Effect of intermittent feeding on growth in early juveniles of the crayfish Cherax quadricarinatus

Three experiments were conducted with juveniles of the crayfish Cherax quadricarinatus to investigate the effect of intermittent feeding regimes on growth and the ability to tolerate the shortage of food. In experiment 1, stage III juveniles were assigned to one of seven intermittent feeding groups...

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Autores principales: Stumpf, L., Calvo, N.S., Díaz, F.C., Valenti, W.C., Greco, L.S.L.
Formato: JOUR
Materias:
Cherax quadricarinatus
Compensatory growth
Hepatosomatic index
Intermittent feeding
Juveniles
Relative pleon weight
adaptation
aquaculture production
compensation
crayfish
crustacean culture
experimental study
food limitation
growth response
juvenile
molt
nutrient limitation
survival
tolerance
Animalia
Astacoidea
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00448486_v319_n1-2_p98_Stumpf
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_00448486_v319_n1-2_p98_Stumpf2023-10-03T14:51:51Z Effect of intermittent feeding on growth in early juveniles of the crayfish Cherax quadricarinatus Stumpf, L. Calvo, N.S. Díaz, F.C. Valenti, W.C. Greco, L.S.L. Cherax quadricarinatus Compensatory growth Hepatosomatic index Intermittent feeding Juveniles Relative pleon weight adaptation aquaculture production compensation crayfish crustacean culture experimental study food limitation growth response juvenile molt nutrient limitation survival tolerance Animalia Astacoidea Cherax quadricarinatus Three experiments were conducted with juveniles of the crayfish Cherax quadricarinatus to investigate the effect of intermittent feeding regimes on growth and the ability to tolerate the shortage of food. In experiment 1, stage III juveniles were assigned to one of seven intermittent feeding groups (from FS1: 1. day fed/1. day non-fed to FS7: 7. days fed/7. days non-fed) and two control groups, continuously fed (CF) and continuously starved (CS) animals; this experiment comprised a short-term intermittent feeding period until the first molt, followed by a continuous feeding period. In the experiment 2, stage III juveniles were assigned to one of three intermittent feeding groups (FS2 to FS4) and one control group (CF); it consisted of a prolonged intermittent feeding period, until the end of the experiment. In the experiment 3, stage VI and VII juveniles were assigned to one of three intermittent feeding groups (FS2 to FS4) and one control (CF); it also consisted of a prolonged intermittent feeding period. The red claw crayfish juveniles were able to tolerate periods of intermittent feeding and underwent compensatory growth after continuous feed was re-established. The ability of crayfish to tolerate intermittent feeding was influenced by developmental stage and duration of the intermittent feeding period. Stage III juveniles survived, but decreased growth, when subjected to prolonged intermittent feeding. However, they showed full compensatory growth when the intermittent feeding period was short and followed by continuous feeding. On the other hand, stage VI-VII tolerated 60. days of prolonged intermittent feeding without any change in growth and survival. The hepatosomatic index (based on wet weight) values of the treatments and the control were similar, suggesting that intermittent feeding may not be considered a nutritional stress condition. The relative pleon weight (based on wet weight) values of the treatments and control were similar suggesting low use of nutrients from the muscle to increase the chance for survival. The juveniles of C. quadricarinatus can tolerate relatively long periods of low food availability and this is an important adaptation for their survival in changing/unpredictable environments and an attribute favorable for the production of the species. © 2011 Elsevier B.V. Fil:Calvo, N.S. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00448486_v319_n1-2_p98_Stumpf
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Cherax quadricarinatus
Compensatory growth
Hepatosomatic index
Intermittent feeding
Juveniles
Relative pleon weight
adaptation
aquaculture production
compensation
crayfish
crustacean culture
experimental study
food limitation
growth response
juvenile
molt
nutrient limitation
survival
tolerance
Animalia
Astacoidea
Cherax quadricarinatus
spellingShingle Cherax quadricarinatus
Compensatory growth
Hepatosomatic index
Intermittent feeding
Juveniles
Relative pleon weight
adaptation
aquaculture production
compensation
crayfish
crustacean culture
experimental study
food limitation
growth response
juvenile
molt
nutrient limitation
survival
tolerance
Animalia
Astacoidea
Cherax quadricarinatus
Stumpf, L.
