Improved performance of larval Penaeus vannamei Boone, 1931 production fed with Thalassiosira pseudonana Hasle and Heimdal, 1970 cultured with light-emitting diodes (LED) compared to fluorescent light.

Autor: Bravo-Montesdeoca, María Guadalupe, Lodeiros, César, Zapata-Vívenes, Edgar, Alió, José Javier
Zdroj: Journal of Applied Phycology; Feb2024, Vol. 36 Issue 1, p233-241, 9p
Abstrakt: The nutritional quality of microalgae used as feed in larviculture is essential to improve shrimp production. Penaeus vannamei larvae were fed with the microalga Thalassiosira pseudonana produced with irradiation by light-emitting diode (LED) or fluorescent lights and evaluated for survival, weight, and molting time from Nauplius V to Zoea III. At the harvest production level, the microalgae density and biomass were estimated, and total lipid content and fatty acids profile as nutritional quality were evaluated. The density of the microalgae did not differ significantly, but biomass and the content of lipids with LED lights were significantly higher (0.27±0.05 mg L-1, 17.11±7.30%) in comparison with fluorescent lights (0.17±0.05 mg L-1, 4.7±1.2%). Docosahexaenoic acid and docosapentaenoic acid concentrations were higher in the microalgae produced with LED, however eicosapentaenoic acid and ten other fatty acids did not differ between treatments. The average individual weight of Zoea III differed between treatments (LED lights = 7.9±0.6 μg and fluorescent lights = 6.3±0.5 μg), and the molting time to Zoea III was 9 h shorter when fed with microalgae from LED, while survival was higher at 83.9±0.9% LED versus 78.4±1.5% fluorescent lights. The nutritional quality of fatty acids and lipids from T. pseudonana under exposure to LED lights improves the production and performance of P. vannamei zoeal larvae than when fed with T. pseudonana irradiated with fluorescent lights. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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