scholarly journals FAKTOR-FAKTOR PENTING YANG MEMPENGARUHI CPUE (Catch Per Unit Effort) PERIKANAN HUHATE BERBASIS DI BITUNG

2016 ◽  
Vol 22 (1) ◽  
pp. 43
Author(s):  
Agus Setiyawan ◽  
Lilis Sadiyah ◽  
Syarief Samsuddin
Keyword(s):  
Generalized Linear Model ◽  
Linear Models ◽  
Catch Per Unit Effort ◽  
Katsuwonus Pelamis ◽  
Fishing Vessels ◽  
Unit Effort ◽  
Landing Sites ◽  
Technical Factors ◽  
Live Bait ◽  
Logbook Data

<p>Bitung merupakan salah satu sentra pendaratan untuk perikanan huhate. Perikanan huhate bergantung terhadap ketersediaan umpan ikan hidup dan beberapa faktor teknis. Penelitian ini bertujuan untuk mengkaji faktor yang paling berpengaruh terhadap hasil tangkapan per upaya penangkapan (CPUE) ikan cakalang (<em>Katsuwonus pelamis - </em>SKJ). Pengambilan data primer dilaksanakan di atas kapal huhate dari Januari – Mei 2013 yang berbasis di Pelabuhan Perikanan Bitung – Sulawesi Utara. Data logbook kapal serta data harian kapal diperoleh pada saat melakukan pemancingan. Analisis data dilakukan dengan menggunakan analisis <em>Generalized Linear Models</em> (GLM), uji korelasi dan regresi sederhana. Hasil penelitian ini menunjukkan bahwa terdapat empat faktor signifikan berpengaruh terhadap nilai CPUE cakalang (SKJ). Faktor pertama adalah jenis umpan hidup yang digunakan berpengaruh secara signifikan terhadap CPUE SKJ (P&lt; 0,01). Jenis umpan hidup yang berpengaruh signifikan adalah jenis ikan layang dicampur dengan puri merah. Ketiga faktor lainya yaitu suhu permukaan laut (SPL), jumlah pemancing dan daerah penangkapan mempengaruhi CPUE SKJ dengan nilai P &lt; 0.05.</p><p><strong> </strong><em>Bitung is one of the main landing sites for pole and line fishing vessels. The<strong> </strong>pole and line fisheries depend on the availability of live fish bait and some technical factors. Objective of this study is to assess several factors that may influence catch per unit effort (CPUE) of skipjack (Katsuwonus pelamis – SKJ). Logbook data and record of daily vessel activities during fishing from January – May 2013 were used in the analysis. The data were analyzed using generalized linear model (GLM), correlation and regression. The results showed that type of live bait was significantly affect the SKJ CPUE (P&lt;0.01). Round scad (Decapterus spp) mixed with anchovy (Stelophorus spp) were giving higher SKJ CPUE as live bait. In addition, sea surface temperature, number of fishers, and fishing location also affect the SKJ CPUE with P &lt;0.05.   </em></p>

scholarly journals KARAKTERISTIK PERIKANAN TERI (ENGRAULIDAE) DI PANTAI UTARA JAWA-MADURA

2021 ◽  
Vol 26 (3) ◽  
pp. 135
Author(s):  
ACHMAD ZAMRONI ◽  
Heri Widiyastuti ◽  
Suwarso Suwarso
Keyword(s):  
North Coast ◽  
Small Scale ◽  
Fishing Gear ◽  
Eastern Region ◽  
Northern Coast ◽  
Catch Per Unit Effort ◽  
Fishing Season ◽  
The North ◽  
Fishing Vessels ◽  
Landing Sites

