wawancara langsung dengan sembilan pengrajin emping jagung. Untuk mengetahui kelayakan finansial digunakan analisis menggunakan R/C, B/C dan BEP. Hasil penelitian menunjukkan bahwa usaha pengolahan emping jagung di Kabupaten Gunungkidul telah lama dilakukan lebih dari 10 tahun. Kapasitas produksi rata-rata dalam satu kali proses produksi 200 kg jagung dan dalam satu minggu lima kali pengolahan. Berdasarkan analisis finansial usaha pengolahan emping jagung secara ekonomis layak dan menguntungkan yaitu dengan R/C 2,01, B/C 1,01 dan TIP 50 kg serta TIH Rp 9.933/kg.This study aims to determine the financial feasibility of processing corn chips, research conducted in August 2014 at Gunung Kabapaten using survey and interviews with nine craftsmen corn chips. Used to determine the financial feasibility analysis using the R/C, B/C and BEP. The results showed that the corn chips processing business in Gunungkidul has been carried out more than 10 years. The average production capacity in a single production process 200 kg of maize and five times in one week processing. Based on the financial analysis of the business of processing corn chips is economically feasible and advantageous that the R/C of 2.01, B/C 1.01 and TIP 50 kg and TIH Rp 9933 / kg
ANALISIS KELAYAKAN INTRODUKSI TANAM GANDA (DOUBLE ROW) UBI KAYU PADA USAHATANI SISTEM TUMPANGSARI DI LAHAN KERING DI KABUPATEN GUNUNGKIDUL Subagiyo, Subagiyo; Charisnalia, Charisnalia
Agricore Vol 2, No 1 (2017)
Publisher : Departemen Sosial Ekonomi Faperta Unpad

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Abstract

Penelitian ini bertujuan untuk menganalisis kelayakan introduksi tanam ganda (double raw) ubi kayu pada system tumpangsari di lahan kering Kabupaten Gunungkidul. Penelitian dilaksanakan pada bulan Januari sampai dengan bulan Oktober 2016 di Desa Namberan, Paliyan, Kabupaten Gunungkidul. Metodelogi yang digunakan dengan pendekatan on partisipatif  farm research dan survai, dengan jumlah responden 30 orang. Data yang terkumpul selanjutnya dianalisis menggunakan pendekatan analisis Marginal Benefit Cost Ratio (MBCR). Hasil Penelitian menunjukkan bahwa introduksi tanam ganda ubi kayu pada sistem tumpangsari yang biasa dilakukan oleh para petani kabupaten Gunungkidul yaitu tanaman ubi kayu ditanam di awal musim hujan sekaligus menanam padi, setelah padi dipanen disusul dengan tanaman kacang tanah disisipi dengan tanaman jagung. Sedangkan ubi kayu di panen paling akhir, dengan system tumpangsari ini petani dalam satu tahun panen 3 kali yaitu padi, jagung kacang tanah dan ubi kayu. Berdasarkan analisis kelayakan introduksi tanam ganda pada usahatani dengan sistem tumpangsari memberikan tambahan pendapatan dalam satu tahun sebesar Rp 1.530.700  dengan nilai MBCR ratio sebesar 2,33.
Project Based Learning on Casting of Aluminium Tensile Test Specimen for Mechanical Engineering Students, State Polytechnic of Malang on Odd Semester of Academic Year 2016/2017 Hadi, S.; Agustriyana, L.; Subagiyo, Subagiyo
Journal of Education Reseach and Evaluation Vol 1, No 1 (2017)
Publisher : LPPM Undiksha

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (628.98 KB) | DOI: 10.23887/jere.v1i1.9844

Abstract

The problem faced by students is the difficulty of understanding on metal casting topic in the lesson of Materials Technology which is conducted by lectures only. The research objective is to find out the improvement of score on metal casting topic for 1G students from Mechanical Engineering Department, State Polytechnic of Malang (Polinema) in odd Semester, Academic Year 2016/2017. Research method were facilitation of applied metal casting through pretest of metal casting, added a description of the design and modification of metal mould for Aluminium, visit to a home industry of Aluminium casting, students practice of Aluminium casting in a home industry, student groups presentation and discussion in the subtopics of (1) design and mould manufacture, (2) Aluminium casting practice, and (3) tensile testing with cast Aluminium specimen, as well as posttest on metal casting. The research result is an increasing in average score from 46.56 to 53.6 (22%) that means by adding the practice to the theory involved is increase a significant impact on understanding of Aluminium casting for students.
DAMPAK REVITALISASI KAWASAN PELABUHAN DONGGALA TERHADAP KESEJAHTERAAN MASYARAKAT SEKITAR Subagiyo, Subagiyo
Katalogis Vol 5, No 8 (2017)
Publisher : Katalogis

