scholarly journals PENGARUH PENGGUNAAN LAMPU BAWAH AIR (UNDERWATER LAMP) TERHADAP HASIL TANGKAPAN BAGAN PERAHU (BOAT LIFT NET) DI PELABUHAN PERIKANAN NUSANTARA (PPN) KARANGANTU KOTA SERANG (Effect of Underwater Lamp Usage on Boat Lift Net Fishing Catch at Karangantu Fishing Port Serang City)

2018 ◽  
Vol 14 (1) ◽  
pp. 36
Author(s):  
Aditya Nuraga ◽  
Bogi Budi Jayanto ◽  
Indradi Setiyanto
Keyword(s):  
Pelagic Fish ◽  
Fishing Gear ◽  
Total Catch ◽  
Small Pelagic Fish ◽  
Positive Phototaxis ◽  
The Difference ◽  
Lepturacanthus Savala

Bagan perahu merupakan salah satu jenis alat tangkap di PPN Karangantu yang beroperasi pada malam hari. Bagan perahu menarik ikan target tangkapan yaitu ikan pelagis kecil fototaksis positif menggunakan atraktor cahaya berupa lampu. Salah satu kendala nelayan bagan perahu adalah pencahayaan lampu mengalami pembiasan. Penggunaan lampu bawah air bertujuan untuk mengurangi pembiasan. Tujuan dari penelitian ini adalah mengetahui pengaruh penggunaan lampu bawah air terhadap hasil tangkapan bagan perahu dan mengetahui komposisi hasil tangkapan bagan perahu dengan dan tanpa lampu bawah air. Penelitian ini dilakukan selama 10 trip menggunakan metode experimental fishing. Selisih berat total hasil tangkapan antara bagan perahu dengan dan tanpa lampu bawah air pada trip 1 sebesar 33,4 kg, trip 2 sebesar 38,9 kg, trip 3 sebesar 31,1 kg, trip 4 sebesar 41,1 kg, trip 5 sebesar 28,8 kg, trip 6 sebesar 30,5 kg, trip 7 sebesar 35,4 kg, trip 8 sebesar 34,3 kg, trip 9 sebesar 38,7 kg dan trip 10 sebesar 31,6 kg sehingga menunjukkan hasil tangkapan lebih banyak bagan perahu dengan lampu bawah air. Hasil tangkapan utama bagan perahu adalah ikan Teri (Stolephorus sp.) dan Cumi-cumi (Loligo sp.). Hasil tangkapan sampingan bagan perahu antara lain ikan Petek (Leiognathus sp.), Tembang (Sardinella sp.), Lemuru (Amblygaster sirm), Selar Kuning (Selaroides leptolepi) dan Layur (Lepturacanthus savala). Kesimpulan yang dapat diambil yaitu terdapat pengaruh antara lampu bawah air dengan hasil tangkapan pada bagan perahu. Boat lift net is one type of fishing gear at PPN Karangantu which operates at night. Boat lift net attracts the target catch fish, the small pelagic fish is positive phototaxis using a light attractor in the form of a lamp. One of the constraints of fishermen on the boat chart is that the lighting has experienced refraction. Underwater lamp aims to reduce refraction.The purpose of this research is to know the effect of underwater lamp usage on boat lift net fishing catch and to know the composition of boat lift net with and without using underwater lamp. This research was conducted for 10 trips using experimental fishing methods. The difference in total catch of boat lift net with and without underwater lamp on trip 1 is 33,4 kg, trip 2 is 38,9 kg, trip 3 is 31,1 kg, trip 4 is 41,1 kg, trip 5 is 28,8 kg, trip 6 is 30,5 kg, trip 7 is 35,4 kg, trip 8 is 34,3 kg, trip 9 is 38,7 kg and trip 10 is 31,6 kg so it shows the catch is more the boat lift net with underwater lamp. Fish targets of the boat lift net are Anchovy (Stolephorus sp.) and Cuttlefish (Loligo sp.). The bycatches of boat lift net are Pony fish (Leiognathus sp.), Fringescale sardinella (Sardinella sp.), Indian sardinella (Amblygaster sirm), Trevally (Selaroides leptolepi) and Hairtail fish (Lepturacanthus savala). The conclusion that can be drawn that there is an influence between underwater lamp and catches on the boat lift net.

