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Island lizards - Coggle Diagram
Island lizards
Information
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No studies have been done on morphology, performance, and habitat use interacting together to affect fitness.
There are gaps in how natural selection is understood, and selection does not rely on single traits working alone.
Want to measure natural selection on locomotor performance, morphology, and habitat use together as a whole.
Results
Morphology and performance together showed sprint speed was negatively correlated with hind limb length in males. The endurance was positively correlated with hind limb length and negatively correlated with sprint speed. The male lizards have high endurance with long hind limbs and lizards with short hind limbs had low endurance.
Morphology and performance and survival showed positively correlated results in male lizards. The sprint speed is positive when placed with other traits and not alone.
Habitat use and performance and survival showed that performance was positively correlated with the lizards type of habitat.
Natural selection on locomotor performance, morphology, and habitat use together showed positive results. The positive results appeared in males because of variations in limb length from natural selection.
Discussion
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Natural selection is being seen when performance is placed with morphology and as well with habitat use. This is backed up with information that when recaptured to observe data, the lizards were all still alive.
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Methods
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Measured hind limb length and sprint speed for locomotor performance and perch diameter for habitat use.
Readers Questions
Most work on lizards have focused on males, maybe they can do one with females on natural selection and compare the data between the two?
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Literature cited
Calsbeek R, Irschick DJ. The quick and the dead: Correlational selection on morphology, performance, and habitat use in island lizards. Evolution. 2007;61(11):2493–2503. doi:10.1111/j.1558-5646.2007.00206.x
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