Consistent changes in the intestinal microbiota of Atlantic salmon fed insect meal diets
Abstract Background Being part of fish's natural diets, insects have become a practical alternative feed ingredient for aquaculture. While nutritional values of insects have been extensively studied in various fish species, their impact on the fish microbiota remains to be fully explored. In an...
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ftdoajarticles:oai:doaj.org/article:ef503b5c37d54adab41a699b903e5400 2023-05-15T15:31:05+02:00 Consistent changes in the intestinal microbiota of Atlantic salmon fed insect meal diets Yanxian Li Karina Gajardo Alexander Jaramillo-Torres Trond M. Kortner Åshild Krogdahl 2022-01-01T00:00:00Z https://doi.org/10.1186/s42523-021-00159-4 https://doaj.org/article/ef503b5c37d54adab41a699b903e5400 EN eng BMC https://doi.org/10.1186/s42523-021-00159-4 https://doaj.org/toc/2524-4671 doi:10.1186/s42523-021-00159-4 2524-4671 https://doaj.org/article/ef503b5c37d54adab41a699b903e5400 Animal Microbiome, Vol 4, Iss 1, Pp 1-15 (2022) Atlantic salmon Insect meal Black soldier fly Intestinal microbiota Feed microbiota Water microbiota Veterinary medicine SF600-1100 Microbiology QR1-502 article 2022 ftdoajarticles https://doi.org/10.1186/s42523-021-00159-4 2022-12-31T16:35:14Z Abstract Background Being part of fish's natural diets, insects have become a practical alternative feed ingredient for aquaculture. While nutritional values of insects have been extensively studied in various fish species, their impact on the fish microbiota remains to be fully explored. In an 8-week freshwater feeding trial, Atlantic salmon (Salmo salar) were fed either a commercially relevant reference diet or an insect meal diet wherein black soldier fly (Hermetia illucens) larvae meal comprised 60% of total ingredients. Microbiota of digesta and mucosa origin from the proximal and distal intestine were collected and profiled along with feed and water samples. Results The insect meal diet markedly modulated the salmon intestinal microbiota. Salmon fed the insect meal diet showed similar or lower alpha-diversity indices in the digesta but higher alpha-diversity indices in the mucosa. A group of bacterial genera, dominated by members of the Bacillaceae family, was enriched in salmon fed the insect meal diet, which confirms our previous findings in a seawater feeding trial. We also found that microbiota in the intestine closely resembled that of the feeds but was distinct from the water microbiota. Notably, bacterial genera associated with the diet effects were also present in the feeds. Conclusions We conclude that salmon fed the insect meal diets show consistent changes in the intestinal microbiota. The next challenge is to evaluate the extent to which these alterations are attributable to feed microbiota and dietary nutrients, and what these changes mean for fish physiology and health. Article in Journal/Newspaper Atlantic salmon Salmo salar Directory of Open Access Journals: DOAJ Articles Animal Microbiome 4 1 |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Atlantic salmon Insect meal Black soldier fly Intestinal microbiota Feed microbiota Water microbiota Veterinary medicine SF600-1100 Microbiology QR1-502 |
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Atlantic salmon Insect meal Black soldier fly Intestinal microbiota Feed microbiota Water microbiota Veterinary medicine SF600-1100 Microbiology QR1-502 Yanxian Li Karina Gajardo Alexander Jaramillo-Torres Trond M. Kortner Åshild Krogdahl Consistent changes in the intestinal microbiota of Atlantic salmon fed insect meal diets |
topic_facet |
Atlantic salmon Insect meal Black soldier fly Intestinal microbiota Feed microbiota Water microbiota Veterinary medicine SF600-1100 Microbiology QR1-502 |
description |
Abstract Background Being part of fish's natural diets, insects have become a practical alternative feed ingredient for aquaculture. While nutritional values of insects have been extensively studied in various fish species, their impact on the fish microbiota remains to be fully explored. In an 8-week freshwater feeding trial, Atlantic salmon (Salmo salar) were fed either a commercially relevant reference diet or an insect meal diet wherein black soldier fly (Hermetia illucens) larvae meal comprised 60% of total ingredients. Microbiota of digesta and mucosa origin from the proximal and distal intestine were collected and profiled along with feed and water samples. Results The insect meal diet markedly modulated the salmon intestinal microbiota. Salmon fed the insect meal diet showed similar or lower alpha-diversity indices in the digesta but higher alpha-diversity indices in the mucosa. A group of bacterial genera, dominated by members of the Bacillaceae family, was enriched in salmon fed the insect meal diet, which confirms our previous findings in a seawater feeding trial. We also found that microbiota in the intestine closely resembled that of the feeds but was distinct from the water microbiota. Notably, bacterial genera associated with the diet effects were also present in the feeds. Conclusions We conclude that salmon fed the insect meal diets show consistent changes in the intestinal microbiota. The next challenge is to evaluate the extent to which these alterations are attributable to feed microbiota and dietary nutrients, and what these changes mean for fish physiology and health. |
format |
Article in Journal/Newspaper |
author |
Yanxian Li Karina Gajardo Alexander Jaramillo-Torres Trond M. Kortner Åshild Krogdahl |
author_facet |
Yanxian Li Karina Gajardo Alexander Jaramillo-Torres Trond M. Kortner Åshild Krogdahl |
author_sort |
Yanxian Li |
title |
Consistent changes in the intestinal microbiota of Atlantic salmon fed insect meal diets |
title_short |
Consistent changes in the intestinal microbiota of Atlantic salmon fed insect meal diets |
title_full |
Consistent changes in the intestinal microbiota of Atlantic salmon fed insect meal diets |
title_fullStr |
Consistent changes in the intestinal microbiota of Atlantic salmon fed insect meal diets |
title_full_unstemmed |
Consistent changes in the intestinal microbiota of Atlantic salmon fed insect meal diets |
title_sort |
consistent changes in the intestinal microbiota of atlantic salmon fed insect meal diets |
publisher |
BMC |
publishDate |
2022 |
url |
https://doi.org/10.1186/s42523-021-00159-4 https://doaj.org/article/ef503b5c37d54adab41a699b903e5400 |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Animal Microbiome, Vol 4, Iss 1, Pp 1-15 (2022) |
op_relation |
https://doi.org/10.1186/s42523-021-00159-4 https://doaj.org/toc/2524-4671 doi:10.1186/s42523-021-00159-4 2524-4671 https://doaj.org/article/ef503b5c37d54adab41a699b903e5400 |
op_doi |
https://doi.org/10.1186/s42523-021-00159-4 |
container_title |
Animal Microbiome |
container_volume |
4 |
container_issue |
1 |
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1766361574697598976 |