scholarly journals PENGARUH PERBEDAAN UKURAN MATA PANCING TERHADAP HASIL TANGKAPAN PANCING ULUR DI PERAIRAN PULAU SABUTUNG PANGKEP (Effects of Difference of Hook Size on the Catch of Handline in Sabutung Island Waters of Pangkep Regency)

2016 ◽  
Vol 6 (1) ◽  
pp. 87
Author(s):  
Muhammad Kurnia ◽  
. Sudirman ◽  
Muhammad Yusuf
Keyword(s):  
Data Analysis ◽  
Species Composition ◽  
Pelagic Fish ◽  
Total Catch ◽  
Small Pelagic Fish ◽  
Anova Test ◽  
Fishery Resources ◽  
Normality Test ◽  
Size Number ◽  
Fish Catch

ABSTRACT<br />Effort to exploitation the fishery resources can do in various ways, catching effort by use of hand line is one of the efforts in the field of fisherie. The study was conducted in the Sabutung Island Waters of Pangkep Regency, aims was to investigate the effect of different of hook size and the species composition of the catch of hand line using different of hook size. The effectiveness of hook size is determined by the highest of catches.The method used is experimental fishing on the fishing operation of hand line during 30 trips. Data analysis used normality test and ANOVA test done with SPSS 16.0. The results showed that the differences between hook size number 10 with number 8 and 12 gave influences to the amount of catch. It’s showed by sig score hook size no.10 is 0,00 and sig score hook size no.8 and 12 is 0,00 which them have sig score less than 0,05 and it meant H0 pushed away so it concluded that the hook size influenced the fishing catch. The compositions of fish catch during the study based on the amount and weight were short mackerel, Bigeye scad, Indian scad, yellow tail and diodon histrix. Short mackerel were the most species of fish caught during the research that is equal to 41,2% of the 364 tail of the total catch.<br /><br />Keywords: hand line, hook size, small pelagic fish<br />-------<br /><br />ABSTRAK<br /><br />Usaha mengeksploitasi sumber daya perikanan dapat dilakukan dengan berbagai macam cara, salah satu diantaranya adalah usaha perikanan tangkap dengan menggunakan pancing ulur (hand line). Penelitian dilakukan pada September-Nopember 2012 di Perairan Pulau Sabutung Kabupaten Pangkep, bertujuan untuk mengetahui pengaruh perbedaan ukuran mata pancing dan komposisi hasil tangkapan dari tiga ukuran mata pancing yang berbeda sehingga diperoleh ukuran mata pancing yang efektif. Efektifitas ukuran mata pancing ditentukan berdasarkan jumlah tangkapan terbanyak. Metode yang digunakan adalah metode experimental fishing, dengan operasi penangkapan ikan sebanyak 30 trip. Analisis data menggunakan uji kenormalan dan uji ANOVA dengan SPSS 16.0. Hasil penelitian menunjukkan bahwa perbedaan mata pancing no.10 dengan no.8 dan 12 berpengaruh terhadap jumlah dan berat hasil tangkapan pancing ulur. Hal ini dilihat dari nilai sig mata pancing no.10 sebesar 0,00 dan sig mata pancing no. 8 dan 12 sebesar 0,00 yang menunjukan nilai sig kurang dari 0,05. Ini menunjukan H0 ditolak sehingga disimpulkan bahwa ukuran mata pancing berpengaruh terhadap hasil tangkapan. Komposisi hasil tangkapan selama penelitian berdasarkan jumlah dan berat terdiri atas kembung lelaki, selar bentong, layang, ekor kuning dan ikan buntal. Ikan kembung lelaki adalah jenis ikan yang paling banyak tertangkap selama penelitian yaitu sebesar 41,2% yaitu 364 ekor dari keseluruhan hasil tangkapan.<br /><br />Kata kunci: pancing ulur, ukuran mata pancing, ikan pelagis kecil

scholarly journals Strategi Pengembangan Penangkapan Ikan Pelagis Kecil dengan Alat Tangkap Jaring Insang di Kabupaten Maluku Tenggara (The Development Strategy of Catching the Small Pelagic Fish by Gill Net Fishing Gear in Southeast Maluku Regency)

