Abstract
The province of South Kalimantan has the largest peat swamp that is named Danau Panggang Swamp with an area of 5,390.7 Ha. This swamp has ecological, economic and potential functions of a large fishery resource. The purposes of this study are to evaluate the exploitation rate of Snake Head Fish (Channa striata) in Danau Panggang Swamp, by population dynamic analysis using FISAT program of Von Bertalanffy method. The results showed that the growth pattern of Snake Head Fish (Channa striata) has the tendency to grow negative allometric with 63.4 cm of long infifer (L¥), growth rate (k) 0.15 per year, theoretical age at the time of the fish is equal to 0 (t0) is -1.48257 years. While the natural mortality rate (M) was 0.43, the mortality rate due to catch (F) of 0.69/year and the total mortality rate (Z) of 1.12/year, and the rate of exploitation value E = 0.62. These results indicated that the exploitation rate of Head Snake Fish (Channa striata) in Danau Panggang swamp has a tendency to overfishing.
Highlights
Introduction to tropical fish stock assessmentPart 1: Manual
The results showed that the growth pattern of Snake Head Fish (Channa striata) has the tendency to grow negative allometric with 63.4 cm of long infifer (L ), growth rate (k) 0.15 per year, theoretical age at the time of the fish is equal to 0 (t0) is -1.48257 years
These results indicated that the exploitation rate of Head Snake Fish (Channa striata) in Danau Panggang swamp has a tendency to overfishing
Summary
Hubungan panjang berat ikan di rawa Danau Panggang mempunyai nilai slope (b) kurang dari 3, ikan dengan nilai b kurang dari 3 pola pertumbuhannya alometrk negative, ini berarti bahwa pertumbuhan panjangnya lebih cepat dari pertumbuhan beratnya. Pola pertumbuhan beberapa spisies mempunyai kecenderungan untuk tumbuh secara alometrik negative, dimana hal ini berhubungan dengan morfologi tubuh mereka yang cenderung memanjang, sehingga pertumbuhan panjangnya lebih cepat daripada beratnya (Riyadi, 1998). Hasil pengambilan data lapang selama 4 kali pengambilan data untuk ikan Gabus di awa Danau Panggang setelah dilakukan dikelompokkan dalam data frekuensi, didapatkan data seperti di bawah ini. Diagram kohort pada masing – masing tanggal pengambilan sampel ikan Gabus (a) tanggal 5 Juli 2017, (b) tanggal 20 Juli 2017, (c) tanggal 9 Agustus 2017, (d) 23. Hasil analisis parameter pertumbuhan ikan Gabus menggunakan Program FISAT
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