Perikanan teri berkembang sangat pesat khususnya di perairan utara Jawa Madura pada tahun terakhir ini. Kajian tentang karakteristik perikanan teri (Engraulidae) di sepanjang pantai utara Jawa-Madura dilaksanakan pada tahun 2017-2018, meliputi sebaran usaha perikanan, tipe armada-alat penangkapan ikan, aspek operasional penangkapan, hasil tangkapan-kelimpahan dan musim penangkapan ikan teri. Pengumpulan data pendaratan ikan teri dilakukan melalui survey di 11 lokasi pendaratan ikan. Hasil penelitian menunjukkan terdapat 12 lokasi tempat pendaratan utama ikan teri di sepanjang pantai utara (pantura) Jawa dan Madura. Dua jenis alat dominan digunakan untuk penangkapan teri adalah pukat cincin dan payang; perikanan bersifat skala kecil, melakukan trip harian, dengan armada kapal penangkap berukuran dibawah 20 GT. Jaring umumnya menggunakan waring dengan mata jaring kecil (3/8 inch) di bagian kantong. Daerah penangkapan di perairan pantai yang dangkal, dekat dengan basis perikanan. Musim penangkapan ikan teri bervariasi, di wilayah bagian barat (Pulolampes, Larangan, Morodemak) berlangsung sekitar musim timur/tenggara (Mei Juli), sedangkan di wilayah bagian timur berlangsung pada awal musim timur dan berjalan cukup lama hingga bulan November (musim peralihan 2). Hasil tangkapan per unit upaya (CPUE, sebagai indek kelimpahan) diduga makin ke arah timur semakin rendah namun disertai musim penangkapan ikan lebih lama. Anchovy fishery has grown rapidly, especially in the northern waters of Java-Madura in the last year. The study on the characteristics of the anchovy fishery (Engraulidae) along the northern coast of Java-Madura was carried out in 2017-2018, covering the distribution of fisheries effort, types of fishing gear, operational aspects of fishing, catch-abundance and fishing season. The collection of anchovy landing data was carried out through a survey at 11 fish landing sites. The results showed that there were 12 main anchovy landing sites along the north coast (pantura) of Java and Madura. Two types of dominant fishing gear used for anchovies are purse seine and payang; Fisheries are small-scale, undertaking daily trips, with a fleet of fishing vessels under 20 GT. The nets generally use “waring” with small mesh (3/8 inch) in the codend. Fishing area in shallow coastal waters, close to the fishing base. The fishing season for anchovy varies, in the western region (Pulolampes, Larangan, Morodemak) it takes place around the east / southeast season (May-July), while in the eastern region it takes place at the beginning of the eastern season and lasts quite a long time until November (transition season 2) . The catch per unit effort (CPUE, as an abundance index) is thought to be getting lower eastward but accompanied by a longer fishing season.

scholarly journals Fishing Effort and Associated Catch per Unit Effort for Small-Scale Fisheries in the Mozambique Channel Region: 1950–2016

2021 ◽  
Vol 8 ◽  
Author(s):  
Dirk Zeller ◽  
Gabriel M. S. Vianna ◽  
Matthew Ansell ◽  
Angie Coulter ◽  
Brittany Derrick ◽  
...  
Keyword(s):  
Fishing Effort ◽  
Small Scale ◽  
Catch Per Unit Effort ◽  
Important Species ◽  
Small Scale Fisheries ◽  
Mozambique Channel ◽  
Fishing Vessels ◽  
Unit Effort ◽  
Fishing Capacity ◽  
Channel Region

The Mozambique Channel region in East Africa has diverse marine ecosystems and serves as a migratory corridor for economically important species. Local and foreign industrial fisheries operate in the Mozambique Channel, but regional small-scale fisheries are the crucially important fisheries that provide food security, livelihoods, and economic opportunities for rural coastal communities. This study reconstructed and investigated trends in the fishing effort and catch per unit effort (CPUE) of small-scale marine fisheries in four Exclusive Economic Zones (EEZ) that constitute the Mozambique Channel, i.e., Union of Comoros, Madagascar, Mayotte, and Mozambique, from 1950 to 2016. Effective fishing effort for small-scale fisheries in the form of fishing capacity in kWdays (i.e., kilowatt days) was derived using the number, length, motorization (engine power) by fishing vessels, as well as an approximate human-powered equivalent for shore-based fishers without vessels, as well as days of fishing per year. Effective small-scale fishing effort in the Mozambique Channel increased by nearly 60 times from just over 386,000 kWdays in 1950 to over 23 million kWdays in 2016. Correspondingly, the overall small-scale CPUE, based on previously and independently reconstructed catch data declined by 91% in the region as a whole, from just under 175 kg⋅kWday–1 in the early 1950s to just over 15 kg⋅kWday–1 in recent years. All four EEZs showed the strongest declines in the small-scale CPUE in the earlier decades, driven by motorization and growth in vessel numbers impacting effective fishing effort. Increased motorization combined with a substantial growth in overall vessel numbers were the drivers of the increasing fishing effort and decreasing CPUE, and clearly suggest that continuing to increase the fishing capacity of small-scale fisheries in the absence of effective and restrictive management actions may exacerbate overexploitation risk.

