Selektivitas Drift Gillnet pada Ikan Kembung Lelaki (Rastrelliger kanagurta) Di Perairan Belawan Pantai Timur Sumatera Utara Provinsi Sumatera Utara

Sutan Barita S Tambunan, Fauziyah ., Fitri Agustriani

Abstract


The Research are Drift Gillnet Selectivity For Short Bodied Mackerels (Rastrelliger kanagurta) in Belawan East Coast North Sumatera North Sumatera held on July to August 2009. The objective of this research is to determine the size and how the mackerel (Rastrelliger kanagurta) get caught, to determine the drift gillnet selectivity for short bodied mackerels (Rastrelliger kanagurta) using three type treatment of mesh size 1.75; 1.8 and 1.9 inch and using mackerel (Rastrelliger kanagurta) and draw selectivity drift gillnet curve. Fish sampling conduct using Experimental Fishing methods with fishing ground determination following fishing base operation. This Experiment shows result that Mackerel caught using drift gillnet with size of mesh 1.75, 1.8 and 1,9 inch is 282 fish or 25,04 % from total catch 1126 fish. The range size of the fish listed as fork length 13,0-32,2 cm, girth 3,5-7,2 cm, and fish weight 166,30-167,79 gram. During the experiment, based on how the fish caught using entangled is 29, 78 %. The mesh size 1,9 Inch is the most selective getting mackerel (Rastrelliger kanagurta). Selectivity curve for fork length measurement show a slope curve where as ratio of increment and decrement of the three mesh size almost contiguous.

 

Keywords: belawan coast, drift gillnet, mesh selectivity, short bodied mackerel

 

Penelitian mengenai selektivitas drift gillnet pada ikan kembung lelaki (Rastrelliger kanagurta) Di Perairan Belawan Pantai Timur Sumatera Utara Provinsi Sumatera Utara pada bulan Juli-Agustus 2009. Tujuan penelitian adalah mengetahui ukuran dan cara tertangkapnya ikan kembung lelaki (Rastrelliger kanagurta), menentukan selektivitas drift gillnet dengan perlakuan mesh size 1.75, 1.8, dan 1.9 inci dan menggambarkan kurva selektivitas drift gillnet ikan kembung lelaki (Rastrelliger kanagurta). Pengambilan sampel ikan dilakukan dengan metode Experimental Fishing dengan penentuan daerah penangkapan mengikuti operasi penangkapan ikan atau fishing base nelayan. Hasil penelitian ini menunjukan bahwa ikan kembung lelaki yang tertangkap dengan menggunakan drift gillnet sebanyak 282 ekor atau sebesar 25.04 % dari jumlah total hasil tangkapan, yaitu sebesar 1126 ekor, kisaran ukuran ikan kembung lelaki yang tertangkap masing-masing adalah fork length 13,0-32,2 cm, girth 3,5-7,2 cm, dan berat ikan 166,30-167,79 gram. Berdasarkan data, cara tertangkap ikan, banyak ikan yang tertangkap dengan cara terpuntal (Entagled) yaitu sebesar 29,78%. Jaring dengan ukuran mesh size 1.9 inci paling selektif menangkap ikan kembung lelaki (Rastrelliger kanagurta) selama penelitian. Kurva selektivitas memberikan bentuk yang landai dimana nilai ratio kenaikan dan penurunan antara ketiga mesh size tersebut hampir berdekatan.

 

Kata kunci: drift gillnet, ikan kembung lelaki, mesh selektivitas, perairan belawan


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DOI: https://doi.org/10.56064/maspari.v1i1.1121

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