Bubu lipat merupakan alat tangkap yang banyak dioperasikan nelayan untuk menangkap rajungan, namun memiliki selektivitas rendah tergantung pada ukuran mata jaring yang digunakan. Tingkat selektivitas bubu lipat perlu ditingkatkan agar tangkapan rajungan memiliki ukuran layak tangkap sesuai peraturan. Penelitian uji coba pengoperasian bubu lipat rajungan dengan berbagai ukuran mata jaring yaitu 1¼ , 2, 2½ dan 3 inci, berbentuk bujur sangkar telah dilakukan di perairan utara Lamongan, Jawa Timur. Jumlah bubu lipat yang dioperasikan untuk setiap ukuran mata jaring sebanyak 150 unit per tawur/setting. Tujuan penelitian, untuk mengetahui pengaruh ukuran mata jaring bubu terhadap jumlah dan ukuran hasil tangkapan rajungan. Hasil analisis menunjukkan bahwa perbedaan ukuran mata jaring berpengaruh nyata terhadap hasil tangkapan bubu lipat rajungan. Hasil tangkapan rajungan dari bubu lipat mata jaring 2 inci (2,17 kg/setting) tidak berbeda nyata dengan mata jaring 1¼ inci (2,08 kg/setting). Ukuran lebar karapas (CW=carapace width) rajungan layak tangkap (> 100 mm) semakin besar dengan meningkatnya ukuran mata jaring. Nilai tertinggi prosentase tangkapan rajungan ukuran besar (CW > 100 mm), ditemukan pada bubu lipat ukuran mata jaring 3 inci mencapai 98 % dari total rajungan yang tertangkap. Collapsible crab pot is a common fishing gear that has been operated by many fishermen, however this kind of fishing gear has a low selectivity. The selectivity level of crab pot needs to be increased so that the size of crab catch comply to the allowable legal size. Fishing trials of crab pot with the mesh size of 1¼, 2, 2½ and 3 inch square-shaped has been done in the waters of north Lamongan, East Java. The objectives of this research is to determine the effect of mesh size to the number and size of the catches. The results showed that different mesh size has significant effect on the catch of pot. However the catch of a 2 inch mesh size pot (of 2.17 kg / setting) was not significantly different with the catch of pot with 1¼ inch mesh size (of 2.08 kg / setting). Percentage of BSC catch with carapace width (CW) > 100 mm increased by increasing of mesh size of net. The highest percentage (98 % of the total catch) was obtained from the 3-inch mesh sizes.
Akhir-akhir ini, penangkapan berlebih merupakan masalah yang dihadapi dalam pengelolaan perikanan di Indonesia. Kajian pengelolaan perikanan berbasis kapasitas penangkapan merupakan alternatif pendekatan guna mengendalikan faktor-faktor input yang tidak efisien yang digunakan dalam usaha penangkapan. Tujuan penelitian ini adalah mengukur tingkat efisiensi teknis dan pemanfaatan kapasitas alat tangkap pukat cincin di Banda Aceh. Efisiensi penangkapan dan pemanfaatan kapasitas dari pukat cincin yang dikaji dianalisis dengan menggunakan teknik data envelopment analysis (DEA). Data dianalisis menggunakan program linear (linier programming) dengan bantuan software DEAP version 2.1 kemudian pengolahan data dilanjutkan menggunakan program Microsoft Excel version 2007. Hasil penelitian menunjukkan bahwa beberapa armada purse seine di Banda Aceh telah melebihi nilai optimumnya atau telah terjadi kelebihan kapasitas pemanfaatannya. Untuk mencapai nilai optimumnya nelayan pukat cincin perlu mengurangi input yang digunakan. Management of fishing capacity following the method of measurement has become an important issue of excess capacity and overfishing that serious problem faced in Indonesia fisheries management. Assessment-based fisheries management capacity of the catch is an alternative approach to control the input factors that are not efficiently used in fishing effort. The purpose of this study is to measure the level of technical efficiency and capacity utilization of purse seine Banda Aceh. Capture efficiency and capacity utilization of purse seine were analyzed by using the technique of data envelopment analysis (DEA). Data was analyzed using linear programming the software DEAP version 2.1 and then the analysis was continued using Microsoft Excel version 2007. The results showed that purse seine in Banda Aceh exceed the optimum value or excess fishing capacity so that to achieve the optimum level of the purse seine fishers, the inputs used should be reduced.
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