scholarly journals Kepadatan Stok, Komposisi Jenis, Struktur Ukuran dan Daerah Penangkapan Ikan di Teluk Jakarta

2021 ◽  
Vol 14 (2) ◽  
Author(s):  
Prihatiningsih Wagiyo ◽  
Prihatiningsih P ◽  
Sri Turni Hartati
Keyword(s):  
Species Composition ◽  
Density Distribution ◽  
Size Structure ◽  
Demersal Fish ◽  
Horizontal Distribution ◽  
Fishing Ground ◽  
Fishing Gear ◽  
Mouth Part ◽  
Fishery Resource ◽  
Fishing Area

Jakarta Bay has a variety of biota as a fishery resource, the utilization of which is continuous intensively. this study aims to obtain the data and information on stock density, species composition, size structure and fishing ground.  The research was conducted by means of exploration and observation in 2016. The results showed that the average stock density in Jakarta Bay was 11,400 kg/km2 and in the Seribu Islands 25,500 kg/km2. Stock density distribution based on vertical coastline is obtained; mouth part 13,925 kg/km2, middle 11,709 kg/km2 and the coast 8,326 kg/km2. Coastal horizontal distribution; West area 15,311 kg/km2, Central 9,256 kg/km2 and East 9,259 kg/km2. Based on area in the Seribu Islands 25,500 kg/km2, Jakarta Bay 11,320 kg/km2 and Tangerang 11,610 kg/km2. Stock composition includes; demersal fish 84.53%, Cephalopods 9.98%, Crustaceae 4.32% and others. The fishing area of gill nets is wider and more spread out than other fishing gear.

scholarly journals ZONASI PEMANFAATAN KAWASAN PERIKANAN TANGKAP DI TELUK BANTEN (Zonation of Utilization Fishing Zone in Banten Bay)

2013 ◽  
Vol 2 (2) ◽  
pp. 177
Author(s):  
D. Ernaningsih ◽  
Domu Simbolon ◽  
Eko Sri Wiyono ◽  
Ari Purbayanto
Keyword(s):  
Demersal Fish ◽  
Sea Surface ◽  
Fishing Ground ◽  
Gis Analysis ◽  
Fishing Season ◽  
Development Indicators ◽  
Relationship Analysis ◽  
Index Analysis ◽  
Zone Ii ◽  
Fishing Area

<p>Utilization of fishing area in Banten Bay by various activities may cause multi sectors conflicts related to management of the bay. The integrated zone system in that area has not been established yet; therefore it is needed to be studied. The objectives of this study were to 1) determine fishing season and fishing ground; 2) determine indicators and criteria of fishing zone; 3) establish fishing zone. The study was conducted in four fish landing centers which are located in Karangantu, Terate, Wadas, and Kepuh from January to April 2010. Data were collected by surveying analyzed using the fishing season index analysis, relationship analysis between sea surface temperature, chlorophyll-a and fish abundance, and GIS analysis. Based on the results, it were revealed that 1) peak fishing season of pelagic fish was from November to January and demersal fish was from November to December; 2) the catches from fishing grounds surrounding Panjang island were anchovies, trevallies, squids, Indian mackerels, pony fishes, Fringescale sardinella; surrounding Pamujan besar island were threadfin bream, shrimps; and surrounding Tunda island were eastern little tuna, narrow barred king mackerels, black pomfret, red snapper, great trevally, scads, mullets, squids; 3) development indicators of fishing zone were (i) feasibility of fishing ground, (ii) compatibility of fishing gears with fishing grounds, (iii) possibility of conflicts, (iv) infrastructure, (v) carrying capacity of environment; 4) Banten bay water was divided into three fishing zones, they were (i) passive zone, (ii) passive and outboard motor zone, (iii) active and inboard motor zone.</p><p><strong>Key words:</strong> fishing ground, fishing zone, utilization</p>

scholarly journals Pengaruh ekstrak udang pada umpan terhadap hasil tangkapan pancing dasar di perairan Tateli Weru, Kabupaten Minahasa

2016 ◽  
Vol 2 (3) ◽  
Author(s):  
Ucha E. Janis ◽  
Alfret Luasunaung ◽  
Lefrand Manoppo
Keyword(s):  
Experimental Method ◽  
Coastal Waters ◽  
Scientific Information ◽  
Demersal Fish ◽  
T Test ◽  
Fishing Ground ◽  
Fishing Gear ◽  
Fish Catch

