scholarly journals Incorporating the Ecological, Socio-economic and Institutional Conceptual Model Framework for Sustainable Management of Small-scale Mud Crab (Scylla serrata) Fishery in Western Seram Regency, Indonesia

2021 ◽  
Vol 19 (3) ◽  
pp. 207-219
Author(s):  
Yuliana Natan ◽  
◽  
Johannes M.S. Tetelepta ◽  
Jesaja A. Pattikawa ◽  
Ong T.S. Ongkers ◽  
...  
Keyword(s):  
Conceptual Model ◽  
Sustainable Management ◽  
Economic Value ◽  
State Level ◽  
Scylla Serrata ◽  
Small Scale ◽  
Consumer Attitude ◽  
Mud Crab ◽  
Model Framework ◽  
Management Actions

Mud crab Scylla serrata of Kotania Bay and Pelita Jaya Bay of Western Seram District, has been harvested by local fishermen for more than 25 years. The mud crab has high economic value, and there is always a market for this fishery. The economic dependence of the fishermen forces them to harvest this resource extensively. No existing management strategy and extensive exploitation leads to unsustainable conditions of this fishery. With inadequate data condition, the Driver-Pressure-State-Impact-Response (DPSIR) model constructs an ecological, social-economy, and institutional conceptual model framework for sustainable management of this fishery. The driving force (D) in this fishery comes from the local fishers harvesting the mud crab. The two most sensitive attributes that affected mud crab sustainability from Rapfish analysis were used as state-level of DPSIR methodology. The result shows that the most sensitive variables from ecological, socio-economy, and institution were: caught before maturity, mud crab size, consumer attitude towards sustainability, just management, government quality, and monitoring and reporting, respectively. It was concluded that this conceptual model allows a better understanding of how the mud crab S. serrata system works and management actions taken at different system components. This conceptual model framework can be a useful tool to incorporate the participation of stakeholders, managers, and scientists in the process of a sustainable management plan.

scholarly journals Kajian Struktur Ukuran Dan Parametr Populasi Kepiting Bakau (Scylla serrata) di Ekosistem Mangrove Teluk Bintan, Kepulauan Riau

2015 ◽  
Vol 15 (2) ◽  
Author(s):  
M. Tahmid, Achmad Fahrudin Dan Yusli Wardiatno
Keyword(s):  
Growth Parameters ◽  
Economic Value ◽  
Data Retrieval ◽  
Fishing Effort ◽  
Scylla Serrata ◽  
Small Scale ◽  
Natural Mortality ◽  
Mud Crab ◽  
Mangrove Crab ◽  
The Status

ABSTRAKKepiting bakau (Scylla serrata) merupakan salah satu potensi komoditas perikanan skala kecilyang memiliki nilai ekonomi tinggi. Kelimpahan populasi dipengaruhi oleh upaya penangkapan dankondisi ekosistem mangrove sebagai habitat utamanya. Produksi kepiting bakau di Teluk Bintanmenurun dan penyebabnya belum diketahui dengan pasti. Oleh karena itu, perlu dilakukan kajiantentang biologi kepiting bakau di Teluk Bintan. Penelitian ini bertujuan untuk mengkaji statuspopulasi kepiting bakau yang meliputi struktur ukuran, parameter pertumbuhan dan laju mortalitasdan eksploitasi. Pengambilan data kepiting bakau dilakukan dengan pendekatan yaitu fisher-basedsurvey. Hasil penelitian menunjukkan ukuran kepiting bakau yang tertangkap mulai dari lebar karapas(CW) 64-172 mm, ukuran fase muda kepiting jantan yang tertangkap mencapai 46,62% dan betinamencapai 48,06%, keduanya hampir setengah dari tangkapan total, ini menunjukkan bahwa alattangkap yang digunakan belum selektif. CW∞ jantan mencapai 176,93 mm lebih tinggi dari kepitingbetina sebesar 169,58 mm, namun sebaliknya nilai koefesien K jantan (0,360) lebih kecil dari betina(0,390), sehingga pertumbuhan kepiting bakau betina lebih cepat dari jantan. Perkiraan angkakematian alami (M) jantan = 0,5566 dan kematian akibat penangkapan (F) jantan = 0,6434 sedangkanM betina = 0,59 dan F betina = 0,41. Laju eksploitasi (E) kepiting jantan mencapai 53,62%, ini dapatdikatakan telah terjadi lebih tangkap atau over eksploitasi.Kata kunci: Scylla serrata, parameter pertumbuhan, struktur ukuran, mangrove and Teluk BintanABSTRACTMud crab (Scylla serrata) is one of the potential of small-scale fishery commodities that havehigh economic value. The abundance of the population is affected by the fishing effort and conditionsmangrove ecosystem as its main habitat. Mud crab production in the Gulf of Bintan declined and thecause is not known with certainty. Therefore, it is necessary to study on the biology of mud crab in theGulf of Bintan. This study aims to assess the status of mangrove crab population that includes the sizestructure, parameters of growth and the rate of mortality and exploitation. Data retrieval is done witha mangrove crab fisher-based survey. The results showed that the size of mud crab caught fromcarapace width (CW) 64-172 mm, the size of the young phase male crabs caught females reached46.62% and reached 48.06%, both are almost half of the total catch, it indicates that fishing gearused is not selective. CW∞ males reach 176.93 mm higher than the female crabs of 169.58 mm, butinstead value koefesien K males (0.360) is smaller than females (0.390), so that the growth of femalemud crabs faster than males. Estimated natural mortality rates (M) male = 0.5566 and deaths fromarrest (F) male = 0.6434 while M females female F = 0.59 and = 0.41. The rate of exploitation (E)male crabs reached 53.62%, can be said to have occurred over fishing or over-exploitation.Keywords: Scylla serrata, growth parameters, structure size, mangrove and bay Bintan

