Effect of the application of β-glucans and mannan-oligosaccharides (βG MOS) in an intensive larval rearing system of Paralichthys adspersus (Paralichthydae)

For successful rearing of the flounder Paralichthys adspersus, it is important to optimize growth and survival in the early larval stages. Several authors indicate that the application of β-glucans and mannan-oligosaccharides (βG MOS) in rearing water should improve the larval heal...

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Autores principales:	Piaget,Nicole, Vega,Alonso, Silva,Alfonso, Toledo,Pedro
Lenguaje:	English
Publicado:	Escuela de Ciencias del Mar. Pontificia Universidad Católica de Valparaíso 2007
Materias:	Paralichthys adspersus flounder larval rearing growth rate survival B-glucan and mannan-oligosaccharides immunestimulants
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-71782007000200004
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spelling	oai:scielo:S0717-717820070002000042008-01-31Effect of the application of β-glucans and mannan-oligosaccharides (βG MOS) in an intensive larval rearing system of Paralichthys adspersus (Paralichthydae)Piaget,NicoleVega,AlonsoSilva,AlfonsoToledo,Pedro Paralichthys adspersus flounder larval rearing growth rate survival B-glucan and mannan-oligosaccharides immunestimulants For successful rearing of the flounder Paralichthys adspersus, it is important to optimize growth and survival in the early larval stages. Several authors indicate that the application of β-glucans and mannan-oligosaccharides (βG MOS) in rearing water should improve the larval health, diminishing the effects of physiological stress and physical damage that the aquaculture activities cause to the individuals. In order to evaluate the effect of βG MOS on P. adspersus incorporation on P. adspersus larval survival and growth in intensive culture, experiments were carried out with six-days post-hatch larvae, which had only just begun to feed on live prey (rotifers), and fifteen-day post-hatch larvae. Three treatments were used, applying 5 mg.L-1, 10 mg.L-1, and 15 mg.L-1 of βG MOS to the rearing water during the first five days of the experiment and then comparing the results with a control. The results indicate that applications of 5 mg.L-1 of βG MOS in the rearing water enhance larval survival and growth with respect to the control, whereas additions of 15 mg.L-1 of βG MOS suppressed both of these parameters. This effect increases for larvae that have recently absorbed the yolk sac. An histological analysis of the intestinal epithelium of the larvae suggests that βG MOS promotes the expression of monocytes (forerunner cells of macrophages) associated with the non-specific immune system of the fishinfo:eu-repo/semantics/openAccessEscuela de Ciencias del Mar. Pontificia Universidad Católica de ValparaísoInvestigaciones marinas v.35 n.2 20072007-11-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-71782007000200004en10.4067/S0717-71782007000200004
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Paralichthys adspersus flounder larval rearing growth rate survival B-glucan and mannan-oligosaccharides immunestimulants
spellingShingle	Paralichthys adspersus flounder larval rearing growth rate survival B-glucan and mannan-oligosaccharides immunestimulants Piaget,Nicole Vega,Alonso Silva,Alfonso Toledo,Pedro Effect of the application of β-glucans and mannan-oligosaccharides (βG MOS) in an intensive larval rearing system of Paralichthys adspersus (Paralichthydae)
description	For successful rearing of the flounder Paralichthys adspersus, it is important to optimize growth and survival in the early larval stages. Several authors indicate that the application of β-glucans and mannan-oligosaccharides (βG MOS) in rearing water should improve the larval health, diminishing the effects of physiological stress and physical damage that the aquaculture activities cause to the individuals. In order to evaluate the effect of βG MOS on P. adspersus incorporation on P. adspersus larval survival and growth in intensive culture, experiments were carried out with six-days post-hatch larvae, which had only just begun to feed on live prey (rotifers), and fifteen-day post-hatch larvae. Three treatments were used, applying 5 mg.L-1, 10 mg.L-1, and 15 mg.L-1 of βG MOS to the rearing water during the first five days of the experiment and then comparing the results with a control. The results indicate that applications of 5 mg.L-1 of βG MOS in the rearing water enhance larval survival and growth with respect to the control, whereas additions of 15 mg.L-1 of βG MOS suppressed both of these parameters. This effect increases for larvae that have recently absorbed the yolk sac. An histological analysis of the intestinal epithelium of the larvae suggests that βG MOS promotes the expression of monocytes (forerunner cells of macrophages) associated with the non-specific immune system of the fish
author	Piaget,Nicole Vega,Alonso Silva,Alfonso Toledo,Pedro
author_facet	Piaget,Nicole Vega,Alonso Silva,Alfonso Toledo,Pedro
author_sort	Piaget,Nicole
title	Effect of the application of β-glucans and mannan-oligosaccharides (βG MOS) in an intensive larval rearing system of Paralichthys adspersus (Paralichthydae)
title_short	Effect of the application of β-glucans and mannan-oligosaccharides (βG MOS) in an intensive larval rearing system of Paralichthys adspersus (Paralichthydae)
title_full	Effect of the application of β-glucans and mannan-oligosaccharides (βG MOS) in an intensive larval rearing system of Paralichthys adspersus (Paralichthydae)
title_fullStr	Effect of the application of β-glucans and mannan-oligosaccharides (βG MOS) in an intensive larval rearing system of Paralichthys adspersus (Paralichthydae)
title_full_unstemmed	Effect of the application of β-glucans and mannan-oligosaccharides (βG MOS) in an intensive larval rearing system of Paralichthys adspersus (Paralichthydae)
title_sort	effect of the application of β-glucans and mannan-oligosaccharides (βg mos) in an intensive larval rearing system of paralichthys adspersus (paralichthydae)
publisher	Escuela de Ciencias del Mar. Pontificia Universidad Católica de Valparaíso
publishDate	2007
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-71782007000200004
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Effect of the application of &#946;-glucans and mannan-oligosaccharides (&#946;G MOS) in an intensive larval rearing system of Paralichthys adspersus (Paralichthydae)

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