ABSTRACT The success of baited hook and line fishing gear is determined by the activity of fish in terms of finding and catching food. Adding shrimp extract on bait may increase the fishing power of the bait; but this kind of scientific information, particularly on the bottom hand line is not widely available. This study aimed to determine the effect of shrimp extracts on demersal fish catch in the surrounding fishing ground and to identify the species caught by the bottom hand line. This research was conducted in coastal waters Tateli Weru Village, District of Mandolang, Minahasa in October 2015 which was based on an experimental method. Six units of bottom hand line was operated, where three units using bait of scad mackerel marinated in shrimp extract, and three other units using plain bait of scad mackerel; and the data were analyzed using t-test. Total catches was 60 fish; 38 fish caught by bait with shrimp extract, and 22 fish caught by bait without shrimp extract. The results showed that use of bait with shrimp extract give more catches. Keywords: bottom hand line, extrack of shrimp, demersal fish, Tateli Weru   ABSTRAK Keberhasilan alat tangkap pancing dasar berumpan sangat ditentukan oleh aktivitas hidup ikan dalam hal mencari dan menangkap makanan. Pemberian ekstrak udang pada umpan diduga dapat meningkatkan kemampuan tangkap dari umpan; namun informasi ilmiah seperti ini, khususnya pada pancing dasar belum banyak tersedia. Penelitian ini bertujuan untuk mengetahui pengaruh ekstrak udang terhadap hasil tangkapan ikan demersal di sekitar daerah penangkapan dan mengidentifikasi jenis ikan hasil tangkapan pancing dasar. Penelitian ini dilakukan di perairan pantai Desa Tateli Weru, Kecamatan Mandolang Kabupaten Minahasa  pada bulan Oktober 2015 yang didasarkan pada metode experimental. Enam unit pancing dasar dioperasikan, di mana tiga unit menggunakan umpan ikan malalugis yang direndam dalam ekstrak udang, dan tiga unit lainnya hanya menggunakan umpan ikan malalugis tanpa ekstrak; dan data dinalisis dengan uji t. Tangkapan total berjumlah 60 ekor; 38 ekor tertangkap dengan umpan yang diberi ekstrak udang, dan 22 ekor tertangkap dengan umpan tidak memiliki ekstrak udang. Hasil analisis menunjukkan bahwa penggunaan ekstrak udang pada umpan memberikan hasil tangkapan yang lebih banyak. Kata-kata kunci: pancing dasar, ekstrak udang, ikan demersal, Tateli Weru

scholarly journals Selectivity of Fishing Gear for Scomberomorus guttatus (Bloch & Schneider, 1801) Commodities in Pangandaran Fishing Ground, West Java

2020 ◽  
pp. 1-10
Author(s):  
Satya Krismatama ◽  
Indah Riyantini ◽  
Iwang Gumilar ◽  
Lantun Paradhita Dewanti
Keyword(s):  
Fisheries Management ◽  
Analysis Data ◽  
Demersal Fish ◽  
Pelagic Fish ◽  
Fishing Ground ◽  
Fishing Gear ◽  
Beach Seine ◽  
Production Values ◽  
Fishing Gears ◽  
By Catch

Scomberomorus guttatus is a large pelagic fish commodity in Pangandaran Regency. It has the highest amount and production values, therefore it needs to be maximally utilized but remains its sustainability. The purpose of this research is to determine the most selective fishing gear for Scomberomorus guttatus commodities based on the frequency of Scomberomorus guttatus length, the proportion of the main catch and by-catch in Pangandaran Regency for sustainable and environmentally friendly capture fisheries management. The data used in this study are the number of catches, catch weight and length of the Scomberomorus guttatus catches from gillnet, longline, and beach seine. Data used in research collected during November 2018-January 2019 in Pangandaran Regency. Analysis data used in the study is the analysis of the selectivity of the types of catches and the selectivity of the length of the catchable Scomberomorus guttatus from each of fishing gears. The results showed that of the three fishing gears used to catch Scomberomorus guttatus, gillnet is the most selective and productive fishing gear for utilizing Scomberomorus guttatus commodity because it has a 43,2% of main catch, 84,6% of the feasible Scomberomorus guttatus size. Longline is a fishing gear that is only selective to the length size of the Scomberomorus guttatus that has a percentage of decent size catch equal to 86,4%, while beach seine isn't selective fishing gear and unproductive for Scomberomorus guttatus commodities due to it designed to catch a demersal fish.

scholarly journals KOMPOSISI HASIL TANGKAPAN PERIKANAN PAYANG DAN BAGAN TANCAP SEBELUM REKLAMASI TELUK JAKARTA (GIANT SEA WALL)

