Bioinformation of Blue Swimming Crab (Portunus pelagicus) during Covid-19 Pandemic in Bintan District, Riau Islands Province
Bioinformasi Rajungan (Portunus pelagicus) dalam Masa Pandemi Covid-19 di Kabupaten Bintan, Provinsi Kepulauan Riau
Abstrak
Provinsi Kepulauan Riau memiliki potensi perikanan yang tinggi karena didominasi oleh wilayah perairan dibandingkan daratannya. Potensi perikanan yang tinggi tersebut diantaranya adalah komoditas rajungan. Pandemi covid-19 di seluruh dunia berpengaruh terhadap berbagai sektor, salah satunya sektor perikanan rajungan, sehingga informasi biologi (bioinformasi) dalam masa pandemi ini sangat bermanfaat untuk kegiatan perikanan rajungan berkelanjutan di Kabupaten Bintan. Tujuan penelitian ini untuk memberikan bioinformasi terkait rajungan dalam masa pandemi covid-19 di Kabupaten Bintan. Bioinformasi tersebut meliputi distribusi ukuran, pola pertumbuhan, nisbah kelamin jantan dan betina, serta tingkat kematangan gonad rajungan betina di perairan Kawal dan Pengujan. Ukuran lebar karapas rajungan di Kawal berkisar antara 102,2–187,9 mm dan ukuran lebar karapas rajungan di Pengujan berkisar antara 106,3–148,4 mm. Modus kelas lebar karapas ditemukan pada nilai tengah kelas 130 mm (di Kawal) dan 140 mm (di Pengujan). Pola pertumbuhan rajungan baik betina maupun jantan di Kawal dan Pengujan bersifat allometrik negatif. Berdasarkan uji chi square dengan tingkat kepercayaan 95% (α = 0,05), nisbah kelamin rajungan jantan-betina secara umum baik di Kawal maupun di Pengujan pada kondisi yang seimbang. Tingkat kematangan gonad (TKG) pada rajungan betina secara keseluruhan ditemukan mulai dari stadia TKG 1 sampai stadia TKG 4. Di perairan Kawal ditemukan sebesar 67% matang gonad, 22% belum matang gonad, dan 11% berried female. Di perairan Pengujan ditemukan sebesar 31% matang gonad, 63% belum matang gonad, dan 6% berried female.
Unduh
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