Amphibian infection tolerance to chytridiomycosis

Animal defences against infection involve two distinct but complementary mechanisms: tolerance and resistance. Tolerance measures the animal's ability to limit detrimental effects from a given infection, whereas resistance is the ability to limit the intensity of that infection. Tolerance is a valuable defence for highly prevalent, persistent or endemic infections where mitigation strategies based on traditional resistance mechanisms are less effective or evolutionarily stable. Selective breeding of amphibians for enhanced tolerance to Batrachochytrium spp. has been suggested as a strategy for mitigating the impacts of the fungal disease, chytridiomycosis. Here, we define infection tolerance and resistance in the context of chytridiomycosis, present evidence for variation in tolerance to chytridiomycosis, and explore epidemiological, ecological and evolutionary implications of tolerance to chytridiomycosis. We found that exposure risk and environmental moderation of infection burdens are major confounders of resistance and tolerance, chytridiomycosis is primarily characterized by variation in constitutive rather than adaptive resistance, tolerance is epidemiologically important in driving pathogen spread and maintenance, heterogeneity of tolerance leads to ecological trade-offs, and natural selection for resistance and tolerance is likely to be dilute. Improving our understanding of infection tolerance broadens our capacity for mitigating the ongoing impacts of emerging infectious diseases such as chytridiomycosis. This article is part of the theme issue 'Amphibian immunity: stress, disease and ecoimmunology'.

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:378

Enthalten in:

Philosophical transactions of the Royal Society of London. Series B, Biological sciences - 378(2023), 1882 vom: 31. Juli, Seite 20220133

Sprache:

Englisch

Beteiligte Personen:

Grogan, Laura F [VerfasserIn]
Mangan, Madelyn J [VerfasserIn]
McCallum, Hamish I [VerfasserIn]

Links:

Volltext

Themen:

Animal
Defence
Disease
Frogs
Host
Journal Article
Pathogen
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.
Review

Anmerkungen:

Date Completed 13.06.2023

Date Revised 15.06.2023

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1098/rstb.2022.0133

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM358076358