This research performed to determine length-weight and width-weight relationship of spiny rock crab (Thalamita crenata) caught at Panjang Island. The total number (1,368 crabs) used as sample consists of 838 males and 530 females. Carapace length has significant correlation with weight, where r2 for males and females are 82.36% and 71.50% respectively. The correlation of length-weight and widthweight relationship at males is higher than females because many crabs still at maturity stage. The ovarian stage will affect to total mass tremendously. T-student analysis that shows growth pattern for males is isometric and negative allometric for females, with b value of males 3.0278 and females 2.729. It also means the male crabs are heavier than the females.
Measurement of the main dimensions of the vessel is very important to analyze the value at L/B, L/D and B/D which can affect to the strength, speed and stability. The limited information and data regarding the size at purse seine boats in Lempasing fishing port can be an obstacle in the development of fishing activities. This research aims to describe and to analyze the characteristics, ratios and analyze the relationship between the ratio of the main dimensions of purse seine vessels with engine power and purse seine nets that used in PPP Lempasing. The research was conducted in February 2015-March 2016 at coastal fishing port of Lempasing. The method was used census and analyzed by descriptive comparative. The results show the range of the main dimensions from 9.31 to 18.50 meters of LOA, Bmax from 3.72 to 6,05 meters and Depth (D) from 0.82 to 1.75 meters. The ratio of the main dimensions have a range 2.13 to 3.81 of L/B, the value of L/D from 7.69 to 13.46 and the B/D from 2.91 to 4.62. The ratio of purse seine has not been used in determining the engine power and the size of fishing gear. The ratio of main dimension does not have a tendency relationship to engine power and fishing gear because fishermen have not considered it.
Kronjo Sub-district was established to be one of the main areas of Tangerang Regency Minapolitan. Minapolitan area is a development concept based on economic management of the region with the motor of marine and fisheries sector, based on the principle of integration, efficiency, quality and acceleration. The purpose of this study was to identify the condition and to analyze the level of facility utilization of Kronjo Fishing Port. This research was conducted in July-November 2017. The method used in this research is survey. The depth of the harbor pool, the need for clean water, the need for ice beams, and the fishing port area of Kronjo Fishing Port has exceeded its capacity, with the level of facility utilization 223,33%, 2.111,09%, 702%, 200%-400%. Where the depth of the harbor pool is3.5 m and it is only available 2 m and has a shallowing to 1.85 m. Clean water available in Kronjo Fishing Port is only 550 L/day while the need for clean water is 11,611 L/day, needs of ice beam 70.2 tons and available in Kronjo Fishing Port only 10 tons. The total area of facilities of Kronjo Fishing Port 681.8 m 2 and the minimum land area of Kronjo Fishing Port required is 1,363.6 m 2 and the maximum land area required is 2,727.2 m 2 .
Squid is one of the catches of fisheries favored by the community and one of the fisheries commodities with high economic value. In 2017 the squid production in the Karangantu archipelago fisheries port reached 328 tons or 14.3% of the total capture fisheries production, which reached 2,293 tons. All Squid that enters the market come entirely from catches in nature (sea); if you only rely on the effort of catching it alone, one day, there may be overfishing. This study aimed to determine the optimal level of Squid (Loligo sp.) Resource management is based on biological and economic aspects in the Karangantu PPN. The study was conducted from April to May 2019. Retrieval of primary data and secondary data funds. The research procedure consisted of calculating CPUE (Catch Per Unit Effort), MSY (Maximum Sustainable Yield), and MEY (Maximum Economic Yield) using primary data and secondary data obtained from Karangantu. The calculation of bioeconomic analysis using the Gordon-Schaefer model showed that the highest profit value was in the MEY condition of 234,423 kg/year and 2,622 trips/year with a gain of Rp. 2,901,811,197. Based on the Fox model, the utilization rate of Squid (Loligo sp.) It is 129% and is in the status of over exploited.
