Short‐term enrichment of microalgae with inorganic selenium and zinc and their effects on the mineral composition of microalgae and marine rotifer Brachionus plicatilis. (12th November 2021)

• Record Type: Journal Article
• Authors: Ghaderpour, Sirwe; Ahmadifard, Nasrollah; Agh, Naser; Vahabzadeh, Zakaria; Estevez, Alicia
• Is Part Of: Aquaculture nutrition. Volume 27:Number 6(2021)
• Page Start: 2772
• Page End: 2785
• Publication Date: 2021-11-12
• Subjects: enrichment -- growth -- live feed -- microalgae -- minerals -- rotifer; Aquaculture -- Periodicals; Aquatic animals -- Feeding and feeds -- Periodicals; Fishes -- Feeding and feeds -- Periodicals; 639.3
• DOI: 10.1111/anu.13406
• Languages: English
• ISSNs: 1353-5773

Abstract

Abstract: Rotifers are widely used as a live prey for finfish larvae, although their content in minerals such as selenium and zinc is lower than in fish. In the present study, mixed microalgae (i.e., Isochrysis aff. galbana and Nannochloropsis oculata ) were enriched with different amounts of Se and Zn either alone (45, 90, and 135 mg L −1 of Zn, 60, 120, and 180 mg L −1 of Se) or mixed (22.5, 45, and 90 mg Zn L −1 and 30, 60, and 120 mg Se L −1 ). The content of minerals in the microalgae was analysed after 1 and 3 h enrichment and their effect on the growth and mineral composition of the rotifer. Based on the results, 1 h enrichment time and 90 and 120 mg L −1 of Zn and Se, respectively, resulted in the highest amount of Se and Zn in enriched microalgae. The maximum Zn content was detected in the rotifers fed 90 mg L −1 Zn and 90 mg L −1 Zn +120 mg L −1 of Se, but the maximum Se was observed in rotifers fed with 120 and 180 mg L −1 Se. Thus, Se‐ and Zn‐enriched rotifers can be used as a mineral delivery method to cover marine fish larvae nutritional requirements.