Fluctuating asymmetry: biological relevance or statistical noise?

Article Abstract:

Several statistical tests help in the testing of existence and significance of fluctuating asymmetry, which reflects random differences in right and left sides of a bilateral trait in small artificial data sets. Two-way ANOVA efficiently detects significant differences between the two columns of a data set. One-way ANOVA, t-test and other tests can be used to study the errors, type and pattern related to fluctuating asymmetry. Statistical steps for analysis of fluctuating asymmetry are presented.

Analysis, Reports, Symmetry, Error analysis (Mathematics), Statistics (Mathematics), Mathematical statistics

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Tibial coloration, fluctuating asymmetry and female choice behaviour in the damselfly Platycypha caligata

Article Abstract:

The anterior tibial whiteness of male damselflies, Platycypha caligata, was experimentally altered to determine the effects of the extent of whiteness and symmetry on the success of the males based the fighting rate with other males while territorial and the mating rate. Results reveal that neither extent of tibial whiteness nor symmetry of the whiteness affect the success of male damselflies in terms of mating and territoriality.

Sexual behavior, Research, Damselflies, Courtship of animals, Mating behavior

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Size and fluctuating asymmetry in sexually selected traits

Article Abstract:

It is possible to use a straightforward model to show that when the connection between the mean size of a bilaterally paired trait and mating success rises with increasing returns, sexual selection could also in theory favour raised fluctuating asymmetry regardless of developmental errors scaling with trait size.

Models, Sexual selection in animals, Sexual selection (Natural selection)

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