Beyond habitat requirements: individual fine-scale site fidelity in a colony of the Galapagos sea lion (Zalophus wollebaeki) creates conditions for social structuring

@article{Wolf2007BeyondHR,
  title={Beyond habitat requirements: individual fine-scale site fidelity in a colony of the Galapagos sea lion (Zalophus wollebaeki) creates conditions for social structuring},
  author={Jochen B. W. Wolf and Fritz Trillmich},
  journal={Oecologia},
  year={2007},
  volume={152},
  pages={553-567}
}
Site fidelity has been widely discussed, but rarely been related explicitly to a species’ social context. This is surprising, as fine-scale site fidelity constitutes an important structural component in animal societies by setting limits to an individual’s social interaction space. The study of fine-scale site fidelity is complicated by the fact that it is inextricably linked to patterns of habitat use. We here document fine-scale site fidelity in the Galapagos sea lion (Zalophus wollebaeki… 
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104 Citations
Background Citations
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Methods Citations
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Results Citations
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104 Citations

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Citation Type

Site fidelity of male Galápagos sea lions: a lifetime perspective
TLDR
The degree of site fidelity observed within the colony suggests familiarity and thus a high degree of tolerance among individuals using the same areas, which seems to facilitate attendance in the colony and thus the possibility to prospect for oestrus females.
Incorporating in situ habitat patchiness in site selection models reveals that site fidelity is not always a consequence of animal choice
TLDR
In situ habitat distribution data and animal movement simulations are used to investigate behavioural choice in site fidelity patterns and show the importance to consider spatial distribution of habitats in understanding patterns of animal movement associated with animal choices and site fidelity.
Why come back home? Breeding-site fidelity varies with group size and parasite load in a colonial bird
TLDR
Investigation of how the extent of infestation by ectoparasites and colony size affected breeders' colony site fidelity between years found site fidelity was greatest at nonfumigated sites that changed the least in size between years.
Fine-scale movement and habitat use of a prairie stream fish assemblage
TLDR
The authors' findings indicate considerable variation in habitat use and movement occurs among species over a 24-h period, and suggests ecologists can broaden the interpretation of processes influencing community structure by quantifying species distributions across a range of spatial and temporal scales.
Social implications of a colony collapse in a highly structured vertebrate species (long‐tailed bat, Chalinolobus tuberculatus)
TLDR
Investigation of individual- and colony-level implications of the collapse of a colony of bats in the Eglinton Valley, New Zealand found acceptance of individuals into other colonies demonstrates resilience of highly structured vertebrate populations to local crashes.
Space use and social association in a gregarious ungulate: Testing the conspecific attraction and resource dispersion hypotheses
TLDR
The finding that conspecific attraction is likely related to access to forage suggests that further fragmentation of caribou habitat could limit social association among cariboughs, particularly in winter when access to resources may be limited.
Pupping-site fidelity among individual Steller sea lions (Eumetopias jubatus) at Chiswell Island, Alaska
TLDR
Pupping-site fidelity in Steller sea lions was investigated during the breeding seasons from 2001 to 2005 at Chiswell Island, a small rookery in the Gulf of Alaska, indicating that multiple births occurred at some locations throughout the breeding season.
Two behavioural traits promote fine-scale species segregation and moderate hybridisation in a recovering sympatric fur seal population
TLDR
Two behavioural traits were found to be important in maintaining this stable population structure, and habitat type was a strong indicator of where species locate and a potentially powerful predictor of future directions of hybridisation.
Fine-scale matrilineal population structure in the Galapagos fur seal and its implications for conservation management
TLDR
A population genetic survey in the Galapagos fur seal, Arctocephalus galapagoensis, an endangered pinniped endemic to a small geographic range, finds remarkably strong fine-scale matrilineal population structure, with 33.9 % of the mtDNA variation being partitioned among colonies separated by as little as 70 km swimming distance.
Causes and consequences of fine-scale population structure in a critically endangered freshwater seal Valtonen, Mia
Background: Small, genetically uniform populations may face an elevated risk of extinction due to reduced environmental adaptability and individual fitness. Fragmentation can intensify these genetic…
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