scholarly journals PENGEMBANGAN BUDIDAYA KEPITING BAKAU (Scylla sp) SISTEM SILVOFISHERY UNTUK MELESTARIKAN HUTAN BAKAU DI KABUPATEN KEPULAUAN MERANTI PROVINSI RIAU

2020 ◽  
Vol 12 (2) ◽  
pp. 101
Author(s):  
Budijono Parni ◽  
Eko Prianto ◽  
Muhammad Hasbi ◽  
Andri Hendrizal

Hutan mangrove merupakan salah satu ekosistem pesisir yang berperan penting dalam mendukung kehidupan biota laut. Keberadaan hutan mangrove di Kabupaten Kepulauan Meranti saat ini terus mengalami degradasi yang berimplikasi terhadap menurunnya fungsi ekologis, sosial dan ekonomi masyarakat lokal. Upaya meminimalisir kerusakan hutan mangrove terus dilakukan oleh pemerintah daerah dan masyarakat lokal hingga saat ini. Salah satu upaya yang dapat dilakukan melalui budidaya kepiting bakau dengan sistem sylvofishery. Metode penelitian yang digunakan adalah eksperimen dan wawancara yang dilakukan di Kelurahan Teluk Belitung dan Desa Bandul Kabupaten Meranti. Data dan informasi dihimpun dari penelusuran, dan penelahaan data dan informasi hasil penelitian serta laporan kegiatan yang terkait dengan budidaya kepiting bakau dengan sistem silvofishery. Hasil kajian menunjukkan potensi pengembangan budidaya laut di Kabupaten Kepulauan Meranti tersebar di beberapa pulau seperti Pulau Padang, Tebing Tinggi dan Pulau Rangsang dengan luas lahan sebesar 438 ha. Luasnya lokasi budidaya didukung pula dengan kualitas perairan yang cukup bagus dan cocok untuk dikembangkan budidaya kepiting dengan sistem sylvofishery. Ujicoba penerapan sylvofishery kepiting bakau model kurungan tancap diperoleh tingkat survival rate mencapai 70 % dan pertumbuhan rata-rata berkisar 100 – 140 g per bulan. Pemeliharaan kepiting bakau dengan sistem sylvofishery selama 3 bulan dapat memberikan keuntungan dan tambahan penghasilan per bulan sebesar Rp. 1.070.150. Dalam satu siklus pembesaran jika kondisi normal dapat mengembalikan investasinya sehingga sylvofishery kepiting bakau layak dijadi usaha alternatif bagi masyarakat pesisir.Mangrove forest is one of the coastal ecosystems were plays a role in supporting marine life. Existence of mangrove forests in the Meranti Kepulauan district is experiencing degradation which has implications for the decline to ecological, social and economic functions of the local community. The efforts for minimize damage of mangrove forests have been carried out by local governments and local communities. One of the effort could be done through the cultivation of mud crabs with sylvofishery system. Experiment method was applied and interview was done in Teluk Belitung and Bandul villages, Meranti Regency. Data and information were collected and had been analyzed and activities reported that related to mud crab culture using the silvofishery system. The resut of the study showed that potential development of marine culture in the Kepulauan Meranti district is spread across several islands such as Padang Island, Tebing Tinggi and Pulau Rangsang with an area of 438 ha. The extent of the aquaculture site is also supported by good waters quality and suitable for developing mud crab culture with the sylvofishery system. The trial application of the mud crab silvofishery model of fixed confinement obtained a survival rate of up to 70% and an average growth of around 100-140 g per month. Maintenance of mangrove crabs with the sylvofishery system for 3 months can provide benefits and additional income per month of IDR. 1,070,150. In one cycle of enlargement if normal conditions, it’s can return the investment so the mangrove crab sylvofishery deserves to be an alternative effort for coastal communities.

