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Adaptive versus non‐adaptive phenotypic plasticity and the potential for contemporary adaptation in new environments
Summary 1The role of phenotypic plasticity in evolution has historically been a contentious issue because of debate over whether plasticity shields genotypes from selection or generates novelExpand
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Costs of reproduction: an evaluation of the empirical evidence
Theoretical studies of life history evolution almost unanimously incorporate some form of tradeoff between life history variables, such as reduced parental survival due to increased reproductiveExpand
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Do faster starts increase the probability of evading predators
Summary 1 Nearly all fish evade predation strikes by rapidly accelerating out of the strike path, a behaviour called the fast-start evasion response. The many studies investigatingExpand
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Local adaptation in Trinidadian guppies alters ecosystem processes
Theory suggests evolutionary change can significantly influence and act in tandem with ecological forces via ecological-evolutionary feedbacks. This theory assumes that significant evolutionaryExpand
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Independent Origins and Rapid Evolution of the Placenta in the Fish Genus Poeciliopsis
The evolution of complex organs is a source of controversy because they require the contributions of many adaptations to function properly. We argue that placentas are complex, that they have evolvedExpand
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Ecology and Evolution of Swimming Performance in Fishes : Predicting Evolution with Biomechanics
Residing within the immense diversity of fishes on earth is an equally impressive array of locomotor abilities. Some fish continuously swim virtually their entire lives; some move primarily in briefExpand
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The relative influence of natural selection and geography on gene flow in guppies
Two general processes may influence gene flow among populations. One involves divergent selection, wherein the maladaptation of immigrants and hybrids impedes gene flow between ecologicalExpand
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Constraints on Adaptive Evolution: The Functional Trade‐Off between Reproduction and Fast‐Start Swimming Performance in the Trinidadian Guppy (Poecilia reticulata)
The empirical study of natural selection reveals that adaptations often involve trade‐offs between competing functions. Because natural selection acts on whole organisms rather than isolated traits,Expand
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Effect of extrinsic mortality on the evolution of senescence in guppies
Classical theories for the evolution of senescence predict that organisms that experience low mortality rates attributable to external factors, such as disease or predation, will evolve a later onsetExpand
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Non-adaptive plasticity potentiates rapid adaptive evolution of gene expression in nature
Phenotypic plasticity is the capacity for an individual genotype to produce different phenotypes in response to environmental variation. Most traits are plastic, but the degree to which plasticity isExpand
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