1. Doctoral Program in Mathematics and Sciences Application (DMAS), Graduate Program , Universitas Syiah Kuala , Banda Aceh , Indonesia
2. Faculty of Marine and Fisheries , Universitas Syiah Kuala , Banda Aceh , Indonesia
3. Faculty of Fisheries and Marine Sciences , University of Riau , Pekanbaru , Indonesia. Indonesia
4. Faculty of Sciences , University of Riau , Pekanbaru , Indonesia