Malays. Appl. Biol. (2016) 45(2): 29–36
SURVIVAL AND GROWTH RATES OF SUTCHI CATFISH (Pangasianodon hypophthalmus) JUVENILES UNDER DIFFERENT LIGHT WAVELENGTHS AND INTENSITIES
NOR AMIRA YUSOFF1, MUHAMMAD FIRDAUS SALLEHUDIN1, NAI HAN TAN1, NORMAWATY MOHAMMAD NOOR2 and YUKINORI MUKAI2*
1Department of Biotechnology, Kulliyyah of Science, International Islamic University Malaysia, Jalan Sultan Ahmad Shah, Bandar Indera Mahkota, 25200 Kuantan, Pahang, Malaysia
2Department of Marine Science, Kulliyyah of Science, International Islamic University Malaysia, Jalan Sultan Ahmad Shah, Bandar Indera Mahkota, 25200 Kuantan, Pahang, Malaysia
*E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Accepted 10 October 2016, Published online 21 December 2016
ABSTRACT
This study report the effects of light intensity on the optimum light wavelength and intensity on the survival rate, specific growth rate, and production index of sutchi catfish (Pangasianodon hypophthalmus, Sauvage, 1878) juveniles. The sutchi catfish juveniles (69 days old) with average initial body length of 5.14 cm and body weight of 1.11 g were reared for 11 days (20 individuals/30 L) under five light wavelengths (white with ?max 446 and 566 nm, blue 454 nm, green 520 nm, yellow 590 nm, and red 632 nm) with three light intensities (1.40×10-3, 1.40×10-2 and 1.40 ?mol/m²/s) in triplicates. A two-way ANOVA analysis showed that light intensities had significantly (P < 0.05) affected the survival and specific growth rates of sutchi catfish juveniles. A Bonferroni post hoc analysis showed that the survival and specific growth rates were significantly high (P < 0.05) under the light intensity of 1.40 ?mol/m²/s. In addition, there was a tendency of high growth rate, specific growth rate and production index under red light. Thus, the light intensity of 1.40 ?mol/m²/s under red light is recommended for the rearing of sutchi catfish juveniles for better survival rate, growth rate and production index.
Key words: Sutchi catfish, Pangasianodon hypophthalmus, survival rate, growth rate, light intensities, light wavelengths
