Consumption of carotenoids not increased by bacterial infection in brown trout embryos (Salmo trutta)

Autor: Laetitia G. E. Wilkins, Daniel Ortiz, Claus Wedekind, Véronique Vocat-Mottier, Laure Menin, Lucas Marques da Cunha
Jazyk: angličtina
Rok vydání: 2018
Předmět:
0301 basic medicine
0106 biological sciences
Male
Embryo
Nonmammalian
Trout
Virulence
Embryonic Development
lcsh:Medicine
Pseudomonas fluorescens
macromolecular substances
Xanthophylls
010603 evolutionary biology
01 natural sciences
Microbiology
03 medical and health sciences
Brown trout
Immunity
Zeaxanthins
polycyclic compounds
Animals
Carotenoids/analysis
Carotenoids/metabolism
Embryo
Nonmammalian/metabolism
Embryo
Nonmammalian/microbiology
Female
Lutein/analysis
Pseudomonas fluorescens/pathogenicity
Trout/growth & development
Trout/metabolism
Xanthophylls/analysis
Zeaxanthins/analysis
Salmo
lcsh:Science
Pathogen
Carotenoid
030304 developmental biology
chemistry.chemical_classification
0303 health sciences
Multidisciplinary
biology
organic chemicals
Lutein
lcsh:R
food and beverages
Embryo
biology.organism_classification
Carotenoids
biological factors
030104 developmental biology
chemistry
lcsh:Q
Zdroj: PLoS ONE, Vol 13, Iss 6, p e0198834 (2018)
PloS one, vol. 13, no. 6, pp. e0198834
ISSN: 1932-6203
Popis: Carotenoids are organic pigment molecules that play important roles in signalling, control of oxidative stress, and immunity. Fish allocate carotenoids to their eggs, which gives them the typical yellow to red colouration and supports their resistance against microbial infections. However, it is still unclear whether carotenoids act mainly as a shield against infection or are used up during the embryos’ immune defence. We investigated this question with experimental families produced from wild-caught brown trout (Salmo trutta). Singly raised embryos were either exposed to the bacterial pathogen Pseudomonas fluorescens or sham-treated at one of two stages during their development. A previous study on these experimental families reported positive effects of egg carotenoids on embryo growth and resistance against the infection. Here, we quantified carotenoid consumption in these infected and sham-infected maternal sib groups. We found that carotenoid contents mostly decreased during embryogenesis. However, these decreases were neither linked to the virulence induced by the pathogen nor dependent on the time point of infection. We conclude that egg carotenoids are not significantly used up by the embryos’ immune defence.
Databáze: OpenAIRE
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