Seaweed dietary supplements enhance the innate immune response of the mottled rabbitfish, Siganus fuscescens

Thépot, Valentin; Campbell, Alexandra H.; Paul, Nicholas A.; Rimmer, Michael A.

doi:10.1016/j.fsi.2021.03.018

Cited by 19 publications

(13 citation statements)

References 38 publications

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“…), which was a highly abundant taxon in the hindgut of the fish fed the control diet (which also had low ACH50; Figure 3 A and Supplementary Table S3 ). The relationship between ASV2081 and fish ACH50 is unclear as fish fed diets supplemented with Asparagopsis had significantly higher ACH50 than the other fish [ 16 ], although there were no differences in the relative abundance of this ASV between diet types. Rather, seven treatments had higher relative abundance while eight treatments had a lower relative abundance of ASV2081 compared to the fish fed Asparagopsis ( Supplementary Table S3 ).…”

Section: Resultsmentioning

confidence: 99%

“…The full methodological details of samples obtained for analysis of innate immune responses to the different seaweed diets are described in Thépot, et al [ 16 ]. Briefly, we obtained blood samples to assess cellular innate immune responses, which included the phagocytic activity/index and respiratory burst activity and we also obtained serum samples to assess humoral innate immune parameters including lysozyme activity and haemolytic activity.…”

Section: Methodsmentioning

confidence: 99%

“…The recently published paper [ 16 ] characterised the immune response of rabbitfish from a large experiment ( n = 9 fish, 3 fish per tank). Here a subset of these fish per tank ( n = 3) were randomly selected and are then related back to the immune data of those individual fish.…”

Section: Methodsmentioning

confidence: 99%

“…We recently demonstrated that dietary supplementation with several species of seaweed caused significant stimulation of parts of the innate immune response of the mottled rabbitfish Siganus fuscescens [ 16 ], however, the mode/s of action of this immunostimulatory effect remain unknown. Here, we explore whether observed changes in the innate immune responses of experimental S. fuscescens were correlated with shifts in the GI microbiomes of those fish and thus, whether a mode of action of dietary seaweed immunostimulation may have been microbially-mediated.…”

Section: Introductionmentioning

confidence: 99%

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Is the Intestinal Bacterial Community in the Australian Rabbitfish Siganus fuscescens Influenced by Seaweed Supplementation or Geography?

et al. 2022

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We recently demonstrated that dietary supplementation with seaweed leads to dramatic improvements in immune responses in S. fuscescens, a candidate species for aquaculture development in Asia. Here, to assess whether the immunostimulatory effect was facilitated by changes to the gut microbiome, we investigated the effects of those same seaweed species and four commercial feed supplements currently used in aquaculture on the bacterial communities in the hindgut of the fish. Since we found no correlations between the relative abundance of any particular taxa and the fish enhanced innate immune responses, we hypothesised that S. fuscescens might have a core microbiome that is robust to dietary manipulation. Two recently published studies describing the bacteria within the hindgut of S. fuscescens provided an opportunity to test this hypothesis and to compare our samples to those from geographically distinct populations. We found that, although hindgut bacterial communities were clearly and significantly distinguishable between studies and populations, a substantial proportion (55 of 174 taxa) were consistently detected across all populations. Our data suggest that the importance of gut microbiota to animal health and the extent to which they can be influenced by dietary manipulations might be species-specific or related to an animals’ trophic level.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Is the Intestinal Bacterial Community in the Australian Rabbitfish Siganus fuscescens Influenced by Seaweed Supplementation or Geography?

et al. 2022

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“…Further diversification of markets using species of seaweed that are not presently under cultivation may also be possible through integration with livestock in agriculture and aquaculture. Examples include the use of seaweed feed additives (at 3% or less inclusion) to boost the immune system of fish [107] and to enhance growth and other productivity traits, including reproductive output and stress tolerance [108]. These applications in agriculture and aquaculture would generate new short supply chains with national processing and sales of products, whether this be for Indonesian crop production or rabbitfish (Siganus spp.)…”

Section: Diversifying Market Chainsmentioning

confidence: 99%

Seaweed Aquaculture in Indonesia Contributes to Social and Economic Aspects of Livelihoods and Community Wellbeing

et al. 2021

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Seaweed farming in Indonesia is carried out throughout much of the archipelago and is mainly undertaken by smallholder farmers. Indonesia is the largest global producer of the red seaweeds Kappaphycus and Eucheuma, which are used to produce carrageenan, and is a major producer of Gracilaria, which is used to produce agar. Seaweed farming is attractive to farmers in rural coastal communities because capital and operating costs are low, farming techniques are not technically demanding, labour requirements are relatively low (allowing farmers to engage in other livelihoods), and production cycles are short (30–45 days), providing regular income. Using reported values for seaweed-farming income, we conclude that seaweed farming can, but does not always, lift rural households above the Indonesian poverty line. In addition to direct financial benefits, seaweed farming also contributes to human and social capital within seaweed farming households and communities. Achieving continued economic and social benefits from seaweed farming will require additional policy development, as well as research and development to support improved and more consistent seaweed productivity and improved product quality at the farm level, provision of effective extension and technical support services, and diversification of the existing value chains in order to reduce the impacts of price fluctuations that are associated with limited global commodity chains.

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2023

Algae in Agrobiology

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Seaweed dietary supplements enhance the innate immune response of the mottled rabbitfish, Siganus fuscescens

Cited by 19 publications

References 38 publications

Is the Intestinal Bacterial Community in the Australian Rabbitfish Siganus fuscescens Influenced by Seaweed Supplementation or Geography?

Is the Intestinal Bacterial Community in the Australian Rabbitfish Siganus fuscescens Influenced by Seaweed Supplementation or Geography?

Seaweed Aquaculture in Indonesia Contributes to Social and Economic Aspects of Livelihoods and Community Wellbeing

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