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Sulistiono Sulistiono ◽  
Nurul Musyariafah Yahya ◽  
Etty Riani

Mangrove forests are ecosystems that make up coastal areas and river estuaries. The examples of mangrove ecosystems found in Indonesia are in Segara Anakan, Central Java. One of the aquatic biota with the economic value found in the mangrove forest ecosystem is the mud crab (Scylla spp.). The purpose of this study was to assess the distribution of mangrove crabs (Scylla spp.) to the presence of mangrove species in the mouth of the Donan River, Segara Anakan. A sampling of crabs and observations of mangrove vegetation were carried out at five stations spread from the river to the sea. The results showed that there were three types of mangrove crabs caught in the vicinity of the study, namely Scylla tranquebarica, S. olivacea, and S. serrata. The types of mangroves found include Rhizophora apiculata, R. mucronata, Avicennia rumphiana, A. alba, A. officinalis, and Nypa. Regression analysis showed that mangrove density correlated with the abundance of Scylla tranquebarica and Scylla olivacea, but contradicts the abundance of Scylla serrate. PCA analysis showed that the Crab species Scylla tranquebarica and Scylla olivacea were associated with mangroves of Avicennia alba, Avicennia rumphiana, and Rhizophora apiculata. Meanwhile, Scylla serrata crabs are associated with Avicennia officinalis.


2019 ◽  
Vol 25 (1) ◽  
pp. 15
Author(s):  
Aisyah Aisyah ◽  
Setiya Triharyuni ◽  
Eko Prianto ◽  
Husnah Husnah

Kawasan estuari merupakan wilayah yang kaya akan unsur hara di daerah pantai. Perubahan ekosistem pantai, seperti terjadinya pendangkalan menyebabkan penurunan luasan mangrove. Dampak yang terjadi merupakan penyumbang bagi kerentanan sumberdaya kepiting bakau di daerah tersebut. Tujuan penelitian ini adalah untuk mengetahui tingkat resiko potensi kerentanan sumber daya kepiting bakau dan keberlanjutannya di estuari Sungai Mahakam Kalimantan Timur. Analisis kerentanan menggunakan perangkat lunak PSA (Productivity and Susceptibility Analysis). Hasil analisis menunjukkan bahwa potensi kepiting bakau di Eestuari Mahakam mempunyai kerentanan tingkat rendah (tingkat kerentanan =1,3). Nilai produktivitas (kemampuan pulih sumber daya) menunjukan nilai yang lebih tinggi (2,1) dari pada nilai susceptabilitas (tingkat resiko sumber daya ikan terhadap aktivitas perikanan di perairan tersebut) yaitu 1,9. Dengan kondisi tersebut maka peluang keberlanjutan ketersediaan kepiting bakau di estuari Mahakam berada dalam tingkat sedang.Estuaries constitute an extremely valuable natural resource in the coastal areas. The coastal ecosystem changes such as deforestation of the estuarine caused the decrease of mangrove forestry. These impacts directly contribute to the vulnerability of mud crab resources. The purpose of this research was to determine the risk level of potential vulnerability of mangrove crab resources in the Mahakam estuary. Vulnerability analysis using Productivity and Susceptibility Analysis (PSA) software. The results showed that mangrove crabs in the Mahakam estuary were low vulnerable (vulnerability level of 1.3). Value of productivity (the ability to recover resources) higher than susceptibility (level of risk of fish resources to fisheries activities in those areas). It, means that the chances for sustainability of mangrove crab in Mahakam estuary were medium level.


Author(s):  
Muhammad Yusri Karim ◽  
Khairul Amri ◽  
Hasni Yulianti Azis ◽  
Nurfadilah ◽  
Alimuddin ◽  
...  

Mangrove crab silvofishery system is one of the potential aquaculture activities to be developed because it is supported by the availability of extensive mangrove areas. This research was carried out in the Mangrove Area of Mandalle Village, Pangkep Regency, South Sulawesi. The study was aimed to determine the best density of survival, growth, and chemical composition of the body of female mangrove crabs (Scylla olivacea) maintained by the silvofishery system. The research container used a step cage made of bamboo measuring 2.25 m2 wide. Tested animals used were female mangrove crabs measuring 155 ± 1.0 g which were kept for 40 days. The study was designed using a randomized block design consisting of four density treatments with three replications each. The four densities were: 5,10, 15 and 20 crabs/cage. The results of the analysis of variance showed that the difference in density has a very significant effect (p <0.01) on the survival, growth and biochemical composition of the female body of mangrove crabs. The best survival, growth, and biochemical composition produced the best density of 5 and 10 individuals, while the lowest density was 20 individuals.  