2015 ◽  
Vol 5 (1) ◽  
pp. 50-59
Author(s):  
Elisabeth Cory Ohoiwutun
Keyword(s):  
Development Strategy ◽  
External Factor ◽  
Pelagic Fish ◽  
Fishing Gear ◽  
Production Volume ◽  
Internal Factor ◽  
Small Pelagic Fish ◽  
Gill Net ◽  
The Development Strategy ◽  
Factor Evaluation

The regency of southeast Maluku has a variety of promising fisheries and marine potency to be managed. Unfortunately, it has not been used properly. The fishing production volume of small pelagic in every season using gill net fishing gear has not been able to increase the income of fishermen in Southeast Maluku regency. The analytical methods used were the External Factor Evaluation (EFE), Internal Factor Evaluation (IFE), Internal-External (IE) and Strengths Weaknesses Opportunities Threats (SWOT) analytical matrix. These were used to develop the strategy of small Pelagic with gill net fishing gear. Based on the result, gill net fishing gear has a number of different production each season against every kind of small pelagic fish.Keywords: fishermen, gillnet, small pelagic fish

scholarly journals DINAMIKA EKOLOGI LAUT SULAWESI (WPP 716) SEBAGAI DAYA DUKUNG TERHADAP PERIKANAN MALALUGIS (Decapterus macarellus Cuvier, 1833)

2015 ◽  
Vol 21 (2) ◽  
pp. 95
Author(s):  
Puji Rahmadi ◽  
Reny Puspasari
Keyword(s):  
Environmental Conditions ◽  
Water Body ◽  
Pelagic Fish ◽  
Total Catch ◽  
Small Pelagic Fish ◽  
North Sulawesi ◽  
Fishery Products ◽  
Fish Schooling ◽  
High Level ◽  
Pelagic Fishery

<p>Ikan Malalugis adalah ikan pelagis kecil yang merupakan hasil tangkapan utama nelayan di perairan Laut Sulawesi. Pada tahun 2012 dilaporkan bahwa perikanan pelagis kecil menjadi salah satu hasil perikanan yang penting, dan hasil tangkapan yang dominan dari perikanan pelagis kecil tersebut adalah ikan malalugis biru (Decapterus macarellus). Jenis ikan malalugis memiliki sifat bermigrasi dan membentuk gerombolan kecil yang mana sangat dipengaruhi oleh kondisi lingkungannya. Tipe arus pasut di Teluk Manado (Laut Sulawesi) merupakan arus pasut bolak balik (reversing current). Banyaknya arus yang begitu aktif merupakan salah satu faktor yang mendukung habitat ikan malalugis. Diduga kekhasan sifat distribusi arus di daerah laut Sulawesi ini yang membuat kelimpahan ikan malalugis relatif tinggi di perairan Sulawesi Utara dibandingkan dengan daerah perairan lainnya di Indonesia. Kelimpahan ikan malalugis yang tinggi mendorong ikan ini menjadi komoditas penting dalam sektor perikanan di Laut Sulawesi. Meski demikian pada tahun 2012 dilaporkan bahwa tingkat produksi ikan malalugis mengalami penurunan. Hal ini diduga karena terlalu tingginya tingkat eksploitasi atau diakibatkan oleh adanya perubahan dalam kondisi ekosistem ikan tersebut di Laut Sulawesi. Oleh karena itu studi ini dilakukan untuk mengkaji tingkat daya dukung lingkungan terhadap keberlangsungan sumberdaya perikanan malalugis di wilayah perairan Laut Sulawesi.</p><p><br /><em>Malalugis fish is a small pelagic fish that constitute the main catch of fishermen in the waters of North Celebes Sea. In 2012 it was reported that small pelagic fishery became one of the important fishery products and it was dominated by the species of Malalugis (Decapterus macarellus). This species has a typical behavior which was highly mobility and forming fish schooling and strongly influenced by environmental conditions. The type of tidal current in North Sulawesi coast is reversing current. This kind of current could make a very active current in the water which is suitable for the habitat of Malalugis. This distinctiveness of current was considered as a trigger for relatively high abundance of Malalugis in this area compared to its </em><em>abundance in other water body of Indonesian territory. In 2012, total catch of this species has been reported to be decreased; thismay caused by either high level of exploitation nor changing on its habitat or even both. This study was conducted to investigate the capability of ecosystem and habitat of Malalugis to support its sustainability.</em></p>

