scholarly journals Analisis Komposisi Hasil Tangkapan Bagan Perahu Dan Tancap Di Perairan Teluk Kupang

2021 ◽  
Vol 10 (1) ◽  
pp. 117-122
Author(s):  
Joi Alfreddi Surbakti ◽  
Rikka Welhelmina Sir
Keyword(s):  
Fork Length ◽  
Mesh Size ◽  
Tail Length ◽  
Survey Method ◽  
Fishing Gear ◽  
Body Width ◽  
Fish Resources ◽  
Straight Line ◽  
Dominant Fish ◽  
Fish Catch

Salah satu masalah yang dihadapi dalam pemanfaatan sumberdaya ikan adalah kurang selektifnya berbagai jenis alat tangkap yang digunakan oleh para nelayan. Akibatnya adalah tertangkapnya ikan-ikan yang bukan menjadi tujuan penangkapan (bycatch) yang dalam prakteknya sebagian besar ikan-ikan tersebut dibuang ke laut (discarded catch). Penelitian ini bertujuan untuk mengidentifikasi dan menginventarisasi komposisi jenis dan ukuran ikan hasil tangkapandari alat tangkap bagan perahu dan bagan tancap.Lokasi penelitian di Kelurahan Oesapa sebagai sentra pemukiman nelayan bagan perahu danbagan tancap di Kota Kupang dan di Perairan Teluk Kupang.Penelitian ini dilakukan menggunakan metode survei dengan obyek penelitian yaitu: fakta, proses, histori, persepsi tentang perikanan bagan perahu, komposisi jenis dan ukuran ikan tangkapan yang meliputi identifikasi hasil tangkapan, berat (kilogram), jumlah (ekor), panjang cagak (fork length), keliling maksimum (maximum girth), dan lebar badan ikan. Cara mengukur panjang baku pada penelitian ini yaitu jarak garis lurus antara ujung bagian kepala yang paling depan (biasanya ujung salah satu dari rahang yang terdepan) sampai ke pelipatan pangkal sirip ekor.Hasil menunjukkan bahwa jenis ikan yang dominan tertangkap pada bagan perahu adalah ikan teri, peperek dan kembung, sedangkan pada bagan tancap ikan peperek, teri dan tembang. One of the problems faced in using fish resources is the lack of selectivity of various types of fishing gear used by fishermen. The result is the catch of fish which is not the purpose of arrest(bycatch) which in practice most of the fish are discarded catch. This study aims to identify and inventory the type and size offish catches (boat lift net and fix lift net). Research location in Oesapa village in Kupang City in Kupang Bay. This research was conducted by survey method with research object that is: fact, process, history, perception of fishery boat lift net, species composition and size of fish catch including identification of catch, weight (kilogram), number (tail), length of fork length, maximum girth, and fish body width, mesh size. The method of measuring the standard length in this study is the distance of a straight line between the tip of the front of the head (usually the tip of one of the leading jaws) to the tail fin's base. The results show that the dominant fish species in boat lift net are anchovies, pony fishes, and long-jawed mackereland, from fix lift net, are pony fishes, anchovy and sardine. 

scholarly journals Ancaman keanekaragaman hayati (Biodiversity) terhadap ekosistem daerah penangkapan pukat hela

2020 ◽  
Vol 7 (2) ◽  
pp. 129
Author(s):  
Fauzan Ramadan ◽  
Farhan Ramdhani ◽  
Deni Efizon ◽  
Nofrizal Nofrizal
Keyword(s):  
Coastal Waters ◽  
Negative Impact ◽  
Mesh Size ◽  
Survey Method ◽  
Fishing Gear ◽  
Fish Resources ◽  
Fisheries Resources ◽  
Trawl Fishing ◽  
Penaeus Indicus ◽  
By Catch

