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010   $a3-662-54512-8
024 7 $a10.1007/978-3-662-54512-6
035   $a(CKB)3710000001388732
035   $a(DE-He213)978-3-662-54512-6
035   $a(MiAaPQ)EBC4866415
035   $a(PPN)201469057
035   $a(EXLCZ)993710000001388732
100   $a20170526d2017      u|         0
101 0 $aeng
135   $aurnn|008mamaa
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aEvolution in the Dark $eDarwin's Loss Without Selection /$fby Horst Wilkens, Ulrike Strecker
205   $a1st ed. 2017.
210  1$aBerlin, Heidelberg :$cSpringer Berlin Heidelberg :$cImprint: Springer,$d2017.
215   $a1 online resource (IX, 217 p. 107 illus., 59 illus. in color.) 
311   $a3-662-54510-1 
320   $aIncludes bibliographical references at the end of each chapters.
327   $aEvolution in the dark ? 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.
330   $aThis 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?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.
606   $aEvolutionary biology
606   $aAnimal genetics
606   $aDevelopmental biology
606   $aAnimal systematics
606   $aAnimal taxonomy
606   $aBiodiversity
606   $aEvolutionary Biology$3https://scigraph.springernature.com/ontologies/product-market-codes/L21001
606   $aAnimal Genetics and Genomics$3https://scigraph.springernature.com/ontologies/product-market-codes/L32030
606   $aDevelopmental Biology$3https://scigraph.springernature.com/ontologies/product-market-codes/L18000
606   $aAnimal Systematics/Taxonomy/Biogeography$3https://scigraph.springernature.com/ontologies/product-market-codes/L2504X
606   $aBiodiversity$3https://scigraph.springernature.com/ontologies/product-market-codes/L19031
615  0$aEvolutionary biology.
615  0$aAnimal genetics.
615  0$aDevelopmental biology.
615  0$aAnimal systematics.
615  0$aAnimal taxonomy.
615  0$aBiodiversity.
615 14$aEvolutionary Biology.
615 24$aAnimal Genetics and Genomics.
615 24$aDevelopmental Biology.
615 24$aAnimal Systematics/Taxonomy/Biogeography.
615 24$aBiodiversity.
676   $a576.8
700   $aWilkens$b Horst$4aut$4http://id.loc.gov/vocabulary/relators/aut$0979497
702   $aStrecker$b Ulrike$4aut$4http://id.loc.gov/vocabulary/relators/aut
906   $aBOOK
912   $a9910253916503321
996   $aEvolution in the Dark$92233510
997   $aUNINA