ArticleOecologia2014
Fine-scale spatial age segregation in the limited foraging area of an inshore seabird species, the little penguin.
Article in Oecologia, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed, 64 citations in OpenAlex.
- Age-related nest-site segregation in a solitary nesting population of white stork Ciconia Ciconia.Frontiers in zoology · 2025Article
- Spatial Variation in Body Condition of a Coastal Sentinel, the Little Penguin, Reflects Marine and Terrestrial Factors.Ecology and evolution · 2025Article
- Divorce Rates Better Predict Population-Level Reproductive Success in Little Penguins Than Foraging Behaviour or Environmental Factors.Ecology and evolution · 2025Article
- Exploring subcolony differences in foraging and reproductive success: the influence of environmental conditions on a central place foraging seabird.Royal Society open science · 2023Article
- Consistent Site-Specific Foraging Behaviours of Yellow-eyed Penguins/Hoiho Breeding on Stewart Island, New Zealand.Biology · 2022Article
- Making the most of the old age: Autumn breeding as an extra reproductive investment in older seabirds.Ecology and evolution · 2021Article
- Article
- Oceanic thermal structure mediates dive sequences in a foraging seabird.Ecology and evolution · 2020Article
- Prior exposure to capture heightens the corticosterone and behavioural responses of little penguins (Eudyptula minor) to acute stress.Conservation physiology · 2016Article
- Environmental variability drives shifts in the foraging behaviour and reproductive success of an inshore seabird.Oecologia · 2015Article
- Habitat use and sex-specific foraging behaviour of Adélie penguins throughout the breeding season in Adélie Land, East Antarctica.Movement ecology · 2015Article
- Carry-over body mass effect from winter to breeding in a resident seabird, the little penguin.Royal Society open science · 2015Article
- Social networks reveal sex- and age-patterned social structure in Butler's gartersnakes (Behavioral ecology : official journal of the International Society for Behavioral EcologyArticle
- Article
Corrections and comments
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Authors and funding
4 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Competition for food resources can result in spatial and dietary segregation among individuals from the same species. Few studies have looked at such segregations with the combined effect of sex and age in species with short foraging ranges. In this study we examined the 3D spatial use of the environment in a species with a limited foraging area. We equipped 26 little penguins (Eudyptula minor) of known age, sex, and breeding output with GPS (location) and accelerometer (body acceleration and dive depth) loggers. We obtained dietary niche information from the isotopic analysis of blood tissue. We controlled for confounding factors of foraging trip length and food availability by sampling adults at guard stage when parents usually make one-day trips. We observed a spatial segregation between old (>11 years old) and middle-aged penguins (between 5 and 11 years old) in the foraging area. Old penguins foraged closer to the shore, in shallower water. Despite observing age-specific spatial segregation, we found no differences in the diving effort and foraging efficiency between age classes and sexes. Birds appeared to target similar prey types, but showed age-specific variation in their isotopic niche width. We hypothesize that this age-specific segregation was primarily determined by a "cohort effect" that would lead individuals sharing a common life history (i.e. having fledged and dispersed around the same age) to forage preferentially together or to share similar foraging limitations.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.