Biofloc contribution to antioxidant defence status, lipid nutrition and reproductive performance of broodstock of the shrimp Litopenaeus stylirostris: Consequences for the quality of eggs and larvae

Type Article
Date 2016-02
Language English
Author(s) Cardona Emilie1, 2, Lorgeoux Benedicte1, Chim Liet2, Goguenheim Jean1, Le Delliou Herve3, Cahu Chantal3
Affiliation(s) 1 : IFREMER, Ctr Oceanol Pacifique, Unite Rech Ressources Marines, Taravao 98719, Fr Polynesia.
2 : IFREMER, Unite Rech Lagons Ecosyst & Aquaculture Durable N, Noumea 98846, New Caledonia.
3 : IFREMER, Ctr Brest, Physiol Fonct Organismes Marins, UMR LEMAR 6539, F-29280 Plouzane, France.
Source Aquaculture (0044-8486) (Elsevier Science Bv), 2016-02 , Vol. 452 , P. 252-262
DOI 10.1016/j.aquaculture.2015.08.003
WOS© Times Cited 14
Keyword(s) Biofloc technology, Shrimp broodstock culture, Litopenaeus stylirostris, Reproductive performance, Antioxidant defences, Fatty acids, Larval survival
Abstract The aim of this study was to determine biofloc contributions to the antioxidant status and lipid nutrition of broodstock of Litopenaeus stylirostris in relationship with their reproductive performance and the health of larvae produced. Shrimp broodstock reared with Biofloc technology (BFT) compared to Clear water (CW) exhibited a higher health status with (i) a better final survival rate during the reproduction period (52.6% in CW against 79.8% in BFT); (ii) higher glutathione level (GSH) and total antioxidant status (TAS), reduced oxidized/reduced glutathione ratio and a higher spawning rate and frequency as well as higher gonado-somatic index and number of spawned eggs. Finally, larvae from broodstock from BFT exhibited higher survival rates at the Zoe 2 (+ 37%) and Post Larvae 1 (+ 51%) stages when compared with those from females from CW treatment. The improved reproductive performance of the broodstock and higher larvae survival rate resulting from BFT treatment may be linked to the dietary supplement obtained by the shrimp from natural productivity during BFT rearing. Indeed, our study confirms that biofloc particulates represent a potential source of dietary glutathione and a significant source of lipids, particularly essential phospholipids and n-3 highly unsaturated fatty acids (HUFA) for shrimps. Thus, broodstock from BFT treatment accumulated phospholipids, n-3 HUFA and arachidonic acid, which are necessary for vitellogenesis, embryogenesis and pre-feeding larval development. The predominant essential fatty acids, arachidonic acid (ARA), eicopentaeonic acid (EPA) and docosahexaenoic acid (DHA), had levels in the eggs that were, respectively, 2.5, 2.8 and 3 fold higher for BFT compared to the CW treatment.
Statement of Relevance

Today, the influence of biofloc technology on shrimp broodstock is not enough described and no information was available on the larvae quality.

Moreover, two key pieces of new information emerge from the present study. Firstly, biofloc is a source of further dietary lipids that can act as energetic substrates, but also as a source of phospholipids and essential fatty acids necessary to sustain reproduction, embryonic and larval development. Second, improving the reproduction of the broodstock also leads to an improvement in the quality of the larvae.

We think that our research is new and important to increase knowledge on biofloc topic. We believe the paper will contribute to the development of more efficient and therefore more sustainable systems.
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Cardona Emilie, Lorgeoux Benedicte, Chim Liet, Goguenheim Jean, Le Delliou Herve, Cahu Chantal (2016). Biofloc contribution to antioxidant defence status, lipid nutrition and reproductive performance of broodstock of the shrimp Litopenaeus stylirostris: Consequences for the quality of eggs and larvae. Aquaculture, 452, 252-262. Publisher's official version : https://doi.org/10.1016/j.aquaculture.2015.08.003 , Open Access version : https://archimer.ifremer.fr/doc/00275/38618/