scholarly journals Life-history evolution under fluctuating density-dependent selection and the adaptive alignment of pace-of-life syndromes

2018 ◽  
Vol 94 (1) ◽  
pp. 230-247 ◽  
Author(s):  
Jonathan Wright ◽  
Geir H. Bolstad ◽  
Yimen G. Araya-Ajoy ◽  
Niels J. Dingemanse
Keyword(s):  
Life History ◽  
Life History Evolution ◽  
Density Dependent ◽  
Pace Of Life ◽  
History Evolution ◽  
Density Dependent Selection

scholarly journals Roles of density-dependent growth and life history evolution in accounting for fisheries-induced trait changes

2016 ◽  
Vol 113 (52) ◽  
pp. 15030-15035 ◽  
Author(s):  
Anne Maria Eikeset ◽  
Erin S. Dunlop ◽  
Mikko Heino ◽  
Geir Storvik ◽  
Nils C. Stenseth ◽  
...  
Keyword(s):  
Life History ◽  
Density Dependence ◽  
Time Series Data ◽  
Life History Evolution ◽  
Series Data ◽  
Ecological Processes ◽  
Arctic Cod ◽  
Density Dependent ◽  
History Evolution ◽  
Dependent Growth

The relative roles of density dependence and life history evolution in contributing to rapid fisheries-induced trait changes remain debated. In the 1930s, northeast Arctic cod (Gadus morhua), currently the world’s largest cod stock, experienced a shift from a traditional spawning-ground fishery to an industrial trawl fishery with elevated exploitation in the stock’s feeding grounds. Since then, age and length at maturation have declined dramatically, a trend paralleled in other exploited stocks worldwide. These trends can be explained by demographic truncation of the population’s age structure, phenotypic plasticity in maturation arising through density-dependent growth, fisheries-induced evolution favoring faster-growing or earlier-maturing fish, or a combination of these processes. Here, we use a multitrait eco-evolutionary model to assess the capacity of these processes to reproduce 74 y of historical data on age and length at maturation in northeast Arctic cod, while mimicking the stock’s historical harvesting regime. Our results show that model predictions critically depend on the assumed density dependence of growth: when this is weak, life history evolution might be necessary to prevent stock collapse, whereas when a stronger density dependence estimated from recent data is used, the role of evolution in explaining fisheries-induced trait changes is diminished. Our integrative analysis of density-dependent growth, multitrait evolution, and stock-specific time series data underscores the importance of jointly considering evolutionary and ecological processes, enabling a more comprehensive perspective on empirically observed stock dynamics than previous studies could provide.

scholarly journals A review of urban impacts on avian life-history evolution: Does city living lead to slower pace of life?

2017 ◽  
Vol 24 (4) ◽  
pp. 1452-1469 ◽  
Author(s):  
Tuul Sepp ◽  
Kevin J. McGraw ◽  
Ants Kaasik ◽  
Mathieu Giraudeau
Keyword(s):  
Life History ◽  
Life History Evolution ◽  
Urban Impacts ◽  
Pace Of Life ◽  
History Evolution
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