Genetic constraints at the metamorphic boundary: Morphological development in the wood frog, Rana sylvatica
نویسندگان
چکیده
منابع مشابه
Genetic constraints at the metamorphic boundary: Morphological development in the wood frog, Rana sylvatica
Organisms with complex life-cycles often experience very different environments in different phases of their life. Genes expressed in more than one phase could potentially create a conflict or constraint on evolutionary change if the pattern of selection on those genes were different in the different phases. The potential importance of this type of constraint across metamorphosis in frogs was a...
متن کاملMicrogeographic countergradient variation in the wood frog, Rana sylvatica.
Prior studies have shown that macrogeographic gradients in temperature associated with latitude and altitude can lead to countergradient patterns of variation in a number of taxa: individuals from colder environments are known to grow or develop faster than their conspecifics from warmer environments when placed in a common setting. In this study, I hypothesized that countergradient variation a...
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Rising ultraviolet-B (UVB, 280-320 nm) radiation has been proposed as a factor which may explain nonnormal amphibian population declines. Accordingly research has been directed toward estimating the photolyase activity of several amphibian species in order to predict a species' resilience to UV damage. Unfortunately, in spite of published research which demonstrated that the activity of one of ...
متن کاملExpression and Characterization of the Novel Gene fr47 during Freezing in the Wood Frog, Rana sylvatica
The wood frog, Rana sylvatica, has numerous adaptations that allow it to survive freezing of up to 65% of its total body water during the winter. Such adaptations have been found to include the expression of novel freeze responsive genes that are thought to be important for adaptation and survival. In this study, the tissue-specific stress responsive expression of one novel gene, fr47, was asse...
متن کاملSeasonal Variation in the Hepatoproteome of the Dehydrationand Freeze-Tolerant Wood Frog, Rana sylvatica
Winter's advent invokes physiological adjustments that permit temperate ectotherms to cope with stresses such as food shortage, water deprivation, hypoxia, and hypothermia. We used liquid chromatography (LC) in combination with tandem mass spectrometry (MS/MS) quantitative isobaric (iTRAQ™) peptide mapping to assess variation in the abundance of hepatic proteins in summer- and winter-acclimatiz...
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ژورنال
عنوان ژورنال: Journal of Evolutionary Biology
سال: 1998
ISSN: 1010-061X,1420-9101
DOI: 10.1046/j.1420-9101.1998.11040453.x