Population structure and genetic diversity in the nannandrous moss Homalothecium lutescens: does the dwarf male system facilitate gene flow?
Rosengren, Frida; Hansson, Bengt; Cronberg, Nils (2015). Population structure and genetic diversity in the nannandrous moss Homalothecium lutescens: does the dwarf male system facilitate gene flow?. BMC Evolutionary Biology, 15,
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Published
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English
Authors:
Rosengren, Frida
;
Hansson, Bengt
;
Cronberg, Nils
Department:
Biodiversity
MEMEG
Molecular Ecology and Evolution Lab
BECC: Biodiversity and Ecosystem services in a Changing Climate
Project:
Genetic variation and sexual reproduction in a moss with dwarf males, Homalothecium lutescens
Fertilization syndromes in bryophytes
Research Group:
Molecular Ecology and Evolution Lab
Abstract:
Nannandry is a sexual system where males ("dwarf males") are much smaller than the conspecific females. Dwarf males occur in a wide range of unrelated organisms but the evolutionary advantages of this condition are poorly understood. The dwarf male sexual system results in differences in the mode of dispersal and establishment as well as the life span between males and females. Such differences must have profound effects on the population dynamics and genetic structures. We have studied four populations of the nannandrous moss Homalothecium lutescens in southern Sweden. We genotyped dwarf males and female shoots with the aim of describing the genetic diversity and structure of the populations.
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