scholarly journals Abandoned, Lost or Otherwise Discarded Fishing Gear (ALDFG) in Tuna Pole-and-Line Fisheries

2021 ◽  
Author(s):  
Christopher K. Pham ◽  
Miguel Machete ◽  
Zaccari Edwards ◽  
Shiham Adam ◽  
Roy Bealey ◽  
...  
Keyword(s):  
Indian Ocean ◽  
Environmental Impact ◽  
Primary Sources ◽  
Fishing Gear ◽  
Fishing Industry ◽  
Marine Litter ◽  
Global Industry ◽  
Fishing Vessels ◽  
Tuna Fishing ◽  
Traditional Fishing

Abstract The fishing industry is recognized as one of the primary sources of at-sea marine litter, largely through its contributions via abandoned, lost or otherwise discarded fishing gear (ALDFG). Individual fleet’s contributions to ALDFG vary significantly across this global industry. While much information is available for some fisheries, the rate of ALDFG remains poorly known for many techniques. In this study, we used data collected by fisheries observers onboard pole-and-line fishing vessels in the Azores (Atlantic Ocean) and the Maldives (Indian Ocean) to provide an accurate and representative estimate of ALDFG for this gear. Our analysis of 993 fishing events demonstrated ALDFG contributions much lower than have been recorded for any other commercial tuna fishing gear. Overall, we found that an angler loses some monofilament line in 1.4% (±0.2) of fishing events. This informs that for every thousand tonnes of tuna harvested using this fishing technique, 0.3 kg of nylon is entering the marine environment. Globally, we estimate that all pole-and-line fisheries together contribute to 96 kg ± 42.6 kg of ALDFG per year. These results further evidence the low environmental impact of this traditional fishing practice, as well as the need for other methods to convert to less damaging gears.

scholarly journals KOMPOSISI HASIL TANGKAPAN DAN DAERAH PENANGKAPAN PANCING ULUR TUNA DI PERAIRAN SENDANG BIRU

2019 ◽  
Vol 25 (4) ◽  
pp. 241
Author(s):  
Maya Agustina ◽  
Irwan Jatmiko ◽  
Ririk Kartika Sulistyaningsih
Keyword(s):  
Indian Ocean ◽  
Landing Site ◽  
Yellowfin Tuna ◽  
Purse Seine ◽  
Fishing Ground ◽  
Fishing Gear ◽  
Tuna Fishing ◽  
The Indian Ocean ◽  
High Seas

Tuna, cakalang dan tongkol (TCT) merupakan jenis hasil tangkapan ikan yang memiliki nilai ekonomis penting dan masih terdapat peluang untuk dimanfaatkan. Salah satu sentra perikanan tuna, cakalang dan tongkol di kawasan Indonesia Barat yang terbesar adalah di Kabupaten Malang tepatnya di Pelabuhan Perikanan Pantai (PPP) Pondokdadap Sendang Biru. Jenis alat penangkapan ikan yang digunakan oleh nelayan untuk menangkap tuna di perairan ini adalah pancing ulur (handline) yang dioperasikan dengan menggunakan bantuan rumpon. Tujuan penelitian ini adalah untuk mengetahui informasi sebaran daerah penangkapan (teritorial, ZEE dan laut lepas) dan bagaimana dinamika hasil tangkapannya khususnya tuna, cakalang dan tongkol. Pancing ulur mendominasi alat penangkapan ikan yang digunakan di PPP Pondokdadap, Sendang Biru tercatat sebanyak 70,42%, sedangkan pukat cincin sebanyak 9,82% dan pancing rawai sebanyak 19,76%. Jenis hasil tangkapan pancing ulur terbanyak adalah cakalang dan juwana tuna. Daerah penangkapan nelayan pancing ulur yang berbasis di PPP Pondokdadap, Sendang Biru menyebar pada kawasan perairan dengan batasan antara 8º – 12º LS dan 108º – 115º BT atau secara geografis berada di dalam perairan teritorial, ZEE dan di laut lepas. Prosentase hasil tangkapan TCT yang tertangkap pancing ulur berdasarkan wilayah perairan seperti berikut: teritorial sebanyak 0,63%, ZEE sebanyak 78,68% dan di luar ZEE (laut lepas) sebanyak 20,69%. Tuna, skipjack and little tuna are economically important and still has the potential to cathed. One of the fisheries centers tuna, skipjack and little tuna landing site in the western part of Indonesia is in Malang located at Pondokdadap Sendang Biru fishing port. The fishing gear commonly used by Sendang Biru fishermen to catch tuna in the Indian Ocean waters is handline which is operated around FADs. The purpose of this study was to find out information the distribution of fishing areas (territorial, EEZ and high seas) and how the dynamics of the catch especially tuna, skipjack and little tuna. The dominant fishing gear in PP Pondokdadap Sendang Biru is the handline with 70.42%, followed by purse seine 9.82% and longlines 19.76%. The dominant catches caught by handline were skipjack and juvenile of yellowfin tuna. Fishing ground of hand line based in PP Pondokdadap located in waters with boundaries between 8º - 12º LS and 108º - 115ºBT or geographically located in the waters territorial, EEZ and on the high seas. Tuna catches precentage caught by handline in territorial, EEZ and high seas, accounting for 0.63%, 78.68% and 20.69%, respectively. 