Trawl has the size a mesh size  a small size pockets of the cod end. This allows the trawl fishing gear to potentially be a fishing gear that is not selective about the size of the fish and the species that are targeted for its catch. If this fishing gear is left, its existence will eventually have a negative impact on the sustainability of fish resources, especially in coastal waters. The purpose of this study is to calculate the composition and proportion of main catches, bycatch and discarded catches. It is expected that knowing the composition and proportion of the main, by-product and discarded catches can provide an overview of the pressure on stocks and sustainability of fisheries resources in the waters where trawl is operated. The method used in this study is a survey method. A series of survey activities were carried out directly in the field to identify and count the types of species caught by trawlers. Based on the percentage of main catch, by-catch and discard per type, it Matuta planipes are the dominant species caught by trawlers (23.65%). The main catch Parapenaeus longirostris 15.92%. In addition, the main catch caught were Parapenaeopsis sculptilis (9.787%), Penaeus merguiensis (0.646%), Metapenaeus brevicornis (10.118%), Penaeus indicus (0.029%) and Squilla mantis (0.153%). Percentage of bycatch reaches 2.245% of 10 species caught and discarded catches reach 61.103% of 25 species caught.

scholarly journals Selectivity of Gillnet to Catch Silver Pomfret (Pampus argenteus) in Pangandaran Waters, Indonesia

2021 ◽  
pp. 7-14
Author(s):  
Izza Mahdiana Apriliani ◽  
Herman Hamdani ◽  
Yuniar Mulyani ◽  
Heti Herawati ◽  
Dear Frans Lyandre Simanjorang
Keyword(s):  
Coastal Waters ◽  
Length Distribution ◽  
Fork Length ◽  
Mesh Size ◽  
Primary Data ◽  
Fishing Gear ◽  
West Java ◽  
Class Interval ◽  
Pampus Argenteus ◽  
Silver Pomfret

The purpose of this research was to determine the most selective mesh size of gillnet fishing gear for Pampus argenteus in coastal waters of Pangandaran Regency, West Java. Research on the selectivity of gillnet fishing gear was carried out in the coastal waters of Pangandaran, West Java Province, from August 2018 to January 2019. The method used in this research is experimental fishing, namely operating gillnet fishing gear directly in the fishing area with fishermen. The primary data collected was the measurement of the catch (fish weight, number, fork length, how the fish was caught, circumference (girth opercullum, maximum body girth). Meanwhile, the secondary data collected were supporting data from the Pangandaran District Fisheries and Marine Service, and literature study. In determining the sampling, the method used is the purposive sampling method. The operation of gillnets using 4.5 inches obtained a higher proportion of main catch (75%) than gillnets with a mesh size of 5 inches (44%). Gillnet with a mesh size of 4.5 inches, the silver pomfret caught was distributed between 17-22 cm in size with the highest mode in the 19 cm fork length. Unlike the gillnet fishing gear with a mesh size of 5 inches, the silver pomfret caught was distributed in the fork length range of 17-25 cm with the highest mode in the length class 19 cm fork length. mesh size 4.5 inches has a hanging ratio value of 0.51. Meanwhile, the 5 inch mesh size has a hanging ratio value of 0.54. Based on the length distribution, gillnets with a mesh size of 5 inches were more dominant in catching silver pomfret in a larger size class interval than gillnets with a mesh size of 4,5 inches. Based on the L50 value, both selective gillnets caught more fish at 50% second chance. The selectivity curve shows that gillnet fishing gear with a mesh size of 5 inches has more selective results than gillnets with a mesh size of 4.5 inches. 

scholarly journals STATUS KEBERLANJUTAN PERIKANAN BAGAN PERAHU BERBASIS BIO-EKONOMI DI DESA TONIKU KABUPATEN HALMAHERA BARAT

2019 ◽  
Vol 11 (1) ◽  
pp. 181-190
Author(s):  
Irwan Abdu Kadir ◽  
Adi Noman Susanto ◽  
Amirul Karman ◽  
Iinpuspita Ode Ane
Keyword(s):  
Fish Larvae ◽  
Economic Value ◽  
Survey Method ◽  
Fishing Gear ◽  
Economic Aspects ◽  
Study Objective ◽  
Study Results ◽  
Fish Catch ◽  
Business Profit ◽  
By Catch