scholarly journals PERBEDAAN PENGGUNAAN INTENSITAS CAHAYA LAMPU TERHADAP HASIL TANGKAPAN BAGAN APUNG DI PERAIRAN SELAT ROSENBERG KABUPATEN MALUKU TENGGARA KEPULAUAN KEI

2010 ◽  
Vol 6 (3) ◽  
pp. 134
Author(s):  
Notanubun Julianus ◽  
Wilhelmina Patty
Keyword(s):  
Light Intensity ◽  
Pelagic Fish ◽  
Light Distribution ◽  
Fishing Gear ◽  
Small Pelagic Fish ◽  
Fish Size ◽  
Number Of Species ◽  
Light Intensities ◽  
Size Number

One of potential fishing grounds for small pelagic fish in Southeast Mallucas Regency is Rosenberg Strait waters. In this region, a study on the effect of different light intensities of floating lift net on fish catches was carried out. The analyses were done on light distribution of 4 light intensities different: Petromaks Lamp and Underwater Lamps of each 18 watt, 36 watt and 54 watt. This study showed that catches of floating lift net using different light intensities were statistically significantly different. The use of 36 watt and 54 watt underwater lamp yielded the same amount of catches but higher than that of 18 watt-underwater lamp and petromaks, both in number and species. Catches consisted of 17 species, 16 fishs and 1 mollusca. Number of species and size also varied with light intensity used. There were 13 fishs species dominated by Stolephorus indicus as much as 46.9 kg or 22% for petromaks catches, 14 fishs species dominated by Rastrelliger kanagurata as much as 64 kg (31%) for 18 watt underwater lamp, 17 fishs species dominated by Rastrelliger kanagurata as much as 76 kg (28%) for 36 watt underwater lamp, and 15 fishs species dominated by Stolephorus devisi as much as 54.8 kg (22%) for 54 watt underwater lamp, respectively. Based on the results, it is recommended that the use of light intensity in fishing operations of floating lift net should be 36 watt and 54 watt underwater lamps, due to high catches, both in number and species. Beside that, since light fishing has also caught illegal fish size, number of this fishing gear type should be controlled.

scholarly journals KELIMPAHAN ZOOPLANKTON DAN BIOMASSA IKAN TERI (Stolephorus spp.) PADA BAGAN DI PERAIRAN KWATISORE TELUK CENDERAWASIH PAPUA (Abundance of Zooplankton and Biomass of Anchovy (Stolephorus spp.) of Liftnet at Kwatisore Bay, Cendrawasih Gulf, Papua)

2016 ◽  
Vol 6 (2) ◽  
pp. 143
Author(s):  
Amelian Dinisia ◽  
Enan M. Adiwilaga ◽  
. Yonvitner
Keyword(s):  
National Park ◽  
Fish Larvae ◽  
Pelagic Fish ◽  
Zooplankton Biomass ◽  
Fishing Gear ◽  
Important Food ◽  
Small Pelagic Fish ◽  
Park Area ◽  
Almost All ◽  
Euterpina Acutifrons

