dc.contributor.author | White, S | |
dc.contributor.author | Wilson, A | |
dc.date.accessioned | 2018-04-24T10:10:34Z | |
dc.date.issued | 2018-05-17 | |
dc.description.abstract | Among-individual variation in behaviour is a widespread phenomenon, with several
frameworks developed to explain its existence. Maternal effects, which can have significant
influence over evolutionary processes, are an under-studied source of behavioural variation.
Maternal effects are not necessarily static however, since their importance can change over
offspring ontogeny, typically declining with age relative to additive genetic effects. Here, using
a quantitative genetics approach, we test the prediction that maternal effects will influence age33
specific risk-taking behaviour in Trinidadian guppies, Poecilia reticulata. Individuals were
subject to a single open field trial as juveniles and up to 4 repeat trials as adults, with 5 traits
indicative of risk-taking behaviour measured in each trial. We then partitioned phenotypic
36 variance into additive genetic (VA) and maternal identity (VM) components, in addition to
37 testing brood size and maternal weight as specific sources of maternal effects. We found that
38 VM had significant influence over juvenile traits, with very low VA estimates. Whereas, in
39 adults, all traits were significantly heritable, with little support for VM. We also found a strong
40 influence of maternal traits on juvenile behaviours as predicted, with significant, albeit smaller,
effects found in adults. Maternal weight was heritable and itself subject to maternal effects.
Thus, maternal weight is a likely source of maternal genetic effects that are expected to alter
response to selection on personality in this system. More generally our study highlights that
while maternal effects can be an important source of personality variation, this varies over
ontogeny of offspring. | en_GB |
dc.identifier.citation | Published online 17 May 2018. | en_GB |
dc.identifier.doi | 10.1038/s41437-018-0082-1 | |
dc.identifier.uri | http://hdl.handle.net/10871/32586 | |
dc.language.iso | en | en_GB |
dc.publisher | Nature Publishing Group | en_GB |
dc.relation.url | https://doi.org/10.24378/exe.225 | en_GB |
dc.rights.embargoreason | Under embargo until 17 November 2018 in compliance with publisher policy. | en_GB |
dc.rights | © The Author(s) 2018. This article is published with open access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. | en_GB |
dc.subject | Animal personality | en_GB |
dc.subject | maternal effects | en_GB |
dc.subject | ontogeny | en_GB |
dc.subject | quantitative genetic analysis | en_GB |
dc.title | Evolutionary genetics of personality in the Trinidadian guppy I: Maternal and additive genetic effects across ontogeny (article) | en_GB |
dc.type | Article | en_GB |
dc.identifier.issn | 0018-067X | |
dc.description | This is the author accepted manuscript. The final version is available from the Nature Publishing Group via the DOI in this record. | en_GB |
dc.description | Accompanying data available at: https://doi.org/10.24378/exe.225 via the link in this record | en_GB |
dc.identifier.journal | Heredity | en_GB |