2014 ◽  
Vol 1 (1) ◽  
pp. 14
Author(s):  
Muhammad Robi ◽  
Erlangga Erlangga

Kepiting bakau (Scylla serrata) merupakan jenis golongan Crustaceae   yang mengandung protein hewani yang cukup tinggi dan memiliki nilai ekonomis yang tinggi. Ablasi mata merupakan salah satu cara untuk menghilangkan hambatan perkembangan telur (gonad) pada kepiting bakau. Rancangan penelitian yang digunakan adalah Rancangan Acak Lengkap (RAL) non factorial dengan 4 perlakuan dan 3 ulangan. Adapun perlakuan dalam penelitian ini adalah perlakuan A (ablasi satu pasang mata), perlakuan B (ablasi mata kiri), C (ablasi mata kanan), D (tanpa ablasi).   Hasil penelitian menunjukkan bahwa kecepatan kematangan gonad tertinggi pada perlakuan C (ablasi mata kanan) yaitu pertumbuhan gonad mencapai 21,53% dan terendah terjadi  D (tanpa ablasi)  pertumbuhan gonad hanya 14,8%. Analisa statistik dengan uji F menunjukan bahwa ablasi mata berpengaruh terhadap kecepatan kematangan gonad kepiting bakau. Pertambahan bobot tertinggi  terdapat pada perlakuan C (ablasi mata kanan) yaitu sebesar 2,67 gr kemudian disusul oleh D (tanpa ablasi)  sebesar 1,89 gr  dan terakhir  pada B (ablasi mata kiri) dengan nilai rata-rata sebesar 0,77 gr. Tingkat kelangsungan hidup terbaik terdapat pada perlakuan D (tanpa ablasi)   yaitu 100%, perlakuan B (ablasi mata kiri) 77,77%, perlakuan C (ablasi mata kanan) 66,66% dan kelansungan hidup terendah terjadi pada perlakuan A (ablasi satu pasang mata) 0%. Rata-rata kualitas air selama penelitian adalah suhu 27 0C dan Ph 7,65.Mangrove crab (Scylla serrata) have been classifying in Crustaceae clas that containing high animal protein and high economic value. Ablation of the eye is an solution to eliminate the egg development (gonads) barriers in the mangrove crab. The research design used a completely randomized design (CRD) non- factorial with 4 treatments and 3 replications. Treatment in this study were the treatment of A (ablation of the pairs of eyes), treatment B (left eye ablation), treatment C (right eye ablation), D (without ablation). The results showed that the highest rate of gonadal maturation was in treatment C (right eye ablation) where gonadal development growth reached 21.53 %, whereas the lowest was in treatment D (without ablation) where gonadal development growth was only 14.8 %. Statistical analysis by F test showed that ablation of the eye was affected the mud crab gonadal maturity. The Weight gain was found highest in the treatment C (right eye ablation) that reached 2.67 g and followed by treatment D (without ablation) 1.89 grams and the last in the treatment B (left eye ablation) with was an average value 0.77 grams. The higest survival rate was found in treatment D (without ablation) 100 %, treatment B (left eye ablation) 77.77 %, treatment C (right eye ablation) 66.66 % and the lowest survival rate was occurred in treatment A (ablation of the pairs of eyes) 0 %. The avarge values of water quality during the study showed that the temperature was reched 27 0C and pH was 7, 65.


