Bintang Ubamnata, 0914111026 (2014) PERTUMBUHAN DAN BIOLOGI REPRODUKSI IKAN TEMBAKANG (Helostoma temminckii) DI RAWA BAWANG LATAK, KABUPATEN TULANG BAWANG, LAMPUNG. Fakultas Pertanian, Universitas Lampung.
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Abstrak (Berisi Bastraknya saja, Judul dan Nama Tidak Boleh di Masukan)
ABSTRAK Ikan tembakang (Helostoma temminckii) merupakan salah satu ikan yang memiliki nilai ekonomis tinggi di Rawa Bawang Latak. Penangkapan yang berlebihan mengakibatkan jumlah populasi ikan tembakang menurun. Penelitian ini bertujuan untuk mengetahui aspek pertumbuhan dan biologi reproduksi ikan tembakang yang meliputi faktor kondisi, nisbah kelamin, TKG, IKG, ukuran ikan pertama kali matang gonad, fekunditas, dan diameter telur. Penelitian dilaksanan pada bulan Oktober 2013 – Januari 2014 pada 2 stasiun di Rawa Bawang Latak. Frekuensi pengambilan sampel ikan dilakukan 1 kali dalam sebulan menggunakan alat tangkap sero. Hasil penelitian menunjukkan pola pertumbuhan ikan tembakang bersifat allometrik positif, nilai faktor kondisi ikan jantan dan betina tidak berbeda nyata, pertumbuhan ikan tembakang betina lebih cepat dibanding ikan jantan. Perbandingan jantan dan betina mengalami ketidaksesuaian dari pola perbandingan jantan dan betina 1:1. Tingkat kematangan gonad ikan jantan dan betina pada bulan Oktober-Januari tidak seragam. Faktor yang paling berpengaruh terhadap TKG yaitu kedalaman, kecerahan, dan suhu. Puncak pemijahan terjadi pada bulan Oktober-November. Indeks kematangan gonad tembakang tertinggi pada bulan November (3,896286 : 15,13067). Fekunditas ikan tembakang berkisar antara 1.868-30.058 butir telur. Berdasarkan pola distribusi diameter telur, pola pemijahan ikan tembakang termasuk total spawner. Kata kunci : Ikan tembakang, biologi reproduksi, Rawa Bawang Latak. ABSTRACT Tembakang (Helostoma temminckii) is one of the economically potential fishes in Rawa Bawang Latak. Over hauling of this fish decrease its population drastically. This study aimed to investigate the aspects of growth and biological reproduction of tembakang including the condition, growth parameter, sex ratio, TKG, IKG, fish size once it gonad mature, fecundity, and egg diameter. The study was held on October 2013 – January 2014 at two stations in Rawa Bawang Latak. Sampling frequency of fish was one a month using catching tool called Sero. The result of the study shows the growth pattern of tembakang is positive allometric, the condition factor value of male and female fish isn’t really different, the growth of female tembakang fish is faster than the male one. The pattern comparison between male and female is inappropriate which the ideal is 1:1. The gonad mature level between male and female in October – January is not uniform. The most influential factors toward TKG are the depth, the brightness, and temperature. The peak of spawn happens on October - November. The highest gonad mature index of tembakang is on November (3,896286 : 15,13067). The size of male tembakang fish at the first gonad mature is 77,481 – 139,780 mm and age of 21 months, while the size of female tembakang fish at the first gonad mature is 98,866 – 100,887 mm with age of 8 months. The fecundity of tembakang fish is about 1.868-30.058 eggs. Based on the distribution pattern of egg diameter, the spawn pattern of tembakang is total spawner. Key words :Tembakang, Biological reproduction, Rawa Bawang Latak.
| Jenis Karya Akhir: | Skripsi |
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| Subyek: | |
| Program Studi: | Fakultas Pertanian dan Pascasarjana > Prodi Budidaya Perairan |
| Pengguna Deposit: | 0421386 . Digilib |
| Date Deposited: | 26 Jan 2015 06:30 |
| Terakhir diubah: | 26 Jan 2015 06:30 |
| URI: | http://digilib.unila.ac.id/id/eprint/6489 |
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