First Assessment of Prebiotics, Probiotics, and Synbiotics Affecting Survival, Growth, and Gene Expression of European Eel (Anguilla anguilla) Larvae
European eel, Anguilla anguilla, larval culture faces a bottleneck during the transition to exogenous feeding. To stimulate gutpriming, in the present study, prebiotics (AgriMOS, mannan-oligosaccharides, and β-(1,3 and 1,6)-poly-D-glucose), probiotics (Bactocell, Pediococcus acidilactici), and synbi...
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Online Access: | https://hdl.handle.net/11585/942955 https://doi.org/10.1155/2023/1260967 |
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ftunibolognairis:oai:cris.unibo.it:11585/942955 2024-04-14T08:01:00+00:00 First Assessment of Prebiotics, Probiotics, and Synbiotics Affecting Survival, Growth, and Gene Expression of European Eel (Anguilla anguilla) Larvae Politis S. N. Benini E. Miest J. J. Engrola S. Sorensen S. R. Syropoulou E. Butts I. A. E. Tomkiewicz J. Politis S.N. Benini E. Miest J.J. Engrola S. Sorensen S.R. Syropoulou E. Butts I.A.E. Tomkiewicz J. 2023 STAMPA https://hdl.handle.net/11585/942955 https://doi.org/10.1155/2023/1260967 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000943732500001 volume:2023 firstpage:1 lastpage:13 numberofpages:13 journal:AQUACULTURE RESEARCH https://hdl.handle.net/11585/942955 doi:10.1155/2023/1260967 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85164443133 info:eu-repo/semantics/openAccess assessment method eel food intake gene expression growth rate immune system larva maturation mortality phenotypic plasticity probiotic stocking density survival water management info:eu-repo/semantics/article 2023 ftunibolognairis https://doi.org/10.1155/2023/1260967 2024-03-21T17:08:10Z European eel, Anguilla anguilla, larval culture faces a bottleneck during the transition to exogenous feeding. To stimulate gutpriming, in the present study, prebiotics (AgriMOS, mannan-oligosaccharides, and β-(1,3 and 1,6)-poly-D-glucose), probiotics (Bactocell, Pediococcus acidilactici), and synbiotics (AgriMOS + Bactocell) were administered to European eel larvae during the endogenous prefeeding stage. Eel larvae were reared in 2 L incubators with an initial stocking density of ∼200 larvae/L. Each treatment (pre-, pro-, synbiotics, and control), represented by 3 replicated incubators, was connected to a separate recirculating aquaculture system. The gut-priming agents were introduced directly into the rearing water. Results revealed increased mortality when larvae were introduced to synbiotics and impaired growth in connection to probiotics and synbiotics. Larvae receiving prebiotics showed similar survival and growth to larvae reared without gut-priming agents. The immune gene expression revealed a lag phase between maternally inherited protection (c3, igm, and il10) and the gradual buildup of the larvae's own immune system (il1β, irf7). The lack of treatment-related immune (c3, igm, il10, il1β, and irf7) and stress/repair (hsp70, hsp90) responses revealed an immature immuno-readiness. Digestion (try, ctra, ctrb, tgl, and amyl), food intake (cck), and appetite (ghrl)-related genes were expressed at basal levels already on 4 days post-hatch, which combined with phenotypic plasticity of the appetite-regulating ghrelin (ghrl), indicated a prospective adaptive capability towards earlier maturation of the larval digestive capacity. Overall, we contemplate that the application of gut-priming agents in water has merit; however, as no beneficial effect was observed, we conclude that the regimen applied is not recommendable in the present form and needs to be customized for future eel larval culture. As such, water management strategies and rearing options need to be further explored to establish prefeeding and ... Article in Journal/Newspaper Anguilla anguilla IRIS Università degli Studi di Bologna (CRIS - Current Research Information System) Aquaculture Research 2023 1 13 |
institution |
Open Polar |
collection |
IRIS Università degli Studi di Bologna (CRIS - Current Research Information System) |
op_collection_id |
ftunibolognairis |
language |
English |
topic |
assessment method eel food intake gene expression growth rate immune system larva maturation mortality phenotypic plasticity probiotic stocking density survival water management |
spellingShingle |
