scholarly journals KEKAYAAN JENIS PORTUNIDAE DI SISI SHIPPING LINE SELAT MADURA

2006 ◽  
Vol 11 (2) ◽  
pp. 93-96
Author(s):  
Bambang Irawan ◽  
Agoes Soegianto
Keyword(s):  
Economic Value ◽  
Spring Tide ◽  
Scylla Paramamosain ◽  
Sampling Station ◽  
Local Distribution ◽  
Portunus Pelagicus ◽  
Shipping Line ◽  
Portunid Crab ◽  
Sampling Times ◽  
Monitoring Activity

A monitoring activity for the existence of portunid crabs in the narrowest part of Madura Strait has been done from 2001 to 2004. Crabs have been collected in June or July each year in day time during spring tide. Crab collection was carried out in four sampling station (I to IV) using 0,5 cm trawl net for 10 minutes netting in each time. The results show that during four year monitoring six species of portunid crab has been captured. Among the six species three of them, Charybdis affinis, C. anisodon, and Portunus pelagicus were collected each year even with difference level in local distribution. C. affinis and P. pelagicus have been monitored in the same three stations, and C. anisodon has also been monitored in three stations but differs from other three portunid crab species, C. annulata. P. trituberculatus, and Scylla paramamosain were very rare and have been captured in less then three sampling times collection. We conclude that in this area the portunid crab has been dominated by C. affinis which have less economic value, and for C. anisodon even the number higher than other portunid genus the occurrence is not stabil as in C. affinis.

Kajian Morfometri dan Tingkat Kematangan Gonad Rajungan di Perairan Betahwalang, Demak

2021 ◽  
Vol 10 (2) ◽  
pp. 175-183
Author(s):  
Iqbal Maulana ◽  
Irwani Irwani ◽  
Sri Redjeki
Keyword(s):  
Time Series ◽  
Size Structure ◽  
Growth Parameters ◽  
Carapace Width ◽  
Economic Value ◽  
Survey Method ◽  
Swimming Crab ◽  
Female Crab ◽  
Portunus Pelagicus ◽  
Gonad Maturity

Rajungan (Portunus pelagicus) merupakan komoditas laut yang memiliki nilai ekonomis yang tinggi, dimana berbanding lurus dengan penangkapan yang terus meningkat. Tingkat pemanfaatan yang tidak mengindahkan ukuran dan kondisi rajungan dapat mempengaruhi struktur ukuran dan stok rajungan di suatu perairan. Penelitian ini bertujuan untuk mengetahui distribusi ukuran, hubungan lebar dan berat rajungan serta distribusi tingkat kematangan gonad (TKG) di perairan Betahwalang, Demak. Penelitian menggunakan metode survey dengan analisis yang bersifat deskriptif yang dilakukan secara “time-series”. Pengamatan sampel rajungan sebesar 10% dari hasil tangkapan yang didaratkan oleh setiap nelayan di pengepul rajungan.. Hasil dari penelitian ini menujukkan dari 3030 ekor rajungan yang diamati diketahui distribusi lebar karapas rajungan berkisar antara 35 – 185 mm dan kisaran berat sebesar 10 – 350 gram. Rajungan yang terdapat di perairan Betahwalang memiliki pertumbuhan yang bersifat allometrik positif pada rajungan jantan dan betina pada bulan Januari serta Februari.  Hasil nilai b sebesar 3,29 dan 3,08 (Januari & Februari) pada rajungan jantan. Nilai b sebesar 3,10 dan 3,15  pada rajungan betina (Januari & Februari) serta nilai b sebesar 3,14 pada keseluruhan rajungan. Sehingga diketahui pertumbuhan lebar karapas lebih cepat dibandingkan bobot rajungan. Sedangkan distribusi tingkat kematangan gonad rajungan betina adalah 21% pada TKG 1; 63% pada TKG 2; serta 16% pada TKG 3, dengan ukuran pertama kali matang gonad adalah 141,51 mm. Blue swimming crab (Portunus pelagicus) is a marine commodity 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 study aims to determine the size distribution,the relationship of width and weight of Blue swimming crab and distribution of gonad maturity in Betahwalang, Demak. There’s a descriptive survey method used in this study with time-series observations. The sample size is about 10% of the total number landed crab from each fisherman. The results of this study showed that from 3030 crabs observed, the distribution of crab carapace width ranged from 35 – 185 mm and the weight range at 10 – 350 gram. The results showed the all crabs has a positive allometric on growth parameters. The value of  b 3,29 and 3,08 (January & February) in male blue swimming crab, 3.10 and 3.15 (January & February) on female sea crabs, and 3.14 on whole sea crabs. So it is known that the growth of carapid width is faster than the weight of crab. While the distribution of female crab gonad maturity level is 21% in level 1; 63% in level 2; and 16% in level 3, with the first size of mature gonad at 141,51 mm.