scholarly journals Pendugaan tingkat pemanfaatan ikan cakalang (Katsuwonus pelamis) di Perairan Prigi, Jawa Timur

DEPIK ◽  
2016 ◽  
Vol 5 (1) ◽  
Author(s):  
Agus Setiyawan
Keyword(s):  
Secondary Data ◽  
Primary Data ◽  
Utilization Rate ◽  
Catch Per Unit Effort ◽  
Sustainable Fisheries ◽  
Fishing Activity ◽  
Katsuwonus Pelamis ◽  
Average Value ◽  
Unit Effort ◽  
Year 2000

Abstract. Skipjack fishing activity in Prigi waters mostly used purse seine and troll line. The aims of the research was to determinate the utilization rate of skipjack. Catch per Unit Effort (CPUE), Maximun Sustainable Yield (MSY), and IMP were calculated from primary data of ship log book and secondary data were the statistic report of PPN Prigi from year 2000 - 2011. The research was conducted frm Februari to Nopember 2013.  The result showed that fishing season occurred on June to July and from September to November, where the peak season at September with Effort value (EMSY)  was 245 trip/year and number of catch sustainable (hMSY) was 1.219 ton/year. The highest Estimation of Utilization rate (196.98%) was occurred on 2002, while the lowest (73.54%) was recorded on 2011. In addition the average value was 106% indicate the overfishing, therefore it is crucial to plan the sustainable fisheries management in relation to protect the skipjack fishery in Prigi waters.Keywords: Utilization Rate; Skipjack; Prigi Waters Abstrak. Kegiatan penangkapan ikan Cakalang (Katsuwonus pelamis) di Perairan Prigi, sebagian besar menggunakan alat tangkap pukat cincin dan pancing tonda.Tujuan penelitian ini adalah untuk mengetahui tingkat pemanfaatan ikan cakalang. Nilai Catch per Unit Effort (CPUE), Maximum Sustainable Fisheries (MSY), dan Indeks Musim Penangkapan didapatkan dari data primer berupa log book kapal dan data sekunder berupa data statistik Pelabuhan Perikanan Nusantara Prigi dari tahun 2000 - 2011. Penelitian ini dilaksanakan pada bulan Februari – Nopember tahun 2012. Hasilnya menunjukkan bahwa Pola Musim Penangkapan terjadi pada bulan Juni – Juli dan September – Nopember, musim puncak penangkapan terjadi pada bulan September dengan nilai effort lestari (EMSY) sebesar 245 trip/tahun dan total hasil tangkapan lestari (hMSY) sebesar 1.219 ton/tahun. Hasil pendugaan terhadap tingkat pemanfaatan menunjukkan hasil tertinggi dengan nilai sebesar 196,98% pada tahun 2002, sedangkan nilai terendah sebesar 73,54% pada tahun 2011. Dari data menunjukkan rata – rata nilai tingkat pemanfaatan sebesar 114,9%. Diduga telah terjadi upaya penangkapan yang berlebih, jadi dibutuhkan rencana pengelolaan perikanan yang berkelanjutan untuk menjaga perikanan cakalang di Perairan Prigi.Kata Kunci: Tingkat Pemanfaatan; Cakalang; Perairan Prigi

scholarly journals Integrating vessel monitoring systems (VMS) data with daily catch data from logbooks to explore the spatial distribution of catch and effort at high resolution

2010 ◽  
Vol 68 (1) ◽  
pp. 245-252 ◽  
Author(s):  
Hans Gerritsen ◽  
Colm Lordan
Keyword(s):  
Spatial Distribution ◽  
High Resolution ◽  
Practical Method ◽  
Monitoring Systems ◽  
Catch Per Unit Effort ◽  
Fishing Activity ◽  
Distribution Maps ◽  
Catch Data ◽  
Fishing Vessels ◽  
Logbook Data

