scholarly journals DISTRIBUSI JUVENIL TUNA BERDASARKAN HASIL TANGKAPAN PURSE SEINE DI LAUT BANDA

Author(s):  
Mohammad Rais ◽  
Eddy Hamka ◽  
La Ode Parisa
Keyword(s):  

Tuna merupakan salah salah satu jenis ikan ekonomis penting di Indonesia dan menjadi salah satu komoditas eksport utama sektor perikanan, sehingga diperlukan adanya pengelolaan yang terencana untuk menjamin keseimbangan antara pemanfaatan dan populasi tuna. Pelabuhan Perikanan Samudera (PPS) Kendari sebagai pusat pendaratan ikan menunjukkan masih banyak juvenil tuna oleh (bangkumis) tertangkap khususnya pada alat tangkap purse seine.  Tujuan dari penelitan ini yaitu untuk mengetahui (1) distribusi ukuran panjang menggunakan analisis distribusi frekuensi, (2) Produktivitas penangkapan juvenil tuna yang tertangkap menggunakan analisis CPUE, (3) Sebaran spasial lokasi penangkapan juvenil tuna menggunakan analisis spasial (GIS). Penelitian dilaksanakan pada januari sampai juni 2017 di laut banda dengan Fishing base Pelabuhan Perikanan Samudera. Pengumpulan data dilakukan dengan mengikuti operasi penangkapan purse seine pada 30 Titik penangkapan lalu melakukan pencatatan ukuran panjang dan berat total tagkapan juvenil  tuna.  Hasil penelitian menunjukkan ukuran juvenil  tuna yang tertangkap di laut banda memiliki rentang ukuran 22,5 cm - 55,4 cm. Produktivitas penangkapan dilihat dari nilai CPUE perbulan pada semua alat tangkap purse seine yang menangkap juvenil tuna di laut banda. CPUE tertinggi pada bulan juni dengan nilai 2728 kg per unit penangkapan dan terendah pada bulan maret dan april dengan nilai 1243 kg per unit penangkapan. Lokasi penangkapan juvenil tuna selama penelitian tersebar di wilayah Utara, tenggara dan selatan laut banda (030 LU – 060 LS, 1220 BT – 1240 BT). Penelitian ini memberi berkontribusi dalam perumusan kebijakan pengelolaan perikanan tuna di Indonesia, khususnya di Sulawesi Tenggara, sehingga stok sumberdaya ikan tuna secara jangka panjang akan terjaga yang pada akhirnya berdampak bagi keberlanjutan ekologi dan ekonomi usaha perikanan tuna. Kata kunci : GIS, CPUE, Produktivitas, PPS Kendari, Tuna

1985 ◽  
Vol 26 ◽  
pp. 11-18 ◽  
Author(s):  
E Wassef ◽  
A Ezzat ◽  
T Hashem ◽  
S Faltas

Author(s):  
Frischilla Pentury ◽  
Eygner Gerald Talakua ◽  
Tati Ngangun

The low profits of mini purse seine in Sathean Village will have an impact on the business risks being carried out. The new paradigm states that the relationship between risk and profit levels is quadratic; too much risk can lead to the loss and even destruction of a business. Thus, the fisherman of mini purse seine business owners in Sathean Village needs to manage their business risk well to achieve optimum profit for business sustainability. This study aims to assess business profits and business risks. Primary data was collected on 6 fisherman owners of mini purse seine business owners in Sathean Village as respondents, conducted business profit analysis and business risk calculation based on probability density. The results showed that the business profit was Rp 241,608,203/year or Rp 196,551,994 in the peak season, Rp 41.828.721 in the medium season and Rp 3.2227.488 in the less season.In peak and less seasons, these businesses are at risk or have the opportunity to lose, while in the medium season is not risky.


Author(s):  
Gwenaëlle Wain ◽  
Loreleï Guéry ◽  
David Michael Kaplan ◽  
Daniel Gaertner

Abstract Numerous pelagic species are known to associate with floating objects (FOBs), including tropical tunas. Purse seiners use this behaviour to facilitate the capture of tropical tunas by deploying artificial drifting fish aggregating devices (dFADs). One major recent change has been the integration of echosounders in satellite-tracked GPS buoys attached to FOBs, allowing fishers to remotely estimate fishable biomass. Understanding the effects of this new technology on catch of the three main tuna species (yellowfin tuna, Thunnus albacares; bigeye tuna, Thunnus obesus; and skipjack tuna, Katsuwonus pelamis) is important to accurately correct for this change in catch-per-unit-effort (CPUE) indices used for stock assessments. We analysed catch data from the French purse seine fleet for the period 2010–2017 in the Indian Ocean to assess the impact of this fleet’s switch to echosounder buoys around 2012. Results indicate that echosounders do not increase the probability a set will be succesful, but they have a positive effect on catch per set, with catches on average increasing by ≈2−2.5 tonnes per set (≈10%) when made on the vessel's own dFADs equipped with an echosounder buoy. Increases were due to a decrease in sets below ≈25 tonnes and an increase in those greater than ≈25 tonnes, with a non-linear transition around this threshold. This increase explains the considerable investment of purse seiners in echosounder buoys, but also raises concerns about bias in stock size estimates based on CPUE if we do not correct for this fishing efficiency increase.


2021 ◽  
Vol 674 (1) ◽  
pp. 012044
Author(s):  
A Rahmah ◽  
M Ulfa ◽  
A Damora ◽  
R M Aprilla ◽  
M Chaliluddin
Keyword(s):  

2021 ◽  
Vol 695 (1) ◽  
pp. 012032
Author(s):  
R Irnawati ◽  
F N Supadminingsih ◽  
D Surilayani ◽  
H S Nurdin ◽  
A Susanto ◽  
...  

2021 ◽  
Vol 241 ◽  
pp. 106001
Author(s):  
Osman Crespo-Neto ◽  
Eric Díaz-Delgado ◽  
Tatiana A. Acosta-Pachón ◽  
Raúl O. Martínez-Rincón

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