ArticleThe Journal of animal ecology2019
Seasonal differences in baseline innate immune function are better explained by environment than annual cycle stage in a year-round breeding tropical songbird.
Article in The Journal of animal ecology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed, 23 citations in OpenAlex.
- Temporal Variation in Early-Life Conditions Impacts on Later-Life Levels of Infection in Sex Specific Ways.Ecology and evolution · 2025Article
- Daytime Light Deficiency Leads to Sex- and Brain Region-Specific Neuroinflammatory Responses in a Diurnal Rodent.Cellular and molecular neurobiology · 2023Article
- Recovery of constitutive immune function after migratory endurance flight in free-living birds.Biology letters · 2023Article
- Innate immune function and antioxidant capacity of nestlings of an African raptor covary with the level of urbanisation around breeding territories.The Journal of animal ecology · 2023Article
- Effects of manipulated food availability and seasonality on innate immune function in a passerine.The Journal of animal ecology · 2022Article
- Sex differences in immune gene expression in the brain of a small shorebird.Immunogenetics · 2022Article
- Effects of early-life conditions on innate immune function in adult zebra finches.The Journal of experimental biology · 2021Article
- Costs of reproduction and migration are paid in later return to the colony, not in physical condition, in a long-lived seabird.Oecologia · 2021Article
- Fitness outcomes in relation to individual variation in constitutive innate immune function.Proceedings. Biological sciences · 2020Article
- Prior exposure to long-day photoperiods alters immune responses and increases susceptibility to parasitic infection in stickleback.Proceedings. Biological sciences · 2020Article
- Patterns of annual and seasonal immune investment in a temporal reproductive opportunist.Proceedings. Biological sciences · 2020Article
- Geographic variation in baseline innate immune function does not follow variation in aridity along a tropical environmental gradient.Scientific reports · 2020Article
- A fruit diet rather than invertebrate diet maintains a robust innate immunity in an omnivorous tropical songbird.The Journal of animal ecology · 2020Article
- Migrating birds rapidly increase constitutive immune function during stopover.Royal Society open science · 2020Article
- Seasonal differences in baseline innate immune function are better explained by environment than annual cycle stage in a year-round breeding tropical songbird.The Journal of animal ecology · 2019Article
Corrections and comments
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Authors and funding
4 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Seasonal variation in innate immunity is often attributed to either temporal environmental variation or to life-history trade-offs that arise from specific annual cycle stages but decoupling them is difficult in natural populations. Here, we effectively decouple seasonal environmental variation from annual cycle stage effects by exploiting cross-seasonal breeding and moult in the tropical Common Bulbul Pycnonotus barbatus. We test how annual cycle stage interacts with a key seasonal environmental variable, rainfall, to determine immunity at population and individual level. If immune challenge varies with precipitation, we might expect immune function to be higher in the wet season due to increased environmental productivity. If breeding or moult imposes resource constraints on birds, depending on or independent of precipitation, we might expect lower immune indices during breeding or moult. We sampled blood from 818 birds in four annual cycle stage categories: breeding, moult, simultaneous breeding and moulting, or neither. We quantified indices of innate immunity (haptoglobin, nitric oxide (NO
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