Study on the live food electivity indices of Persian sturgeon Acipenser persicus Borodin, 1897 fry in earthen ponds

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OMIDVAR Z.; JAFARYAN H.; AGHILINEJAD M.

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Journal: JOURNAL OF APPLIED ICHTHYOLOGICAL RESEARCH Year:2020 | Volume:7 | Issue:4 Page(s): 92-102

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Title

Study on the live food electivity indices of Persian sturgeon Acipenser persicus Borodin, 1897 fry in earthen ponds

Author(s)

OMIDVAR Z. | JAFARYAN H. | AGHILINEJAD M. | Issue Writer Certificate

Keywords

A.persicus

electivity index

live food

earthen pond

Abstract

This study carried out to investigate the live food selectivity of Persian sturgeon (A. persicus) fry in six treatments in four earthen ponds during spring 2013 for 40 days. For this purpose, sampling was performed from zooplankton and benthos of earthen ponds and stomach content of 240 fry. In order to determine the electivity index for each prey item, the abundance of prey in the stomach and earthen ponds was investigated. The range of electivity was from-1 to 1, where 1 indicates positive selection for prey items and-1 indicates avoidance of prey items and zero shows random selection. The frequency of rotifer and daphnia were 172. 6 and 123. 8, respectively, and they were dominant among the six aquatic animals at treatment 6. The chironomid larvae (Chironomus sp. ) had the highest frequency of 40. 25 in the third sampling. Although the content of the stomach was daphnia, diaptomus, chironomid larvae (Chironomus sp. ), daphnia, and chironomid larvae were the dominant organisms. The highest positive electivity of daphnia (0. 83) was observed in treatment 3, while, the highest frequency of chironomid (0. 59) was detected in treatment 6. After 30 days, a strong positive selection for chironomid and weak positive selection was observed for daphnia.

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APA: Copy

OMIDVAR, Z., JAFARYAN, H., & AGHILINEJAD, M.. (2020). Study on the live food electivity indices of Persian sturgeon Acipenser persicus Borodin, 1897 fry in earthen ponds. JOURNAL OF APPLIED ICHTHYOLOGICAL RESEARCH, 7(4 ), 92-102. SID. https://sid.ir/paper/648798/en

Vancouver: Copy

OMIDVAR Z., JAFARYAN H., AGHILINEJAD M.. Study on the live food electivity indices of Persian sturgeon Acipenser persicus Borodin, 1897 fry in earthen ponds. JOURNAL OF APPLIED ICHTHYOLOGICAL RESEARCH[Internet]. 2020;7(4 ):92-102. Available from: https://sid.ir/paper/648798/en

IEEE: Copy

Z. OMIDVAR, H. JAFARYAN, and M. AGHILINEJAD, “Study on the live food electivity indices of Persian sturgeon Acipenser persicus Borodin, 1897 fry in earthen ponds,” JOURNAL OF APPLIED ICHTHYOLOGICAL RESEARCH, vol. 7, no. 4 , pp. 92–102, 2020, [Online]. Available: https://sid.ir/paper/648798/en

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