Overwintering performance of three juvenile temperate estuarine fishes
Journal of Experimental Marine Biology and Ecology,
Journal Year:
2025,
Volume and Issue:
584, P. 152087 - 152087
Published: Feb. 14, 2025
Language: Английский
How genomic and environmental relationships shape phenotypic plasticity in brook charr Salvelinus fontinalis: an historical review
Frontiers in Fish Science,
Journal Year:
2025,
Volume and Issue:
3
Published: Feb. 19, 2025
This
review
revisits
20
years
of
collaborative
studies
that
were
pursued
with
Louis
Bernatchez
who
sadly
passed
away
in
October
2023.
With
him,
we
explored
the
phenotypic
plasticity
brook
charr
by
combining
ecophysiology,
genetics,
genomics,
and
more
recently
epigenetics.
Over
years,
conducted
extensive
on
charr,
focusing
metabolism,
stress
response,
growth
regulation,
temperature
tolerance
across
various
strains.
Our
research
highlighted
remarkable
diversity
physiological
responses
to
salinity
conditions,
along
significant
differences
heritability
key
traits
different
strains
life
stages.
We
studied
stages
from
yolk-sac
fry
reproductive
adults,
compared
freshwater
residents
anadromous
fish,
showed
how
epigenetics
affects
transcriptomic
progeny
conditions.
highlights
incredible
presents
future
avenues
will
lead
a
better
understanding
species
may
face
challenges
related
global
changes.
Language: Английский
How quickly do brook trout lose long-term thermal acclimation?
Journal of Thermal Biology,
Journal Year:
2025,
Volume and Issue:
unknown, P. 104103 - 104103
Published: March 1, 2025
Language: Английский
Consistent seasonal flexibility of the gut and its regions across wild populations of a winter-quiescent fish
Royal Society Open Science,
Journal Year:
2024,
Volume and Issue:
11(3)
Published: March 1, 2024
Seasonality
in
north-temperate
environments
imposes
drastic
temperature
and
resource
variations
that
shape
the
seasonal
ecophysiology
of
resident
organisms.
A
better
understanding
an
organism’s
capacity
to
flexibly
respond
this
variation
may
reveal
important
mechanisms
for
tolerating
or
responding
environmental
introduced
by
global
change.
In
fishes,
digestive
system
is
both
interface
between
energy
acquisition
one
most
expensive
organ
systems
maintain.
However,
little
evidence
describing
flexibility
tract
wild
northern
fishes
exists.
Here,
we
investigated
phenotypic
size
gastrointestinal
(GI)
across
three
populations
a
winter-dormant
warm-water
fish,
pumpkinseed
sunfish
(
Lepomis
gibbosus
).
all
populations,
exhibited
pronounced
structural
GI
tract,
aligned
with
winter
timing
reproduction.
The
dry
mass
increased
1.3-
nearly
2.5-fold
early
spring.
pyloric
caeca
demonstrated
greatest
flexibility,
increasing
up
3.7-fold
prior
minimum
was
consistently
achieved
during
mid-summer.
This
gut
represent
novel
mechanism
facilitating
rapid
adaptive
responses
(e.g.
metabolic
plasticity)
future
Language: Английский
Expanding the scope: integrating costs of digestive metabolism and growth into estimates of maximum oxygen uptake in fishes
Journal of Experimental Biology,
Journal Year:
2024,
Volume and Issue:
227(14)
Published: July 15, 2024
Language: Английский
Is the diel cycle of routine metabolic rate in mummichog (Fundulus heteroclitus) affected by near‐infrared lighting used for visualizing behavior of fishes at night?
Journal of Fish Biology,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Sept. 15, 2024
Abstract
The
metabolic
rate
of
a
freely
moving
fish
(routine
rate)
is
tightly
coupled
with
volitional
movement
(spontaneous
activity),
both
which
commonly
show
strong
daily
cycles
linked
to
the
species‐specific
diel
activity
pattern.
Mummichog
(
Fundulus
heteroclitus
),
an
important
estuarine
in
north
western
Atlantic
Ocean,
are
historically
reported
as
diurnal
(i.e.,
more
active
during
daylight).
Our
recent
laboratory
studies
on
Bay
Fundy
population,
however,
showed
free‐running
similarly
daytime
and
night‐time)
or
even
nocturnal
at
In
laboratory,
near‐infrared
(NIR)
illumination
used
NIR‐sensitive
camera
visualize
across
light–dark
periods
day.
Because
NIR
light
close
visible
spectrum
certain
fishes
sensitivity
NIR,
use
mummichog
possibly
could
disturb
animals
obscure
identification
their
true
We
aimed
determine
if
(940
nm
wavelength)
influences
pattern
mummichog.
measurements
routine
(oxygen
consumption
rate,
MO
2
)
proxy
for
activity,
evaluating
effect
requires
treatments
where
lights
off,
precludes
visualization
direct
assessment
night‐time.
measured
mummichogs
over
6
days,
exposed
either
off–on–off
(2
days
each
off
period)
opposite
sequence
on–off–on
(to
control
time‐dependent
effects).
did
not
influence
cycle
,
by
proxy,
Thus,
suitable
method
cycles.
Routine
presumably
was
similar
higher
night‐time
compared
periods,
confirming
least
populations
Language: Английский