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IJFS 2014, 13 Back to browse issues page
Effects of salinity, temperature, light intensity and light regimes on production, growth and reproductive parameters of Apocyclops dengizicus
O Farhadian * , F Md Yusoff , A Arshad
, farhadyo@yahoo.com
Abstract:   (4652 Views)
The effects of salinity, temperature, and light conditions on production and development, longevity, survival and sex ratios of the cyclopoid copepod, A. dengizicus were determined. Seven different salinity levels (5, 10, 15, 20, 25, 30, 35 psu), four temperatures (20, 25, 30, 35 °C), three different light intensities (33.3, 85.3, 162.1 μmol photons/ m2/ s) and light regimes (24:0, 0:24, and 12:12 h light:dark regime) were employed . The highest production was achieved under 20 psu salinity. The optimum temperature required for the maximum reproduction and shortest development time was 35 °C. The production was highest (p<.05) and development rate of A. dengizicus was shortest (p<.05) under the lowest light intensity (33.3 μmol photons/ m2/ s). Continuous light (24:0 h LD) showed positive effects on growth and production. Light regimes 24:0 h and 12:12 h LD yielded the highest total production and growth (p<.05), with highest (p<.05) survival percentage. This study demonstrated that A. dengizicus can tolerate wide range of environmental conditions and can be cultured for commercial live feed purposes as well as toxicity studies.
Keywords: Environmental parameters, A. dengizicus, Cyclopoid copepod, Tropical, Production, Longevity, Sex ratio
Full-Text [PDF 160 kb]   (1751 Downloads)    
Type of Study: Orginal research papers | Subject: Fish processing
Received: 2014/04/28 | Accepted: 2014/04/28 | Published: 2014/04/28
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Farhadian O, Md Yusoff F, Arshad A. Effects of salinity, temperature, light intensity and light regimes on production, growth and reproductive parameters of Apocyclops dengizicus . IJFS. 2014; 13 (1) :30-46
URL: http://jifro.ir/article-1-1424-en.html


Volume 13, Issue 1 (1-2014) Back to browse issues page
مجله علوم شیلاتی ایران Iranian Journal of Fisheries Sciences
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