2017 ◽  
Vol 18 (2) ◽  
pp. 65
Author(s):  
Mohamad Zaenal Mahfud ◽  
Sudarmadji Sudarmadji ◽  
Wachju Subchan

The mangrove forest are natural and renewable. resources Mangrove has the physical, chemicaland biological function which highly support the fulfillment of human needs and serve as a bufferbalance of the ecosystem in coastal areas. One of the functions associated with the mangrovebiological existence as a source of diversity of marine life. Marine life is affected by the presenceof mangrove forests among mangrove crab (Scylla serrata) to maintain the ecological balance andcause the energy cycle running fast. This study aims to determine the condition of environmentalfactors, the relative fitness and spatial distribution of mangrove crabin the mangrove forests BlockBedul Kali Segoro Alas Purwo National Park. Data from the study are described and classified bysimilarity of environmental factors, then performed multiple linear regression betweenenvironmental factors with relative fitness and spatial distribution of mangrove crabs. The resultsshowed that the average relative fitness mangrove crabs at all the research station is 69 with astandard deviation of 13.51. Spatial distribution of mangrove crab at any observation station isless than 1, so it can be concluded that the distribution is uniform. Environmental factors withrelative fitness mud crab significant correlation, but no significant correlation betweenenvironmental factors with the spatial distribution of mangrove crabs. Keywords: Relative Fitnes Crab Mangrove, Mangrove Crab Spatial Distribution, Alas Purwo National Park


2017 ◽  
Vol 1 (2) ◽  
pp. 113-120
Author(s):  
Ratih Permana Sari ◽  
Molani Paulina Hasibuan

Abstrak. Besarnya potensi alam yang dimiliki oleh Kota Langsa yaitu tumbuhan mangrove dikembangkan yang nantinya dapat digunakan dalam bidang kesehatan khususnya untuk pencarian bahan baku obat-obatan seperti obat antimikroba. Selain tumbuhannya, ketersediaan makanan laut seperti kepiting bakau juga merupakan salah satu potensi lokal yang banyak diminati oleh masyarakat setempat. Namun masyarakat harus berhati-hati dalam mengkonsumsi kepiting bakau karena ada kepiting bakau yang mengandung mikroorganisme atau bakteri berbahaya yang dapat merusak kesehatan manusia baik dalam jangka pendek maupun panjang. Penelitian ini bertujuan untuk mengkaji potensi mangrove sebagai antimikroba dan mengetahui komponen bioaktif yang terdapat pada mangrove dalam mengatasi penyakit pada kepiting bakau. Pengumpulan data dilakukan dengan pengambilan sampel biji mangrove Avicennia marina dilakukan  pada Desa Kuala Langsa.  Sampel mangrove yang diambil adalah biji yang tua dan kondisinya utuh, sampel kemudian dimasukkan dalam kantong sampel ditimbang hingga beratnya 1 kg. Hasil data uji skrining fitokimia diketahui kandungan senyawa biokatif dan jenis senyawa bioaktif yang terdapat di dalam ekstraksi biji mangrove adalah triterpenenoid, tanin, fenol dan alkaloid. Pengujian daya hambat ekstrak metanol dan n-heksan biji A. marina dilakukan dengan metode difusi agar. Pada beberapa pengulangan ekstrak pelarut metanol dan n-heksan sampel biji mangrove didapatkan zona bening rata-rata 3,13 mm dan 3,03 mm dari kontrol positifnya. Hasil gejala klinis pada kepiting bakau pasca perendaman ekstrak biji tumbuhan mangrove terlihat adanya perubahan seperti mengecilnya melanosis pada karapas, memudarnya kaki renang yang memerah, dan warna karapas mulai kehijauan.Kata Kunci: antimikroba, biji mangrove, kepiting bakau Abstrak. The amount of natural potency possessed by Langsa City is developed mangrove plant which later can be used in health field especially to search for raw material of medicines like antimicrobial drug. In addition to the plants, the availability of seafood such as mangrove crab is also one of the local potential that many in demand by the local community. But people should be careful in consuming mangrove crabs because there are crabs containing microorganisms or harmful bacteria that can damage human health both in the short and long term. This study aims to assess the potential of mangrove as an antimicrobial and to know the bioactive components contained in mangrove in overcoming the disease in mangrove crab. The data was collected by sampling of mangrove seeds conducted in Kuala Langsa Village. The mangrove samples taken were old mangrove seeds and the condition was intact, the sample then put in a sample bag weighed up to weighing 1 kg. The result of phytochemical screening data data of biochemical compound and bioactive compound type found in mangrove seed extraction of Avicennia marina are triterpenenoid, tannin, phenol and alkaloid. Testing of inhibitory power of methanol and n-hexane extract of A. marina seeds was done by agar diffusion method. In some repeat extracts of methanol and n-hexane solvent samples of mangrove seeds obtained an average clear zone of 3.13 mm and 3.03 mm of positive control. Furthermore, the results of clinical symptoms in mangrove crabs after soaking seed extracts visible changes such as decreased melanosis in the carapace, the waning of the swimming pool is red, and the color of the carapace begins to greenish.Keywords: Antimicrobial, mangrove plant seed, mangrove crab