scholarly journals ISOLATION OF GLUCOSAMINE HCL FROM SCYLLA PARAMAMOSAIN AND DETERMINATION BY HPLC

2019 ◽  
Vol 81 (5) ◽  
Author(s):  
Astrid Kusuma Putri ◽  
Sugijanto Kartosentono ◽  
Noor Erma Nasution Sugijanto
Keyword(s):  
High Performance ◽  
Negative Impact ◽  
Economic Value ◽  
Value Added ◽  
Scylla Paramamosain ◽  
Glucosamine Hydrochloride ◽  
Treatment Groups ◽  
A Value ◽  
Potential Applications ◽  
Naoh Solution

Scylla paramamosain is one of crustaceans that has economic value in Indonesia. About 40-50% of the total weight of crustaceans goes as waste after being processed to be human food. The Crustacean waste needs to be reduced in order to minimize the negative impact on the environment. Whereas products derived from crustacean shell also has medical value (e.g. Chitosan, Glucosamine HCl). Glucosamine is an amino monosaccharide acting as a substrate for the production of aggrecan and proteoglycans and thus have therapeutic activity in osteoarthritis. The present study has been aimed to prepare glucosamine hydrochloride (Glu-HCl) from S. paramamosain waste by acid hydrolysis in four treatment groups and their quantitation by high-performance liquid chromatography (HPLC). The best condition from this experiment is shell deproteination with 3% NaOH solution (w/v 1:6), at 85ºC, for 30 minutes, demineralisation with 1N HCl (w/v 1:10), at 75ºC, for 1.5 hours, depigmentation with NaClO 0.38%, at room temperature, for 1 hour, and hydrolysis with conc. HCl (w/v 1:20), at 85ºC, for 18 minutes, resulted in the yield of 6.15 ± 0.62% and quantitation by HPLC analysis of obtained glucosamine hydrochloride was 98.48 ± 0.74%. Further, this study describes the recycling of S. paramamosain waste to a value-added product which is having potential applications in the field of food and medicine.

scholarly journals Kajian Tingkat Kerentanan Rajungan (Portunus pelagicus) di Perairan Desa Tunggulsari Kabupaten Rembang

2021 ◽  
Vol 10 (1) ◽  
pp. 147-157
Author(s):  
Parameswari Iccha Nirmalabuddhi Wishnuputri ◽  
Sri Redjeki ◽  
Retno Hartati
Keyword(s):  
Water Quality ◽  
Growth Pattern ◽  
Economic Value ◽  
Quality Parameters ◽  
Swimming Crab ◽  
Portunus Pelagicus ◽  
Male And Female ◽  
Over Exploitation ◽  
The Village ◽  
Swimming Crabs

