A workflow management system for early feeding of the European hake

Diversification of marine species has emerged as a priority in the aquaculture agenda of many countries due to its large industrial potential and as an alternative to overharvested fisheries. Aquaculture diversification entails new challenges during early life stages of candidate species such as sur...

Full description

Bibliographic Details
Authors: Nande, Manuel, Pérez Rodríguez, Montse, Costas, Damián, Presa, Pablo
Format: article
Status:Published version
Publication Date:2017
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/315201
Online Access:http://hdl.handle.net/10261/315201
Access Level:Open access
Keyword:Early feeding
Centro Oceanográfico de Vigo
Acuicultura
European hake
Larval growth
merluccius merluccius
Live prey
Adaptive diets
fish
diets
predation
id ES_e0d8a693fd0bb2b85485001925d2f243
oai_identifier_str oai:digital.csic.es:10261/315201
network_acronym_str ES
network_name_str España
repository_id_str
spelling A workflow management system for early feeding of the European hakeNande, ManuelPérez Rodríguez, MontseCostas, DamiánPresa, PabloEarly feedingCentro Oceanográfico de VigoAcuiculturaEuropean hakeLarval growthmerluccius merlucciusLive preyAdaptive dietsfishdietspredationDiversification of marine species has emerged as a priority in the aquaculture agenda of many countries due to its large industrial potential and as an alternative to overharvested fisheries. Aquaculture diversification entails new challenges during early life stages of candidate species such as survival bottlenecks or body malformations, many of them due to uncoupling between classic diets and early nutritional requirements. Monospecific diets are common in fish aquaculture, e.g. beginning with a rotifer-based diet, followed by a mixed diet of rotifer and artemia nauplii and ending with artemia nauplii and metanauplii until weaning. Despite some success was reported using such protocol in early hake feeding the massive mortality observed as approaching 25 dph makes optimization of early feeding and larval management a current challenge for the domestication of this species. The main goal of this study was to design and test a workflow management system for early feeding of the European hake as a candidate species. The null hypothesis tested was that optimization of rearing settings had no effect on early growth and survival up to 30 dph as compared to classic culture protocols using commercial prey. Absence of prey in 6 dph hake larvae stomachs indicates that their external feeding at 14 °C begins just after that age. Early feeding preference depends on prey size (< 500 μm before 9 dph) as well as on pigmentation and behavior e.g. those with poor escape reactivity such as A. franciscana Nauplii. Significant feeding specialization on wild zooplankton such as P. intermedius and T. longicornis occurred after 9 dph (Chesson selectivity index = 0.11). Feeding activity was maximal in darkness (D) and medium light intensity (600 lx, MLI) as compared to the lethal light intensity of 1700 lx (HLI). Rotifer-based diets entailed low larvae growth and hake culture unviability after 15 dph but inclusion of wild zooplankton in early diets doubled growth of 30 dph larvae regarding artemia-based diets. The adaptive prey-size diet designed (MiACop) by combining stages of copepods (nauplii, copepodite and adult), rotifer and commercial nauplii of artemia was five-fold superior to the artemia/zooplankton diet all along the first 30 dph larvae culture. The massive cannibalism observed from 25 dph on was related to the absence of an adequate prey size such as that of mysids and euphausiids in combination with semi-dry feed to trigger weaning. Current workflow design for early feeding of the European hake can be helpful to assuring a larger proportion of juveniles entering the weaning phase.Análisis de la dinámica reproductiva de la merluza europea en cultivo. Más allá de la acuicultura.LETSHAKESI202320232017info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/315201reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#AGL2013-48468RCentro Oceanográfico de Vigoinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3152012026-05-22T06:33:51Z
dc.title.none.fl_str_mv A workflow management system for early feeding of the European hake
title A workflow management system for early feeding of the European hake
spellingShingle A workflow management system for early feeding of the European hake
Nande, Manuel
Early feeding
Centro Oceanográfico de Vigo
Acuicultura
European hake
Larval growth
merluccius merluccius
Live prey
Adaptive diets
fish
diets
predation
title_short A workflow management system for early feeding of the European hake
title_full A workflow management system for early feeding of the European hake
title_fullStr A workflow management system for early feeding of the European hake
title_full_unstemmed A workflow management system for early feeding of the European hake
title_sort A workflow management system for early feeding of the European hake
dc.creator.none.fl_str_mv Nande, Manuel
Pérez Rodríguez, Montse
Costas, Damián
Presa, Pablo
author Nande, Manuel
author_facet Nande, Manuel
Pérez Rodríguez, Montse
Costas, Damián
Presa, Pablo
author_role author
author2 Pérez Rodríguez, Montse
Costas, Damián
Presa, Pablo
author2_role author
author
author
dc.subject.none.fl_str_mv Early feeding
Centro Oceanográfico de Vigo
Acuicultura
European hake
Larval growth
merluccius merluccius
Live prey
Adaptive diets
fish
diets
predation
topic Early feeding
Centro Oceanográfico de Vigo
Acuicultura
European hake
Larval growth
merluccius merluccius
Live prey
Adaptive diets
fish
diets
predation
description Diversification of marine species has emerged as a priority in the aquaculture agenda of many countries due to its large industrial potential and as an alternative to overharvested fisheries. Aquaculture diversification entails new challenges during early life stages of candidate species such as survival bottlenecks or body malformations, many of them due to uncoupling between classic diets and early nutritional requirements. Monospecific diets are common in fish aquaculture, e.g. beginning with a rotifer-based diet, followed by a mixed diet of rotifer and artemia nauplii and ending with artemia nauplii and metanauplii until weaning. Despite some success was reported using such protocol in early hake feeding the massive mortality observed as approaching 25 dph makes optimization of early feeding and larval management a current challenge for the domestication of this species. The main goal of this study was to design and test a workflow management system for early feeding of the European hake as a candidate species. The null hypothesis tested was that optimization of rearing settings had no effect on early growth and survival up to 30 dph as compared to classic culture protocols using commercial prey. Absence of prey in 6 dph hake larvae stomachs indicates that their external feeding at 14 °C begins just after that age. Early feeding preference depends on prey size (< 500 μm before 9 dph) as well as on pigmentation and behavior e.g. those with poor escape reactivity such as A. franciscana Nauplii. Significant feeding specialization on wild zooplankton such as P. intermedius and T. longicornis occurred after 9 dph (Chesson selectivity index = 0.11). Feeding activity was maximal in darkness (D) and medium light intensity (600 lx, MLI) as compared to the lethal light intensity of 1700 lx (HLI). Rotifer-based diets entailed low larvae growth and hake culture unviability after 15 dph but inclusion of wild zooplankton in early diets doubled growth of 30 dph larvae regarding artemia-based diets. The adaptive prey-size diet designed (MiACop) by combining stages of copepods (nauplii, copepodite and adult), rotifer and commercial nauplii of artemia was five-fold superior to the artemia/zooplankton diet all along the first 30 dph larvae culture. The massive cannibalism observed from 25 dph on was related to the absence of an adequate prey size such as that of mysids and euphausiids in combination with semi-dry feed to trigger weaning. Current workflow design for early feeding of the European hake can be helpful to assuring a larger proportion of juveniles entering the weaning phase.
publishDate 2017
dc.date.none.fl_str_mv 2017
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/315201
url http://hdl.handle.net/10261/315201
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
AGL2013-48468R
Centro Oceanográfico de Vigo
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869422239318802432
score 15,811543

Similar Items