2021 ◽  
Vol 14 (1) ◽  
Author(s):  
Budi Nugraha ◽  
Kasim Kamaluddin ◽  
Hartati Sri Turni
Keyword(s):  
Demersal Fish ◽  
Pelagic Fish ◽  
Catch Rate ◽  
Fishing Ground ◽  
Small Fish ◽  
Fishing Gear ◽  
Fish Group ◽  
Catch Composition ◽  
Sea Wall ◽  
High Catch Rate

Payang merupakan alat tangkap dengan laju tangkap relatif tinggi di Teluk Jakarta, sedangkan bagan tancap dikenal kurang selektif karena hasil tangkapannya didominasi oleh ikan berukuran kecil baik jenis pelagis maupun demersal. Penelitian ini dilaksanakan dengan metode fishing experiment pada payang dan bagan tancap. Hasil penelitian menunjukkan bahwa hasil tangkapan payang dan bagan tancap didominasi oleh jenis ikan demersal namun proporsi tangkapannya tidak jauh berbeda dengan jenis ikan pelagis. Komposisi ikan hasil tangkapan payang pada Agustus dan Oktober didominasi oleh jenis ikan pelagis, sedangkan pada bulan Desember didominasi oleh jenis ikan demersal. Nilai laju tangkap payang untuk jenis ikan pelagis ditemukan tinggi pada Agustus dan Oktober disebabkan oleh dominasi ikan cekong (Sardinella lemuru) dalam jumlah besar. Komposisi ikan hasil tangkapan bagan tancap pada Mei didominasi oleh jenis ikan demersal, sedangkan pada Oktober didominasi oleh jenis ikan pelagis. Daerah penangkapan payang meliputi perairan Pulau Damar, Pulau Bendera, Muara Pecah, Muara Angke, Pulau Onrust, Pulau Putri, Kronjo, sedangkan daerah penangkapan bagan tancap terkonsentrasi di sebelah barat perairan Teluk Jakarta, sekitar Pulau Kayangan, Pulau Bidadari dan Pulau Onrust.   ABSTRACT Payang, a mini danish seine, is an artisanal fishing gear that has high catchability rate. Like payang, another dominant fishing gear in Jakarta Bay, the lift net, is also known as unselective fishing gear since small fish dominate its catch. This research uses the fishing experiment method with payang and lift net to figure out the gears' catch composition and catch rate. The result shows both fishing gears predominately caught the demersal fish group, but its proportion does not much from the pelagic group. During August and October, the catch composition of payang was dominated by pelagic fish, while demersal fish was caught mostly in December. The high catch rate for pelagic fish was recorded in August and October since cekong fish (Sardinella lemuru) dominated the cath. The catch composition of lift net was dominated by demersal fish during May, while pelagic fish were mostly captured in October. Payang’s fishing ground includes Pulau Damar waters, Pulau Bendera, Muara Pecah, Muara Angke, Pulau Onrust, Pulau Putri, and Kronjo, while the lift net dominates the western part of part of Jakarta Bay including Pulau Kayangan, Pulau Bidadari, and Pulau Onrust.     

scholarly journals Redundancy in metrics describing the composition, structure, and functioning of the North Sea demersal fish community

2012 ◽  
Vol 69 (1) ◽  
pp. 8-22 ◽  
Author(s):  
Simon P. R. Greenstreet ◽  
Helen M. Fraser ◽  
Stuart I. Rogers ◽  
Verena M. Trenkel ◽  
Stephen D. Simpson ◽  
...  
Keyword(s):  
North Sea ◽  
Fish Community ◽  
Size Structure ◽  
Demersal Fish ◽  
Community Size ◽  
The North ◽  
Management Objectives ◽  
The North Sea ◽  
Composition Structure ◽  
And Function

Abstract Greenstreet, S. P. R., Fraser, H. M., Rogers, S. I., Trenkel, V. M., Simpson, S. D., and Pinnegar, J. K. 2012. Redundancy in metrics describing the composition, structure, and functioning of the North Sea demersal fish community. – ICES Journal of Marine Science, 69: 8–22. Broader ecosystem management objectives for North Sea demersal fish currently focus on restoring community size structure. However, most policy drivers explicitly concentrate on restoring and conserving biodiversity, and it has not yet been established that simply restoring demersal fish size composition will be sufficient to reverse declines in biodiversity and ensure a generally healthy community. If different aspects of community composition, structure, and function vary independently, then to monitor all aspects of community general health will require application of a suite of metrics. This assumes low redundancy among the metrics used in any such suite and implies that addressing biodiversity issues specifically will require explicit management objectives for particular biodiversity metrics. This issue of metric redundancy is addressed, and 15 metrics covering five main attributes of community composition, structure, and function are applied to groundfish survey data. Factor analysis suggested a new interpretation of the metric information and indicated that a minimum suite of seven metrics was necessary to ensure that all changes in the general health of the North Sea demersal fish community were monitored properly. Covariance among size-based and species-diversity metrics was low, implying that restoration of community size structure would not necessarily reverse declines in species diversity.

