Fishing Gear Technology Research Articles

BOMBO CAKALANG TEKNOLOGI PENANGKAPAN IKAN BOMBO CAKALANG DI PERAIRAN IWOIMENDAA KABUPATEN KOLAKA SULAWESI TENGGARA

“Bombo cakalang” is one type of traditional fishing gear used to catch skipjack in Iwoimendaa Water Kolaka Regency, Southeast Sulawesi. The contruction of “bombo cakalang” is the one net that floating on the surface water. The research objectives was to describe about the fishing gear technology of “bombo cakalang” related to contruction, the methode of fishing, and fishing ground of skipjack in Iwoimendaa Water Kolaka Regency. The research method use is a survey method by collecting the data on result of observation at the study site. Data analyze are using qualitative and quantitative descriptive. The results showed that (1) the contruction of “bombo cakalang” are composed of net with hanging ratio (E1) in 46,59% and E2 in 0,31%, net frame (float), line hauler, and barrier stake, buoyancy force (B) in 1,037 Kgf dan sinking force (S) in 0,303 Kgf; (2) the methode of fishing are trapping, tangling and deception; The fishing ground are the coastal Bone Bay, coordinates in 03°778’77”-03°791’44” Southern Latitude and 21°068’32” - 121°110’07” East Longtitude, sea surface temperature (SST) in 25°C - 28°C and the salinity in 31‰ - 33‰.
 
 Key word: “bombo cakalang”, Iwoimendaa, skipjack

Level of friendliness of the Bouke Ami fishing gear technology at the Nusantara Fishing Port (PPN) Kejawanan in Cirebon

Squid nets technology (Bouke Ami) are the most used fishing gear by fishermen in the Nusantara Fishing Port (PPN) Kejawanan. This research was conducted in April 2019. The purpose of this study was to analyse the level of friendliness of the bouke ami fishing gear based on the Responsible Fisheries Ethics Code (CCRF). The research method used survey and indepth interviews with related parties related to the results of research and the level of friendliness of environmental equipment. Data analysis was carried out in accordance with 9 criteria for environmentally friendly fishing gear from the Food and Agriculture Organization (FAO). The results of the study showed that 27 species of bouke ami were captured with a total catch of 1,939 tons. The composition of the main catch is greater, which is equal to 82.69% compared to 17.31% bycatch. The value in the bouke ami environment is 27. Based on this value, the bouke ami is classified as a fishing gear which is categorized as an environmentally friendly fishing gear.

KARAKTERISTIK TALI AGEL BERKITOSAN SEBAGAI BAHAN ALAT PENANGKAPAN IKAN

Agel ropes have lower mechanical properties (breaking strength and elongation) than synthetic fiber ropes. Chitosan coating is expected to improve the mechanical properties of agel ropes. The aims of this study are to investigate the effect of immersion in chitosan on the physical and mechanical properties of agel ropes, and to examine the breaking strength and elongation of coated agel ropes after being soaked in both freshwater and seawater. This experimental study was conducted at the Laboratory of Fishing Gear Technology, Department of Fisheries Resources Utilization IPB University, and Laboratory of Forest Product Engineering, Department of Forest Products IPB University. The experiment involved 3 mm in diameter of two agel ropes incorporating control rope and agel rope soaked in 1% chitosan for 24 hours. The control rope was light brown, stiff, and rough, while the treated rope was darker, less stiff, and smoother. The breaking strength of control and treated rope was significantly different (P<0.05), which in respect constitute 15.06 kgf and 24.54 kgf. The elongation of both ropes were also significantly different (P<0.05), making 10,56% for control and 18,04% for treated rope. Breaking strength of the agel rope decreased by 50% after being immersed for 28 days.
 Keywords: agel rope, chitosan, breaking strength, elongation

Social Embeddedness of Pro-Environment Fisherman Community in The Use of Eco-Friendly Fishing Gear Technology at Drini Beach Gunung Kidul Yogyakarta