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Abstract

This study aims to: (1) Examine the impact of the revitalization of the Donggala port to the development of the region over the last 3 years (2) Examine the impact of Donggala port revitalization in the welfare of the surrounding community. The sample in this study was 89 people Boya Village community consists of 34 workers, 25 merchants and 30 members of the public. Overall samples taken by each group is determined by the formula of proportional allocation technique (Riduan, 2004) .Teknik data analysis in this study using nonparametric statistical analysis, namely by presenting results of surveys and questionnaires on the perception of respondents. Then to prove the hypothesis that after revitalization study Donggala port area are improving the welfare of the surrounding community, used descriptive statistical analysis with the Wilcoxon Signed-Rank test by using SPSS for Windows version 16. These results indicate that: (1) Revitalization of the Port area Donggala began in 2014, with the rehabilitation and restoration of institutional and physical prevervasi significant impact on the development of the region, it can be seen from the indicators: Income, Infrastructure, Transport (2) Revitalization of the Port area of Donggala effective in promoting the welfare of the surrounding community. There are significant differences between categories of income, employment and transport. (3) The income of people increased after the revitalization of the port, but a decline in revenue after deducting the Consumer Price Index (CPI). This decrease is caused, by the role and function of the port is still not optimal (4) The number of workers accommodated in TKBM Cooperative Donggala port is not currently increasing. This happens because of Donggala port is still not operate properly (5) From the analysis Wilcoxon Signed-Rank impact of the revitalization of the Donggala port to the welfare of the surrounding community, it can be seen from the indicators of people's income and the development of infrastructure and transport modes.
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (139.16 KB) | DOI: 10.14710/jmr.v2i1.2064

Abstract

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 ± 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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1091.42 KB) | DOI: 10.14710/jmr.v9i1.25784

Abstract

ABSTRAK : 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 60–179 mm dan distribusi berat sebesar 23–251 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%  (1658 female blue swimming crabs) of 3000 blue swimming crab samples. The ratio of male and female   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

Abstract

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%)  dengan tiga pengulangan.  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 meningkatkan  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  kecuali elongasi), konsentrasi alginat terbaik yang memenuhi Japanese Industrial Standard dan standar SNI 7188.7:2016 adalah 0,5% 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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (240.45 KB) | DOI: 10.14710/jmr.v2i1.2048

Abstract

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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (509.232 KB) | DOI: 10.14710/jmr.v8i3.25272

Abstract

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 µg/disk, 1000 µg/disk, 2000 µg/disk, dan 4000 µg/disk. Aktivitas antibakteri yang diperoleh dari perbedaan konsentrasi yang diberikan berbeda secara nyata  dengan adanya peningkatan Activity Unit (AU) di setiap kenaikan konsentrasi. Aktivitas antibakteri terbesar yang diperoleh dari ekstrak daging H. atra pada konsentrasi 4000 µg/disk terhadap bakteri V. alginolyticus  (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  4000 µg/disk terhadap bakteri V. alginolyticus  (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). 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 µg/disk, 1000 µg/disk, 2000 µg/disk, and 4000 µg/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.  The largest activity unit was obtained from meat extract at a concentration of 4000 µg/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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (636.987 KB) | DOI: 10.14710/jmr.v9i1.24729

Abstract

ABSTRAK : Rajungan (Portunus pelagicus) memiliki nilai ekonomi tinggi, berbanding lurus dengan penangkapan yang meningkat. Tingkat pemanfaatan yang tidak konservatif akan mempengaruhi  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 nelayan  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 72–167  mm dan distribusi berat sebesar 40–303 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 negatif  baik rajungan jantan maupun rajungan betina. 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%  (1621 female blue swimming crab) of 3000 blue swimming crab samples. The ratio of male and female  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) sized≤10 cm and 86.2% (2587 blue swimming crab) sized ≥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.
Co-Authors Agus Sabdono Agus Triyanto Agus, Elsa Lusia Agustriyana, L. Agustriyana, L. 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 Faizal, Elka 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 Mayestino, Alexander Machicky Moh. Hartono Muhammad Zainuri Muzaki, Mochamad Nasril, Nasril Nicky Suwandhy Widhi Supriyanto Nila Alia Nurchajat, Nurchajat Nurvian Amrullah, Radhi Oktaviani, Featy Pranoto, Bayu 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 Sari, Nurlia Pramita 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 Wicaksono, Hangga Widodo, Radhian Wikanarto Witono Witono Ziah, Ainun