A comparative analysis of clinging ability among pad‐bearing lizards
The results indicate that although pad area is a strong determinant of clinging ability, other factors enable these lizards to maintain functional similarity, and despite the tight correlation between pad area and clingingAbility, pad area scales with body mass by a lower slope than clinging ability.
How does selection operate on whole-organism functional performance capacities? A review and synthesis
This review of existing literature on the nature and intensity of natural and sexual selection on whole-organism performance traits found no evidence that selection was stronger on performance traits than morphological traits.
A COMPARATIVE ANALYSIS OF THE ECOLOGICAL SIGNIFICANCE OF MAXIMAL LOCOMOTOR PERFORMANCE IN CARIBBEAN ANOLIS LIZARDS
- D. Irschick, J. Losos
- Environmental ScienceEvolution; international journal of organic…
- 1 February 1998
Among species, maximal speed is tightly positively correlated with sprinting performance during both feeding and escape in the field and a negative relationship exists among species between maximal speed and the proportion to which species sprint to their maximal abilities during field escape.
Do Lizards Avoid Habitats in Which Performance Is Submaximal? The Relationship between Sprinting Capabilities and Structural Habitat Use in Caribbean Anoles
Both hypotheses were confirmed: species with high values of sprint sensitivity avoided using perches on which their maximal sprinting abilities are impaired, whereas species with low sprint sensitivity used such “submaximal” surfaces more frequently.
Integrating function and ecology in studies of adaptation: Investigations of locomotor capacity as a model system
It is argued that for the study of adaptation to proceed, greater integration of laboratory studies of performance and behavioral/ecological studies is needed, and this approach is illustrated by examining two questions: how does the environment affect locomotor function in nature and what percentage of locomotor capacities do animals use in nature.
PLEIOTROPIC EFFECTS OF INDIVIDUAL GENE LOCI ON MANDIBULAR MORPHOLOGY
- J. Cheverud, E. Routman, D. Irschick
- BiologyEvolution; international journal of organic…
- 1 December 1997
The genotypic basis of morphological variation is largely unknown. In this study we examine patterns of pleiotropic effects on mandibular morphology at individual gene loci to determine whether the…
Rapid large-scale evolutionary divergence in morphology and performance associated with exploitation of a different dietary resource
- A. Herrel, K. Huyghe, D. Irschick
- Environmental ScienceProceedings of the National Academy of Sciences
- 25 March 2008
How lizards have rapidly evolved differences in head morphology, bite strength, and digestive tract structure after experimental introduction into a novel environment is shown, providing a compelling example of how the invasion of a novel habitat can evolutionarily drive multiple aspects of the phenotype.
The effect of perch diameter on escape behaviour of Anolis lizards : laboratory predictions and field tests
It was predicted that species in which running ability declines greatly as diameter decreases should switch to escape by jumping more often than species that experience less of a decline in running ability, but this prediction was not confirmed.
Performance capacity, fighting tactics and the evolution of life–stage male morphs in the green anole lizard (Anolis carolinensis)
- S. Lailvaux, A. Herrel, B. Vanhooydonck, J. Meyers, D. Irschick
- BiologyProceedings of the Royal Society of London…
- 7 December 2004
It is proposed that the heavyweight morph arose through selection against males with small heads and poor bite forces at the lightweight–heavyweight size transition, implying that one may not be able to predict male fighting success by examining aspects of male ‘quality’ at only one life stage.
Measuring Performance in Nature: Implications for Studies of Fitness Within Populations1
- D. Irschick
- Environmental ScienceIntegrative and Comparative Biology
- 1 July 2003
How studies of ecological performance, or how organisms perform in nature, provide an ecological context for selection studies is discussed, and the traditional paradigm of morphology → performance → fitness to morphology → ecological performance → Fitness is expanded.