scholarly journals Distribusi Scylla spp. di perairan estuari Sungai Donan Segara Anakan Bagian Timur, Cilacap

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Sulistiono Sulistiono ◽  
Nurul Musyariafah Yahya ◽  
Etty Riani
Keyword(s):  
Economic Value ◽  
Scylla Serrata ◽  
Mangrove Forests ◽  
Mud Crab ◽  
Mangrove Species ◽  
Central Java ◽  
Rhizophora Apiculata ◽  
Mangrove Ecosystems ◽  
Avicennia Alba ◽  
Mangrove Crabs

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.

scholarly journals Kajian Struktur Ukuran Dan Parametr Populasi Kepiting Bakau (Scylla serrata) di Ekosistem Mangrove Teluk Bintan, Kepulauan Riau

2017 ◽  
Vol 15 (2) ◽  
Author(s):  
M. Tahmid, Achmad Fahrudin Dan Yusli Wardiatno
Keyword(s):  
Size Structure ◽  
Growth Parameters ◽  
Carapace Width ◽  
Data Retrieval ◽  
Mangrove Ecosystem ◽  
Fishing Effort ◽  
Scylla Serrata ◽  
Small Scale ◽  
Mud Crab ◽  
Mangrove Crab

ABSTRAKKepiting bakau (Scylla serrata) merupakan salah satu potensi komoditas perikanan skala kecil yang memiliki nilai ekonomi tinggi. Kelimpahan populasi dipengaruhi oleh upaya penangkapan dan kondisi ekosistem mangrove sebagai habitat utamanya. Produksi kepiting bakau di Teluk Bintan menurun dan penyebabnya belum diketahui dengan pasti. Oleh karena itu, perlu dilakukan kajian tentang biologi kepiting bakau di Teluk Bintan. Penelitian ini bertujuan untuk mengkaji status populasi kepiting bakau yang meliputi struktur ukuran, parameter pertumbuhan dan laju mortalitas dan eksploitasi. Pengambilan data kepiting bakau dilakukan dengan pendekatan yaitu fisher-based survey. Hasil penelitian menunjukkan ukuran kepiting bakau yang tertangkap mulai dari lebar karapas (CW) 64-172 mm, ukuran fase muda kepiting jantan yang tertangkap mencapai 46,62% dan betina mencapai 48,06%, keduanya hampir setengah dari tangkapan total, ini menunjukkan bahwa alat tangkap yang digunakan belum selektif. CW∞ jantan mencapai 176,93 mm lebih tinggi dari kepiting betina sebesar 169,58 mm, namun sebaliknya nilai koefesien K jantan (0,360) lebih kecil dari betina (0,390), sehingga pertumbuhan kepiting bakau betina lebih cepat dari jantan. Perkiraan angka kematian alami (M) jantan = 0,5566 dan kematian akibat penangkapan (F) jantan = 0,6434 sedangkan M betina = 0,59 dan F betina = 0,41. Laju eksploitasi (E) kepiting jantan mencapai 53,62%, ini dapat dikatakan telah terjadi lebih tangkap atau over eksploitasi. Kata kunci: Scylla serrata, parameter pertumbuhan, struktur ukuran, mangrove and Teluk Bintan ABSTRACTMud crab (Scylla serrata) is one of the potential of small-scale fishery commodities that have high economic value. The abundance of the population is affected by the fishing effort and conditions mangrove ecosystem as its main habitat. Mud crab production in the Gulf of Bintan declined and the cause is not known with certainty. Therefore, it is necessary to study on the biology of mud crab in the Gulf of Bintan. This study aims to assess the status of mangrove crab population that includes the size structure, parameters of growth and the rate of mortality and exploitation. Data retrieval is done with a mangrove crab fisher-based survey. The results showed that the size of mud crab caught from carapace width (CW) 64-172 mm, the size of the young phase male crabs caught females reached 46.62% and reached 48.06%, both are almost half of the total catch, it indicates that fishing gear used is not selective. CW∞ males reach 176.93 mm higher than the female crabs of 169.58 mm, but instead value koefesien K males (0.360) is smaller than females (0.390), so that the growth of female mud crabs faster than males. Estimated natural mortality rates (M) male = 0.5566 and deaths from arrest (F) male = 0.6434 while M females female F = 0.59 and = 0.41. The rate of exploitation (E) male crabs reached 53.62%, can be said to have occurred over fishing or over-exploitation. Keywords: Scylla serrata, growth parameters, structure size, mangrove and bay Bintan

