Effects of different dietary vitamin A levels in the red shrimp Pleoticus muelleri (Bate, 1888) (Decapoda, Solenoceridae)

Growth, survival, changes in the hepatopancreatic cell morphology, and digestive proteinase activity were evaluated in the red shrimp Pleoticus muelleri (Bate, 1888). A six-week trial was carried out with juveniles of P. muelleri in aquaria. Animals were fed with semi-purified diets with different l...

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Autores principales:	Fernández Gimenez,Analía V, Díaz,Ana C, Velurtas,Susana M, Petriella,Ana M, Fenucci,Jorge L
Lenguaje:	English
Publicado:	Universidad de Valparaíso. Facultad de Ciencias del Mar 2008
Materias:	Crustacea growth hepatopancreas nutrition culture
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572008000300007
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spelling	oai:scielo:S0718-195720080003000072009-04-09Effects of different dietary vitamin A levels in the red shrimp Pleoticus muelleri (Bate, 1888) (Decapoda, Solenoceridae)Fernández Gimenez,Analía VDíaz,Ana CVelurtas,Susana MPetriella,Ana MFenucci,Jorge L Crustacea growth hepatopancreas nutrition culture Growth, survival, changes in the hepatopancreatic cell morphology, and digestive proteinase activity were evaluated in the red shrimp Pleoticus muelleri (Bate, 1888). A six-week trial was carried out with juveniles of P. muelleri in aquaria. Animals were fed with semi-purified diets with different levels of vitamin A (140, 160 and 180 mg vitamin A kg-1 diet). No differences in survival and weight gain of shrimp were observed among any of the dietary treatments under the experimental conditions. Histological results yielded differences among treatments. In shrimp fed 180 mg kg-1, the functional morphology of the hepatopancreas was normal. Consistent changes with signs of malnourishment, such as cellular hyperplasia and hypertrophy, disorganized tissue, and shrinkage of cells, were evident in the organ of shrimp fed the other diets. The highest proteinase activity was recorded with diets 140 and 160 mg kg-1 and a significant decrease was observed with 180 mg kg-1. It can be stated that optimal level of vitamin A in diets for P. muelleri is 180 mg kg-1 and under malnourishment the hepatopancreas presents structural changes and alterations in protease activity.info:eu-repo/semantics/openAccessUniversidad de Valparaíso. Facultad de Ciencias del MarRevista de biología marina y oceanografía v.43 n.3 20082008-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572008000300007en10.4067/S0718-19572008000300007
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Crustacea growth hepatopancreas nutrition culture
spellingShingle	Crustacea growth hepatopancreas nutrition culture Fernández Gimenez,Analía V Díaz,Ana C Velurtas,Susana M Petriella,Ana M Fenucci,Jorge L Effects of different dietary vitamin A levels in the red shrimp Pleoticus muelleri (Bate, 1888) (Decapoda, Solenoceridae)
description	Growth, survival, changes in the hepatopancreatic cell morphology, and digestive proteinase activity were evaluated in the red shrimp Pleoticus muelleri (Bate, 1888). A six-week trial was carried out with juveniles of P. muelleri in aquaria. Animals were fed with semi-purified diets with different levels of vitamin A (140, 160 and 180 mg vitamin A kg-1 diet). No differences in survival and weight gain of shrimp were observed among any of the dietary treatments under the experimental conditions. Histological results yielded differences among treatments. In shrimp fed 180 mg kg-1, the functional morphology of the hepatopancreas was normal. Consistent changes with signs of malnourishment, such as cellular hyperplasia and hypertrophy, disorganized tissue, and shrinkage of cells, were evident in the organ of shrimp fed the other diets. The highest proteinase activity was recorded with diets 140 and 160 mg kg-1 and a significant decrease was observed with 180 mg kg-1. It can be stated that optimal level of vitamin A in diets for P. muelleri is 180 mg kg-1 and under malnourishment the hepatopancreas presents structural changes and alterations in protease activity.
author	Fernández Gimenez,Analía V Díaz,Ana C Velurtas,Susana M Petriella,Ana M Fenucci,Jorge L
author_facet	Fernández Gimenez,Analía V Díaz,Ana C Velurtas,Susana M Petriella,Ana M Fenucci,Jorge L
author_sort	Fernández Gimenez,Analía V
title	Effects of different dietary vitamin A levels in the red shrimp Pleoticus muelleri (Bate, 1888) (Decapoda, Solenoceridae)
title_short	Effects of different dietary vitamin A levels in the red shrimp Pleoticus muelleri (Bate, 1888) (Decapoda, Solenoceridae)
title_full	Effects of different dietary vitamin A levels in the red shrimp Pleoticus muelleri (Bate, 1888) (Decapoda, Solenoceridae)
title_fullStr	Effects of different dietary vitamin A levels in the red shrimp Pleoticus muelleri (Bate, 1888) (Decapoda, Solenoceridae)
title_full_unstemmed	Effects of different dietary vitamin A levels in the red shrimp Pleoticus muelleri (Bate, 1888) (Decapoda, Solenoceridae)
title_sort	effects of different dietary vitamin a levels in the red shrimp pleoticus muelleri (bate, 1888) (decapoda, solenoceridae)
publisher	Universidad de Valparaíso. Facultad de Ciencias del Mar
publishDate	2008
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-19572008000300007
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Effects of different dietary vitamin A levels in the red shrimp Pleoticus muelleri (Bate, 1888) (Decapoda, Solenoceridae)

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