ABSTRACT<br /><br />Millions of organisms can be found in the Cenderawasih Gulf National Park area, especially in the waters of the Kwatisore Bay, Nabire and has been well-known to almost all over the world. Large zooplankton is an important food for migrated fish larvae and all kinds of fish including anchovies. Anchovy is the food of large and small pelagic fish groups. Groups of fish that use plankton as food were included anchovy. The main catch product of lift net at the Kwatisore bay is anchovy (Stolephorus spp.). This study aims to assess the level of availability of anchovy in relation to the abundance of zooplankton as food and to analyze the influence of anchovy fishing activities with lift net fishing gear. The results were obtained 51 species of zooplankton, which consists of 44 types holoplankton and 7 types of meroplankton. There were 17 species of zooplankton were found in the stomach of anchovy with the subgroup dominated by copepods (73.51 %). Among 17 species of zooplankton there 2 types that were found in all four sampling periods, namely Calanus sp. 2 and Euterpina acutifrons. There is a relationship between the abundance of individual zooplankton in the waters of the anchovy biomass and also between the abundance of zooplankton and biomass of anchovy.<br /><br />Keywords: abundance of zooplankton, biomass of anchovy, lift net at Kwatisore<br />-------<br /><br />ABSTRAK<br /><br />Jutaan organisme dapat ditemukan dalam kawasan Taman Nasional Teluk Cenderawasih khususnya di perairan Kwatisore, Nabire dan telah terkenal sampai hampir ke seluruh dunia. Zooplankton berukuran besar merupakan makanan penting bagi ikan-ikan yang bermigrasi dan larva semua jenis ikan termasuk didalamnya ikan teri. Ikan teri merupakan makanan dari kelompok ikan pelagis besar dan kecil. Kelompok ikan-ikan yang banyak memanfaatkan plankton dari kelompok ikan pelagis kecil diantaranya ikan teri. Hasil tangkapan utama bagan penangkap ikan pelagis kecil di perairan Kwatisore ialah jenis teri (Stolephorus sp.). Tujuan penelitian ini adalah untuk mengkaji tingkat ketersediaan ikan teri dalam kaitannya dengan kelimpahan zooplankton sebagai makanannya serta menganalisis pengaruh dari aktivitas penangkapan ikan teri dengan alat tangkap bagan. Secara keseluruhan dari seluruh stasiun dalam setiap periode sampling, diperoleh 51 jenis zooplankton yang terdiri atas 44 jenis holoplankton dan 7 jenis meroplankton. Terdapat 17 jenis zooplankton yang ditemukan dalam lambung ikan teri dengan didominasi oleh Sub-grup Copepoda (73,51%). Diantara ke-17 jenis zooplankton tersebut terdapat 2 jenis yang ditemukan pada keempat periode sampling yaitu Calanus Sp.2 dan Euterpina acutifrons. Hasil analisis regresi linier antara biomassa ikan teri hasil tangkapan bagan dan kelimpahan maupun antara biomassa ikan teri hasil tangkapan bagan dan jumlah jenis zooplankton menunjukkan adanya korelasi positif.<br /><br />Kata kunci: kelimpahan zooplankton, biomassa ikan teri, bagan di Kwatisore

scholarly journals DINAMIKA PERIKANAN PAYANG DI PERAIRAN UTARA KARAWANG DAN SEKITARNYA

2019 ◽  
Vol 25 (4) ◽  
pp. 253
Author(s):  
Mohamad Adha Akbar ◽  
Mufti Petala Patria
Keyword(s):  
Sustainable Management ◽  
Field Survey ◽  
Weather Conditions ◽  
Pelagic Fish ◽  
Environmental Data ◽  
Fishing Gear ◽  
Small Pelagic Fish ◽  
Business System ◽  
Daily Scale