scholarly journals Pengaruh ablasi mata terhadap kecepatan kematangan gonad kepiting bakau (Sylla serrata) betina

2014 ◽  
Vol 1 (1) ◽  
pp. 14
Author(s):  
Muhammad Robi ◽  
Erlangga Erlangga
Keyword(s):  
Survival Rate ◽  
Economic Value ◽  
Gonadal Development ◽  
Scylla Serrata ◽  
Mud Crab ◽  
Average Value ◽  
Gonadal Maturity ◽  
Mangrove Crab ◽  
Randomized Design ◽  
Completely Randomized Design

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.

scholarly journals HABITAT QUALITY MUD CRAB (Scylla serrata) IN MANGROVE ECOSYSTEM OF BINTAN BAY, BINTAN DISTRIC, RIAU ISLANDS

2016 ◽  
Vol 7 (2) ◽  
Author(s):  
M. Tahmid ◽  
Achmad Fahrudin ◽  
Yusli Wardiatno
Keyword(s):  
Body Weight ◽  
Data Collection ◽  
Habitat Quality ◽  
Carapace Width ◽  
Mangrove Ecosystem ◽  
The Body ◽  
Scylla Serrata ◽  
Small Scale ◽  
Mud Crab ◽  
Index Value

Mud crab (Scylla serrata) is one of small scale fisheries commodity that have high economic value and typically associated with good mangrove ecosystem. A habitat degradation will cause a serious impact on the existence of mud crab population. The puropse of this study was to assess the ecological quality of mud crab habitat condition on Bintan Bay’s mangrove ecosystem. Ecological data collection was conducted by using plots line transect for mangrove and the mud carb data collection by using fishermen catch (fisher based survey). The results showed the value of habitat quality index (HQI) of mud crab (Scylla serrata) ranged from 52-82 which mean in the “moderate” category (index value 43-66) and "good" (index value 67-90). It showed that Bintan Bay’s mangrove ecosystems was good enough to support the viability of mud crab. Habitat quality had a linier impact on body weight gain (R2 = 99.78%) and carapace width (R2= 99.21%). This showed that higher the index value of habitat quality, the size of the body weight and carapace width will increases. Keywords: Scylla serrata, habitat quality, ecology, mangroves, and Bintan Bay

Social and economic implications of small-scale mud crab (Scylla serrata) aquaculture: the case of organised community groups

2014 ◽  
Vol 22 (4) ◽  
pp. 1499-1514 ◽  
Author(s):  
David Oersted Mirera ◽  
Jacob Ochiewo ◽  
Fridah Munyi
Keyword(s):  
Scylla Serrata ◽  
Small Scale ◽  
Mud Crab ◽  
Community Groups ◽  
Economic Implications

scholarly journals Fishery of mud crab Scylla serrata of Kotania Bay, Western Seram District: potency, stock status and sustainable management

2019 ◽  
Vol 339 ◽  
pp. 012002
Author(s):  
J M S Tetelepta ◽  
Y Natan ◽  
J A Pattikawa ◽  
O T S Ongkers ◽  
B J Pattiasina
Keyword(s):  
Sustainable Management ◽  
Scylla Serrata ◽  
Mud Crab ◽  
Stock Status

scholarly journals Pertumbuhan Kepiting Bakau (Scylla serrata Forsskål, 1775) dengan Ukuran Pakan Berbeda pada Budidaya dengan Sistem Baterai

