EFFECT OF DIFFERENT RATIOS OF CNP ON GROWTH INDICES AND FREQUENCY OF PHYTOPLANKTON

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MOSLEMI MEHRAN; RAFIEE GHOLAMREZA; POORBAGHER HADI; JAVANSHIR KHOEI ARASH

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Journal: Journal of Fisheries Year:2017 | Volume:69 | Issue:4 Page(s): 496-505

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Title

EFFECT OF DIFFERENT RATIOS OF CNP ON GROWTH INDICES AND FREQUENCY OF PHYTOPLANKTON

Author(s)

MOSLEMI MEHRAN | RAFIEE GHOLAMREZA | POORBAGHER HADI | JAVANSHIR KHOEI ARASH | Issue Writer Certificate

Keywords

FERTILIZATIONQ1

VERMICOMPOSTQ2

CARP FISHESQ2

PRIMARY PRODUCTIONQ2

PHYTOPLANKTONQ2

ZOOPLANKTONQ2

BENTHOSQ2

Abstract

A completely randomized experimental design in triplicates was conducted to evaluate the effects of different levels of nitrogen with the constant level of carbon and phosphorous on production of warm water fish in Chapakrod fish farm in Joybar. The treatments were use of three levels of C: N: P, respectively, 1: 5.5: 88.6 (T1) 1: 7.5: 88.6 (T2) and 1: 9.5: 6.88 (T3). The mixed chemical fertilizers and organic manures consisted of chicken, cattle feces, vermi-compost, phosphate and urea mixed together to get different levels of CNP. The effect of different concentrations of nitrogen on PHYTOPLANKTON abundance and chlorophyll, were investigated as well. At the end of experiment, the highest number of PHYTOPLANKTON, chlorophyll, relative growth indices were significantly different (P<0.05) among treatments. The highest PRIMARY PRODUCTION and PHYTOPLANKTON number was recorded in treatment T2 with rate of 638 mg/m3/hr and 438,750 per/ml, respectively. The least rates of PRIMARY PRODUCTION and PHYTOPLANKTON were recorded in T1. The mean individual fish weight was higher in T2 for all chines fish carp at the end of the experiment. This rate for silver carp attained to 40/875 gr at the end of the experiment. The most prominent of PHYTOPLANKTON were recorded among treatments included: Ankyra, chlorella, Pedyastrum, Tetrastrum, spirogyra, Navikula, diatoms, filamentous algae and the most BENTHOS and zeoplanktons were included: rotifers, Daphnia, copepoda, ceratopogonidae, and tippulidae.

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APA: Copy

MOSLEMI, MEHRAN, RAFIEE, GHOLAMREZA, POORBAGHER, HADI, & JAVANSHIR KHOEI, ARASH. (2017). EFFECT OF DIFFERENT RATIOS OF CNP ON GROWTH INDICES AND FREQUENCY OF PHYTOPLANKTON. JOURNAL OF FISHERIES (IRANIAN JOURNAL OF NATURAL RESOURCES), 69(4 ), 496-505. SID. https://sid.ir/paper/162193/en

Vancouver: Copy

MOSLEMI MEHRAN, RAFIEE GHOLAMREZA, POORBAGHER HADI, JAVANSHIR KHOEI ARASH. EFFECT OF DIFFERENT RATIOS OF CNP ON GROWTH INDICES AND FREQUENCY OF PHYTOPLANKTON. JOURNAL OF FISHERIES (IRANIAN JOURNAL OF NATURAL RESOURCES)[Internet]. 2017;69(4 ):496-505. Available from: https://sid.ir/paper/162193/en

IEEE: Copy

MEHRAN MOSLEMI, GHOLAMREZA RAFIEE, HADI POORBAGHER, and ARASH JAVANSHIR KHOEI, “EFFECT OF DIFFERENT RATIOS OF CNP ON GROWTH INDICES AND FREQUENCY OF PHYTOPLANKTON,” JOURNAL OF FISHERIES (IRANIAN JOURNAL OF NATURAL RESOURCES), vol. 69, no. 4 , pp. 496–505, 2017, [Online]. Available: https://sid.ir/paper/162193/en

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