Wita Setioko
Indonesian Blue Swimming Crab Association (Asosiasi Pengelolaan Rajungan Indonesia-APRI)

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Population Dynamics of the Three-Spot Swimming Crab (Portunus sanguinolentus) in Pati Waters, Central Java Kamal Mustabiq; Navisa Fairuz; Dicky Darmawan; Ayu Ervinia; Kuncoro Catur Nugroho; Wita Setioko
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 15 No. 3 (2023): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jitkt.v15i3.51512

Abstract

Saat ini Portunus sanguinolentus merupakan salah satu komoditas perikanan yang mengalami penurunan populasi akibat tekanan eksploitasi dan kerusakan habitat atau lingkungan. Hal ini berdampak pada perubahan struktur populasi dan strategi reproduksi P. sanguinolentus, dengan parameter yang dapat berubah antara lain ukuran gonad pertama yang mengecil, perubahan daerah dan musim pemijahan, serta perubahan keseimbangan rasio jenis kelamin. Penelitian ini bertujuan untuk mengetahui dinamika populasi P. sanguinolentus di Kabupaten Pati Jawa Tengah dan bermanfaat bagi industri pengolahan untuk menghasilkan suatu produk baru. Data dan informasi diperoleh melalui observasi, wawancara, dan pencacahan yang dilakukan di setiap tempat pendaratan ikan. Pengumpulan data hasil tangkapan dilakukan di daerah penangkapan ikan kurang dari 12 mil dengan kedalaman maksimal 15 m selama 5 bulan. Perangkat lunak FISAT II digunakan untuk menganalisis parameter pertumbuhan, tingkat kematian, dan tingkat eksploitasi. Diperoleh data berat badan sebesar 7,72 kg dengan jumlah sampel sebanyak 107 ind yang terdiri dari 46 ekor betina dengan rata-rata lebar 106,24 mm dan 61 ekor jantan dengan lebar 103,95 mm, serta rata-rata berat seluruh sampel 74,26 g.
Blue Swimming Crab Enlargement Technique: Insight from Small-Scale Fishery in the South Coast of Pamekasan, Madura Island Lailatul Qomariyah; Muhammad Wijdan Taqiyuddin; Mohamad Bagus Satria; Kuncoro Catur Nugroho; Wita Setioko
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 15 No. 3 (2023): Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jitkt.v15i3.51515

Abstract

Pagagan Village, Pademawu District, and especially members of the "Berkah Capit Biru" fishermen, had the potential to carry out the sustainability of blue swimming crab because of the abundant crab fisheries. The purpose of this research was to encourage fishermen to not always carry out crab fishing activities in nature so nature remained sustainable and to increase the potential of natural and human resources who were enthusiastic about crab enlargement in Pagagan village. This research was conducted from January to May 2022. The crab breeding location measured 8x10 meters, had a substrate of muddy sand, and was in a coastal area bordering a mangrove ecosystem. Wooden stakes woven with bamboo with a netting around them were set higher than the wave. This enlargement technique did not use aeration in the form of wheels but only utilized tidal conditions so that periodic water changes occurred at the site. The stages in the crab enlargement technique are 1) site selection, 2) construction, 3) spreading seeds, 4) feeding, 5) controlling, and 6) harvesting. This enlargement technique is a solution for crab fishermen to meet market stocks. Keywords: blue swimming crab, enlargement technique, small-scale fishery