ABSTRAKNelayan di Desa Toniku Kabupaten Halmahera Barat, awalnya menggunakan bagan perahu untuk menangkap ikan teri Stolephorus sp. sebagai umpan perikanan pole and line, akan tetapi pada saat ini banyak tertangkap selain teri yaitu juvenil dan larva ikan, ini permasalahan yang perlu dikaji komposisi tangkapan dari bagan perahu. Tujuan penelitian  adalah  menganalisis komposisi tangkapan, by-cacth, discard, dan aspek ekonomi. Penelitian  dilaksanakan di perairan desa Toniku Kabupaten Halmahera Barat, dari tanggal 1 sampai 9 Juni 2018. Metode penelitian adalah metode survei. Obyek penelitian yaitu ikan hasil tangkapan bagan perahu. Hasil penelitian menunjukkan bahwa tangkapan bagan perahu didominasi oleh ikan target tangkap, yaitu; ikan teri (Stolephorus sp) sebesar 86,295%, tangkapan sampingan  12,335% dan tangkapan yang dibuang 1,370%. Tangkapan sampingan didominasi ikan  peperek (Leiognatus sp) yaitu 5,575%. Nilai keuntungan Usaha bagan perahu sebesar Rp 93.047.200,00/tahun dengan B/C ratio 2,96. Berdasarkan perbandingan antara target tangkap dengan by-catch dan discard, bagan perahu di Desa Toniku Kabupaten Halmahera Barat dikategorikan alat tangkap ramah lingkungan dan secara finansial menguntungkan dan layak dikembangkan (berkelanjutan). Walaupun discard rate pada bagan perahu rendah namun usaha-usaha untuk meminimumkan tetap perlu dilakukan. Salah satu usaha yang bisa dilakukan adalah sortir, dan hasil tangkapan yang tidak memiliki nilai ekonomis dibuang ke laut dalam keadaan masih hidup. ABSTRACTFishermen in Toniku Village, West Halmahera Regency, initially used a boat lift net to catch anchovy Stolephorus sp. As bait for pole and line fisheries, but at this time many were caught besides anchovy, namely juvenile and fish larvae, these are problems that need to be studied from the boat lift net. The study objective was to analyze the composition of catchs, by-catch, discard, and economic aspects. The research was carried out in the waters of Toniku village, West Halmahera Regency, from June 1 to 9, 2018. The study method is the survey method. The object of the research is the fish catch by the boat lift net. The study results show the catch of the boat's lift net was dominated by main catch, namely; anchovy (Stolephorus sp) is 86.295%, by-catch 12.335% and discard 1.370%. The bay-catch  is dominated by peperek (Leiognatus sp) which is 5.575%. Value of the boat lift net business profit of Rp. 93,047,200.00/year with B/C ratio 2.96. Based on the comparison between catch targets and by-catch and discard, the boat lift net in Toniku Village, West Halmahera Regency is categorized as environmentally friendly and financially profitable and feasible (sustainable) fishing gear. Although the discard rate on the boat chart is low, efforts to minimize it still need to be done. One effort that can be done is sorting, and catches that have no economic value are dumped into the sea while still alive.

scholarly journals The Selectivity of Purse Seine Againt Euthynnus affinis Catch in PPN Muara Angke Jakarta

2021 ◽  
pp. 18-26
Author(s):  
Donny Samudra ◽  
. Junianto ◽  
Dedy Supriadi ◽  
Izza M. Apriliani ◽  
Alexander M. A. Khan
Keyword(s):  
Random Sampling ◽  
Fork Length ◽  
Secondary Data ◽  
Purse Seine ◽  
Primary Data ◽  
Survey Method ◽  
Fishing Gear ◽  
Fishing Vessel ◽  
Purposive Sampling ◽  
Euthynnus Affinis

