Fluctuating Asymmetry in Crayfish Populations Inhabiting
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Growth and Asymmetry of Soil Microfungal Colonies from “Evolution Canyon,” Lower Nahal Oren, Mount Carmel, Israel
BACKGROUND Fluctuating asymmetry is a contentious indicator of stress in populations of animals and plants. Nevertheless, it is a measure of developmental noise, typically obtained by measuring asymmetry across an individual organism's left-right axis of symmetry. These individual, signed asymmetries are symmetrically distributed around a mean of zero. Fluctuating asymmetry, however, has rarely...
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Fluctuating asymmetry, the random deviation from perfect symmetry, is a widely used population-level index of developmental instability, developmental noise, and robustness. It reflects a population’s state of adaptation and genomic coadaptation. Here, we review the literature on fluctuating asymmetry of human populations. The most widely used bilateral traits include skeletal, dental, and faci...
متن کاملFluctuating Asymmetry: Methods, Theory, and Applications
Fluctuating asymmetry consists of random deviations from perfect symmetry in populations of organisms. It is a measure of developmental noise, which reflects a population’s average state of adaptation and coadaptation. Moreover, it increases under both environmental and genetic stress, though responses are often inconsistent. Researchers base studies of fluctuating asymmetry upon deviations fro...
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The past decade has seen a resurgence of interest in developmental instability, reflected in fluctuating asymmetry, as a concept in evolutionary ecology. Many investigations interpret fluctuating asymmetry in populations or subsets of populations as reflecting the existence of, or at least the potential for, natural or sexual selection. However, the biological and nonbiological factors under l...
متن کاملYear Cycle and Morphometrical Characteristics of Austropotamobius Torrentium from Two Karstic Rivers in Croatia
Stone crayfish (Austropotamobius torrentium) is one of the four native European crayfish species inhabiting Croatian freshwaters and is protected by Croatian law. The aim of this work was to investigate several aspects of species life cycle, morphometrics and habitat preferences. Populations were studied for 18 months in two streams in the Karlovac County. Crayfish were trapped once a month. Al...
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تاریخ انتشار 2011