ArticleMovement ecology2020
Effects of age on foraging behavior in two closely related albatross species.
Article in Movement ecology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Per- and Polyfluoroalkyl Substances (PFAS) in Sub-Antarctic Seabirds: Insights into Long-Range Transport and Bioaccumulation of Legacy and Replacement Chemicals.ACS environmental Au · 2025Article
- Avian seed dispersal function is age dependent.Proceedings. Biological sciences · 2025Article
- Age effects on Nazca booby foraging performance are largely constant across variation in the marine environment: Results from a 5-year study in Galápagos.Ecology and evolution · 2023Article
- High-resolution recording of foraging behaviour over multiple annual cycles shows decline in old Adélie penguins' performance.Proceedings. Biological sciences · 2023Article
- Impact of host age on viral and bacterial communities in a waterbird population.The ISME journal · 2023Article
- Partner intrinsic characteristics influence foraging trip duration, but not coordination of care in wandering albatrossesEcology and evolution · 2022Article
- Following the niche: the differential impact of the last glacial maximum on four European ungulates.Communications biology · 2022Article
- Effects of age, sex, and ENSO phase on foraging and flight performance in Nazca boobies.Ecology and evolution · 2021Article
- Inter-individual differences in foraging tactics of a colonial raptor: consistency, weather effects, and fitness correlates.Movement ecology · 2020Article
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundForaging performance is widely hypothesized to play a key role in shaping age-specific demographic rates in wild populations, yet the underlying behavioral changes are poorly understood. Seabirds are among the longest-lived vertebrates, and demonstrate extensive age-related variation in survival, breeding frequency and success. The breeding season is a particularly critical phase during the annual cycle, but it remains unclear whether differences in experience or physiological condition related to age interact with the changing degree of the central-place constraint in shaping foraging patterns in time and space.
methodsHere we analyze tracking data collected over two decades from congeneric black-browed (BBA) and grey-headed (GHA) albatrosses,
resultsYoung breeders of both species showed improvements in foraging competency with age, reducing foraging trip duration until age 26. Thereafter, there were signs of foraging senescence; older adults took gradually longer trips, narrowed their habitat preference (foraging within a smaller range of sea surface temperatures) (GHA), made fewer landings and rested on the water for longer (BBA). Some age-specific effects were apparent for each species only in certain breeding stages, highlighting the complex interaction between intrinsic drivers in determining individual foraging strategies.
conclusionsUsing cross-sectional data, this study highlighted clear age-related patterns in foraging behavior at the population-level for two species of albatrosses. These trends are likely to have important consequences for the population dynamics of these threatened seabirds, as young or old individuals may be more vulnerable to worsening environmental conditions.
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