EEL (Anguilla bicolor bicolor) Rearing Techniques at the UPTD for Conservation and Supervision of Marine Fishery Resources of Sicincin, West Sumatra

Eel has a savory meaty taste and contains high levels of Eicosapentaenoic acid (EPA) and Docosahexaenoic acid (DHA). The purpose of this observation was to determine intensive rearing techniques for eel (Anguilla bicolor bicolor) at the UPTD KPSDKP for Conservation and Supervision of Marine Fishery Resources of Sicincin, West Sumatra. The preparations conducted for rearing the eel consist of providing seeds, pond preparation, water supply, feed management, water quality control, disease control, growth sampling, and harvesting eel for consumption size. The eel seeds were obtained from natural catches of glass eel in the Cimandiri river, Pelabuan Ratu, West Java. Preparation of the eel pond included cleaning the concrete pond, filling the water by observing the water input into the eel pond. The provision of water for eel rearing was obtained directly from the Kapalo Ilalang Sicincin irrigation channel to the holding tanks before flowing to the eel rearing pond. Feeding management was carried out 2 times a day, namely the percentages of feeding in the morning (35 %) and at night (55%) with a feeding rate of 3%-5%. The feed provided to these eels was in the form of a paste made of powdery pellets. Measurements of water quality for eel rearing during observations were temperature (27-29°C), pH (6-7), DO (5.9-7.8 ppm), salinity (3-4 ppt) and NH3 (0.02-0.07 mg/l). In our observations, parasites shaped like cotton were discovered, which attacked the eel body, causing death. In growth sampling, the measurement of the length and body weight of the eel once a month is necessary to be done.

A Study on Marine Fishery Resources of Andhra Pradesh: Ecological Aspects and Morphometrics of Common Marine Fishes of Visakhapatnam ‒ Protein Content and Bioaccumulation of Heavy Metals in Pomfret Fish Species

212 marine fishery resources were recorded in the waters of Andhra Pradesh State. Morphometric data was provided for 20 edible fishery resources landing at the fishing harbour of Visakhapatnam. The harbour area is polluted due to influx of various industrial effluents and domestic sewage. In Pampus argenteus, P. chinensis and Parastromateus niger, the total protein content is 16.24-19.58%. Further, arsenic concentration in muscle and gill portions individually or combined in all three of the species is highly negligible. Cadmium, mercury, and lead levels in the muscle and gills of these species are within or slightly above the recommended limits set by EU (2006) and FAO (2003), FAO/WHO (2011), MAFF, and FSSAI (2011) indicating that the consumption of these fishes is not harmful.

AIS and VBD Data Fusion for Marine Fishing Intensity Mapping and Analysis in the Northern Part of the South China Sea

For the sustainable development of marine fishery resources, it is essential to comprehensively, accurately, and objectively obtain the spatial characteristics and evolution law of fishing intensity. However, previous studies have focused more on the use of single data sources, such as AIS (Automatic Information System) and VBD (VIIRS boat detection), to obtain fishing intensity information and, as such, have encountered some problems, such as insufficient comprehensive data coverage for ships, non-uniform spatial distribution of data signal acquisition, and insufficient accuracy in obtaining fishing intensity information. The development of big data and remote sensing Earth observation technology has provided abundant data sources and technical support for the acquisition of fishing intensity data for marine fisheries. Based on this situation, this paper proposes a framework that integrates the data of fishing vessels from two sources (AIS, with high space-time granularity, and VBD, with short revisit cycle and high sensitivity), in order to obtain such information based on closely matching and fusing the vector point data of ship positions. With the help of this framework and the strategy of indirectly representing fishing intensity by data point density after fusion, the spatial characteristics and rules of fishing intensity in typical seasons (February, April, September, and November) in the northern South China Sea in 2018 were systematically analyzed and investigated. The results revealed the following: (1) Matching and fusing AIS and VBD data can provide a better perspective to produce robust and accurate marine fishery intensity data. The two types of data have a low proximity match rate (approximately 1.89% and 6.73% of their respective inputs) and the matching success for fishing vessels in the data was 49.42%. (2) Single AIS data can be used for nearshore (50 to 70 km) marine fishery analysis research, while VBD data reflect the objective marine fishing in space, showing obvious complementarity with AIS. (3) The fishing intensity grid data obtained from the integrated data show that high-intensity fishing in the study area was concentrated in the coastal area of Maoming City, Guangdong (0–50 km); the coastal area of Guangxi Beihai (10–70 km); around Hainan Island in Zhangzhou (10–30 km); and the Sanya nearshore area (0–50 km). However, it did not decay with increasing offshore distance, such as at the Trans-Vietnamese boundary in the Beibu Gulf, near the China–Vietnam Common Fisheries Area (50 km) and high-intensity fishing areas. (4) The obtained fishing intensity data (AIS, VBD, and AIS + VBD) were quantitatively analyzed, showing that the CV (Coefficient of Variation) of the average for each month (after fusing the two types of data) was 0.995, indicating that the distribution of the combined data was better than that before fusion (before fusion: AIS = 0.879, VBD = 1.642). Therefore, the integration of AIS and VBD can meet the need for a more effective, comprehensive, and accurate fishing intensity analysis in marine fishery resources.

Research on the Current Situation of Development and Utilization of Marine Fishery Resources

Since the reform and open-up, China’s marine fishery has developed rapidly, but it has also caused some practical contradictions. The focus is on the contradictions between overfishing and depleted fishery resources, and the continuous decline of marine fishery resources. The environmental destruction of marine resources and the sanitation and safety of marine aquatic products restrict the sustainable development of marine fisheries in the future. This article discusses the current situation of the development and utilization of marine fishery resources in China, and proposes some optimization measures for marine management in view of the current difficulties faced by marine fisheries.

Analysis of Ways to Strengthen the Management of Marine Fishery Resources in China in the New Period

This article mainly starts with the concept and basic characteristics of China’s marine fishery resources. On this basis, it analyzes the utilization status of China’s marine fishery resources and the problems existing in the management of marine fishery resources for discussion, and finally proposes effective ways to strengthen the management of marine fishery resources, aiming at providing help for the sustainable development of China’s marine fishery resources.

PENGELOLAAN SUMBERDAYA PERIKANAN DALAM KERANGKA UNDANG-UNDANG OTONOMI DAERAH

<p>The fishery and marine sector is one of the sectors that is expected to contribute to the recovery efforts of the Indonesian economy. However, marine and fishery<br />development as the main pillar of the national economy still requires the struggle and endless hard work of all its stakeholders. Regional autonomy requires the Region to participate and be responsible in the development process in its own region in the framework of realizing equitable development. This article concludes that Article 18 of Law no. 32 of 2004 became the basis of legal construction that designed the scenario of autonomous management of fishery resources in regions that have marine territory by giving authority to manage resources in marine areas. The lack of clarity on the regulation of autonomous authority over control of marine fisheries resources among regions has the potential to result in interpretations that are not in line with the law and the conflict between marine fishery resources between regions.</p>