Rajungan (Portunus pelagicus) adalah salah satu sumber daya hayati laut Indonesia. Rajungan merupakan komoditas utama  perikanan di Indonesa, baik untuk lokal maupun ekspor. Nilai ekonomis rajungan yang tergolong tinggi mengakibatkan penangkapan rajungan dilakukan secara besar-besar dan dapat memicu terjadinya kepunahan. Penelitian bertujuan untuk mengetahui tingkat kerentanan rajungan di Perairan Desa Tunggulsari dan mengetahui karakteristik morfometri dari rajungan yang ditangkap pada lokasi tersebut. Metode yang digunakan dalam penelitian ini adalah metode Productivity and Susceptibility Analysis (PSA). Wawancara dilakukan kepada 60 nelayan di Desa Tunggulsari. Pengukuran parameter kualitas perairan meliputi suhu, oksigen terlarut, salinitas, dan pH. Pengukuran morfometri dilakukan pada salah satu pengepul di desa. Hasil dari wawancara diketahui bahwa nelayan di Desa Tunggulsari menggunakan 2 macam alat tangkap yaitu bubu lipat dan jaring insang dasar. Penilaian atribut produktivitas rajungan masuk dalam kategori tinggi, sedangkan penilaian atribut kerentanan tergolong pada resiko rendah untuk penggunaan kedua alat tersebut. Nilai MSC untuk alat tangkap bubu lipat adalah 96,0 dan 98,2 untuk alat tangkap jaring insang dasar. Nilai MSC > 80 menunjukkan bahwa tingkat kerentanan rajungan pada lokasi tersebut masuk pada kategori rendah. Selanjutnya, pola pertumbuhan rajungan di Desa Tunggulsari adalah allometrik negatif baik untuk rajungan jantan maupun betina. Hal ini menunjukkan pertumbuhan panjang dan lebar karapas lebih cepat dibandingkan penambahan berat rajungan. The blue swimming crab (Portunus pelagicus) is one of the Indonesian marine biological resources. The blue swimming crab is a main commodity of fisheries in Indonesia, both for local and export. Economic value of blue swimming crab classified as high involve over-exploitation of blue swimming crab and can lead to extinction. This research is aimed to determine level of vulnerability of blue swimming crab in Tunggulsari waters and to discover morphometry characteristic of blue swimming crab that caught at that location. The method used in this research is Productivity and Susceptibility (PSA) method. Interviews were conducted with 6 fishermen in the village of Tunggulsari. Measurement of water quality parameters including temperature, dissolved oxygen, salinity, and pH. Morphometry measurement was carried out in one of the collectors in the village. The results of the interview revealed that fishermen in the village of Tunggulsari used 2 fishing tools namely bubu lipat and bottom set gillnet. Assessment of blue swimming crab productivity attributes is included in the high category, while the assessment of vulnerability attributes is classified as low risk for the use of both tools. The MSC value for bubu lipat is 96,0 and 98,2 for bottom set gillnet. The MSC value is more than 80 indicates that the level of blue swimming crab vulnerability at that location is in the low category. Further, blue swimming crab growth pattern in the village of Tunggulsari are negative allometrics for both male and female blue swimming crabs. This shows the growth in length and width carapace is faster than the addition of blue swimming crab weight.

scholarly journals HUBUNGAN JENIS KEPITING BAKAU (Scylla Spp.) DENGAN MANGROVE DAN SUBSTRAT DI TAMBAK SILVOFISHERY ERETAN, INDRAMAYU (Relationship of Mudcrab (Scylla Spp.) with Mangrove and Substrate in Silvofishery Ponds, Eretan, Indramayu)

2016 ◽  
Vol 6 (1) ◽  
pp. 59 ◽  
Author(s):  
. Sunarto ◽  
. Sulistiono ◽  
Isdradjad Setyobudiandi
Keyword(s):  
Mangrove Forest ◽  
Economic Value ◽  
Habitat Characteristics ◽  
Scylla Paramamosain ◽  
West Java ◽  
Relationship Of

