Daily activity is repeatable but varies across the breeding season in female great tits DOI
Emily K. Elderbrock, Geoffrey Brown, Ned A. Dochtermann

et al.

Behavioral Ecology, Journal Year: 2024, Volume and Issue: 36(1)

Published: Dec. 4, 2024

Abstract Wild animals typically organize activity around a 24-h day and daily timing across the year is optimized for both survival reproductive success. Among-individual variation in chronotype, where individuals differ when they begin or end their active relative to cue such as photoperiod, often exists within population. Both intrinsic extrinsic factors contribute this patterns may change different life-history stages energetic investment changes. Here we describe population level changes free-living female great tit (Parus major) of onset offset well assess repeatability within- across-breeding stages. We fitted individual females with accelerometers track prior nest building through chick rearing. Prior clutch initiation began before sunrise, however, days laying first egg, was delayed until after sunrise. Females ended sunset monitoring period earliest during egg incubation. In addition, exhibited greater among- within-individual variance parental care. Female moderately repeatable breeding strongly covaried several These findings expand our understanding reproduction potential fitness implications chronotype wild animals.

Language: Английский

Daily activity is repeatable but varies across the breeding season in female great tits DOI
Emily K. Elderbrock, Geoffrey Brown, Ned A. Dochtermann

et al.

Behavioral Ecology, Journal Year: 2024, Volume and Issue: 36(1)

Published: Dec. 4, 2024

Abstract Wild animals typically organize activity around a 24-h day and daily timing across the year is optimized for both survival reproductive success. Among-individual variation in chronotype, where individuals differ when they begin or end their active relative to cue such as photoperiod, often exists within population. Both intrinsic extrinsic factors contribute this patterns may change different life-history stages energetic investment changes. Here we describe population level changes free-living female great tit (Parus major) of onset offset well assess repeatability within- across-breeding stages. We fitted individual females with accelerometers track prior nest building through chick rearing. Prior clutch initiation began before sunrise, however, days laying first egg, was delayed until after sunrise. Females ended sunset monitoring period earliest during egg incubation. In addition, exhibited greater among- within-individual variance parental care. Female moderately repeatable breeding strongly covaried several These findings expand our understanding reproduction potential fitness implications chronotype wild animals.

Language: Английский

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