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Subject: PhD on brown trout/sea trout!
From: Kathleen Beyer <[log in to unmask]>
Reply-To:Scientific forum on fish and fisheries <[log in to unmask]>
Date:Mon, 7 Feb 2005 15:07:27 +0000

text/plain (56 lines)

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Do you know a good, self-motivated and organised student who is
interested in taking a PhD?

How does parental contribution affect offspring performance in a brown
trout/sea trout population?

Project Description:
Theoretically, animals should follow the life-history strategy that
results in the greatest fitness (defined as the strategy that leaves the
greatest number of descendants). However, in most rivers brown trout,
and other salmonid fish, display considerable phenotypic plasticity and
variability in life-history characters ranging from forms that spend
their whole life in one small stream (brown trout) to those that migrate
to the sea (sea trout) and spend a variable amount of time away from
their home streams before returning to spawn there.

Objectives and hypotheses of the PhD

* To determine the contribution of each parent and parental type to
future generations, testing the separate hypotheses for males and
females that reproductive success is linearly related to body size.

* To determine the effect of male and female parentage on offspring
body size, growth, survival, behaviour and life history strategies to
test a number of hypotheses on measurable fitness benefits of each
life-history strategies.

The attachment contains a, a background and outline of the PhD, which
has also been advertised through  The project
supervisor wil be Dr A Ibbotson, based at CEH Dorset with University
Supervisor: Dr J.R. Stevens from the University of Exeter, Dept of
Biological Sciences.

The Application deadline is 18th March 2005, and should be by means of
a CV and covering letter to Dr. Ibbotson.

Dr A Ibbotson
[log in to unmask]
Centre for Ecology and Hydrology
Winfrith Technology Centre,
Winfrith Newburgh,
DT2 8ZD UKTelephone: +44 (0)1305 213500
Fax: +44 (0)1305 213600

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