Purse seine is one of the fishing gear that has been used by PPN Muara Angke fisher to catch pelagis fish. The selectivity of purse seine was still being researched until now . This research was conducted  determine the selectivity of purse seine fishing gear with parameter the length of Euthynnus affinis, weight and numbers catch on purse seine fishing gear landed in PPN Muara Angke. The research used a survey method with quantitative descriptive analysis. The sampling method used in this was purposive sampling and random sampling. The data collected during the research were primary data and secondary data. Primary data included the number and weight of catches, fork length of Euthynnus affinis from five purse seine fishing vessel in PPN Muara Angke. Secondary data included production data of purse seine catches from 2015-2019 and vessel data obtained from Central Port Management Unit Jakarta and PPN Muara Angke. Purposive sampling used for the number of catch, weight of catch, production of purse seine catch from 2015-2019 and purse seine fishing vessels data. Random sampling used for fork length Euthynnus affinis fish, 250 samples were taken randomly on one purse seine fishing vessel. The research results pusre seine fishing gear which was landed at PPN Muara Angke was not selective due to the percentage length of the Euthynnus affinis was worth, proportion of amount and weight less than 60%.

scholarly journals Study of potential fish resources in senayang waters, Lingga district

2020 ◽  
Vol 5 (1) ◽  
Keyword(s):  
Demersal Fish ◽  
Average Level ◽  
Survey Method ◽  
Fishing Gear ◽  
Total Production ◽  
Fish Stocks ◽  
Fish Resources ◽  
Continuous Potential ◽  
The Government

One of the problems in the conservation of demersal fish in Senayang waters is that there are still many trawlers, which used the small mesh-sized net that will negatively impact the sustainability of fish resources. This study aims to determine the potential sustainability of fish resources by using the analysis of the catches of fishermen landed at TPI Senayang and information from fishing gear in the area. The study used a survey method through trawlers observation by interviewing trawlers, then analyzed descriptively. The continuous potential was calculated using the Schaeffer method. The trawlers used mesh sizes of 1.5inches on average. Schaeffer's analysis shows that the total production of catches of 854.07tons by operating trawlers as much as 831 times this operation alone actually does not support the potential of sustainable and unsustainable fish resources. Based on the results of an analysis of the number of fishing operations and the total production of fish caught shows that there are many seine fishing operations, it is not accompanied by an increase in the total amount of catch production. The average level of potential utilization of Senayang waters has reached 80.47%, which means that the use of trawlers in Senayang waters no longer supports the conservation of demersal fish. In the management of demersal fish fisheries in Senayang waters, the government must regulate the size of fish that can be caught, namely by limiting the size of the net mesh on trawlers, and in its operation, there must be strict supervision so that this rule is implemented consistently. Besides, to prevent the level of utilization that can interfere with the preservation of fish stocks in the Senayang waters, zoning needs to be made and regulated to set a sustainable catch quota.

scholarly journals Determination of gill-net selectivity for King Fish (Scomberomorus Commerson, Lacepede 1800) using Mesh size in Sungailiat, Bangka Belitung Province

2021 ◽  
Vol 16 (4) ◽  
Author(s):  
Pareng Rengi ◽  
Polaris Nasution ◽  
Arthur Brown ◽  
Ayu Nita Ervina Tambunan
Keyword(s):  
Standard Deviation ◽  
Population Distribution ◽  
Fork Length ◽  
Mesh Size ◽  
Fishing Gear ◽  
Gill Net ◽  
Scomberomorus Commerson ◽  
L Value

Selectivity is a fishing gear characteristic capable of catching fish of a specific size and species from the existing population distribution. Mesh size is one of the important factors that influence gillnets’ selectivity, because different length-classes of fish are caught by them. This report focuses on the selectivity of two mesh sizes of gillnets (8.89 cm and 10.16 cm) on mackerel's catch and constructing a gillnet in Sungailiat waters. Experimental fishing methods and selectivity analysis were used for the fishing gear’s more selective preparation, if the largest fishing ratio's value at the fork length (L) is high and the standard deviation value (S) is closer to 1. It is concluded that to be more selective a largest S (L) value of 0.999267194 at fork length (L=54.95 cm), and with a larger value of S (L) 0.997096071 and with (L=66.55 cm) for mesh Sizes 8.89 cm and 10.16 cm, respectively.

