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• W2139255846 abstract "Several studies of fluctuating asymmetry (FA) in animals show that secondary sexual characters used in signalling have a negative relationship between size and asymmetry. Larger sexual traits are presumably more costly to produce, which should lead to greater developmental stress and corresponding increases in asymmetry. In the absence of among individual variation in the ability to handle these costs, the relationship between size and asymmetry should thus be positive. A negative relationship therefore suggests that expression of these traits is condition-dependent. In plants, flowers act as signals for pollinators and may show similar trends to animal signals. Leaves which are uninvolved in signalling should not. Moller & Eriksson (1994) found that 89% of species (n= 16 of 18) with insect-pollinated flowers showed a negative relationship between petal size and asymmetry, while 79% of species (n= 15 of 19) showed a positive relationship between leaf size and asymmetry. I carried out a similar study of 18 plant species. The average relationship between petal size and asymmetry did not differ significantly from zero in those species showing measurable FA in flowers (n= 12). The relationship was significantly negative in one species, and significandy positive in another. On average, leaves in species with FA did not show a significant positive relationship between size and asymmetry (n= 7). There was no significant difference in the slopes of the relationship between size and asymmetry for leaves and flowers. Levels of floral asymmetry for species with FA were significandy repeatable on individual plants in 33% (n= 4 of 12) of species, but leaf asymmetry was not significantly repeatable in any species. It is argued that condition-dependence of traits need not result in a negative relationship between size and asymmetry." @default.
• W2139255846 created "2016-06-24" @default.
• W2139255846 creator A5080859173 @default.
• W2139255846 date "1996-10-01" @default.
• W2139255846 modified "2023-10-07" @default.
• W2139255846 title "The allometry of fluctuating asymmetry in southern African plants: flowers and leaves" @default.
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• W2139255846 doi "https://doi.org/10.1111/j.1095-8312.1996.tb01458.x" @default.
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