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

Valentin Thepot; Alexandra Campbell; Nicholas A Paul; Michael A Rimmer

doi:10.1016/j.fsi.2021.03.018

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

Journal article

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

Valentin Thepot, Alexandra Campbell, Nicholas A Paul and Michael A Rimmer

Fish and Shellfish Immunology, Vol.113, pp.176-184

2021

DOI: https://doi.org/10.1016/j.fsi.2021.03.018

PMID: 33823246

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Abstract

Aquaculture

Innate Immunity

immunostimulant

disease

antibiotics

macroalgae

Disease is one of the major bottlenecks for aquaculture development, costing the industry in excess of US $6 billion each year. The increase in pressure to phase out some traditional approaches to disease control (e.g. antibiotics) is pushing farmers to search for alternatives to treat and prevent disease outbreaks, which do not have detrimental consequences (e.g. antibiotic resistance). We tested the effects of eleven seaweed species and four established fish immunostimulants on the innate immune response (cellular and humoral immunity) of rabbitfish Siganus fuscescens. All supplements including different seaweeds from the three groups (Chlorophyta, Phaeophyta and Rhodophyta) were included in the fish pellet at 3% (by weight) and had variably positive effects across the four innate immune parameters we measured compared to control fish. Diets supplemented with the red seaweed Asparagopsis taxiformis and the brown seaweed Dictyota intermedia led to the largest boosts in humoral and cellular innate immune defences, including particularly significant increases in haemolytic activity. Diets supplemented with Ulva fasciata also led to promising positive effects on the fish innate immune responses. We conclude that dietary seaweed supplements can boost the immune response of S. fuscescens and thus the top three species highlighted in this study should be further investigated for this emerging aquaculture species and other fish species.

Details

Title: Seaweed dietary supplements enhance the innate immune response of the mottled rabbitfish, Siganus fuscescens
Authors: Valentin Thepot (Author) - University of the Sunshine Coast, Queensland, School of Science, Technology and Engineering
Alexandra Campbell (Author) - University of the Sunshine Coast, Queensland, School of Health and Behavioural Sciences - Legacy
Nicholas A Paul (Author) - University of the Sunshine Coast, Queensland, School of Science, Technology and Engineering
Michael A Rimmer (Author) - University of the Sunshine Coast, Queensland, School of Science, Technology and Engineering
Publication details: Fish and Shellfish Immunology, Vol.113, pp.176-184
Publisher: Academic Press
Date published: 2021
DOI: 10.1016/j.fsi.2021.03.018
ISSN: 1095-9947; 1050-4648
PMID: 33823246
Organisation Unit: School of Health - Biomedicine; School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Health and Sport Sciences - Legacy; School of Science, Technology and Engineering; School of Health and Behavioural Sciences - Legacy
Language: English
Record Identifier: 99521808502621
Output Type: Journal article

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Web Of Science research areas: Fisheries; Immunology; Marine & Freshwater Biology; Veterinary Sciences