Administration of Yeast Glucan on Immunity of Offspring in Turbot Scophthalmus maximus: A Trans-Generational Immune-Enhancing Effect

• Published in: Journal of Ocean University of China 2019-10, Vol.18 (4), p.997-1003
• Main Authors: Jiang, Chengyan, Wang, Peng, Liu, Shousheng, Wang, Yanfeng, Li, Jun, Ji, Guangdong
• Format: Article
• Language: English
• Subjects: Animal embryos; Aquaculture; Diet; Dietary intake; Earth and Environmental Science; Earth Sciences; Eggs; Embryogenesis; Embryonic development; Embryonic growth stage; Embryos; Fish; Fish eggs; Fish larvae; Freshwater; Freshwater fish; Glucan; Immunity; Inland water environment; Larvae; Lysozyme; Marine aquaculture; Marine fish; Marine fishes; Meteorology; Oceanography; Offspring; Scophthalmus maximus; Serum; Survival; Yeast; Yeasts; β-Glucan
• ISSN: 1672-5182; 1993-5021; 1672-5174
• DOI: 10.1007/s11802-019-3767-z

β-glucan has been shown to increase immunity and survival in various juvenile and adult fish both in freshwater and marine aquaculture species as well as in marine fish larvae. However, information about the trans-generational immune-enhancing effects of β-glucan remains rather limited. Here we clearly show that dietary intake of β-glucan enhanced the levels of C3, Bf and lysozyme in the serum of turbot as well as in their eggs released. We also show that yeast glucan induced a significant increase in lysozyme activity in both the serum and eggs. Moreover, the embryos derived from yeast glucan-treated turbot were more resistant to bacterial challenge than control embryos. By contrast, the administration of yeast glucan on female turbots had little influence on the egg development and embryonic development. Collectively, these data indicate that yeast glucan can be safely used to promote the non-specific trans-generational immunity in offspring of turbot.