Calvo, N.S.
Díaz, F.C.
Valenti, W.C.
Greco, L.S.L.
Effect of intermittent feeding on growth in early juveniles of the crayfish Cherax quadricarinatus
topic_facet Cherax quadricarinatus
Compensatory growth
Hepatosomatic index
Intermittent feeding
Juveniles
Relative pleon weight
adaptation
aquaculture production
compensation
crayfish
crustacean culture
experimental study
food limitation
growth response
juvenile
molt
nutrient limitation
survival
tolerance
Animalia
Astacoidea
Cherax quadricarinatus
description Three experiments were conducted with juveniles of the crayfish Cherax quadricarinatus to investigate the effect of intermittent feeding regimes on growth and the ability to tolerate the shortage of food. In experiment 1, stage III juveniles were assigned to one of seven intermittent feeding groups (from FS1: 1. day fed/1. day non-fed to FS7: 7. days fed/7. days non-fed) and two control groups, continuously fed (CF) and continuously starved (CS) animals; this experiment comprised a short-term intermittent feeding period until the first molt, followed by a continuous feeding period. In the experiment 2, stage III juveniles were assigned to one of three intermittent feeding groups (FS2 to FS4) and one control group (CF); it consisted of a prolonged intermittent feeding period, until the end of the experiment. In the experiment 3, stage VI and VII juveniles were assigned to one of three intermittent feeding groups (FS2 to FS4) and one control (CF); it also consisted of a prolonged intermittent feeding period. The red claw crayfish juveniles were able to tolerate periods of intermittent feeding and underwent compensatory growth after continuous feed was re-established. The ability of crayfish to tolerate intermittent feeding was influenced by developmental stage and duration of the intermittent feeding period. Stage III juveniles survived, but decreased growth, when subjected to prolonged intermittent feeding. However, they showed full compensatory growth when the intermittent feeding period was short and followed by continuous feeding. On the other hand, stage VI-VII tolerated 60. days of prolonged intermittent feeding without any change in growth and survival. The hepatosomatic index (based on wet weight) values of the treatments and the control were similar, suggesting that intermittent feeding may not be considered a nutritional stress condition. The relative pleon weight (based on wet weight) values of the treatments and control were similar suggesting low use of nutrients from the muscle to increase the chance for survival. The juveniles of C. quadricarinatus can tolerate relatively long periods of low food availability and this is an important adaptation for their survival in changing/unpredictable environments and an attribute favorable for the production of the species. © 2011 Elsevier B.V.
format JOUR
author Stumpf, L.
Calvo, N.S.
Díaz, F.C.
Valenti, W.C.
Greco, L.S.L.
author_facet Stumpf, L.
Calvo, N.S.
Díaz, F.C.
Valenti, W.C.
Greco, L.S.L.
author_sort Stumpf, L.
title Effect of intermittent feeding on growth in early juveniles of the crayfish Cherax quadricarinatus
title_short Effect of intermittent feeding on growth in early juveniles of the crayfish Cherax quadricarinatus
title_full Effect of intermittent feeding on growth in early juveniles of the crayfish Cherax quadricarinatus
title_fullStr Effect of intermittent feeding on growth in early juveniles of the crayfish Cherax quadricarinatus
title_full_unstemmed Effect of intermittent feeding on growth in early juveniles of the crayfish Cherax quadricarinatus
title_sort effect of intermittent feeding on growth in early juveniles of the crayfish cherax quadricarinatus
url http://hdl.handle.net/20.500.12110/paper_00448486_v319_n1-2_p98_Stumpf
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