Production and Biomass of Pokea Clam (Batissa violacea var. celebensis von Martens, 1897) in the Langkumbe River Waters North Buton Southeast Sulawesi

2021 ◽  
Vol 5 (1) ◽  
pp. 14-24
Author(s):  
Tri Abdul Rahman ◽  
Bahtiar Bahtiar ◽  
Pramono Hery Santoso
Keyword(s):  
Sampling Method ◽  
Total Sample ◽  
Dry Mass ◽  
Annual Production ◽  
Fishing Gear ◽  
River Waters ◽  
The People ◽  
Length Width ◽  
Traditional Fishing ◽  
Swept Area

Langkumbe River is located in West Kulisusu District and has long been used by the community for various daily activities. One of the resources often used by the people around Langkumbe River is pokea clams. The aim of this study was to determine the production and biomass of pokea clams (B. violacea) in Langkumbe River Waters of North Buton Regency from August to October 2017. The sampling method used was swept area method using a traditional fishing gear "Tangge" (fishing gear). The samples were measured for the length, width and thickness.  The total weight was measured with the clam/total mass (MT) and the weight of the meat. The samples were dried using an oven for 24 hours at 70 °C to obtain the shell-free dry mass (SFDW). Data were analyzed using standard formulas. The total sample obtained was 1.307 individuals. The highest density of pokea clam was found in August at 596.8 ind/m². Annual production of pokea clam (B. violacea) in Langkumbe River with a total annual production of 1,107.33 gSFDW/m2/year. The highest and lowest production are 297.09 gSFDW/m²/year at size 2.19-2.54cm and -0.16 gSFDW /m²/year at size 4.70-5.05cm, respectively. The total population biomass was 528.03 gSFDW/m2 with the highest biomass 171.72 gSFDW/m²/year at size 2.55-2.90 cm and the lowest was 1.40 gSFDW /m²/year at size 4.70-5.05 cm, so that the recovery rate (P/B ratio) was 2.1 gSFDW/m2/year.

An alternative to modern salmon fishing gear

Fisheries ◽  
2021 ◽  
Vol 2021 (1) ◽  
pp. 99-102
Author(s):  
Oleg Telyatnik
Keyword(s):  
Work Experience ◽  
Fishing Gear ◽  
New Developments ◽  
Traditional Fishing

Based on the study of work experience in the areas of p.o. Kamchatka in the work proposed alternative fishing tools for salmon fishing. Under the alternative in the work are called fishing tools that are not widely used or are new developments. The use of such fishing gear will make it possible to catch elk in areas where traditional fishing is not currently conducted. However, this is important due to the approach of salmonids, in 2020, to traditional fishing areas.

Ghana’s Experience in Distant-Water Fisheries

1973 ◽  
Vol 30 (12) ◽  
pp. 2463-2467 ◽  
Author(s):  
J. N. N. Adjetey
Keyword(s):  
African State ◽  
Spare Parts ◽  
West African ◽  
Fishing Industry ◽  
Constant Attention ◽  
Fishing Vessels ◽  
Exploitation And Utilization ◽  
West African State ◽  
Frozen Fish ◽  
Fish And Fishery Products

Ghana’s investment in a modern fishing industry includes fishing vessels of various ranges and sizes, costing over £25.6 million. There have also been heavy investments in infrastructure, such as the Tema fishing harbor, boatbuilding, cold storage, and repair and maintenance facilities. These investments were made to: improve the protein content of the Ghanaian diet; stop importation of frozen fish and fishery products; develop the skills of the fishing community; develop an export trade in fish.Efficient use of these investments has been hampered by various factors. Transition from a canoe to a sophisticated fishery of refrigerated trawlers and factory ships was too rapid. It was assumed that once the fishing industry was equipped with a modern fleet it would become self-supporting within a short time. But this was not the case because realization of this goal depended on: efficiency with which the fleet was operated, better handling and care of fish, better marketing and distribution methods, search for new grounds, and constant attention to conservation of stocks.Lack of finance made operation of the fleet difficult. Spare parts were not in adequate supply and at times vessels had to stop fishing for lack of them.Lack of local personnel led to dependence on alien captains, mates, engineers, and shore-based staff. The number of alien crew was high initially, but Ghanaians have gradually taken over key positions on the vessels.Ghana is the only West African state with a fleet of deep-sea trawlers. This situation and recent unilateral extensions of fishing limits by West African states have led to a new problem which might have far-reaching effects on the operation of the fleet.But Ghana’s attempt to participate in the exploitation and utilization of West African fishery resources should encourage other African states to similar efforts.

