Aspek biologi reproduksi ikan pari blentik Neotrygon kuhlii di perairan Selat Sunda

• Main Authors: Salma Abubakar, Mennofatria Boer, , Sulistiono
• Format: Article
• Language: English
• Published: Asosiasi Sains Akuakultur Indonesia 2016-12-01
• Series: Jurnal Akuakultur Indonesia
• Online Access: http://journal.ipb.ac.id/index.php/jai/article/view/12639

<p class="BasicParagraph"><strong>ABSTRACT</strong></p><p class="BasicParagraph"> </p><p class="BasicParagraph">Bluespotted stingray fish <em>Neotrygon kuhlii</em> is the important fish economically captured from Sunda Strait. Intensive fishing could decrease bluespotted stingray stock. This study was aimed to know the length-weight, and reproduction characteristic. The reproduction characteristic covered the size of first gonad maturity, the level and also index of gonad maturity of bluespotted stingray fish in Labuan Fishing Dock, Banten. The result showed the equilibrium of length-weight of female fish was about W=0.0007L2,1496. Meanwhile, the male fish was about W=0.0000L2.251. Male fish was better than female fish according their relatively condition factor. Decreasing of the factor condition was caused by feeding habit to grow the reproduction cells. The size of first gonad maturity for the female and male respectively were about 550–799 dan 550–760 mm. The highest level maturity even female or male was on IV achieved in June and Juli 2013. Increasing the index (IKG) was followed by the level of gonad maturity.</p><p class="BasicParagraph"> </p><p class="BasicParagraph">Kata kunci: bluespotted stingray, reproductive characteristic, condition factor, Sunda Strait<strong></strong></p><p class="BasicParagraph"><strong> </strong></p><p class="BasicParagraph"><strong> </strong></p><p class="BasicParagraph"><strong>ABSTRAK</strong></p><p class="BasicParagraph"><strong> </strong></p><p class="BasicParagraph">Ikan pari blentik <em>Neotrygon kuhlii</em> merupakan salah satu sumberdaya ikan ekonomis penting dan sebagai hasil penangkapan di Selat Sunda. Penangkapan yang intensif dapat mengakibatkan penurunan stok ikan pari blentik. Penelitian ini bertujuan untuk mengetahui panjang bobot, dan  karakteristik reproduksi. Karaktersitik reproduksi itu sendiri meliputi ukaran pertama kali matang gonad, tingkat kematangan gonad dan indeks kematangan gonad ikan pari blentik di perairan Selat Sunda yang didaratkan di Pelabuhan Perikanan Pantai (PPP) Labuan, Banten. Berdasarkan hubungan panjang bobot ikan pari betina diperoleh persamaan hubungan panjang dan bobot untuk ikan pari blentik betina W=0,0007L2,1496. Sementara itu pada ikan jantan, persamaan hubungan panjang bobot W=0,0000L2,251. Ikan pari blentik jantan mempunyai faktor kondisi yang relatif lebih besar daripada ikan pari betina. Penurunan nilai faktor kondisi disebabkan bagian terbesar dari makanan yang dikonsumsi digunakan untuk perkembangan sel-sel reproduksinya. Kisaran ukuran pertama kali matang gonad ikan pari blentik betina 550–799, sedangkan untuk ikan pari jantan adalah dengan kisaran panjang total tubuh 550–760 mm. Tingkat kematangan gonad tertinggi ikan betina dan jantan (TKG IV) ditemukan pada bulan Juni dan Juli 2013. Indeks kematangan gonad (IKG) ikan pari semakin meningkat seiring dengan meningkatnya TKG.</p><p class="BasicParagraph"><strong> </strong></p><p>Keywords: ikan pari blentik, karakteristik reproduksi, faktor kondisi, Selat Sunda</p>