Karimunjawa National Park (KNP) inhabited mostly by fisherman. Its area surrounds by 111.625 ha as waters. Fishing zone is dedicated for traditional fisheries. Therefore the capture fisheries in KNP should be adjusted to ccommodate conservancy and utilization objectives. The objective of the research is to design management model of reef fisheries in KNP. Selection of leading fish product was conducted by implementing comparative performance index. Potency of reef fish resources was performed by using bio-economic model. Optimization number of fishing gear is performed by using LGP. Feasibility study for fishery business was conducted with R/C, ROI, PP, NPV, B/C, and IRR criteria. Policy and institutional for capture fisheries was conducted by using institutional analysis. The result shows the leading fish from reef fish is jack trevallies and yellow tail; reef fish potency is 174.225,68 kg/year; the fishing technology for reef fish are hand line (1.412 units) and traps (102 units); hand line, fish trap, and muroami are competent to develop continuously in KNP area; the policy of reef fisheries need to coordinate between stakeholders and institutions to gain optimal management; the institutional that involve in management are fishermen group, BTNKJ, DKP, NGO, fisherman’s business group, and educational institutions.
The increasing population and rising living standards are expected to contribute to higher demand for animal-derived high-quality protein, primarily from fish.Capture fisheries have become a leading sector that supplies fish production for human consumption and fish processing industries.As the center of fish production from capture fisheries, the fishing port is vital to maintaining the supply and distribution of fish.The utilization of low-economic fish is generally consumed by local people and processed into salted fish.At the same time, it can become fresh material in the fish processing industry to increase its added value.The papers discuss the opportunity to utilize low-economic fish in fishing ports through the development fish processing industry based on fish production and each product's economic value.The potential amount of fish product was estimated based on application in the field and referred to previous research.The economic value is calculated based on market price.The production of low-economic fish in Karangantu reached 3,091 tons, with an average annual production of 2791 tons.The processing of low-economic fish into surimi, gelatin, and derivative products will increase the added value if it is only sold fresh for IDR 13.96 billion.The highest added value is obtained from fish meatballs at IDR 60.29 billion.The added value from surimi is IDR 46.89 billion.Low-economic fish processing can increase added value, create new jobs, and grow the fishery's economic activity at the fishing port.
Bottom gillnet was classified into static fishing gear that require high stability. The main dimensions of the ship are very important in the manufacture of fishing boats. The main dimensions of the ship ratio (L/B, L/D and B/D) greatly affects to the stability, strength and speed. The lack of availability of information and data collection on the main dimensions can be an obstacle in the development of fishing activities. The experiment was conducted in April-October 2014 in Karangantu Archipelagic fshing port Serang city Banten Province. The results showed the main dimensions of the ships have range of LOA= 6.76-13.43 m, Bmax= 1.50-3.00 m and D= 0.27-1.04 m. The main dimension of ratio the ships have range of L/B is 2.60-6.67; L/D is 8.65-28.15 and B/D is 1.50-8.15. The engine powers that are widely used is 16 and 24 PK. The fishermen did not use the main dimensions ratio to determine the length of bottom gillnet and engine power. Keyword: bottom gillne, main dimensions, ratio, ship
Swimming crab is one of an economic fisheries commodity in Banten Province. One of the fishing gear to catch swimming crabs is collapsible trap. The objective of this study is to analyze the effectiveness of escape gap on collapsible traps for catching swimming crab in Banten Bay. This research uses experimental fishing. The escape gap have 4 cm in length and 3 cm in width to release the swimming crabs with carapace width < 10 cm. This research was conducted in January-February 2015 in Banten Bay. The total 84 swimming crab consist of 40 males and 44 females. With total weight 15,556 g. The carapace width distribution in this study ranged from 6,5 to 14,1 cm. The application of escaping gap have high effectiveness to catch the legal size of swimming crab with proportion 84%.
The purpose of this research are to determine the average distribution of SST, chlorophyll-a, and see surface currents, and analyze the relationship between them with pelagic fish catches as an analysis material for determining pelagic fishing area in Banten’s Southern Sea. Data collected includes SST and chlorophyll-a using Aqua MODIS images data and and see surface currents data from Copernicus Marine Data for 6 years. The data was processed to produce the value of each parameter and then analyzed the parameters with the catches and determine the potential pelagic fishing area. The results showed that the SST throughout 2016 had a relatively high value allegedly due to the negative Indian Ocean Dipole (IOD). During the eastern until the end of second transitional season in 2019 there was a positive IOD which caused SST to decrease and chlorophyll-a to be larger than in other fishing seasons. See surface currents in the western season tend to be larger than in other fishing seasons. SST and chlorophyll-a have a stronger relationship with catches than see surface currents. The potential fishing area are around Tanjung Mantiyung, Muara Binuangeun, dan Tanjung Panto.
