Supplementary material from "Temporal dynamics of mother–offspring relationships in Bigg's killer whales: opportunities for kin-directed help by post-reproductive females" ...
Age-related changes in the patterns of local relatedness (kinship dynamics) can be a significant selective force shaping the evolution of life history and social behaviour. In humans and some species of toothed whales, average female relatedness increases with age, which can select for a prolonged p...
| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Article in Journal/Newspaper |
| Language: | unknown |
| Published: |
The Royal Society
2023
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.6084/m9.figshare.c.6659091.v1 https://rs.figshare.com/collections/Supplementary_material_from_Temporal_dynamics_of_mother_offspring_relationships_in_Bigg_s_killer_whales_opportunities_for_kin-directed_help_by_post-reproductive_females_/6659091/1 |
| Summary: | Age-related changes in the patterns of local relatedness (kinship dynamics) can be a significant selective force shaping the evolution of life history and social behaviour. In humans and some species of toothed whales, average female relatedness increases with age, which can select for a prolonged post-reproductive lifespan in older females due to both costs of reproductive conflict and benefits of late-life helping of kin. Killer whales ( Orcinus orca ) provide a valuable system for exploring social dynamics related to such costs and benefits in a mammal with an extended post-reproductive female lifespan. We use greater than 40 years of demographic and association data on the mammal-eating Bigg's killer whale to quantify how mother–offspring social relationships change with offspring age and identify opportunities for late-life helping and the potential for an intergenerational reproductive conflict. Our results suggest a high degree of male philopatry and female-biased budding dispersal in Bigg's killer ... |
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