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Ukuran ikan tuna matabesar (Thunnus obesus) yang ditangkap dengan menggunakan pancing ulur (hand line) di perairan Maluku [Size of bigeye tuna (Thunnus obesus) which are caught by hand lines in Maluku waters]
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Abstract
In order to obtain data and information about the size of bigeye tuna ( Thunnus obesus) which caught by hand line in Malu-ku waters, a research was carried out in some coastal villages in Ambon region i.e. Hutumury, Nusalaut, Seri, Latuhalat, Ambalau and Kelang. Random sampling was done once a week in July to December 2009 by trained enumerators. Aspect observed was fish forked length (FL). The results showed that FL bigeye tunas which caught by tuna hand line in Maluku waters were varied during the study. Hand line was not suited to exploit bigeye tunas in August, September, October and November because many juvenile of bigeye tuna was caught in those months (Lc > Lm). Therefore, hand line was appro-priate for bigeye tunas on July and December.
Abstrak
Dalam rangka memperoleh data dan informasi mengenai ukuran ikan tuna matabesar (Thunnus obesus) yang tertangkap dengan pancing ulur di perairan Laut Maluku, maka telah dilakukan penelitian di desa-desa pusat pendaratan tuna di wilayah Ambon yaitu Desa Hutumury, Nusalaut, Seri, Latuhalat, Ambalau, dan Kelang. Pengambilan contoh dilakukan secara acak satu kali setiap minggu pada bulan Juli-Desember 2009. Penelitian dilakukan dengan bantuan enumerator yang terlatih. Aspek yang diamati adalah ukuran panjang cagak (FL). Hasil penelitian menunjukkan bahwa FL ikan tuna matabesar yang tertangkap pancing ulur di perairan Maluku pada bulan Juli-Desember 2009 bervariasi. Pancing ulur tidak cocok untuk mengeksploitasi ikan tuna matabesar pada Agustus, September, Oktober, dan November karena pada bulan tersebut pancing ulur menangkap tuna matabesar yang masih muda (Lc>Lm). Alat tangkap pancing ulur efektif untuk menangkap ikan tuna mata besar pada bulan Juli dan Desember.
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