Abstract Gerritsen, H., and Lordan, C. 2011. Integrating vessel monitoring systems (VMS) data with daily catch data from logbooks to explore the spatial distribution of catch and effort at high resolution. – ICES Journal of Marine Science, 68: 245–252. Vessel monitoring systems (VMS) automatically collect positional data from fishing vessels, and the data can be linked to catch data from logbooks to provide a census of spatially resolved catch-and-effort data. The most appropriate and practical method for integrating Irish VMS and logbook data is explored and validated. A simple speed rule is applied to identify VMS records that correspond to fishing activity. The VMS data are then integrated with the catch data from logbooks using date and vessel identifier. Several assumptions were investigated, and the resulting distribution maps of catch and effort appear to be unbiased. The method is illustrated with an example of a time-series of spatially explicit estimates of catch per unit effort. The proposed method is relatively simple and does not require specialist software or computationally intensive methods. It will be possible to generalize this approach to similar datasets that are available within the EU and many other regions. Analysis of integrated VMS and logbook data will allow fisheries data to be analysed on a considerably finer spatial scale than was possible previously, opening up a range of potential applications.

scholarly journals Analisis Pemanfaatan Sumber Daya Ikan Cakalang (Katsuwonus Pelamis) yang Didaratkan di Kota Kendari

2019 ◽  
Vol 3 (1) ◽  
Author(s):  
Andi Sry H.W. Dopu ◽  
Muslim Tadjuddah ◽  
La Anadi
Keyword(s):  
Catch Per Unit Effort ◽  
Katsuwonus Pelamis ◽  
Unit Effort

Ikan cakalang (Katsuwonus pelamis) yang didaratkan di Kota Kendari merupakan salah satu hasil tangkapan yang banyak menyumbang produksi perikanan laut di Kota Kendari.  Tujuan dari penelitian ini adalah untuk menghitung CPUE (Catch per Unit Effort) ikan cakalang yang di daratkan di Kota Kendari dan menganalisis status pemanfaatan ikan cakalang yang didaratkan di Kota Kendari, menentukan jumlah tangkapan yang diperbolehkan (JTB)  Penelitian ini dilaksanakan pada bulan Maret – Mei 2018 di PPS Kendari dan PPI Sodohoa.  Metode yang digunakan dalam penelitian ini adalah metode surplus produksi.  Alat tangkap yang digunakan untuk menangkap ikan cakalang yang didaratkan di Kota Kendari adalah pukat cincin, huhate, pancing tonda, pancing ulur.  Alat tangkap yang dijadikan standar adalah huhate.  Hasil analisis CPUE diperoleh nilai CPUE standar rata rata tahun 2008 – 2017 sebesar 5.06 ton/trip.  Nilai CPUE ikan cakalang yang didaratkan di Kota Kendari cenderung berfluktuasi CPUE tertinggi terjadi pada tahun 2015.  Rata rata tingkat pemanfaatan sumber daya ikan cakalang (Katsuwonus pelamis) yang didaratkan di Kota Kendari sebesar 46,35% nilai ini masih di bawah nilai MSY.   Jumlah tangkapan yang diperbolehkan (JTB) sebesar 15826.023 ton/tahun dengan JTB rata rata 57,94 %, hal ini menunjukkan bahwa hasil tangkapan ikan cakalang yang didaratkan di Kota Kendari masih dibawah nilai jumlah tangkapan yang diperbolehkan (JTB). Kata Kunci: Ikan cakalang (Katsuwonus Pelamis), CPUE, tingkat pemanfaatan, jumlah tangkapan yang diperbolehkan (JTB), Kota Kendari

scholarly journals Influence plots and metrics: tools for better understanding fisheries catch-per-unit-effort standardizations

2011 ◽  
Vol 69 (1) ◽  
pp. 84-88 ◽  
Author(s):  
Nokome Bentley ◽  
Terese H. Kendrick ◽  
Paul J. Starr ◽  
Paul A. Breen
Keyword(s):  
New Zealand ◽  
Generalized Linear Models ◽  
Linear Models ◽  
Marine Science ◽  
Catch Per Unit Effort ◽  
Common Procedure ◽  
Explanatory Variables ◽  
Unit Effort

