Karakteristik Populasi Ikan Biawan (Helostoma temminckii Cuvier) di Danau Kelubi Kecamatan Tayan Hilir

Authors

  • Yeni Rahman, Tri Rima Setyawati, Ari Hepi Yanti Jurusan Biologi - Fakultas MIPA Universitas Tanjungpura Jl. Prof. Dr. H. Hadari Nawawi Pontianak - Kalimantan Barat

DOI:

https://doi.org/10.26418/protobiont.v2i2.2747

Abstract

Ikan biawan (Helostoma temmincki Cuvier) merupakan ikan air tawar ekonomis yang banyak ditemukan di Danau Kelubi dan banyak ditangkap oleh nelayan setempat. Penelitian ini bertujuan untuk mengetahui karakteristik populasi ikan biawan di Danau Kelubi yang meliputi kepadatan, struktur umur, nisbah kelamin dan indeks  kematangan gonad (IKG). Penelitian dilakukan pada bulan Mei hingga Juli 2012. Pengambilan sampel ikan menggunakan metode Proportionate Cluster Random Sampling dengan jala tebar seluas 12,56m2. Berdasarkan analisis Catch Per Unit Effort (CPUE) diketahui kepadatan ikan biawan di Danau Kelubi sebanyak 331 ekor, yang terdiri atas dua kelompok umur ekologis yaitu juvenil (75,42%) dan dewasa (24,58%).  Nisbah kelamin ikan biawan jantan dan betina memiliki perbandingan 1,5:1. Populasi ikan biawan didominasi ikan muda dengan tingkat kematangan gonad (TKG) I. Indeks kematangan gonad (IKG) ikan biawan berkisar antara 0,47–4,48 %. Nilai IKG ikan biawan di Danau Kelubi < 20% menandakan bahwa ikan biawan dapat memijah sepanjang tahun.

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Published

2013-07-31

Issue

Vol. 2 No. 2 (2013)

Section

Articles

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