The effect of starvation on refeeding, digestive enzyme activity, oxygen consumption, and ammonia excretion in juvenile white shrimp Litopenaeus vannamei

Juveniles of the white shrimp Litopenaeus vannamei were kept Without food for between 0 to 15 clays to evaluate the impact of starvation oil physiologic state (oxygen consumption, poststarvation refeeding, index, nitrogen excretion, and O:N ratio) and digestive enzymes activity. Physiologic changes...

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Detalhes bibliográficos
Autores: Comoglio, LI, Gaxiola, G, Roque, A, Cuzon, G, Amin, O
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2004
País:México
Recursos:Universidad Nacional Autónoma de México
Repositorio:Sistema de Información de la Facultad de Ciencias, UNAM
OAI Identifier:oai:repositorio.fciencias.unam.mx:11154/1587
Acesso em linha:http://hdl.handle.net/11154/1587
Access Level:acceso abierto
Palavra-chave:Fisheries
Marine & Freshwater Biology
digestive enzymes
Litopenaeus vannamei
metabolic rate
shrimp
starvation
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spelling The effect of starvation on refeeding, digestive enzyme activity, oxygen consumption, and ammonia excretion in juvenile white shrimp Litopenaeus vannameiComoglio, LIGaxiola, GRoque, ACuzon, GAmin, OFisheriesMarine & Freshwater Biologydigestive enzymesLitopenaeus vannameimetabolic rateshrimpstarvationJuveniles of the white shrimp Litopenaeus vannamei were kept Without food for between 0 to 15 clays to evaluate the impact of starvation oil physiologic state (oxygen consumption, poststarvation refeeding, index, nitrogen excretion, and O:N ratio) and digestive enzymes activity. Physiologic changes were found after 6 days of fasting, and refeeding ability declined as a result. Nevertheless. the shrimp were able to Survive 16 days Without food. Starvation Caused metabolism to drop progressively toward a basal level (21 J (.) h(-1 .) g(-1)) and a decrease in the rate of ammonia excretion, because of the catabolism of amino acids front soluble protein in the hepatopancreas. This decrease led to an increase in digestive enzymes specific activity (U/mg protein). But, expressed as total U. all digestive enzyme activities decreased in the absence of substrate from 0.016 to 0.007 U/hepatopancreas (HP) for alpha-amylase and 2.58 to 0.63 U/HP for total trypsin. L. vannamei juveniles showed a true physiologic adaptation mechanism to food depiivation: no changes in body weight but loss in hepatosomatic index, no exuviations, including the utilization of HP soluble proteins (a drop from 269 to 53 mg/mL). After 10 days. a neoglycogenic pathway and the corresponding tissue enzymes activities seemed enhanced, and the animals derived all energetic Substrates mainly from protein (O:N ratio of 17) to cover their metabolic costs. Estimates of basal metabolism (Hem) from the routine respiration rate per clay (from 361 to 725 J (.) g ww(-1) (.) day(-1) through the 15-day starvation period). and loss of nonfecal energy (HxE) from the nitrogen excretion rate (varying from 39 to 57 J (.) g ww(-1) (.) day(-1) during the same period) were used in a bioenergetic partition model of a fasting juvenile. Which indicated that the energetic requirement to Survive Without feeding was in the range of 418 and 771 J (.) g ww(-1) (.) day(-1) during the 15-day period of starvation.2011-01-22T10:27:18Z2011-01-22T10:27:18Z2004info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article0730-8000http://hdl.handle.net/11154/1587180323(1):243-249reponame:Sistema de Información de la Facultad de Ciencias, UNAMinstname:Universidad Nacional Autónoma de Méxicoinstacron:UNAMenJournal of Shellfish Researchinfo:eu-repo/semantics/openAccessoai:repositorio.fciencias.unam.mx:11154/15872025-09-17T19:20:22Z
dc.title.none.fl_str_mv The effect of starvation on refeeding, digestive enzyme activity, oxygen consumption, and ammonia excretion in juvenile white shrimp Litopenaeus vannamei
title The effect of starvation on refeeding, digestive enzyme activity, oxygen consumption, and ammonia excretion in juvenile white shrimp Litopenaeus vannamei
spellingShingle The effect of starvation on refeeding, digestive enzyme activity, oxygen consumption, and ammonia excretion in juvenile white shrimp Litopenaeus vannamei
Comoglio, LI
Fisheries
