Life-history differences in age-dependent expressions of multiple ornaments and behaviors in a lekking bird
Kervinen, M., Lebigre, C., Alatalo, R. V., Siitari, H., & Soulsbury, C. D. (2015). Life-history differences in age-dependent expressions of multiple ornaments and behaviors in a lekking bird. American Naturalist, 185(1), 13-27. https://doi.org/10.1086/679012
Published inAmerican Naturalist
© 2014 by The University of Chicago. Published in this repository with the kind permission of the publisher.
Age is a major factor explaining variation in life-history traits among individuals with typical patterns of increasing trait values early in life, maximum trait expression, and senescence. However, age-dependent variation in the expressions of sexually selected traits has received less attention, although such variation underpins differences in male competitive abilities and female preference, which are central to sexual selection. In contrast to previous studies focusing on single traits, we used repeated measures of seven sexually selected morphological and behavioral traits in male black grouse (Tetrao tetrix) to quantify the effects of age and life span on their expressions and quantified this variation in relation to male reproductive effort. Trait expression increased with age, but long-lived males had a slower increase and delayed maxima in trait values compared with shortlived males. There was evidence of terminal investment (increasing trait values during the last breeding season) in some traits and senescence in all traits. These trait dynamics were largely explained by the timing of male peak lekking effort. This study shows that fully understanding the variation in sexually selected traits and fitness benefits associated with sexual selection requires accounting for the complex interaction among individual age, life span, and the timing of individuals’ investment in reproduction. ...
PublisherUniversity of Chicago Press; American Society of Naturalists
Publication in research information system
MetadataShow full item record
Showing items with similar title or keywords.
Simultaneous age-dependent and age-independent sexual selection in the lekking black grouse (Lyrurus tetrix) Kervinen, Matti; Lebigre, Christophe; Soulsbury, Carl D. (Wiley-Blackwell Publishing Ltd.; British Ecological Society, 2016)Individuals' reproductive success is often strongly associated with their age, with typical patterns of early‐life reproductive improvement and late‐life senescence. These age‐related patterns are due to the inherent ...
Age is not just a number : Mathematical model suggests senescence affects how fish populations respond to different fishing regimes Ahti, Pauliina A.; Uusi‐Heikkilä, Silva; Marjomäki, Timo J.; Kuparinen, Anna (John Wiley & Sons, 2021)Senescence is often described as an age-dependent increase in natural mortality (known as actuarial senescence) and an age-dependent decrease in fecundity (known as reproductive senescence), and its role in nature is still ...
Evolutionary constraints of warning signals : a genetic trade-off between the efficacy of larval and adult warning coloration can maintain variation in signal expression Lindstedt, Carita; Schroderus, Eero; Lindström, Leena; Mappes, Tapio; Mappes, Johanna (Wiley-Blackwell Publishing Ltd.; Society for the Study of Evolution, 2016)To predict evolutionary responses of warning signals under selection, we need to determine the inheritance pattern of the signals, and how they are genetically correlated with other traits contributing to fitness. Furthermore, ...
Mappes, Tapio; Koivula, Minna; Koskela, Esa; Oksanen, Tuula A.; Savolainen, Tiina; Sinervo, Barry (Public Library of Science, 2008)Negative frequency-dependence, which favors rare genotypes, promotes the maintenance of genetic variability and is of interest as a potential explanation for genetic differentiation. Density-dependent selection may also ...
Comparison of migratory and resident populations of brown trout reveals candidate genes for migration tendency Lemopoulos, Alexandre; Uusi-Heikkilä, Silva; Huusko, Ari; Vasemägi, Anti; Vainikka, Anssi (Oxford University Press; Society for Molecular Biology and Evolution, 2018)Candidate genes associated with migration have been identified in multiple taxa: including salmonids, many of whom perform migrations requiring a series of physiological changes associated with the freshwater–saltwater ...