Perikanan skala kecil terutama perikanan payang merupakan salah satu tulang punggung mata pencaharian masyarakat pesisir di perairan Karawang, Jawa Barat. Peran nyata aktivitas perikanan pada keanekaragaman sumberdaya hayati laut adalah memanfaatkan sumberdaya hayati perairan laut di kawasan pesisir dengan kondisi kelimpahan sumberdaya ikan yang cenderung berfluktuasi pada tingkat yang relatif rendah. Penelitian dilakukan melalui survey lapang pada kurun waktu Agustus – Nopember 2018 dengan basis data hasil tangkapan dan upaya penangkapan pada rentang waktu 2016-2018. Beberapa data lingkungan terkait ragam keadaan cuaca yang digambarkan oleh data curah hujan, arah dan kecepatan angin digunakan untuk menggambarkan siklus adaptasi nelayan untuk mempertahankan mata pencariannya. Aktivitas penangkapan menggunakan perahu dengan tonase <10 GT dan rerata kekuatan mesin sekitar 20 PK, beroperasi dalam skala harian dengan alat penangkapan ikan utama adalah jaring payang. Perkembangan tahunan indeks kelimpahan sumberdaya ikan dengan alat tangkap payang pada kurun waktu 2004-2008 dan 2015-2018 cenderung menurun. Tahun 2004 nilai indeks kelimpahan sumberdaya ikan sebesar 268 kg/trip menjadi 199 kg/trip pada 2008 dan terus menipis menjadi sebesar 115 kg/trip tahun 2018. Hal ini mengindikasikan usaha perikanan cenderung berada pada kondisi tidak berkelanjutan bila tidak dilakukan pengelolaan. Keberlanjutan usaha perikanan masih dapat diharapkan jika dilakukan perubahan terhadap sistem usaha yang lebih bersifat menjadi gabungan individu perahu yang berukuran kecil menjadi usaha kelompok dengan perahu yang berukuran lebih besar diatas 10 GT dengan daerah penangkapan yang lebih jauh.One day pelagic seine (payang) fisheries, is one of the backbones of coastal community livelihoods in North Karawang waters, West Java. The significant role of fisheries activities to harvest small pelagic fish resource in coastal areas indicated that the monthly CPUE tend fluctuated and stabil at low level. The study was conducted through a field survey in the period August - November 2018 with a database of catches and efforts from 2016-2018. Some environmental data related to various weather conditions illustrated by rainfall data, wind direction and speed are used to describe the adaptation cycle of fishermen to maintain their livelihoods. Fishing activities using boat with tonnage <10 GT and average engine strength of around 20 PK, operating on a daily scale with the main fishing gear is payang net. The average annual catch per trip (CPUE) of payang fisheries within period of 2004-2008 to 2015-2018 tend to decrease. In 2004 the CPUE was 268 kg/trip then 2008 at 199 kg / trip, and continue to lower index in 2018 of 115 kg / trip. This indicates that the fishery business is suspected to be in an unsustainable condition if no sustainable management is carried out. Sustainability of the fisheries business can still be expected if changes are made to the business system which is more a combination of individual small-sized boats into group businesses with boats larger than 10 GT with more distant fishing grounds.

scholarly journals Characteristics of purse seine fisheries in the Sulawesi Sea (case study in Tumumpa fishing port)

2021 ◽  
Vol 919 (1) ◽  
pp. 012016
Author(s):  
Baihaqi ◽  
Mahiswara ◽  
T W Budiarti
Keyword(s):  
Data Collection ◽  
Fork Length ◽  
Pelagic Fish ◽  
Purse Seine ◽  
Fishing Gear ◽  
Small Pelagic Fish ◽  
Fishing Season ◽  
Fish Resources ◽  
Pelagic Fishing