<p>ABSTRACT<br />Mudcrab is one of the fishery commodity with high economic value in Indonesia. High market and price stimulated the development of the mudcrabs business in this country. The aim of this research was to evaluate interaction between habitat characteristics and the mudcrabs (Scylla spp.) species. The research was conducted in silvofishery ponds of Eretan village, Indramayu, West Java from September-November 2013 and August-September 2014. Sampling was conducted at five stations. They were BDR (Brackishwater dominated Rhizophora sp.), BDA (Brackishwater dominated Avicennia sp.), BCDR (Brackishwater cannal dominated Rhizopora sp.), BCDA (Brackishwater cannal dominated Avicennia sp.) and SMF (Side of the mangrove forest). The result showed there were two species of the mudcrabs Scylla paramamosain and Scylla olivacea. S. paramamosain was dominated than S. olivacea at all stations. Total number of the S. paramamosain was 107 ind (consisted of 67 male and 40 female), while total number of the S. olivacea was 28 ind (consisted of 17 male and 11 female). Composition of the mudcrabs species in each station was 91% S. paramamosain and 9% S. olivacea at BDR, 89% S. paramamosain and 11% S. olivacea at BDA, 86% S. paramamosain and 14% S. olivacea at BCDR, 68% S. paramamosain and 32% S. olivacea at BCDA, 73% S. paramamosain and 27% S. olivacea at SMF. Differences between kinds of mudcrab in each stations showed there are interaction between kinds of mudcrabs with habitat characteristics.</p><p><br />Keywords: Indramayu, mangrove, mudcrabs, substrate,</p><p>-------</p><p>ABSTRAK</p><p>Kepiting bakau (Scylla spp.) merupakan salah satu komoditas perikanan di Indonesia yang bernilai ekonomis tinggi. Luasnya pemasaran dan tingginya nilai jual kepiting bakau membuat bisnis tersebut semakin berkembang. Penelitian ini bertujuan untuk mengetahui hubungan keberadaan jenis kepiting bakau dengan karakteristik habitatnya. Penelitian ini dilakukan dari Agustus-November 2013 dan Agustus-September 2014 pada kawasan tambak silvofishery Desa Eretan, Indramayu, Jawa Barat. Pengambilan sampel dilakukan pada lima stasiun pengamatan diantaranya TSDR (Tambak silvofishery dominan Rhizopora sp.), TSDA (Tambak silvofishery dominan Avicennia sp.), KDR (Kanal dominan Rhizopora sp.), KDA (Kanal dominan Avicennia sp.) dan PHM (Pinggiran hutan mangrove). Hasil penelitian ini menunjukkan bahwa terdapat dua jenis kepiting bakau yaitu Scylla paramamosain dan S. olivacea. Di lokasi penelitian jumlah Scylla paramamosain yang tertangkap sebanyak 107 individu yang terdiri dari 67 jantan dan 40 betina, sedangkan jumlah S. olivacea yang tertangkap sebanyak 28 individu yang terdiri atas 17 jantan dan 11 betina. Hasil penelitian menunjukkan pada umumnya jumlah S. paramamosain yang tertangkap melebihi S. olivacea. Persentase kepiting bakau yang tertangkap pada tiap stasiun pengamatan yaitu 91% S. paramamosain dan 9% S. olivacea pada TSDR, 89% S. paramamosain dan 11% S. olivacea pada TSDA, 86% S. paramamosain dan 14% S. olivacea pada KDR, 68% S. paramamosain dan 32% S. olivacea pada KDA, 73% S. paramamosain dan 27% S. olivacea pada PHM. Perbedaan jumlah jenis kepiting bakau yang diperoleh pada tiap stasiun penangkapan menunjukan bahwa terdapat hubungan antara jenis kepiting bakau dengan habitat hidupnya.</p><p><br />Kata kunci: Indramayu, mangrove, kepiting bakau, substrat,</p>

scholarly journals DAMPAK IMPLEMENTASI PERMEN KP No. 1 TAHUN 2015 TERHADAP KONDISI SOSIAL EKONOMI NELAYAN DI JAWA TENGAH Impacts of Implementation PERMEN KP No. 1 Tahun 2015 to Social Economic Fisher Condition in Central Java

