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The Resource Evolution in the Dark : Darwin's Loss Without Selection, by Horst Wilkens, Ulrike Strecker, (electronic resource)

Evolution in the Dark : Darwin's Loss Without Selection, by Horst Wilkens, Ulrike Strecker, (electronic resource)

Label
Evolution in the Dark : Darwin's Loss Without Selection
Title
Evolution in the Dark
Title remainder
Darwin's Loss Without Selection
Statement of responsibility
by Horst Wilkens, Ulrike Strecker
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Contributor
Author
Subject
Language
eng
Summary
This book provides fascinating insights into the development and genetics of evolutionary processes on the basis of animals living in the dark, such as the Astyanax cave fish. Biologically functionless traits show high variability, which results from neutral deleterious mutations no longer being eliminated by natural selection, which normally acts to preserve functional capability. These negative mutations accumulate until the traits they are responsible for become rudimentary or even lost. The random genetic basis of regressive evolution is in accordance with Nei{u2019}s Neutral Theory of Molecular Evolution, which applies to the molecular level. Such processes are particularly conspicuous in species living in constant darkness, where, for example in Astyanax, all traits depending on the exposure to light, like eyes, pigmentation, visually triggered aggressive behaviour, negative phototaxis, and several peripheral outcomes of circadian rhythmicity, are useless and diminish. In compensation constructive traits like taste, olfaction or the lateral line senses are improved by selection and do not show variability. Regressive and constructive traits inherit independently, proving that the rudimentation process is not driven by pleiotropic linkage between them. All these traits are subject to mosaic evolution and exhibit unproportional epistatic gene effects, which play an important role in evolutionary adaptation and improvement. Offering valuable evolutionary insights and supplemented by a wealth of illustrations, this book will appeal to evolutionary and developmental biologists alike
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0
Literary form
non fiction
Evolution in the Dark : Darwin's Loss Without Selection, by Horst Wilkens, Ulrike Strecker, (electronic resource)
Label
Evolution in the Dark : Darwin's Loss Without Selection, by Horst Wilkens, Ulrike Strecker, (electronic resource)
Link
http://libproxy.rpi.edu/login?url=http://dx.doi.org/10.1007/978-3-662-54512-6
Publication
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Antecedent source
mixed
Carrier category
online resource
Carrier category code
cr
Carrier MARC source
rdacarrier
Color
not applicable
Content category
text
Content type code
txt
Content type MARC source
rdacontent
Contents
Evolution in the dark {u2013} introduction -- The role of rudimentation in evolution -- Diversity and phylogenetic age of cave species -- Surface and cave populations of Mexican Astyanax -- Complexity of interrelationship of cave and surface fish -- Regressive and constructive traits in Astyanax surface and cave fish -- Mechanisms of regressive evolution
http://library.link/vocab/cover_art
https://contentcafe2.btol.com/ContentCafe/Jacket.aspx?Return=1&Type=S&Value=9783662545126&userID=ebsco-test&password=ebsco-test
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unknown
http://library.link/vocab/discovery_link
{'f': 'http://opac.lib.rpi.edu/record=b4258245'}
Extent
IX, 217 p. 107 illus., 59 illus. in color.
File format
multiple file formats
Form of item
electronic
Isbn
9783662545126
Level of compression
uncompressed
Media category
computer
Media MARC source
rdamedia
Media type code
c
Other physical details
online resource.
Quality assurance targets
absent
Reformatting quality
access
Specific material designation
remote

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