Abstract The purse seine is the dominant fishing gear operating at the Tumumpa Fishing Port with a vessel of >90%. The purse seines that have developed are large pelagic targets, with the main catch targets being skipjack, mackerel tuna, and tuna. Tuna, mackerel tuna and skipjack are important commodities for fisheries in Indonesia. This study aims to determine the characteristics of purse seine fishing gear and its catch in the Sulawesi Sea. Data collection was carried out for two years from 2019-2020 at Tumumpa Fishery Port. Indications for the use of fish resources are calculated by comparing the length-at-first-capture (Lc) with the length-at-first-mature (Lm). The results showed that purse seines are very dominant in exploiting large pelagic resources (skipjack, mackerel tuna and tuna) with the proportion reaching 78%, small pelagic (21% scads and 1% other fish). The large pelagic fishing season using the purse seine vessel occurs in May – November, with 2 peak seasons in July and September. While the small pelagic occurs in May – September, with the peak occurring in July. The size when the frigate tuna was first caught was at a fork length of 25.15 cm (Lc) and Lm in a size of 28.52 cm for females and 28.29 cm for males. Meanwhile, the first scads was caught (Lc) at a length of 21.4 cm with the length-at-first-mature (Lm) being 20 cm for the female and 19 cm for the male. Based on this analysis, it was shown that the purse seines is a selective fishing gear for small pelagic fish but not selective for large pelagic fish.

scholarly journals Utilization Of Underwater Submersible Light Led To Fish Swimming Activity On Fixed Liftnet Operated In Mangrove

2020 ◽  
Vol 13 (2) ◽  
pp. 493-499
Author(s):  
Husni Angreni ◽  
Ibnu Malkan Hasbi ◽  
Jumrawati Jumrawati
Keyword(s):  
Operating Time ◽  
Demersal Fish ◽  
Pelagic Fish ◽  
Assistive Technologies ◽  
Swimming Activity ◽  
Fishing Gear ◽  
Fish Swimming ◽  
Small Pelagic Fish ◽  
The Subject ◽  
Large Groups

Fixed chart fishing focuses on utilization of light aids for attract fish. Underwater submersible light ((Lacuda) LED is one of the assistive technologies that are environmentally friendly, be the subject of study in determining the characteristics of the movement or fish swimming groupings based on the operating time of the fishing gear and can be detected by hydroacoustic devices. The research method used is descriptive exploratory method by participating in fishing operations in the waters of Laikang Bay from April to September 2020. The results of the observations made at 18:00-05:00 Wita every trip shows that fish swimming activity after midnight tends to be higher than before midnight and at midnight. Based on the hydroacoustic detection of fish swimming activity in the form of solitary, medium and large groups at an average depth of 2-6 meters at 03:00-05:00 Wita. The amount of catch in hauling I is 138,4 Kg while hauling II is 157,3 Kg. The type of catch is small pelagic fish and demersal fish.

scholarly journals RANCANG BANGUN DAN UJI COBA ALAT PEMANGGIL IKAN “PIKNET” UNTUK ALAT TANGKAP JARING INSANG

2018 ◽  
Vol 9 (2) ◽  
pp. 199
Author(s):  
Nurul Rosana ◽  
. Suryadhi ◽  
Safriudin Rifandi
Keyword(s):  
Pelagic Fish ◽  
Average Weight ◽  
Fishing Gear ◽  
Sound Waves ◽  
Small Pelagic Fish ◽  
Test Analysis ◽  
Chicken Feathers ◽  
Device Model ◽  
Fish Aggregation ◽  
Paired T Test