2017 ◽  
Vol 12 (1) ◽  
pp. 60
Author(s):  
Imam Triarso ◽  
Bambang Argo Wibowo
Keyword(s):  
Social Economic ◽  
Positive Impact ◽  
Economic Value ◽  
Social Value ◽  
Scoring Method ◽  
Portunus Pelagicus ◽  
Resource Potential ◽  
Central Java

ABSTRAK Diberlakukannya Permen KP No. 1 Tahun 2015 tentang Penangkapan Lobster (Panulirus spp),  Kepiting (Scylla spp) dan Rajungan (Portunus pelagicus) dengan tujuan untuk mengelola potensi sumberdaya Crustacea, disebabkan adanya fenomena semakin turunnya produksi Crustacea dan semakin kecilnya ukuran yang ditangkap. Tujuan penelitian ini adalah  untuk mengetahui dampak implementasi Permen KP No. 1/2015 tersebut terhadap kondisi sosial ekonomi nelayan di sentra penangkapan Lobster di Kabupaten Kebumen dan sentra penangkapan Rajungan di Kabupaten Demak dengan menggunakan metoda skoring. Hasil penelitian menunjukkan bahwa implementasi Permen KP No. 1/2015 ternyata berdampak positif terhadap nelayan Lobster di Kabupaten Kebumen dilihat dari segi nilai ekonomi nilai sosial. Namun, berbeda halnya dengan nelayan Rajungan di Kabupaten Demak, dimana kurang berdampak positif, baik nilai ekonomi maupun nilai sosial. Kondisi yang terjadi di Kabupaten Demak tersebut dikarenakan oleh ulah para bakul pengumpul/pengepul yang masih tetap membeli Rajungan, meskipun kondisinya bertelur dan ukurannya kecil. Selain itu, tidak diimbanginya pengawasan atau tindakan hukum bagi para pelanggar Permen KP No. 1/2015 tersebut sehingga telah menimbulkan adanya kecemburuan sosial antar nelayan setempat dan luar daerah. Kata kunci: Dampak, Permen KP No. 1/2015, Nelayan Lobster dan Rajungan  ABSTRACT The implementation of the PERMEN KP No. 1 Tahun 2015 with the aim to review manage resource potential Crustaceans, due to the phenomenon of the decline in production Crustaceans and captured the increasingly smaller sizes. Research objectives to know impact of  implementation Permen KP No. 1/2015 to Socio-Economic Fisher Conditions in Central of Java, especially at the center catching Lobster fishers in Kebumen District and center catching Crab in Demak District with using scoring method. The results showed that the implementatioo of Permen KP No. 1/2015 turned positive impact Lobster fishers in Kebumen District, seen view of economic value and social value. However,with different well asCrab in Demak District, that negaitive impact. In Demak District is caused by that remains buying Crabs, although the condition is laying andsmall size. Keywords: Impacts, Permen KP No. 1/2015, Crustaceans Fishers 

scholarly journals DIVERSITAS DAN DISTRIBUSI IKAN DI SEGARA ANAKAN CILACAP

2014 ◽  
Vol 1 (2) ◽  
pp. 147 ◽  
Author(s):  
Suprastini Suprastini ◽  
Erwin Riyanto Ardli ◽  
Agus Nuryanto
Keyword(s):  
Spatial Distribution ◽  
Environmental Factors ◽  
Fish Larvae ◽  
Habitat Preferences ◽  
Economic Value ◽  
Principal Component ◽  
Environmental Parameters ◽  
Sampling Technique ◽  
Sampling Station ◽  
Highly Correlated