2015 ◽  
Vol 18 (1) ◽  
Author(s):  
Ali Djunaedi ◽  
Sunaryo Sunaryo ◽  
Bagus Pitra Aditya
Keyword(s):  
Economic Value ◽  
Scylla Serrata ◽  
Mud Crab ◽  
Feed Conversion ◽  
Pellet Size ◽  
Fisheries Resources ◽  
Production Factors ◽  
Randomized Design ◽  
Experimental Laboratory ◽  
Completely Randomized Design

Kepiting bakau (S. serrata Forsskål, 1775) merupakan salah satu sumber daya perikanan bernilai ekonomis tinggi dan potensial untuk dibudidayakan. Pakan adalah faktor produksi yang penting dalam budidaya kepiting bakau. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh pemberian pelet yang berbeda ukuran bagi pertumbuhan kepiting bakau (S. serrata Forsskål, 1775). Metode penelitian ini menggunakkan Rancangan Acak Lengkap (RAL) dengan 3 perlakuan dan 10 kali ulangan pada masing-masing perlakuan, yaitu: perlakuan A (diameter pelet + 10 mm), perlakuan B (diameter pelet + 5 mm) dan perlakuan C (diameter pelet + 1 mm). Data laju pertumbuhan spesifik (SGR) dianalisis dengan Anova. Hasil penelitian menunjukkan bahwa perlakuan pemberian pelet yang berbeda ukuran berpengaruh sangat nyata (p<0,01) terhadap Laju Pertumbuhan Spesifik (SGR), Rasio Konversi Pakan (FCR) dan Rasio Efisiensi Protein (PER). Hal tersebut menunjukkan bahwa ukuran pellet sangat menentukan pertumbuhan Kepiting Bakau (S. serrata Forsskål, 1775).Kata Kunci : Ukuran Pelet, Kepiting Bakau (S. serrata Forsskål, 1775), Laju Pertumbuhan Spesifik (SGR) Mud crab (S. serrata Forsskål, 1775) is one of the fisheries resources that has high economic value and potential to be cultivated. Feed is one of important production factors on the mud crab farming. The purpose of this study is investigated the effect of different sizes pellets on the growth of mud crab (S. serrata Forsskål, 1775). The research method in this study was used experimental laboratory with completely randomized design (CRD) with 3 treatments and 10 replications in each treatment. Specific growthrate (SGR) data was analyzed with anova. These results indicate that administration of treatment different size pellets effect is very significant (p<0,01) on Specifik Growthrate (SGR), Feed Conversion Ratio (FCR) and Protein Efiecient Ratio (PER). Its that suggest that pellet size affect on the growthrate of the mud crab (S. serrata Forsskål, 1775).Keywords: Pellet Size, Mud crab (S. serrata Forsskål, 1775), Specific growth rate (SGR)

scholarly journals SUSTAINABLE MANAGEMENT STRATEGY FOR MANGROVE FOREST OF PELITA JAYA BAY AND KOTANIA BAY, WESTERN SERAM, INDONESIA

2020 ◽  
Vol 16 (2) ◽  
pp. 53-67
Author(s):  
Johannes M.S. Tetelepta ◽  
Sven Loupatty ◽  
Mintje Wawo
Keyword(s):  
Conceptual Model ◽  
Sustainable Management ◽  
Mangrove Forest ◽  
Management Strategy ◽  
Local Community ◽  
Mangrove Ecosystem ◽  
Management Approach ◽  
Mangrove Forests ◽  
Model Framework ◽  
Forest Sustainability

The coastal area of Pelita Jaya Bay and Kotania Bay is a semi enclose estuary area having three typical most productive ecosystems i.e. mangrove, seagrasses, and coral reefs with the mangrove ecosystem being the dominant one making this area a productive in fish resources. Local community neighboring this area used mangrove ecosystem for many different purposes, some of it threatening the sustainability oh the ecosystem. The objective of this study was to analyze mangrove forest sustainability and to propose sustainable mangrove forest management. Rapfish analysis was used to analyze mangrove sustainability status. A sustainable management strategy was developed using a conceptual model framework combined with the DPSIR approach. The two most sensitive attributes affecting mangrove sustainability from Leverage analysis were used as the State component from DPSIR. The result shows that overall mangrove forest sustainability was 60% and was considered fair sustain with the ecological dimension having the highest sustainable scale (85.35%) and considered sustain, whilst institutional dimension having the lowest sustainable scale (29.10%) and considered unsustain. The sustainable mangrove management strategy proposed consists of workshops, training, vocational education concerning EAM, as well as replanting degraded mangrove forests, monitoring, surveying, and controlling. The management strategy should be conducted based on a co-management approach.   Keywords:  Mangrove forest, local community, sustainability, conceptual model framework, Kotania Bay

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