ArticleOecologia2015
Differences in foraging ecology align with genetically divergent ecotypes of a highly mobile marine top predator.
Article in Oecologia, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed.
- Population Genomics and the Environmental Drivers of Population Structure in a Cosmopolitan Marine Predator, Tursiops truncatus.Molecular ecology · 2025Article
- DNA-metabarcoding supports trophic flexibility and reveals new prey species for the Galapagos sea lion.Ecology and evolution · 2024Article
- Declines and recovery in endangered Galapagos pinnipeds during the El Niño event.Scientific reports · 2021Article
- Individuality counts: A new comprehensive approach to foraging strategies of a tropical marine predator.Oecologia · 2021Article
- Diving deep into trouble: the role of foraging strategy and morphology in adapting to a changing environment.Conservation physiology · 2020Article
- Intraspecific variation in feeding strategies of Galapagos sea lions: A case of trophic specialization.PloS one · 2017Article
- Decadal-scale variation in diet forecasts persistently poor breeding under ocean warming in a tropical seabird.PloS one · 2017Article
- Population Abundance of the Endangered Galapagos Sea Lion Zalophus wollebaeki in the Southeastern Galapagos Archipelago.PloS one · 2017Article
- Pup Vibrissae Stable Isotopes Reveal Geographic Differences in Adult Female Southern Sea Lion Habitat Use during Gestation.PloS one · 2016Article
- Maternal flexibility in Galápagos sea lions mitigates climate impacts but not population decline.Behavioral ecology : official journal of the International Society for Behavioral EcologyArticle
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Authors and funding
5 authors.
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Abstract
Foraging differentiation within a species can contribute to restricted gene flow between ecologically different groups, promoting ecological speciation. Galapagos sea lions (Zalophus wollebaeki) show genetic and morphological divergence between the western and central archipelago, possibly as a result of an ecologically mediated contrast in the marine habitat. We use global positioning system (GPS) data, time-depth recordings (TDR), stable isotope and scat data to compare foraging habitat characteristics, diving behaviour and diet composition of Galapagos sea lions from a western and a central colony. We consider both juvenile and adult life stages to assess the potential role of ontogenetic shifts that can be crucial in shaping foraging behaviour and habitat choice for life. We found differences in foraging habitat use, foraging style and diet composition that aligned with genetic differentiation. These differences were consistent between juvenile and adult sea lions from the same colony, overriding age-specific behavioural differences. Our study contributes to an understanding of the complex interaction of ecological condition, plastic behavioural response and genetic make-up of interconnected populations.
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