Day/night variations of feeding and immune ...
Type de document :
Compte-rendu et recension critique d'ouvrage
Titre :
Day/night variations of feeding and immune activities in larvae of the European grapevine moth, Lobesia botrana.
Auteur(s) :
Iltis, Corentin [Auteur]
Biogéosciences [UMR 6282] [BGS]
Earth and Life Institute [Louvain-La-Neuve] [ELI]
Moreau, Jérôme [Auteur]
Biogéosciences [UMR 6282] [BGS]
Centre d'Études Biologiques de Chizé - UMR 7372 [CEBC]
La Rochelle Université [ULR]
Gamb, Guillaume [Auteur]
Biogéosciences [UMR 6282] [BGS]
Manière, Corentin [Auteur]
Biogéosciences [UMR 6282] [BGS]
Wichlacz, Celine [Auteur]
Centre d’Infection et d’Immunité de Lille - INSERM U 1019 - UMR 9017 - UMR 8204 [CIIL]
Tasiemski, Aurélie [Auteur]
Centre d’Infection et d’Immunité de Lille - INSERM U 1019 - UMR 9017 - UMR 8204 [CIIL]
Thiéry, Denis [Auteur]
Santé et agroécologie du vignoble [UMR SAVE]
Louâpre, Philippe [Auteur]
Biogéosciences [UMR 6282] [BGS]
Biogéosciences [UMR 6282] [BGS]
Earth and Life Institute [Louvain-La-Neuve] [ELI]
Moreau, Jérôme [Auteur]
Biogéosciences [UMR 6282] [BGS]
Centre d'Études Biologiques de Chizé - UMR 7372 [CEBC]
La Rochelle Université [ULR]
Gamb, Guillaume [Auteur]
Biogéosciences [UMR 6282] [BGS]
Manière, Corentin [Auteur]
Biogéosciences [UMR 6282] [BGS]
Wichlacz, Celine [Auteur]
Centre d’Infection et d’Immunité de Lille - INSERM U 1019 - UMR 9017 - UMR 8204 [CIIL]
Tasiemski, Aurélie [Auteur]
Centre d’Infection et d’Immunité de Lille - INSERM U 1019 - UMR 9017 - UMR 8204 [CIIL]
Thiéry, Denis [Auteur]
Santé et agroécologie du vignoble [UMR SAVE]
Louâpre, Philippe [Auteur]
Biogéosciences [UMR 6282] [BGS]
Titre de la revue :
Entomologia Generalis
Pagination :
601-614
Date de publication :
2021-12-07
ISSN :
0171-8177
Mot(s)-clé(s) en anglais :
Tortricidae
basal immunity
ecological and evolutionary immunology
nychthemeral variations
haemocyte types
basal immunity
ecological and evolutionary immunology
nychthemeral variations
haemocyte types
Discipline(s) HAL :
Sciences de l'environnement/Biodiversité et Ecologie
Sciences du Vivant [q-bio]/Immunologie
Sciences du Vivant [q-bio]/Immunologie
Résumé en anglais : [en]
Daily varying intensities of exposure to infectious enemies should select for the evolution of a daily structure of host immunity with a marked peak and trough (i.e. a daily rhythm). Such nychthemeral variations have been ...
Lire la suite >Daily varying intensities of exposure to infectious enemies should select for the evolution of a daily structure of host immunity with a marked peak and trough (i.e. a daily rhythm). Such nychthemeral variations have been documented for insect inducible immunity (responsiveness to microbial challenge), while the existence of similar daily patterns in basal immunity remains unexplored. Basal immunity is defined as the background, readily available protection aimed at preventing infection at any time. Daily rhythmic elevation of basal immunity should bear substantial costs and be performed only when facing highly predictable changes in threat of infection. This could be the case for risk of food-borne infection, presumably fluctuating with daily patterns of host feeding activity. This study investigated the existence of day/night variations in feeding activity and basal immunity, using larvae of the moth Lobesia botrana (Lepidoptera: Tortricidae) raised under a realistic daily cycle of light and temperature conditions. At night, larvae (i) spent a greater amount of time feeding, (ii) displayed a higher total phenoloxidase activity and (iii) underwent subtle changes in the balance of some haemocyte types newly described for this species (increase in the relative abundances of prohaemocytes and plasmatocytes, decrease in the one of oenocytoids). These data provide the first evidence of nychthemeral variations of basal immunity in an insect model, with peaks in some immune effectors co-occurring with maximal feeding activity (during nighttime). The ecological implications and the contribution of this work to improve the general understanding of the temporal structure of immunity are discussed.Lire moins >
Lire la suite >Daily varying intensities of exposure to infectious enemies should select for the evolution of a daily structure of host immunity with a marked peak and trough (i.e. a daily rhythm). Such nychthemeral variations have been documented for insect inducible immunity (responsiveness to microbial challenge), while the existence of similar daily patterns in basal immunity remains unexplored. Basal immunity is defined as the background, readily available protection aimed at preventing infection at any time. Daily rhythmic elevation of basal immunity should bear substantial costs and be performed only when facing highly predictable changes in threat of infection. This could be the case for risk of food-borne infection, presumably fluctuating with daily patterns of host feeding activity. This study investigated the existence of day/night variations in feeding activity and basal immunity, using larvae of the moth Lobesia botrana (Lepidoptera: Tortricidae) raised under a realistic daily cycle of light and temperature conditions. At night, larvae (i) spent a greater amount of time feeding, (ii) displayed a higher total phenoloxidase activity and (iii) underwent subtle changes in the balance of some haemocyte types newly described for this species (increase in the relative abundances of prohaemocytes and plasmatocytes, decrease in the one of oenocytoids). These data provide the first evidence of nychthemeral variations of basal immunity in an insect model, with peaks in some immune effectors co-occurring with maximal feeding activity (during nighttime). The ecological implications and the contribution of this work to improve the general understanding of the temporal structure of immunity are discussed.Lire moins >
Langue :
Anglais
Vulgarisation :
Non
Projet Européen :
Commentaire :
14 pages
Source :
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