<p align="center"><strong><em>ABSTRACT</em></strong><strong><em></em></strong></p><p class="Abstractisi">Gillnet is one of the fishing gear used by Indonesian fishermen especially in East Java, with the target of small pelagic fish. The use of gillnet needs an innovation which can help fishermen to increase their catchment, namely by using Fish Aggregation Device (FAD). The objective of the research is to make a fish caller device model using sound waves that are operated on the gillnet and looking its effectiveness by conducting trials in the water. The fish caller is made using sound waves at the frequency between 500-1000 Hz, and named as Piknet (Pemanggil ikan gillnet).  The Piknet dimension after waterproof packed  is 20 cm long x 8.5 cm wide x 6.5 cm high.   The type of fish caught in this research was chicken feathers (Thryssa setirostris) with an average weight of 27.6 kg/per trip in piknet trial while without using Piknet is 17.7 kg/trip. The result of paired t-test analysis presented that there was a significant value of 0.016.   </p><p class="TubuhTulisanAll"><strong><em>Keywords:</em></strong><strong><em> </em></strong><em>sound, frequency, gillnet, piknet</em><em></em></p><p align="center"><strong>ABSTRAK</strong></p><p class="Abstrakisi">Jaring insang adalah jenis alat tangkap ikan yang digunakan oleh nelayan di Indonesia dan Jawa Timur khususnya, dengan target tangkapan ikan pelagis kecil.  Penggunaan alat tangkap jaring insang memerlukan inovasi yang dapat membantu nelayan untuk meningkatkan hasil tangkapan, yaitu dengan menggunakan alat bantu pengumpul ikan.  Tujuan penelitian adalah membuat model alat pemanggil ikan berbasis gelombang bunyi yang dioperasikan pada jaring insang dan mengetahui efektivitasnya dengan melakukan uji coba di perairan.  Alat pemanggil ikan dibuat dengan menggunakan gelombang bunyi berfrekuensi antara 500-1000 Hz, dan diberi nama Piknet (Pemanggil ikan <em>gillnet</em>).  Dimensi Piknet setelah dikemas kedap air adalah memiliki panjang 20 cm x lebar 8,5 cm x tinggi 6,5 cm. Jenis ikan yang diperoleh pada uji coba ini adalah bulu ayam (<em>Thryssa setirostris</em>) dengan rata-rata jumlah hasil tangkapan 27,6 kg/trip, sedangkan tanpa menggunakan “Piknet” sebesar 17,7 kg/trip.  Hasil analisis uji-t berpasangan diperoleh hasil nilai signifikansi sebesar 0.016..</p><strong>Kata kunci:</strong> bunyi, frekuensi, jaring insang, piknet

scholarly journals Pengaruh Perbedaan Ukuran Jaring Insang Terhadap Hasil Tangkapan Ikan Tongkol Euthynnus sp. di Perairan Tenggara Kabupaten Karangasem

2021 ◽  
Vol 4 (2) ◽  
pp. 16
Author(s):  
Dwi Nindra Saputra ◽  
I Wayan Gede Astawa Karang ◽  
Ni Luh Putu Ria Puspitha
Keyword(s):  
Pelagic Fish ◽  
Fishing Gear ◽  
F Test ◽  
Tuna Fish ◽  
Anova Test ◽  
Gill Nets ◽  
Gill Net ◽  
Sphyraena Barracuda ◽  
The Difference

Tuna is one of the main catching commodities in the waters of Southeast Karangasem. Fishers in the Southeast waters of Karangasem used drift gillnet operations to find pelagic fish such as mackerel. This study aims to determine the composition of fish catches using different net sizes and determine the effect of different gill nets on the catch of tuna fish in the southeast waters of the Karangasem Regency. The study was conducted for one month from mid-October to mid-November 2017 by following fishers' fishing trips. The fishing gear used was gill nets with differences, namely 2' 2.5 and 3 inches. The data was taken directly by operating the gill net, which has three different mesh sizes then the data was analyzed by ANOVA. Based on the research found four types of fish, namely Tuna (Euthynnus sp.), ikan kembung (Restrelliger kanagurta), barracuda (Sphyraena barracuda), and Manta sp. with details on 2.5 sized nets, three species (cobs, mackerel, barracuda), while sediment nets with a size of 2 (tuna and mackerel), and 3 (tuna and manta rays). Each gets two types of fish. Based on the ANOVA test, the calculated F results in this study are (7.7608) and F table (3.4668). The difference in the size of the gill nets significantly affects the catch of tongkol fish. The F test value shows that the F count was greater than the F table.

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