Fish is one of the aquatic commodities with significant economic value, and Segara Anakan areas is a habitat for valuable fishes for local fisherman. Segara Anakan is a eutrophic waters and serves as nursery and spawning ground and also provide an optimal environment for several species fish larvae to grow, either sedentary or migratory species. Therefore it is suggested that diverse species inhabit Segara Anakan and different part of those areas has different species because different species commonly exhibit different habitat preferences. The objectives of this research were to determine the diversity and spatial distribution of fish species in Segara Anakan Cilacap. This research was a survey with the Cluster Random Sampling was implemented as sampling technique. Species diversity was analyzed descriptively, as well as the spatial distribution. The relationships between environmental parameters and spatial distribution were analyzed using Principal Component Analysis. Environmental factors such as temperature, pH, salinity, and water DO were measured. The result showed that Stolephorus indicus was the most dominant species in Segara Anakan. The spatial distribution of fishes in every sampling station was found fluctuated. The environmental factors and fish were found highly correlated.

scholarly journals Proportion and Total of Commodities Blue Swimming Crab (Portunus pelagicus Linnaeus, 1758) Catches in Gebang Mekar Village, Cirebon Regency, West Java Using Crab Gillnet and Collapsible Crab Trap

2020 ◽  
pp. 28-33
Author(s):  
Iwang Gumilar ◽  
Dedi Supriadi ◽  
Nabilla Shabrina ◽  
Alexander M. A. Khan
Keyword(s):  
Economic Value ◽  
Secondary Data ◽  
Mesh Size ◽  
Primary Data ◽  
Swimming Crab ◽  
Phase Effect ◽  
West Java ◽  
Portunus Pelagicus ◽  
Fishing Gears

Blue swimming crab (Portunus pelagicus) is one of the high economic value commodities which causes increased efforts to catch blue swimming crab in Indonesia. The effort of catching continues to increase the blue swimming crab resources in the nature that has decreased. Cirebon Regency is one of the largest blue swimming crab fishing centers in West Java with a total value of blue swimming crab production in 2017 by 7,347 tons/year. This research was conducted to determine the selecitivity level of the crab gillnet and collapsible crab trap based on the proportion and total of catches obtained in Gebang Mekar Village, Cirebon Regency. Research was conducted in September 2019 – October 2019 in Gebang Mekar Village. For this research we used are primary data; collected directly during the observations includes catch type and weight of the catches and then interviews with several crab gillnet and collapsible crab trap fisherman and secondary data; data from official agencies and some literature. Our research suppose the moonlight phase effect of the blue swimming crab catch. Based on the research, it can be concluded that the crab gillnet with 3.5 inch mesh size and collapsible crab trap that operated in Gebang Mekar Village may be called a selective fishing gears but crab gillnet is more  eficient as compared to collapsible crab.

scholarly journals KEPITING EKONOMIS PENTING, Portunus pelagicus DI INDONESIA

OSEANA ◽  
2018 ◽  
Vol 43 (4) ◽  
Author(s):  
Tyani Fitrian
Keyword(s):  
Economic Value ◽  
Marine Resources ◽  
Portunus Pelagicus ◽  
Sustainable Resources

THE ECONOMICALLY IMPORTANT CRABS IN INDONESIA: Indonesia have many marine resources, one of it is crab. The worldwide have many spesies of crabs and the Indo-malaysia have approximatly 1000 spesies of crabs. During a few last years, the amount of crabs demand have increased. Portunidae is become one of the crabs which have important economic value in Indonesia. However, relying the production on natural capture gives on effect the number of crab populations has decreased.This paper discuss about charasteristios of crab especially Portunus pelagicus (Family : Portunidae) which have benefit economically value and should have managed wisely to become sustainable resources.

scholarly journals Biologi Rajungan Ditinjau dari Aspek Morfometrik dan Sex Ratio yang Didaratkan di Perairan Rembang

2020 ◽  
Vol 9 (1) ◽  
pp. 65-74
Author(s):  
Muhammad Juli Hendra Putra ◽  
Subagiyo Subagiyo ◽  
Ria Azizah Tri Nuraini
Keyword(s):  
Sex Ratio ◽  
Conservation Management ◽  
Economic Value ◽  
Swimming Crab ◽  
Maturity Level ◽  
Portunus Pelagicus ◽  
Male And Female ◽  
Gonad Maturity ◽  
Total Female ◽  
The Village

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.

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