Combined effects of photoperiod and temperature on growth and survival of African catfish (Clarias gariepinus, Burchell 1822) larvae under laboratory conditions
Date
2016
Authors
Okoth, Elijah Oyoo
Orina, Paul Sagwe
Rasowo, Joseph
Musa, Safina
Munguti, Jonathan M.
Karisa, Harrison Charo
Journal Title
Journal ISSN
Volume Title
Publisher
Taylor and Francis
Abstract
The effect of photoperiod (24L:00D, 12L:12D, and 00L:24D) and temperature (22 ± 1°C and 28 ± 1°C) on performance of Clarias gariepinus larvae was tested. Larvae weighing 3.2 ± 0.24 mg
were cultured in aquaria at a stocking density of 20 fish L−1 and fed twice a day on catfish starter diet (40% CP) at 10 % BW day−1. Highest mean weight gain (31.00 mg), SGR (7.56%
day−1), and survival (83%) were achieved at photoperiod and temperature combination of 00L:24D and 28 ± 1°C. Percent survival of larvae differed significantly (p < .05) among treatments with optimal survival of (83%) in treatment combination of 28 ± 1°C and 00L:24D, while lowest survival (40%) in treatment combination of 22 ± 1°C and 24L:00D.
Description
doi.org/10.1080/10454438.2015.1113763
Keywords
Clarias gariepinus;, growth, photoperiod, survival, temperature
Citation
JOURNAL OF APPLIED AQUACULTURE 2016, VOL. 28, NO. 1, 17–25