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 Gillnet Selectivity on the Narrow-barred Spanish Mackerel (Scomberomorus commerson) Fishery in Pangandaran Waters

2021 ◽  
pp. 13-19
Author(s):  
Izza Mahdiana Apriliani ◽  
Lantun P. Dewanti ◽  
Herman Hamdani ◽  
Soraya Gigentika ◽  
Rachmad Cesario ◽  
...  
Keyword(s):  
Coastal Waters ◽  
Length Distribution ◽  
Fork Length ◽  
Mesh Size ◽  
Fishing Gear ◽  
Length Frequency ◽  
Class Interval ◽  
Spanish Mackerel ◽  
Selectivity Curve ◽  
Scomberomorus Commerson

Analyzing the selectivity of gillnet fishing gear using two different mesh sizes, namely 3.5 and 4 inches. Gillnets of these mesh sizes are commonly used by fishermen in Fish Landing Base (PPI) Cikidang, Pangandaran Regency, West Jawa. A total of 8 fishing trips were conducted at the coastal waters around PPI Cikidang, Pangandaran Regency, West Java from August 2018 to January 2019  using gillnet fishing gear As for each trip, 2-3 times the operation of the tool is carried out. The operation of the fishing gear is carried out with the help of vessels measuring 2-3 Gross Tonnage (GT). The catch obtained was differentiated based on the main catch and bycatch and the amount is calculated for analysis of the proportion of the catch. Mackerel (Scomberomorus commerson) is caught as the main catch, the fork length was measured for analysis of the length frequency distribution and selectivity curves. The operation of gillnets with a mesh size of 3.5 inches obtained a higher proportion of bycatch compared to gillnets with a mesh size of 4 inches. In addition, the length distribution of mackerel caught by gillnets with a mesh size of 3,5 inches is smaller (27-49 cm FL) compared to a mesh size of 4 inches (40-55 cm FL). Based on the distribution of length distribution, gillnets with a mesh size of 3.5 inches are more dominant in catching mackerel in a smaller size class interval than gillnets with a mesh size of 4 inches. Meanwhile, based on the selectivity curve for the length of mackerel with a 50% chance of being caught, it shows that gillnets with a mesh size of 3.5 or 4 inches are selective in catching mackerel, this is because the chances of catching fish at more than L50 are high.

scholarly journals Capture Fishery Resources of Citanduy River, West Java

2021 ◽  
Vol 934 (1) ◽  
pp. 012076
Author(s):  
S Sawestri ◽  
N K Suryati ◽  
D Muthmainnah ◽  
Y P Pamungkas
Keyword(s):  
Local Community ◽  
Survey Method ◽  
Fishing Gear ◽  
West Java ◽  
Protein Food ◽  
Fish Resources ◽  
Fisheries Resources ◽  
Potential Source ◽  
Secondary Sector ◽  
Channa Striata

Abstract Citanduy river is one of the priority watersheds in West Java. Information on capture fisheries resources in Citanduy, however, river is limited. The aim of this study was to assess the information of capture fisheries resources in that river. The method used in this study was a survey method, by collecting data in the field, and then analyzed it in the laboratory. This research was conducted in 2018. Samples of fish were collected through the active participation of fishers with various types of fishing gear. The identification of fish and fishing gear used some references. Some fish caught were preserved in formalin solution and identified. The dominant catch in Citanduy River is Mystacoleucus marginatus and Cyprinus carpio. Other economic fishes catch in Citanduy river are Oreochromis niloticus, Osteochilus vittatus, O. mossambicus, Trichogaster trichopterus, Hemibragus nemurus, Hampala macrolepidota, Channa striata, Moolgarda seheli, and Glossogobius giurus. The fishing gears used by fishers are hooks and lines, cast nets, scope nets, traps, and gill nets. The inland capture fishery in Citanduy river is still a secondary sector for the interests of local government.The current condition of capture fisheries in Citanduy is not the main livelihood for fishers. The inland capture fisheries in Citanduy is still using a simple fishing gear and do not have more complex tools. Citanduy river has potential source of economic and protein food, particularly for local community. Regarding in these potential, management of environment could be the major domains in fisheries management. The policy of local government in handling non-selective fishing gear and restocking activity could be maintain the sustainable fish resources in Citanduy river.

