Immune challenge reduces daily activity period in free-living birds for three weeks

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Lennon, Rosie J.Lund University,Lunds universitet,Enhet akvatisk ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Akvatisk ekologi,Forskargrupper vid Lunds universitet,Division aquatic ecology,Department of Biology,Faculty of Science,Aquatic Ecology,Lund University Research Groups (författare)

Immune challenge reduces daily activity period in free-living birds for three weeks

Artikel/kapitelEngelska2023

Förlag, utgivningsår, omfång ...

2023
11 s.

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LIBRIS-ID:oai:lup.lub.lu.se:6cf1caa6-38b1-432f-b5f5-bbd6c4653c10
https://lup.lub.lu.se/record/6cf1caa6-38b1-432f-b5f5-bbd6c4653c10URI
https://doi.org/10.1098/rspb.2023.0794DOI

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Språk:engelska
Sammanfattning på:engelska

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Anmärkningar

Non-lethal infections are common in free-living animals and the associated sickness behaviours can impact crucial life-history trade-offs. However, little is known about the duration and extent of such sickness behaviours in free-living animals, and consequently how they affect life-history decisions. Here, free-living Eurasian blackbirds, Turdus merula, were immune-challenged with lipopolysaccharide (LPS) to mimic a bacterial infection and their behaviour was monitored for up to 48 days using accelerometers. As expected, immune-challenged birds were less active than controls within the first 24 h. Unexpectedly, this reduced activity remained detectable for 20 days, before both groups returned to similar activity levels. Furthermore, activity was positively correlated with a pre-experimental index of complement activity, but only in immune-challenged birds, suggesting that sickness behaviours are modulated by constitutive immune function. Differences in daily activity levels stemmed from immune-challenged birds resting earlier at dusk than control birds, while activity levels between groups were similar during core daytime hours. Overall, activity was reduced by 19% in immune-challenged birds and they were on average almost 1 h less active per day for 20 days. This unexpected longevity in sickness behaviour may have severe implications during energy-intense annual-cycle stages (e.g. breeding, migration, winter). Thus, our data help to understand the consequences of non-lethal infections on free-living animals.

Ämnesord och genrebeteckningar

NATURVETENSKAP Biologi Etologi hsv//swe
NATURAL SCIENCES Biological Sciences Behavioural Sciences Biology hsv//eng
NATURVETENSKAP Biologi Ekologi hsv//swe
NATURAL SCIENCES Biological Sciences Ecology hsv//eng
NATURVETENSKAP Biologi Zoologi hsv//swe
NATURAL SCIENCES Biological Sciences Zoology hsv//eng
eco-immunology
eco-physiology
immunity
inflammation
life-history ecology
pathogen

Biuppslag (personer, institutioner, konferenser, titlar ...)

Ronanki, ShivaniLund University,Lunds universitet,Evolutionär ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Ekologisk och evolutionär fysiologi,Forskargrupper vid Lunds universitet,Evolutionary ecology,Department of Biology,Faculty of Science,Ecological and Evolutionary Physiology,Lund University Research Groups(Swepub:lu)sh8368ro (författare)
Hegemann, ArneLund University,Lunds universitet,Enhet akvatisk ekologi,Biologiska institutionen,Naturvetenskapliga fakulteten,Akvatisk ekologi,Forskargrupper vid Lunds universitet,Ekologisk och evolutionär fysiologi,Molekylär ekologi och evolution,CAnMove - Centrum för forskning om djurs spridning och flyttning,Division aquatic ecology,Department of Biology,Faculty of Science,Aquatic Ecology,Lund University Research Groups,Ecological and Evolutionary Physiology,Molecular Ecology and Evolution Lab,CAnMove - Centre for Animal Movement Research(Swepub:lu)biol-arh (författare)
Enhet akvatisk ekologiBiologiska institutionen (creator_code:org_t)

Sammanhörande titlar

Ingår i:Proceedings of the Royal Society B: Biological Sciences290:20050962-8452

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Av författaren/redakt...: Lennon, Rosie J.; Ronanki, Shivani; Hegemann, Arne

Om ämnet

NATURVETENSKAP: NATURVETENSKAP; och Biologi; och Etologi

NATURVETENSKAP: NATURVETENSKAP; och Biologi; och Ekologi

NATURVETENSKAP: NATURVETENSKAP; och Biologi; och Zoologi

Artiklar i publikationen: Proceedings of t ...

Av lärosätet: Lunds universitet

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