Results of fisheries research of the Shaturskaya group of lakes

Fisheries ◽  
2021 ◽  
Vol 2021 (1) ◽  
pp. 52-60
Author(s):  
Andrey Bykov
Keyword(s):  
Species Composition ◽  
Fish Species ◽  
Thermal Regime ◽  
Seasonal Migration ◽  
Fishing Gear ◽  
Invasive Fish ◽  
Cooling Reservoir ◽  
Quantitative Indicators

Based on the results of comprehensive fisheries research, a brief description of the ecosystem of the lake of the Shaturskaya group operated in the mode of the cooling reservoir of the Shaturskaya GRES is given. The features of the thermal regime of the Shatursky lakes in the zone of the circulating flow of cooled waters are considered. A brief description of the species composition and quantitative indicators of the development of phytoplankton, zooplankton and macrozoobenthos communities is given. The structure of fish catches in the lakes depending on the fishing gear used is considered according to the data of accounting surveys with set nets and fry drag. The process of formation of the ichthyofauna of Shatursky lakes, characteristic of natural and man-made ecosystems of reservoirs-coolers of energy facilities, is shown. The occurrence of native and invasive fish species in catches is described, and the mechanism of seasonal migration of fish depending on the temperature and oxygen regimes of the Shatursky lakes is considered.

scholarly journals A first appraisal of the landing and mechanism of the Santos fishery

1960 ◽  
Vol 11 (1) ◽  
pp. 05-85 ◽  
Author(s):  
I. D. Richardson ◽  
M. N. de Moraes
Keyword(s):  
Fishing Gear ◽  
Important Species ◽  
Fishing Area ◽  
Important Fish

This paper summarizes and analyses the landing data collected at Santos, Brazil, during the 12 months period, July 1958-June 1959. These data are given in terms of weight landed of the more important fish and shrimp and also in terms of value. The distribution of the landings of each of the more important species is shown both according to the type of fishing gear used and fishing area. The fishing area is given in the form of statistical rectangles of 60 miles square. The landings are broken down to obtain a figure for the landing per hour of fishing for each species, for each gear and for each rectangle fished. This figure of landing per unit fishing time is used to compare one area with another, one gear with another, and one month with another for each of the important species. In this way, comparisons of the available density of a species by time, area and fishing gear are made.

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

scholarly journals Harmonization of laws related to the protection of artisanal fishermen fishing grounds in Aceh Province

2021 ◽  
Vol 869 (1) ◽  
pp. 012054
Author(s):  
S Sulaiman ◽  
M A Abdullah ◽  
T M Mansur ◽  
N Roesa
Keyword(s):  
Coastal Waters ◽  
Important Task ◽  
Fishing Ground ◽  
Small Scale ◽  
Fishing Gear ◽  
Potential Conflict ◽  
Legal Documents ◽  
Aceh Province ◽  
The Government ◽  
Harmonization Of Law

Abstract This paper aims to examine how to protect of artisanal fishermen fishing ground and the policies that protect them. Small-scale fisher fishing grounds has to have a special attention due to their limitation. They are using very simple fishing gear, so they can’t sail far away from the coastal waters. The Fishing law give a specific attention for this matter, by limiting fishermen with 5 gross tonnage (GT) are only able to conduct their activities within the coastal waters. This study combines legal documents and the results of interviews with fishermen on 5 GT vessel. this studi of find, then the Law Number 27/2016 changed this regulation by increasing gross tonnage for small-scale fishermen from 5 became 10 GT, and it attract more serious problems for these small-scale fishermen since they have no exclusive fishing ground anymore. It will also affect to changes of fishing lane; fishing ground and vessels authorization procedure. By increasing GT, the 10 GT vessels also have rights to sail in the same fishing ground with 5 GT vessels and it’s created a potential conflict between the fishermen. So, harmonization of law is important task for the government in avoiding the overlapping rules on vessels criteria, by choosing law that prioritize on small-scale GT vessels.

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