scholarly journals EFISIENSI TEKNIS DAN SELEKTIVITAS ALAT TANGKAP JARING INSANG (GILLNET) TERHADAP KOMPOSISI HASILTANGKAPAN DI PERAIRAN SEMARANG (Technical Efficiency and Selectivity of Fishing Gear Gillnet to Composition of Fish Capture in Semarang Water)

2018 ◽  
Vol 13 (2) ◽  
pp. 126
Author(s):  
Vatharany Liana Putri ◽  
Faik Kurohman ◽  
Aristi Dian Purnama Fitri
Keyword(s):  
Technical Efficiency ◽  
Significant Influence ◽  
Research Method ◽  
Mesh Size ◽  
T Test ◽  
Fishing Gear ◽  
Total Catch ◽  
Fish Resources ◽  
Gill Net

Pengoperasian Gill Net  akan berpengaruh terhadap stok sumberdaya ikan apabila tidak diatur dengan baik. Strategi manajemen sumberdaya ikan diperlukan agar optimalisasi hasil tangkapan dan kelestarian sumberdaya ikan tetap terjaga. Tujuan dari penelitian ini adalah untuk menganalisis nilai efisiensi teknis dan nilai selektivitas alat tangkap Jaring Insang (Gill Net ) terhadap komposisi hasil tangkapan. Metode penelitian yang digunakan adalah deskriptif bersifat studi kasus. Lokasi penelitian  di perairan Semarang. Obyek pengamatan adalah Gill Net .  Analisis data yang digunakan adalah uji Independent T-Test. Hasil Penelitian menunjukkan bahwa alat tangkap Gill Net  terdapat dua mesh size yaitu 1,4 inci dan 3,5 inci. Total hasil tangkapan Gill Net  dengan mesh size 1,4 inci sebesar 38.350 kg sedangkan Gill Net  dengan ukuran 3,5 inci sebesar 15.220 kg. Nilai efisiensi yang terdapat pada mesh size 1,4 inci adalah 30 sedangkan, mesh size 3,5 inci memperoleh poin sebesar 20. Berdasarkan pengolahan uji Independent T-test bahwa terdapat pengaruh signifikan antara komposisi hasil tangkapan Gill Net  terhadap mesh size 1,4 inci dan 3,5 inci. Kesimpulan yang diperoleh dari penelitian ini adalah status alat tangkap Gill Net  dengan mesh size 1,4 inci lebih efisien daripada mesh size 3,5 inci. The way to operation the Gill Net  will affect the stock of fish resources if not properly regulated. Strategy to manage the fish resources is needed to optimize amount of catch and create the sustainable fish resources. The aim of research was to analyze level of technical efficiency and selectivity Gillnets to the composition of the catches. The research method used case study on technical efficiency Gillnets in Semarang’s waters. The results of the research, Gillnets have two mesh size, 1.4 inch and 3.5 inch. Total catch of Gillnets with mesh size 1.4 inch was 38.350 kg while Gillnets catch with mesh size 3.5 inch was 15.220 kg. Based on independence T-test that there was significant influence between the composition of Gillnets catches to mesh size 1.4 inch and 3,5 inch. efficiency point with mesh size 1,4 inch was 30, whereas mesh size 3,5 inch obtained 20 point. The conclusion from this research is stat us of fishing gear Gillnets with mesh size 1,4 inch more efficient than mesh size 3,5 inch.

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