assessment method eel food intake gene expression growth rate immune system larva maturation mortality phenotypic plasticity probiotic stocking density survival water management Politis S. N. Benini E. Miest J. J. Engrola S. Sorensen S. R. Syropoulou E. Butts I. A. E. Tomkiewicz J. First Assessment of Prebiotics, Probiotics, and Synbiotics Affecting Survival, Growth, and Gene Expression of European Eel (Anguilla anguilla) Larvae |
topic_facet |
assessment method eel food intake gene expression growth rate immune system larva maturation mortality phenotypic plasticity probiotic stocking density survival water management |
description |
European eel, Anguilla anguilla, larval culture faces a bottleneck during the transition to exogenous feeding. To stimulate gutpriming, in the present study, prebiotics (AgriMOS, mannan-oligosaccharides, and β-(1,3 and 1,6)-poly-D-glucose), probiotics (Bactocell, Pediococcus acidilactici), and synbiotics (AgriMOS + Bactocell) were administered to European eel larvae during the endogenous prefeeding stage. Eel larvae were reared in 2 L incubators with an initial stocking density of ∼200 larvae/L. Each treatment (pre-, pro-, synbiotics, and control), represented by 3 replicated incubators, was connected to a separate recirculating aquaculture system. The gut-priming agents were introduced directly into the rearing water. Results revealed increased mortality when larvae were introduced to synbiotics and impaired growth in connection to probiotics and synbiotics. Larvae receiving prebiotics showed similar survival and growth to larvae reared without gut-priming agents. The immune gene expression revealed a lag phase between maternally inherited protection (c3, igm, and il10) and the gradual buildup of the larvae's own immune system (il1β, irf7). The lack of treatment-related immune (c3, igm, il10, il1β, and irf7) and stress/repair (hsp70, hsp90) responses revealed an immature immuno-readiness. Digestion (try, ctra, ctrb, tgl, and amyl), food intake (cck), and appetite (ghrl)-related genes were expressed at basal levels already on 4 days post-hatch, which combined with phenotypic plasticity of the appetite-regulating ghrelin (ghrl), indicated a prospective adaptive capability towards earlier maturation of the larval digestive capacity. Overall, we contemplate that the application of gut-priming agents in water has merit; however, as no beneficial effect was observed, we conclude that the regimen applied is not recommendable in the present form and needs to be customized for future eel larval culture. As such, water management strategies and rearing options need to be further explored to establish prefeeding and ... |
author2 |
Politis S.N. Benini E. Miest J.J. Engrola S. Sorensen S.R. Syropoulou E. Butts I.A.E. Tomkiewicz J. |
format |
Article in Journal/Newspaper |
author |
Politis S. N. Benini E. Miest J. J. Engrola S. Sorensen S. R. Syropoulou E. Butts I. A. E. Tomkiewicz J. |
author_facet |
Politis S. N. Benini E. Miest J. J. Engrola S. Sorensen S. R. Syropoulou E. Butts I. A. E. Tomkiewicz J. |
author_sort |
Politis S. N. |
title |
First Assessment of Prebiotics, Probiotics, and Synbiotics Affecting Survival, Growth, and Gene Expression of European Eel (Anguilla anguilla) Larvae |
title_short |
First Assessment of Prebiotics, Probiotics, and Synbiotics Affecting Survival, Growth, and Gene Expression of European Eel (Anguilla anguilla) Larvae |
title_full |
First Assessment of Prebiotics, Probiotics, and Synbiotics Affecting Survival, Growth, and Gene Expression of European Eel (Anguilla anguilla) Larvae |
title_fullStr |
First Assessment of Prebiotics, Probiotics, and Synbiotics Affecting Survival, Growth, and Gene Expression of European Eel (Anguilla anguilla) Larvae |
title_full_unstemmed |
First Assessment of Prebiotics, Probiotics, and Synbiotics Affecting Survival, Growth, and Gene Expression of European Eel (Anguilla anguilla) Larvae |
title_sort |
first assessment of prebiotics, probiotics, and synbiotics affecting survival, growth, and gene expression of european eel (anguilla anguilla) larvae |
publishDate |
2023 |
url |
https://hdl.handle.net/11585/942955 https://doi.org/10.1155/2023/1260967 |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000943732500001 volume:2023 firstpage:1 lastpage:13 numberofpages:13 journal:AQUACULTURE RESEARCH https://hdl.handle.net/11585/942955 doi:10.1155/2023/1260967 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85164443133 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1155/2023/1260967 |
container_title |
Aquaculture Research |
container_volume |
2023 |
container_start_page |
1 |
op_container_end_page |
13 |
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1796306254624194560 |