Marine & Freshwater Biology
digestive enzymes
Litopenaeus vannamei
metabolic rate
shrimp
starvation
title_short The effect of starvation on refeeding, digestive enzyme activity, oxygen consumption, and ammonia excretion in juvenile white shrimp Litopenaeus vannamei
title_full The effect of starvation on refeeding, digestive enzyme activity, oxygen consumption, and ammonia excretion in juvenile white shrimp Litopenaeus vannamei
title_fullStr The effect of starvation on refeeding, digestive enzyme activity, oxygen consumption, and ammonia excretion in juvenile white shrimp Litopenaeus vannamei
title_full_unstemmed The effect of starvation on refeeding, digestive enzyme activity, oxygen consumption, and ammonia excretion in juvenile white shrimp Litopenaeus vannamei
title_sort The effect of starvation on refeeding, digestive enzyme activity, oxygen consumption, and ammonia excretion in juvenile white shrimp Litopenaeus vannamei
dc.creator.none.fl_str_mv Comoglio, LI
Gaxiola, G
Roque, A
Cuzon, G
Amin, O
author Comoglio, LI
author_facet Comoglio, LI
Gaxiola, G
Roque, A
Cuzon, G
Amin, O
author_role author
author2 Gaxiola, G
Roque, A
Cuzon, G
Amin, O
author2_role author
author
author
author
dc.subject.none.fl_str_mv Fisheries
Marine & Freshwater Biology
digestive enzymes
Litopenaeus vannamei
metabolic rate
shrimp
starvation
topic Fisheries
Marine & Freshwater Biology
digestive enzymes
Litopenaeus vannamei
metabolic rate
shrimp
starvation
description Juveniles of the white shrimp Litopenaeus vannamei were kept Without food for between 0 to 15 clays to evaluate the impact of starvation oil physiologic state (oxygen consumption, poststarvation refeeding, index, nitrogen excretion, and O:N ratio) and digestive enzymes activity. Physiologic changes were found after 6 days of fasting, and refeeding ability declined as a result. Nevertheless. the shrimp were able to Survive 16 days Without food. Starvation Caused metabolism to drop progressively toward a basal level (21 J (.) h(-1 .) g(-1)) and a decrease in the rate of ammonia excretion, because of the catabolism of amino acids front soluble protein in the hepatopancreas. This decrease led to an increase in digestive enzymes specific activity (U/mg protein). But, expressed as total U. all digestive enzyme activities decreased in the absence of substrate from 0.016 to 0.007 U/hepatopancreas (HP) for alpha-amylase and 2.58 to 0.63 U/HP for total trypsin. L. vannamei juveniles showed a true physiologic adaptation mechanism to food depiivation: no changes in body weight but loss in hepatosomatic index, no exuviations, including the utilization of HP soluble proteins (a drop from 269 to 53 mg/mL). After 10 days. a neoglycogenic pathway and the corresponding tissue enzymes activities seemed enhanced, and the animals derived all energetic Substrates mainly from protein (O:N ratio of 17) to cover their metabolic costs. Estimates of basal metabolism (Hem) from the routine respiration rate per clay (from 361 to 725 J (.) g ww(-1) (.) day(-1) through the 15-day starvation period). and loss of nonfecal energy (HxE) from the nitrogen excretion rate (varying from 39 to 57 J (.) g ww(-1) (.) day(-1) during the same period) were used in a bioenergetic partition model of a fasting juvenile. Which indicated that the energetic requirement to Survive Without feeding was in the range of 418 and 771 J (.) g ww(-1) (.) day(-1) during the 15-day period of starvation.
publishDate 2004
dc.date.none.fl_str_mv 2004
2011-01-22T10:27:18Z
2011-01-22T10:27:18Z
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv 0730-8000
http://hdl.handle.net/11154/1587
1803
identifier_str_mv 0730-8000
1803
url http://hdl.handle.net/11154/1587
dc.language.none.fl_str_mv en
language_invalid_str_mv en
dc.relation.none.fl_str_mv Journal of Shellfish Research
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv 23(1):243-249
reponame:Sistema de Información de la Facultad de Ciencias, UNAM
instname:Universidad Nacional Autónoma de México
instacron:UNAM
instname_str Universidad Nacional Autónoma de México
instacron_str UNAM
institution UNAM
reponame_str Sistema de Información de la Facultad de Ciencias, UNAM
collection Sistema de Información de la Facultad de Ciencias, UNAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,198674

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