Abstract
There have been
numerous studies
in
which
the
reproductive
cycles of
teleosts have been
correlated with either environmental
cycles or associated physiological cycles, or
both. Such
correlation
is
seldom accurately achieved; usually
because the
reproductive cycle
of
the
species concerned
is lax,
sometimes
because
only one or
two
factors
of an
integrated
whole were examined.
The
powan of
Loch Lomond, Coregonus lavaretus
(L. ) (Teleostei,
Salmoniformes) is the
subject of a
long-term
study
investigating its
growth,
in particular reproduction.
This
race
is
a
freshwater
glacial
relict
form
of a
boreal
group, and
thus has
an exceptionally strictly
times
reproductive cycle.
It thus
represents an
ideal
subject for
cyclical studies.
This thesis investigates the
relationship between
lipid
storage
and
the
reproductive cycle and
the
role of
thyroid
gland.
Type
Thesis, PhD Doctor of Philosophy
Rights
Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported
http://creativecommons.org/licenses/by-nc-nd/3.0/