Scholarlink

<p>Mass culture of <i>Artemia</i> sp. requires suitable feed, commonly microalgae, the production of which is a high-cost process. Moreover, in marine aquaculture <i>Artemia</i> sp. enrichment protocols are imperative to increase the content in the essential n-3 highly unsaturated fatty acids (HUFA), required for marine fish. The insect <i>Tenebrio molitor</i> appears as a sustainable alternative protein source for aquaculture feeds. In this study, the capacity of insect-based diets to enhance survival, growth, and nutritional composition of <i>Artemia franciscana</i> was assessed by preparing five different <i>T. molitor</i> emulsions with increasing amounts of insect powder of 5, 10, 15, 20, or 25% (w/w) corresponding to TM5, TM10, TM15, TM20, and TM25 feeds, in comparison with a yeast diet. Our results showed that all <i>T. molitor-</i>based diets except TM25 supported survival. The TM20 feed provided the best results in terms of metanauplii nutritional value, growth rate, and feed conversion efficiency. The TM20 group metanauplii presented significantly higher fatty acids content, mainly regarding palmitic, palmitoleic, oleic, linoleic, eicosapentaenoic, and docosahexaenoic acids, and a lower n-3 to n-6 ratio, compared to control fed on yeast. Moreover, an experimental infection of the TM20 <i>A. franciscana</i> group with <i>Photobacterium damselae</i> ssp. <i>piscicida</i> or <i>Vibrio (Listonella) anguillarum</i>, resulted in significantly increased metanauplii survival, nutritional content, and fatty acids content compared to the infection group. Our findings confirm the potential use of <i>T. molitor</i> as a suitable, low-cost, and environmentally friendly alternative feed to be used in the mass culture of <i>Artemia</i> sp.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Mealworm larvae promote Artemia franciscana metanauplii nutritional status and survival against marine aquaculture pathogens

  • 期刊论文

  • 发表日期：

    2025年1月2日

查看全文
  • Maria Touraki,
  • Christina Thoda,
  • Aikaterini Telaki

摘要

Mass culture of Artemia sp. requires suitable feed, commonly microalgae, the production of which is a high-cost process. Moreover, in marine aquaculture Artemia sp. enrichment protocols are imperative to increase the content in the essential n-3 highly unsaturated fatty acids (HUFA), required for marine fish. The insect Tenebrio molitor appears as a sustainable alternative protein source for aquaculture feeds. In this study, the capacity of insect-based diets to enhance survival, growth, and nutritional composition of Artemia franciscana was assessed by preparing five different T. molitor emulsions with increasing amounts of insect powder of 5, 10, 15, 20, or 25% (w/w) corresponding to TM5, TM10, TM15, TM20, and TM25 feeds, in comparison with a yeast diet. Our results showed that all T. molitor-based diets except TM25 supported survival. The TM20 feed provided the best results in terms of metanauplii nutritional value, growth rate, and feed conversion efficiency. The TM20 group metanauplii presented significantly higher fatty acids content, mainly regarding palmitic, palmitoleic, oleic, linoleic, eicosapentaenoic, and docosahexaenoic acids, and a lower n-3 to n-6 ratio, compared to control fed on yeast. Moreover, an experimental infection of the TM20 A. franciscana group with Photobacterium damselae ssp. piscicida or Vibrio (Listonella) anguillarum, resulted in significantly increased metanauplii survival, nutritional content, and fatty acids content compared to the infection group. Our findings confirm the potential use of T. molitor as a suitable, low-cost, and environmentally friendly alternative feed to be used in the mass culture of Artemia sp.