Fluctuating Environments and Clutch Size Evolution in Great Tits

1993 ◽  
Vol 141 (3) ◽  
pp. 507-516 ◽  
Author(s):  
Lily W. Liou ◽  
Trevor Price ◽  
Mark S. Boyce ◽  
Christopher M. Perrins
Keyword(s):  
Clutch Size ◽  
Size Evolution ◽  
Fluctuating Environments

Integrating theory of clutch size and body size evolution for parasitoids

Oikos ◽  
2001 ◽  
Vol 92 (2) ◽  
pp. 372-376 ◽  
Author(s):  
Peter J. Mayhew ◽  
Olivier Glaizot
Keyword(s):  
Body Size ◽  
Clutch Size ◽  
Size Evolution ◽  
Body Size Evolution

scholarly journals Evidence for r - and K -selection in a wild bird population: a reciprocal link between ecology and evolution

2016 ◽  
Vol 283 (1829) ◽  
pp. 20152411 ◽  
Author(s):  
Bernt-Erik Sæther ◽  
Marcel E. Visser ◽  
Vidar Grøtan ◽  
Steinar Engen
Keyword(s):  
Density Dependence ◽  
Population Size ◽  
Clutch Size ◽  
Balancing Selection ◽  
Empirical Support ◽  
Small Population ◽  
Environmental Stochasticity ◽  
Fluctuating Environments ◽  
Population Sizes ◽  
Large Clutch

Understanding the variation in selection pressure on key life-history traits is crucial in our rapidly changing world. Density is rarely considered as a selective agent. To study its importance, we partition phenotypic selection in fluctuating environments into components representing the population growth rate at low densities and the strength of density dependence, using a new stochastic modelling framework. We analysed the number of eggs laid per season in a small song-bird, the great tit, and found balancing selection favouring large clutch sizes at small population densities and smaller clutches in years with large populations. A significant interaction between clutch size and population size in the regression for the Malthusian fitness reveals that those females producing large clutch sizes at small population sizes also are those that show the strongest reduction in fitness when population size is increased. This provides empirical support for ongoing r - and K -selection in this population, favouring phenotypes with large growth rates r at small population sizes and phenotypes with high competitive skills when populations are close to the carrying capacity K . This selection causes long-term fluctuations around a stable mean clutch size caused by variation in population size, implying that r - and K -selection is an important mechanism influencing phenotypic evolution in fluctuating environments. This provides a general link between ecological dynamics and evolutionary processes, operating through a joint influence of density dependence and environmental stochasticity on fluctuations in population size.

scholarly journals A Model of Genome Size Evolution for Prokaryotes in Stable and Fluctuating Environments

2015 ◽  
Vol 7 (8) ◽  
pp. 2344-2351 ◽  
Author(s):  
Piotr Bentkowski ◽  
Cock Van Oosterhout ◽  
Thomas Mock
Keyword(s):  
Genome Size ◽  
Genome Size Evolution ◽  
Size Evolution ◽  
Fluctuating Environments

scholarly journals Incubation temperature as a constraint on clutch size evolution

2021 ◽  
Author(s):  
Sydney F. Hope ◽  
Sarah E. DuRant ◽  
John J. Hallagan ◽  
Michelle L. Beck ◽  
Robert A. Kennamer ◽  
...  
Keyword(s):  
Clutch Size ◽  
Incubation Temperature ◽  
Size Evolution

scholarly journals Competition and brood reduction: testing alternative models of clutch-size evolution in parasitoids

2008 ◽  
Vol 20 (2) ◽  
pp. 403-409 ◽  
Author(s):  
John J. Pexton ◽  
Jetske G. de Boer ◽  
George E. Heimpel ◽  
Louise E.M. Vet ◽  
James B. Whitfield ◽  
...  
Keyword(s):  
Clutch Size ◽  
Brood Reduction ◽  
Alternative Models ◽  
Size Evolution

scholarly journals Multitasking and the evolution of optimal clutch size in fluctuating environments

2018 ◽  
Vol 8 (17) ◽  
pp. 8803-8817 ◽  
Author(s):  
Ming Liu ◽  
Dustin R. Rubenstein ◽  
Siew-Ann Cheong ◽  
Sheng-Feng Shen
Keyword(s):  
Clutch Size ◽  
Fluctuating Environments ◽  
Optimal Clutch Size

Effects of parental survival on clutch size decisions in fluctuating environments

1998 ◽  
Vol 12 (4) ◽  
pp. 459-475 ◽  
Author(s):  
Patsy Haccou ◽  
John M. Mcnamara
Keyword(s):  
Clutch Size ◽  
Fluctuating Environments
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