Abstract Bentley, N., Kendrick, T. H., Starr, P. J., and Breen, P. A. 2012. Influence plots and metrics: tools for better understanding fisheries catch-per-unit-effort standardizations. – ICES Journal of Marine Science, 69: 84–88. Standardization of catch per unit effort using generalized linear models (GLMs) is a common procedure that attempts to remove the confounding effects of variables other than abundance. Simple plots and metrics are described to assist understanding the standardization effects of explanatory variables included in GLMs, illustrated with an example based on New Zealand trevally (Caranx lutescens) data.

scholarly journals Risso's dolphin depredation in the Azorean hand-jig squid fishery: assessing the impacts and evaluating effectiveness of acoustic deterrents

2014 ◽  
Vol 71 (9) ◽  
pp. 2608-2620 ◽  
Author(s):  
Maria João Cruz ◽  
Vera Leal Jordão ◽  
João Gil Pereira ◽  
Ricardo Serrão Santos ◽  
Mónica A. Silva
Keyword(s):  
Linear Models ◽  
Generalized Additive Models ◽  
Economic Loss ◽  
Scientific Basis ◽  
Additive Models ◽  
Catch Per Unit Effort ◽  
Economic Implications ◽  
Factors Affecting ◽  
Fishing Vessels ◽  
Risso's Dolphin

Abstract Depredation by cetaceans is a growing problem that may have serious economic implications for fisheries and for dolphin conservation. We investigated depredation by Risso's dolphin (Grampus griseus) in the hand-jig squid fishery around the Azores to determine the factors that may influence depredation behaviour and impacts on the fishery, and conducted experiments to evaluate the effectiveness of acoustic deterrent devices. Monitoring of the interaction between dolphins and the fishery was carried out through interviews with fishers and observations made from fishing vessels. Depredation was reported in 50% of the 506 interviews conducted from 2009 to 2011 and Risso's dolphins were reportedly responsible for 92% of the depredation events. Risso's dolphin depredation was recorded in 33% of the observed fishing trips (n = 96). Generalized additive models revealed that depth, sea surface temperature, and fishing time were important factors affecting depredation probability. Generalized linear models showed that fishing time also influenced the number of squids depredated, with greater catch losses predicted as duration of the fishing events increased. Depredation rate was calculated at 3% yielding an estimate of 8–12 t of squid lost to dolphins per year and an annual economic loss of €50 000 for the squid fishery of S. Miguel. The use of pingers had no significant effect on the catch per unit effort of squids. Depredation rates were similar for the control (0.20), inactive (0.19), and active (0.19) pinger conditions. Models indicated no significant effect of pinger brand and condition on cetacean depredation. This study is the first attempt to monitor depredation by Risso's dolphins on a hand-jig squid fishery providing a scientific basis for future management of interactions between cetaceans and fisheries.

Status of swordfish stocks in the eastern Pacific Ocean estimated using data from Japanese tuna longline fisheries

2003 ◽  
Vol 54 (4) ◽  
pp. 393 ◽  
Author(s):  
Michael G. Hinton
Keyword(s):  
Pacific Ocean ◽  
Linear Models ◽  
Rapid Change ◽  
Eastern Pacific ◽  
Eastern Pacific Ocean ◽  
Catch Per Unit Effort ◽  
The North ◽  
Unit Effort ◽  
Using Data ◽  
Longline Fisheries

Swordfish (Xiphias gladius) are harvested in target and non-target fisheries throughout the eastern Pacific Ocean (east of 150°W). Analyses of trends in catch rates (catch per unit effort) standardized using general linear models indicate that there are two stocks in the eastern Pacific Ocean that have a north–south boundary at 5°S latitude; this is in striking contrast to the 10°N boundary that has generally been assumed by previous studies. Trends in standardized catch per unit effort have held relatively level for the north stock and have been increasing for the south stock. Considering these trends and given that annual catches have been fairly stable in the region since 1989, it appears that swordfish are not overfished in the eastern Pacific Ocean. Given the potential for rapid change in the nature of those gill-net and longline fisheries that are increasingly targeting swordfish in the region, the trends in standardized catch per unit effort should be closely monitored for indications of changing status of these stocks.

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