2016 ◽  
Vol 15 (2) ◽  
pp. 171 ◽  
Author(s):  
Yuni Puji Hastuti ◽  
Horas Nadeak ◽  
Ridwan Affandi ◽  
Kurnia Faturrohman

<p class="NoParagraphStyle"><strong>ABSTRACT</strong><strong></strong></p><p class="NoParagraphStyle"> </p><p class="NoParagraphStyle">One of the abiotic factors that affects the growth and the survival of crabs is pH. The optimum pH media will give maximum impact on mangrove crabs because it is related with the osmoregulation process. This study aimed to examine the effect of pH on the survival rate (SR) and specific growth rate (SGR) of mangrove crab <em>Scylla serrata</em> through the reaction of physiological condition. This study consisted of the treatments with the pH medium 5 (A), pH medium 6 (B), pH medium 7 (C), and pH medium 8 (D).  The crab’s maintenance in different pH gave a significant effect (P&lt;0.05) on the survival rate of the crabs. The pH treatments also gave a significant effect (P&lt;0.05) on the SGR of the crabs. The low level of crab stress at pH 7 was described by  the total value of high hemocyte and the high osmotic load so that the pH 7 was the optimum condition for the crabs.</p><p class="NoParagraphStyle"> </p><p class="NoParagraphStyle">Keywords: pH, survival, specific growth rate, mangrove crabs</p><p class="NoParagraphStyle"> </p><p class="NoParagraphStyle"> </p><p class="NoParagraphStyle"><strong>ABSTRAK</strong><strong></strong></p><p class="NoParagraphStyle"> </p><p class="NoParagraphStyle">Salah satu faktor abiotik yang mempengaruhi pertumbuhan dan kelangsungan hidup kepiting adalah pH. Media pH optimum akan memberikan dampak maksimum pada kepiting bakau karena terkait dengan proses osmoregulasi. Penelitian ini bertujuan untuk menguji pengaruh pH pada tingkat kelangsungan hidup (SR) dan laju pertumbuhan spesifik (SGR) kepiting mangrove <em>Scylla serrata</em> melalui reaksi kondisi fisiologis. Penelitian ini terdiri atas perlakuan dengan media pH 5 (A), sedang pH 6 (B), sedang pH 7 (C), dan menengah pH 8 (D). Pemeliharaan kepiting di pH yang berbeda memberikan pengaruh yang signifikan (P&lt;0,05) pada tingkat kelangsungan hidup kepiting. Perlakuan pH juga memberikan efek yang signifikan (P&lt;0,05) pada SGR dari kepiting. Rendahnya tingkat stres kepiting pada pH 7 digambarkan oleh nilai total hemosit tinggi dan beban osmotik tinggi sehingga pH 7 adalah kondisi optimum untuk kepiting.</p><p class="NoParagraphStyle"> </p><p>Kata kunci: pH, kelangsungan hidup, laju pertumbuhan spesifik, kepiting mangrove</p>


2016 ◽  
Vol 16 (2) ◽  
pp. 63
Author(s):  
Rina Sugiarti Dwi Gita ◽  
Sudarmadji Sudarmadji ◽  
Joko Waluyo