Filling missing links in albuneid crab distributions (superfamily Hippoidea) in the Bay of Bengal, eastern Indian Ocean

Crustaceana ◽  
2018 ◽  
Vol 91 (12) ◽  
pp. 1495-1504 ◽  
Author(s):  
Rajan Kumar ◽  
Shikha Rahangdale ◽  
Subal Kumar Roul
Keyword(s):  
Indian Ocean ◽  
Bay Of Bengal ◽  
Morphological Characters ◽  
Eastern Indian Ocean ◽  
Species Discrimination ◽  
Gulf Of Mannar ◽  
Fishing Gear ◽  
Morphometric Characters ◽  
First Time

Abstract Albuneid crabs are specialized and active sand-burrowing organisms. Despite their substantial diversity, their ability to avoid fishing gear leads to “under collection” and a discontinuous record of distribution. The present study documents the first distributional record of Albunea occulta Boyko, 2002 from the Bay of Bengal, eastern Indian Ocean. Albunea thurstoni Henderson, 1893 is also recorded for the first time from the area, i.e., from the Gulf of Mannar, southwestern Bay of Bengal. This study further reports variation in morphological characters, especially in the carapace grooves (CG) from previous records and across specimens from different regions. Morphometric characters were found useful in species discrimination, which is explained as well.

scholarly journals From Line to Loop, A Circular 3D Printing Initiative for Upcycling Commercial Fishing Plastics

2021 ◽  
Author(s):  
◽  
Matthew O'Hagan
Keyword(s):  
3D Printing ◽  
Large Scale ◽  
Commercial Fishing ◽  
Fishing Gear ◽  
Fishing Industry ◽  
Distributed Manufacturing ◽  
Research Through Design ◽  
Management Scheme ◽  
The Pacific ◽  
Manufacturing Technologies

<p>The current linear use of plastic products follows a take, make and waste process. Commonly used by large scale industries, including the commercial fishing industry, this process results in approximately 8 million tonnes of plastic entering the ocean every year. While the fishing industry supplies livelihoods, a valuable food source and financial capital to millions of people worldwide, it’s also a significant contributor to the ocean plastics crisis. Without effective recycling schemes, an estimated 640,000 tonnes of plastic fishing gear is abandoned, lost or discarded within the ocean every year. New Zealand is no exception to this problem, as China’s waste import ban, as well as a lack of local recycling infrastructures, has resulted in the country’s commercial fishing gear polluting local coastlines as well as islands in the pacific. With the only other option for the plastic fishing gear being landfill, there is a critical need for circular initiatives that upcycle used plastic fishing gear locally into eco-innovative designs.  This research examines the issue by investigating how used buoys, aquaculture ropes and fishing nets from New Zealand’s fishing company ‘Sanford’ may be upcycled into eco-innovative designs through distributed manufacturing technologies. It introduces the idea of the circular economy, where plastic fishing gear can be reused within a technical cycle and explores how 3D printing could be part of the solution as it provides local initiatives, low material and energy usage and customisation. Overall, the research follows the research through design based on design criteria approach. Where materials, designs and systems are created under the refined research criteria, to ensure the plastic fishing gear samples are upcycled effectively into eco-innovative designs through 3D printing.  The tangible outputs of this research demonstrate how a circular upcycling system that uses distributed manufacturing technologies can create eco-innovative designs and provide a responsible disposal scheme for plastic fishing gear. It provides a new and more sustainable waste management scheme that could be applied to a range of plastic waste streams and diverts materials from entering the environment by continuously reusing them within the economy.</p>

scholarly journals Bioecology of Manggabai Fish (Glossogobius giuris) in Limboto Lake

2020 ◽  
Vol 4 (2) ◽  
pp. 89
Author(s):  
Dewi Nuryanti Fazrin ◽  
Hasim Hasim ◽  
Juliana Juliana
Keyword(s):  
Fishing Gear ◽  
Residential Areas ◽  
Chemical Parameters ◽  
Fish Traps ◽  
Physical And Chemical Parameters ◽  
Glossogobius Giuris ◽  
Net Cages ◽  
Physical And Chemical ◽  
Traditional Fishing ◽  
The Relationship

