Effect of fasting on freshwater angelfish Pterophyllum scalare (Lichtenstein; Pisces: Cichlidae) development

ABSTRACT We tested the effect of fasting on the development of juvenile freshwater angelfish (Pterophyllum scalare). The juveniles were subjected to different fasting periods (0, 3, 6, 9, 12, and 15 days of fasting). Fish from all treatments were fed for 30 days after the fasting period. No differen...

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Autores principales:	Motta,Jonas Henrique, Glória,Leonardo, Souza,André Batista de, Fosse Filho,joão Carlos, Polese,Marcelo, Vidal Jr.,Manuel
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2021
Materias:	Pterophyllum scalare Cichlidae food deprivation hepatocytes phenotypic plasticity aquaculture
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2021000100125
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spelling	oai:scielo:S0718-560X20210001001252021-03-22Effect of fasting on freshwater angelfish Pterophyllum scalare (Lichtenstein; Pisces: Cichlidae) developmentMotta,Jonas HenriqueGlória,LeonardoSouza,André Batista deFosse Filho,joão CarlosPolese,MarceloVidal Jr.,Manuel Pterophyllum scalare Cichlidae food deprivation hepatocytes phenotypic plasticity aquaculture ABSTRACT We tested the effect of fasting on the development of juvenile freshwater angelfish (Pterophyllum scalare). The juveniles were subjected to different fasting periods (0, 3, 6, 9, 12, and 15 days of fasting). Fish from all treatments were fed for 30 days after the fasting period. No difference (P > 0.05) was observed between treatments for final weight and length. There was a significant difference (P < 0.05) in treatments 12 and 15 days fasting for liver and intestine weight. These results may prove that 12 and 15 days of fasting force juveniles to use energy reserves, and these adaptations may also represent a saving energy strategy. The fish subjected to treatments 6, 9, 12, and 15 days of fasting showed different vacuolization in hepatocytes from the ones subjected to 0 and 3 days of fasting (P < 0.05). These results show that during the lack of feeding, juveniles (P. scalare) mobilizes energy stored in the liver. No difference (P > 0.05) was observed between treatments for survival rate. However, the increase in the number of deaths from the eighth day of fasting may indicate that periods with more than 15 days of fasting could be fatal to this species during this life stage. According to our findings, it can be assumed that juvenile freshwater angelfishes have strategies (e.g. a decrease in liver and intestine weight) to resist 15 days of fasting.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.49 n.1 20212021-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2021000100125en10.3856/vol49-issue1-fulltext-2499
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Pterophyllum scalare Cichlidae food deprivation hepatocytes phenotypic plasticity aquaculture
spellingShingle	Pterophyllum scalare Cichlidae food deprivation hepatocytes phenotypic plasticity aquaculture Motta,Jonas Henrique Glória,Leonardo Souza,André Batista de Fosse Filho,joão Carlos Polese,Marcelo Vidal Jr.,Manuel Effect of fasting on freshwater angelfish Pterophyllum scalare (Lichtenstein; Pisces: Cichlidae) development
description	ABSTRACT We tested the effect of fasting on the development of juvenile freshwater angelfish (Pterophyllum scalare). The juveniles were subjected to different fasting periods (0, 3, 6, 9, 12, and 15 days of fasting). Fish from all treatments were fed for 30 days after the fasting period. No difference (P > 0.05) was observed between treatments for final weight and length. There was a significant difference (P < 0.05) in treatments 12 and 15 days fasting for liver and intestine weight. These results may prove that 12 and 15 days of fasting force juveniles to use energy reserves, and these adaptations may also represent a saving energy strategy. The fish subjected to treatments 6, 9, 12, and 15 days of fasting showed different vacuolization in hepatocytes from the ones subjected to 0 and 3 days of fasting (P < 0.05). These results show that during the lack of feeding, juveniles (P. scalare) mobilizes energy stored in the liver. No difference (P > 0.05) was observed between treatments for survival rate. However, the increase in the number of deaths from the eighth day of fasting may indicate that periods with more than 15 days of fasting could be fatal to this species during this life stage. According to our findings, it can be assumed that juvenile freshwater angelfishes have strategies (e.g. a decrease in liver and intestine weight) to resist 15 days of fasting.
author	Motta,Jonas Henrique Glória,Leonardo Souza,André Batista de Fosse Filho,joão Carlos Polese,Marcelo Vidal Jr.,Manuel
author_facet	Motta,Jonas Henrique Glória,Leonardo Souza,André Batista de Fosse Filho,joão Carlos Polese,Marcelo Vidal Jr.,Manuel
author_sort	Motta,Jonas Henrique
title	Effect of fasting on freshwater angelfish Pterophyllum scalare (Lichtenstein; Pisces: Cichlidae) development
title_short	Effect of fasting on freshwater angelfish Pterophyllum scalare (Lichtenstein; Pisces: Cichlidae) development
title_full	Effect of fasting on freshwater angelfish Pterophyllum scalare (Lichtenstein; Pisces: Cichlidae) development
title_fullStr	Effect of fasting on freshwater angelfish Pterophyllum scalare (Lichtenstein; Pisces: Cichlidae) development
title_full_unstemmed	Effect of fasting on freshwater angelfish Pterophyllum scalare (Lichtenstein; Pisces: Cichlidae) development
title_sort	effect of fasting on freshwater angelfish pterophyllum scalare (lichtenstein; pisces: cichlidae) development
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2021
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2021000100125
work_keys_str_mv	AT mottajonashenrique effectoffastingonfreshwaterangelfishpterophyllumscalarelichtensteinpiscescichlidaedevelopment AT glorialeonardo effectoffastingonfreshwaterangelfishpterophyllumscalarelichtensteinpiscescichlidaedevelopment AT souzaandrebatistade effectoffastingonfreshwaterangelfishpterophyllumscalarelichtensteinpiscescichlidaedevelopment AT fossefilhojoaocarlos effectoffastingonfreshwaterangelfishpterophyllumscalarelichtensteinpiscescichlidaedevelopment AT polesemarcelo effectoffastingonfreshwaterangelfishpterophyllumscalarelichtensteinpiscescichlidaedevelopment AT vidaljrmanuel effectoffastingonfreshwaterangelfishpterophyllumscalarelichtensteinpiscescichlidaedevelopment
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Effect of fasting on freshwater angelfish Pterophyllum scalare (Lichtenstein; Pisces: Cichlidae) development

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