Comparison of Different Microalgae Biomass Typologies Used in Rotifers Enrichment for Zebrafish (Danio rerio) Larvae Nutrition

IF 3 2区农林科学 Q1 FISHERIES

Aquaculture Nutrition Pub Date : 2025-06-06 DOI:10.1155/anu/5351038

Daniela T. de Castro, Matthew Castaldi, Gil Martins, Tamára Santos, Hugo Pereira, Patrícia Diogo, João Varela, Paulo J. Gavaia

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Abstract

The use of enriched rotifers with industrially produced microalgae represents a valuable tool for the enhancement of zebrafish larval nutrition and increased biological performance. Currently, a monoculture of microalgal species (Nannochloropsis sp.) in form of liquid paste is routinely used for rotifers enrichment for zebrafish larvae feeding; however, the most adequate typology (i.e., paste or freeze-dried) of the industrially produced microalgal biomass is still controversial. This work aimed to compare the effects of rotifers enriched with three different industrially produced microalgae species (i.e., Nannochloropsis oceanica, Tetraselmis chui, and Tisochrysis lutea) using paste and freeze-dried powder. Enriched rotifers were provided as feed during larval growth and the impact on growth and survival was evaluated. The use of enriched rotifers with both paste or freeze-dried microalgae improved growth compared to larvae fed exclusively with commercial microdiet. Larvae fed rotifers enriched with N. oceanica and T. chui attained higher weight and length both at 15 and 30 days postfertilization (dpf), while the use of microalgae in paste contributed to greater larvae lengths when compared to freeze-dried. The experimental results in this study revealed that N. oceanica and T. chui in paste are the most suitable microalgae forms to be used in zebrafish larvae nutrition and in the improvement of enrichment methodologies for rotifers.

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不同微藻生物量类型在斑马鱼（Danio rerio）幼虫营养中轮虫富集的比较

在工业生产的微藻中使用富集的轮虫是提高斑马鱼幼虫营养和提高生物性能的有价值的工具。目前，微藻物种（纳米绿藻sp.）以液体糊状的形式被常规用于轮虫的富集，以供斑马鱼幼虫喂养；然而，工业生产的微藻生物量的最适当的类型（即糊状或冻干）仍然存在争议。本研究旨在比较三种不同的工业生产微藻（即Nannochloropsis oceanica， Tetraselmis chui和Tisochrysis lutea）使用膏体和冻干粉对轮虫的影响。在幼虫生长过程中以富集的轮虫作为饲料，评价其对幼虫生长和存活的影响。与仅饲喂商业微藻饲料的幼虫相比，使用含有膏状微藻或冻干微藻的富集轮虫可以改善其生长。在受精后15天和30天，施用海洋微藻和赤潮微藻的幼虫体重和体长均高于施用冻干微藻，而施用微藻膏的幼虫体长高于施用冻干微藻膏。本研究的实验结果表明，在斑马鱼幼体营养和轮虫富集方法的改进中，海洋微藻和chui微藻是最适合的微藻形态。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Aquaculture Nutrition 农林科学-渔业

CiteScore

7.20

自引率

8.60%

发文量

131

审稿时长

3 months

期刊介绍： Aquaculture Nutrition is published on a bimonthly basis, providing a global perspective on the nutrition of all cultivated aquatic animals. Topics range from extensive aquaculture to laboratory studies of nutritional biochemistry and physiology. The Journal specifically seeks to improve our understanding of the nutrition of aquacultured species through the provision of an international forum for the presentation of reviews and original research papers. Aquaculture Nutrition publishes papers which strive to: increase basic knowledge of the nutrition of aquacultured species and elevate the standards of published aquaculture nutrition research. improve understanding of the relationships between nutrition and the environmental impact of aquaculture. increase understanding of the relationships between nutrition and processing, product quality, and the consumer. help aquaculturalists improve their management and understanding of the complex discipline of nutrition. help the aquaculture feed industry by providing a focus for relevant information, techniques, tools and concepts.