The purpose of this study was to determine the relationship between the length and weight of Manggabai fish (Glossogobius giuris) and to know the relationship between the presence of Manggabai fish (Glossogobius giuris) and water quality in Limboto Lake. This research was conducted in February 2019, located in the waters of Lake Limboto, Gorontalo Province. The method used in determining the location of sampling is Purposive Sampling. Fish sampling is determined by considering fishing locations, litoral areas, the presence of residential areas, agricultural and plantation areas, the existence of floating net cages and in the middle of the lake. The study was conducted at 20 observation stations using fish traps in the form of bamboo and used motorcycle tires that have been modified and become traditional fishing gear. The results showed that the physical and chemical parameters in Lake Limboto and showed temperature values ​​ranged from 29.77 to 31.630C, dissolved oxygen levels ranged from 2.1 to 5.48 ppm, pH ranged from 7.09 to 8.94, TDS ranging from 0.251 to 0.369, Nitrite Levels 0.04-0.08 ppm, Nitrate Levels 1.2-4.7 ppm, BOD ranges from 2.5-57 ppm and phosphate levels 0.1-1.14 ppm. The relationship between length and body weight of fish are allometric, where W = 0.8769 L10,023 and constant b (10,023)> 3.

scholarly journals Pengaruh umpan buatan warna merah dan kuning terhadap hasil tangkapan pancing pompa di perairan pantai Desa Bajo, Kabupaten Minahasa Selatan

2015 ◽  
Vol 2 (1) ◽  
Author(s):  
Hermanus B. Usili ◽  
Ivor L. Labaro ◽  
Mariana E. Kayadoe
Keyword(s):  
Reef Fishes ◽  
Experimental Methods ◽  
Demersal Fish ◽  
Fishing Gear ◽  
Traditional Fishing ◽  
Demersal Fishes ◽  
Parrot Fish

ABSTRACT Pump handline is a traditional fishing gear commonly used by fishermen in the Gulf Amurang to catch demersal fishes/reef fishes. This handline uses artificial baits made of fiber cloth of different colors, and an effective bait color is unknown yet. This research aims to study the effect of artificial bait colors on the pump handline catches, and to identify the species. This research was conducted through experimental methods by operating four pump handline units using red and yellow artificial baits starting at 07:00 am until 14:00 pm. The catches were 33 fishes, consisting of 23 fishes caught with red baits and 10 fishes caught with yellow baits. The results showed that red and yellow artificial baits on the pump handline had different number of catches, the average catches per hour of the respective bait colors were 3.83 (4 fishes) and 1.67 (2 fishes). The catch species consisted of 17 species, and was predominated by groupers, parrot fish, snappers and goat fish. Keywords: pump handline, artificial bait, demersal fish/reef fishes.   ABSTRAK Pancing pompa merupakan alat tangkap ikan tradisional yang umum dioperasikan oleh nelayan di Teluk Amurang untuk menangkap jenis-jenis ikan demersal/ikan-ikan karang. Umpan yang digunakan adalah umpan buatan dari serat kain yang warnanya bervariasi, dan warna umpan yang efektif belum diketahui. Sehingga tujuan penelitian ialah mempelajari pengaruh warna umpan buatan terhadap hasil tangkapan pancing pompa dan mengidentifikasi jenis-jenis ikan yang tertangkap. Penelitian ini dilakukan melalui metode eksperimental dengan mengoperasikan empat unit pancing pompa yang menggunakan umpan buatan warna merah dan kuning pada pukul 07.00 hingga pukul 14:00 Wita. Hasil tangkapan yang diperoleh berjumlah 33 ekor ikan, terdiri dari 23 ekor tertangkap dengan umpan buatan warna merah dan 10 ekor tertangkap dengan umpan buatan warna kuning. Hasil analisis menyimpulkan bahwa umpan buatan warna merah dan warna kuning pada pancing pompa ternyata berbeda, karena umpan warna merah mendapatkan hasil rata-rata 3,83 (4 ekor) per jam, sedangkan umpan warna kuning rata-rata 1,67 (2 ekor) per jam. Jenis-jenis ikan yang tertangkap dengan pancing pompa terdiri dari 17 spesies, dan didominasi oleh goropa, kakatua, gorara dan biji nangka. Kata-kata kunci: pancingpompa,  umpan buatan, ikandemersal/ikankarang

Sign in / Sign up

Export Citation Format

Share Document