Segi Hayati dan Tingkat Eksploitasi Rajungan Hijau (Thalamita crenata) di Teluk Kendari
Abstract
Rajungan hijau (Thalamita crenata) merupakan salah satu spesies tangkapan sampingan (bycatch) utama perikanan rajungan, dan kajian tentang segi hayati dan tingkat eksploitasinya masih terbatas. Penelitian ini bertujuan mengevaluasi ukuran, nisbah kelamin, perkembangan gonad, musim pemijahan, dan tingkat eksploitasi spesies tersebut di Teluk Kendari. Sampel diambil setiap bulan pada lima lokasi pendaratan penangkapan rajungan. Tingkat eksploitasi rajungan hijau dianalisis dengan konversi kurva hasil tangkapan ke panjang dengan FISAT II. Data ditampilkan berdasarkan jenis kelamin dan periode sampling. Ukuran karapas hewan jantan lebih besar daripada betina dan betina oviger, dan nisbah kelaminnya tidak seimbang antara jantan dan betina. Perkembangan gonad hewan jantan, serta ovarium betina, dan betina oviger didominasi yang matang, dan musim pemijahannya berlangsung sepanjang tahun. Tingkat eksploitasi rajungan hijau di Teluk Kendari telah lebih tangkap (overfishing), sehingga perlu dikendalikan penangkapannya.
Kata kunci: nisbah kelamin, musim pemijahan, tangkapan sampingan, tingkat eksploitasi, Thalamita crenata
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