publication . Doctoral thesis . 2017

Mitochondrial DNA hyperdiversity and population genetics in the periwinkle Melarhaphe neritoides (Mollusca: Gastropoda)

Fourdrilis, Severine;
Open Access English
  • Published: 28 Jun 2017
  • Publisher: Universite Libre de Bruxelles
  • Country: Belgium
Abstract
This PhD thesis studies the evolution of the peculiar mitochondrial DNA (mtDNA) in the mollusc Melarhaphe neritoides. We measured mtDNA diversity and elucidated the evolutionary forces that shape the evolution of the organelle.The mtDNA in M. neritoides harbours a remarkable amount of polymorphism at selectively neutral nucleotide sites (π_syn = 6.8 %), called hyperdiversity when above the threshold of 5 %. We revealed that an elevated mutation rate (µ = 5.8 × 10-5 per site per year at the COI locus), which is 1000 fold higher than in other metazoans, is likely the primary force generating mtDNA hyperdiversity. Such mtDNA hyperdiversity may be more common across...
Subjects
free text keywords: Sciences exactes et naturelles, Population genetics, Phylogenetics, Gene flow, Population genetic differentiation, North East Atlantic, Marine snail
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Doctoral thesis . 2017
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