 
 
 This study aims to determine to what extent the knowledge of the fishing communities of Gunung Kidul Yogyakarta in interpreting the use of environmentally friendly fishing technology. Also, to analyze how the form of social embeddedness related to the conservation of environmentally friendly fishing gear is seen from the dimensions of relational relationships and structural relationships in the context of social networks Coastal fishermen community Drini Gunung Kidul Yogyakarta. This study uses the sociology theory of economics from Granovetter on Social Embeddedness in "The New Economic Sociology". The research method was conducted qualitatively with phenomenology approach. The data collection was done by observation and in-depth interview. The results show that the understanding of fishing communities related to the use of environmentally friendly fishing gear technology cannot be separated from the existing social network of fishers. In the relational dimension of conservation form among fishers skipper, fisherman and fisherman who form a cooperative relationship in the fulfillment of daily necessities, including in the face of famine season, so that no fisher is desperate to use environmentally friendly fishing gear to get personal benefit Only. Meanwhile, in the structural dimension or fisherman institution, the rules on marine environment management including conservation of environmentally friendly fishing gear are among the cooperative units, and fishermen organizations under the supervision of the Office of Marine and Fishery of Yogyakarta by holding socialization and fish catching operation every three times in a year.
 
 

Keeping watch on the unwatchable: technological solutions for the problems generated by ecosystem‐based management

AbstractEcosystem‐based management is an emerging paradigm influencing the management of commercial fisheries. Increasingly, developed nations are adopting explicit legislation and policy governing the assessment and management of their fisheries against criteria of ecological sustainability. Yet the ability to evaluate ecosystem impacts of fisheries is compromised by a general lack of understanding of marine ecosystem function (beyond the population level) and a lack of robust and practical indicators for ecosystem health and management. Recent technological advances can assist in developing criteria, including structural analyses of seafloor communities potentially impacted by fishing gears (e.g. demersal trawling). Similarly, advances in fishing gear technology, including improved selectivity and the development of gears which have a more benign environmental impact, can mitigate some of the ecological impacts of fishing. Such technological advances are summarized in the context of contemporary fisheries management.

Economics of science in fishery sector—the European case

Fisheries research organisations are described as large entities. In the European Union, Iceland, Israel and Norway, one or two main fisheries research institutes have been identified. In this detailed examination, research programmes in fisheries is presented in various technological fields. Theoretical knowledge of Evolutionary economics is used to understand the functioning of fisheries research in these 17 countries. Concepts of technological trajectories, path-dependancy, technological lock-in are valuable. Six main technological trajectories synthetize the foundations of research in fisheries amongst European Union, Iceland, Israel and Norway. It deals with fishery biology, fishing gear technology, aquaculture, ecology, quality (of habitat anf fish), and socioeconomics. For example, most of research institutes are concerned with the trajectory of fishery biology. In others cases, specificities exist in a few countries as socioeconomics.

Historical Review of the Management Approach to Exploitation and Introduction in SCOL Lakes

Though environmental deterioration and destruction has always concerned fishery biologists, much of their scientific and technical activities have been related to understanding and managing direct fisheries harvests, to "improving" fisheries resources through introductions of non-native species, and to assisting the reproductive process of valued stocks with a hatchery program. The history of these approaches in western countries is sketched by time periods as follows: pre-1840, gradually developing science and technology with intensifying direct exploitation; 1840–70, human food shortages in Europe, spreading of artificial propagation and development of hatchery and stocking techniques; 1870–1900, extensive introductions of non-native species, intensified exploitation because of technological advances and market forces, great expansion of artificial propagation; 1900–45, fluctuation in exploitation partly related to the socioeconomic aspects of world wars; 1945–60, conventional hatcheries closing, new fishing gear technology, more intense exploitation, growing concerns about pollution and eutrophication; 1960–70, "back to conservation" movement.