The purpose of this study was to determine the diversity, abundance and abiotic factors influence the diversity and abundance of mud crab (Scylla spp.) In mangrove forests Blok Bedul Alas Purwo National Park. This research method uses descriptive quantitative method. Diversity is calculated by using the formula of Shannon Wiener, mangrove crab abundance is calculated using the formula abundance Kreb whereas the method of analysis using simple linear regression. The data used in this research is data such as the number and type of biotic mud crabs and data abiotic form of measurement of temperature, pH, salinity, substrate type, and the tide. This study shows the results include mangrove crab species diversity index of every observation stations in the mangrove forests Blok Bedul Alas Purwo National Park is H '= 0.315 showing that the level of diversity in every station is low. The abundance of mud crabs in the mangrove forests Blok Bedul Alas Purwo National Park is 0.0011 individuals / m² which showed that the level of abundance at relatively low research station. Results of the analysis of the influence of abiotic factors on the diversity and abundance of mud crabs in mangrove forests Blok Bedul National Park Alas Purwo not significant (p> 0.05) the diversity and abundance of mangrove crab.   Keywords : abiotic factors , abundance , diversity , mud crab , regression


2018 ◽  
Vol 7 (2) ◽  
pp. 120-127
Author(s):  
Busori Sunaryo ◽  
Reta Yudistyana ◽  
Akhmad Taufiq Firaldy

Mangrove forest is one of the resources that has important functions and roles in a single ecosystem. The utilization of mangrove forest also has a fairly high economic value. The existence of mangrove forest has several functions such as a media for mangrove crab cultivation, mangrove cultivation, diversification of mangrove products and mangrove tourism. Some of these benefits were introduced by CSR of Badak LNG program to society around the mangrove forest in Bontang City for the economic improvement of coastal communities by exploiting the existing mangrove potential. Thus, the aim of this study is to calculate the economic value of the utilization of mangrove forest. The research method used is quantitative method by using benefit cost analysis. In brief, the results showed that the utilization of mangrove resources conducted by the community or local community groups such as mangrove crab cultivation, mangrove seedling, mangrove dodol, mangrove syrup and mangrove tourism. The highest direct benefits of mangrove area came from mangrove seedlings (71%), mangrove dodol (9.76%), mangrove tourism (6.82%), mangrove crab (6.47%) and mangrove syrup (5.96 %). Meanwhile the value of choice for mangrove area is 30 Ha. From the calculation results, the benefit obtained of mangrove forest selection was Rp 6.087.150,00 per year. Based on the mentioned value, it indicated that the respondents were willing to pay for the existence of mangrove forest ranging from Rp 50.000,00 – Rp 750.000,00. The total existence value of mangrove forest was Rp 4.375.000,00 for 50 respondents and the total value of existence per year was Rp 52,500,000.00. The total benefit of mangrove forest was Rp 4,749,322,671,00 per year. As the result, the 87% indirect benefit is the largest contributor to the benefits of mangrove forests in South Bontang District. While the second largest contributor is a direct benefit of 12%.


Author(s):  
Wa Mega Wally ◽  
M Nur Matdoan ◽  
Ine Arini

Background: Mangrove forests are coastal ecosystems that usually grow along beaches or river mouths and are strongly influenced by tides. Mangrove crab (Scylla sp) is one of the important fisheries commodities in Indonesia. Mangrove crabs are very prospective as foodstuffs because they have an important nutritional value for the body, with 47.5% protein content and 11.20% fat. The intertidal zone of Wael hamlet is a coastal area located between the highest tides and lowest low tides. This area is a transition from ocean conditions to land conditions. Method: This research uses descriptive research type, which is to express information descriptively about diversity and species distribution patterns. Results: This study shows that mangrove crabs found in the mangrove forest area were 2 species, namely 7 species of Scylla sp and 5 species of Scylla oceanica. Conclusion: This study shows that the diversity level of crabs is low while the distribution pattern of mangrove crabs is said to be clustered.


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