Katedra zoologie

Přírodovědecká fakulta Jihočeské univerzity

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Durham, UK: 3 PhD positions, mol ecol PDF Tisk Email
PhD opportunities in the Molecular Ecology Group in Durham, UK (see
https://www.dur.ac.uk/biosciences/ for information about the department
and University)
1) Evolution of habitat specialisation in the Arctic char
The evolution of multiple divergent phenotypes in postglacial lakes
has occurred repeatedly and independently in many fish taxa including
salmonids (e.g. Salmo, Oncorhynchus, & Salvelinus species), the
three-spined stickleback (Gasterosteus aculeatus), and smelt (Osmerus
species). In this study next generation sequencing methodologies will
be applied to understanding the evolution of char (Salvelinus alpinus)
ecotypes in British lakes, comparing multiple sympatric morphs in separate
lake systems.
2) The relative contribution of genetic drift and natural selection on
founder populations of deer
Population bottlenecks and founder events are an important part of
evolutionary process, generating stochastic variation among populations
and potentially changing evolutionary trajectories.  Natural selection
is a weak force compared to genetic drift when population size is very
small, yet strong selection could overcome this.  In this study founder
populations of reindeer (Rangifer tarandus) on South Georgia and roe
deer (Capreolus capreolus) in the UK will be investigated using next
generation sequencing methodologies to better understand the relative
importance of drift and selection following founder events.
3) Role of habitat boundaries in the evolution of population genetic
structure in marine systems
A long-standing objective in evolutionary biology is understanding
the mechanisms and drivers that determine the patterns and rate
of differentiation, and eventual speciation among populations.
Connectivity (the realized potential for gene flow among populations)
is key, but there are various interacting factors that determine the
spatial and temporal pattern of movement.  In this study the student
will take advantage of a well-studied system where there is suspected
to be an important interaction between prey choice and gene flow for
the bottlenose dolphin (Tursiops truncatus).  While based in Durham,
this project will be co-supervised by Oscar Gaggiotti in St. Andrews
and Per Berggren in Newcastle.
For further information please contact Rus Hoelzel
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The application deadline is 9 Jan 2015 for projects 1&2, and 2 Feb 2015
for project 3.  To apply please identify the project you are interested
in, send a cover letter explaining why you are a good fit to that project,
include your c.v. and university transcripts, and have at least 2 letters
of recommendation sent.  Project 2 is open to all nationalities, but
projects 1&3 are for UK nationals only.
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