INVESTIGATE THE ABUNDANCE AND LIVE FOOD SELECTION BY THE PERSIAN STURGEON (ACIPENSER PERSICUS) FRY IN EARTHEN PONDS OF MARJANI CENTER

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OMIDVAR Z.; JAFARYAN H.; OMIDVAR S.

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Journal: Journal of Aquaculture Development Year:2015 | Volume:9 | Issue:2 Page(s): 13-22

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Title

INVESTIGATE THE ABUNDANCE AND LIVE FOOD SELECTION BY THE PERSIAN STURGEON (ACIPENSER PERSICUS) FRY IN EARTHEN PONDS OF MARJANI CENTER

Author(s)

OMIDVAR Z. | JAFARYAN H. | OMIDVAR S. | Issue Writer Certificate

Keywords

LIVE FOODQ2

PERSIAN STURGEONQ2

FOOD SELECTIONQ2

FOOD ORGANISMQ2

CHIRONOMIDAE LARVAEQ2

Abstract

Present study identified and investigated the abundance types of LIVE FOOD in the earthen ponds of PERSIAN STURGEON fry and stomach contents of 240 pieces of them. How to select of food by fry, according to the FOOD SELECTION index for each FOOD ORGANISM in six time of sampling were studied in earthen ponds. For this purpose sampled from zooplankton and benthos of Ponds and stomach contents of PERSIAN STURGEON fry. The FOOD SELECTION index range from -1 to 1. Between the LIVE FOODs that observed in ponds, Rotifer, and Daphnia were dominated with an abundance 172.6, 123.8 (number/m3) in sixth time sampling. The CHIRONOMIDAE LARVAE had a highest level of abundance 40.25 (number/m2) in third time sampling. positive selection index showed the highest rate of Daphnia (0.83) in third time and for Chironomidae (0.59) it was in sixth time. To investigate the relationship between the abundance of FOOD ORGANISMs and FOOD SELECTION index correlation coefficient (R) in the Pearson correlation coefficient test was used. Abundance of Daphnia ponds and FOOD SELECTION at 0.01 percent level showed a significant positive correlation (R= -0.939), while between the abundance of Daphnia stomach contents and index FOOD SELECTION, didnʼt observe significant correlation (R= -0.094). There wasnʼt a positive correlation significant between the abundance of CHIRONOMIDAE LARVAE in ponds and FOOD SELECTION index (R= -0.079), while observed significant positive correlation between the abundance of Chironomidae in stomach contents and FOOD SELECTION index at 0.05 percent level (R= 0.884). The results persent study showed that, Daphnia and CHIRONOMIDAE LARVAE were dominant foods in stomach contents and were selected by fry. Rotifer and Naply of Copepoda didnʼt observe in Stomach contents. The composition of PERSIAN STURGEON fry diet in ponds was characterised by high proportion of CHIRONOMIDAE LARVAE, which corresponds to the benthivorous feeding habits in this species and was supported by the results of the FOOD SELECTION index.

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APA: Copy

OMIDVAR, Z., JAFARYAN, H., & OMIDVAR, S.. (2015). INVESTIGATE THE ABUNDANCE AND LIVE FOOD SELECTION BY THE PERSIAN STURGEON (ACIPENSER PERSICUS) FRY IN EARTHEN PONDS OF MARJANI CENTER. JOURNAL OF AQUACULTURE DEVELOPMENT, 9(2), 13-22. SID. https://sid.ir/paper/241971/en

Vancouver: Copy

OMIDVAR Z., JAFARYAN H., OMIDVAR S.. INVESTIGATE THE ABUNDANCE AND LIVE FOOD SELECTION BY THE PERSIAN STURGEON (ACIPENSER PERSICUS) FRY IN EARTHEN PONDS OF MARJANI CENTER. JOURNAL OF AQUACULTURE DEVELOPMENT[Internet]. 2015;9(2):13-22. Available from: https://sid.ir/paper/241971/en

IEEE: Copy

Z. OMIDVAR, H. JAFARYAN, and S. OMIDVAR, “INVESTIGATE THE ABUNDANCE AND LIVE FOOD SELECTION BY THE PERSIAN STURGEON (ACIPENSER PERSICUS) FRY IN EARTHEN PONDS OF MARJANI CENTER,” JOURNAL OF AQUACULTURE DEVELOPMENT, vol. 9, no. 2, pp. 13–22, 2015, [Online]. Available: https://sid.ir/paper/241971/en

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