Inclusive fitness consequences of dispersal decisions in a cooperatively breeding bird, the long-tailed tit (Aegithalos caudatus)
Natal dispersal is a demographic trait with profound evolutionary, ecological, and behavioral consequences. However, our understanding of the adaptive value of dispersal patterns is severely hampered by the difficulty of measuring the relative fitness consequences of alternative dispersal strategies...
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| Format: | Journal article |
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National Academy of Sciences
2018
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| _version_ | 1797101130551918592 |
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| author | Green, J Hatchwell, B |
| author_facet | Green, J Hatchwell, B |
| author_sort | Green, J |
| collection | OXFORD |
| description | Natal dispersal is a demographic trait with profound evolutionary, ecological, and behavioral consequences. However, our understanding of the adaptive value of dispersal patterns is severely hampered by the difficulty of measuring the relative fitness consequences of alternative dispersal strategies in natural populations. This is especially true in social species, in which natal philopatry allows kin selection to operate, so direct and indirect components of inclusive fitness have to be considered when evaluating selection on dispersal. Here, we use lifetime reproductive success data from a long-term study of a cooperative breeder, the long-tailed tit Aegithalos caudatus, to quantify the direct and indirect components of inclusive fitness. We show that dispersal has a negative effect on the accrual of indirect fitness, and hence inclusive fitness, by males. In contrast, the inclusive, predominantly direct, fitness of females increases with dispersal distance. We conclude that the conflicting fitness consequences of dispersal in this species result in sexually antagonistic selection on this key demographic parameter. |
| first_indexed | 2024-03-07T05:47:30Z |
| format | Journal article |
| id | oxford-uuid:e7b4d883-442c-4c69-a882-04d28dba1271 |
| institution | University of Oxford |
| last_indexed | 2024-03-07T05:47:30Z |
| publishDate | 2018 |
| publisher | National Academy of Sciences |
| record_format | dspace |
| spelling | oxford-uuid:e7b4d883-442c-4c69-a882-04d28dba12712022-03-27T10:40:56ZInclusive fitness consequences of dispersal decisions in a cooperatively breeding bird, the long-tailed tit (Aegithalos caudatus)Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:e7b4d883-442c-4c69-a882-04d28dba1271Symplectic Elements at OxfordNational Academy of Sciences2018Green, JHatchwell, BNatal dispersal is a demographic trait with profound evolutionary, ecological, and behavioral consequences. However, our understanding of the adaptive value of dispersal patterns is severely hampered by the difficulty of measuring the relative fitness consequences of alternative dispersal strategies in natural populations. This is especially true in social species, in which natal philopatry allows kin selection to operate, so direct and indirect components of inclusive fitness have to be considered when evaluating selection on dispersal. Here, we use lifetime reproductive success data from a long-term study of a cooperative breeder, the long-tailed tit Aegithalos caudatus, to quantify the direct and indirect components of inclusive fitness. We show that dispersal has a negative effect on the accrual of indirect fitness, and hence inclusive fitness, by males. In contrast, the inclusive, predominantly direct, fitness of females increases with dispersal distance. We conclude that the conflicting fitness consequences of dispersal in this species result in sexually antagonistic selection on this key demographic parameter. |
| spellingShingle | Green, J Hatchwell, B Inclusive fitness consequences of dispersal decisions in a cooperatively breeding bird, the long-tailed tit (Aegithalos caudatus) |
| title | Inclusive fitness consequences of dispersal decisions in a cooperatively breeding bird, the long-tailed tit (Aegithalos caudatus) |
| title_full | Inclusive fitness consequences of dispersal decisions in a cooperatively breeding bird, the long-tailed tit (Aegithalos caudatus) |
| title_fullStr | Inclusive fitness consequences of dispersal decisions in a cooperatively breeding bird, the long-tailed tit (Aegithalos caudatus) |
| title_full_unstemmed | Inclusive fitness consequences of dispersal decisions in a cooperatively breeding bird, the long-tailed tit (Aegithalos caudatus) |
| title_short | Inclusive fitness consequences of dispersal decisions in a cooperatively breeding bird, the long-tailed tit (Aegithalos caudatus) |
| title_sort | inclusive fitness consequences of dispersal decisions in a cooperatively breeding bird the long tailed tit aegithalos caudatus |
| work_keys_str_mv | AT greenj inclusivefitnessconsequencesofdispersaldecisionsinacooperativelybreedingbirdthelongtailedtitaegithaloscaudatus AT hatchwellb inclusivefitnessconsequencesofdispersaldecisionsinacooperativelybreedingbirdthelongtailedtitaegithaloscaudatus |