Fatty acid degradation of PUFA in gut-evacuated Artemia strains
In: Aquaculture International. Springer: London. ISSN 0967-6120; e-ISSN 1573-143X, more
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| Keyword |
Artemia Leach, 1819 [WoRMS]
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| Author keywords |
Live feed · Enrichment · PUFA · Degradation · Fatty acid |
| Authors | | Top |
- Lourenço, T.M., more
- Abatih, E.
- Bossier, P., more
- Declercq, A.M., more
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| Abstract |
Aquaculture is the world’s fastest-growing food production sector, yet larviculture remains a problem due to inconsistent live feed quality. Although Artemia is the most used live feed due to its availability and broad species acceptance, its nutritional quality varies across strains and batches. Thus, optimizing Artemia nutritional profile is crucial. To enhance nutritional reliability, Artemia is commonly enriched. However, strain-dependent enrichment responses and FA degradation mechanisms remain unclear. This study aims to elucidate PUFA degradation dynamics in Artemia, evaluating the effects of enrichment, strain differences, and temperature regimes. Nauplii from three Artemia strains—Vinh Chau (VC), Great Salt Lake (GSL), and San Francisco Bay (SFB)—were hatched under controlled conditions. The treatment group was enriched, while the control remained unenriched. After gut evacuation, animals were stored at 27 ± 1 °C or 16 ± 1 °C. Fatty acid methyl ester (FAME) analysis was performed at multiple time points. Forty-two FAs were identified across strains, and degradation slopes were calculated. Comparisons were made within the same strain between enriched and unenriched nauplii and temperatures to assess enrichment and temperature effects, respectively, and across strains within the same temperature and enrichment conditions to determine strain-specific PUFA degradation patterns. Results indicate that both enrichment and strain significantly affect Artemia FA profiles, with n-3 PUFAs responding best to enrichment. VC and SFB showed greater adaptability in FA metabolism, particularly under enrichment and high temperatures. These findings underscore the complex interplay between enrichment, temperature, and genetic factors in determining Artemia’s nutritional quality, providing key insights for optimizing live feed strategies in aquaculture. |
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