Inbreeding in the seychelles warbler: Environment-dependent maternal effects
(2004) In Evolution 58(9). p.2037-2048- Abstract
- The deleterious effects of inbreeding can be substantial in wild populations and mechanisms to avoid such matings have evolved in many organisms. In situations where social mate choice is restricted, extrapair paternity may be a strategy used by females to avoid inbreeding and increase offspring heterozygosity. In the cooperatively breeding Seychelles warbler, Acrocephalus sechellensis, neither social nor extrapair mate choice was used to avoid inbreeding facultatively, and close inbreeding occurred in approximately 5% of matings. However, a higher frequency of extra-group paternity may be selected for in female subordinates because this did reduce the frequency of mating between close relatives. Inbreeding resulted in reduced individual... (More)
- The deleterious effects of inbreeding can be substantial in wild populations and mechanisms to avoid such matings have evolved in many organisms. In situations where social mate choice is restricted, extrapair paternity may be a strategy used by females to avoid inbreeding and increase offspring heterozygosity. In the cooperatively breeding Seychelles warbler, Acrocephalus sechellensis, neither social nor extrapair mate choice was used to avoid inbreeding facultatively, and close inbreeding occurred in approximately 5% of matings. However, a higher frequency of extra-group paternity may be selected for in female subordinates because this did reduce the frequency of mating between close relatives. Inbreeding resulted in reduced individual heterozygosity, which, against expectation, had an almost significant (P = 0.052). positive effect on survival. Conversely, low heterozygosity in the genetic mother was linked to reduced offspring survival, and the magnitude of this intergenerational inbreeding depression effect was environment-dependent. Because we controlled for genetic effects and most environmental effects (through the experimental cross-fostering of nestlings), we conclude that the reduced survival was a result of maternal effects. Our results show that inbreeding can have complicated effects even within a genetic bottlenecked population where the "purging'' of recessive alleles is expected to reduce the effects of inbreeding depression. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/264339
- author
- Richardson, David LU ; Komdeur, J and Burke, T
- organization
- publishing date
- 2004
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- inbreeding depression, inbreeding avoidance, environmental variation, heterozygosity, maternal effects, microsatellites, survival
- in
- Evolution
- volume
- 58
- issue
- 9
- pages
- 2037 - 2048
- publisher
- Wiley-Blackwell
- external identifiers
-
- pmid:15521460
- wos:000224339500013
- scopus:5344233457
- ISSN
- 1558-5646
- DOI
- 10.1111/j.0014-3820.2004.tb00488.x
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Animal Ecology (Closed 2011) (011012001)
- id
- 9444f2c9-cd5f-4155-a76d-b62fd71b6098 (old id 264339)
- date added to LUP
- 2016-04-01 16:06:39
- date last changed
- 2022-03-30 05:32:46
@article{9444f2c9-cd5f-4155-a76d-b62fd71b6098,
abstract = {{The deleterious effects of inbreeding can be substantial in wild populations and mechanisms to avoid such matings have evolved in many organisms. In situations where social mate choice is restricted, extrapair paternity may be a strategy used by females to avoid inbreeding and increase offspring heterozygosity. In the cooperatively breeding Seychelles warbler, Acrocephalus sechellensis, neither social nor extrapair mate choice was used to avoid inbreeding facultatively, and close inbreeding occurred in approximately 5% of matings. However, a higher frequency of extra-group paternity may be selected for in female subordinates because this did reduce the frequency of mating between close relatives. Inbreeding resulted in reduced individual heterozygosity, which, against expectation, had an almost significant (P = 0.052). positive effect on survival. Conversely, low heterozygosity in the genetic mother was linked to reduced offspring survival, and the magnitude of this intergenerational inbreeding depression effect was environment-dependent. Because we controlled for genetic effects and most environmental effects (through the experimental cross-fostering of nestlings), we conclude that the reduced survival was a result of maternal effects. Our results show that inbreeding can have complicated effects even within a genetic bottlenecked population where the "purging'' of recessive alleles is expected to reduce the effects of inbreeding depression.}},
author = {{Richardson, David and Komdeur, J and Burke, T}},
issn = {{1558-5646}},
keywords = {{inbreeding depression; inbreeding avoidance; environmental variation; heterozygosity; maternal effects; microsatellites; survival}},
language = {{eng}},
number = {{9}},
pages = {{2037--2048}},
publisher = {{Wiley-Blackwell}},
series = {{Evolution}},
title = {{Inbreeding in the seychelles warbler: Environment-dependent maternal effects}},
url = {{http://dx.doi.org/10.1111/j.0014-3820.2004.tb00488.x}},
doi = {{10.1111/j.0014-3820.2004.tb00488.x}},
volume = {{58}},
year = {{2004}},
}