Fish reproduction in a warming world: vulnerable points in hormone regulation from sex determination to spawning
Philosophical Transactions of the Royal Society B Biological Sciences,
Journal Year:
2024,
Volume and Issue:
379(1898)
Published: Feb. 5, 2024
Reproduction
in
fishes
is
sensitive
to
temperature.
Elevated
temperatures
and
anomalous
‘heat
waves’
associated
with
climate
change
have
the
potential
impact
fish
reproductive
performance
and,
some
cases,
even
induce
sex
reversals.
Here
we
examine
how
thermal
sensitivity
hormone
pathways
regulating
reproduction
provides
a
framework
for
understanding
impacts
of
warmer
conditions
on
reproduction.
Such
effects
will
differ
depending
evolved
variation
temperature
endocrine
processes
determination/differentiation,
gametogenesis
spawning,
as
well
developmental
timing
those
varies
ecology.
For
populations
unable
shift
geographical
range,
persistence
under
future
climates
may
require
changes
responsiveness
processes.
How
among
species,
generate
maxima
reproduction,
rapidly
tolerances
can
via
adaptation
or
transgenerational
plasticity
shape
which
are
most
at
risk
impaired
rising
temperatures.
This
article
part
theme
issue
‘Endocrine
responses
environmental
variation:
conceptual
approaches
recent
developments’.
Language: Английский
Climate Change and Reproductive Biocomplexity in Fishes: Innovative Management Approaches towards Sustainability of Fisheries and Aquaculture
Water,
Journal Year:
2023,
Volume and Issue:
15(4), P. 725 - 725
Published: Feb. 12, 2023
The
ongoing
rapid
climate
change,
combined
with
the
disturbance
of
fish
breeding
grounds,
may
impact
reproduction
by
endangering
successful
and
survival,
thus
affect
viable
sustainability
in
aquaculture
systems
as
well
sea.
In
this
study
we
focus
on
biocomplexity
response
to
change.
Further,
propose
adaptive
strategies,
including
technological
advancements,
using
a
noninvasive
non-lethal
approach,
outline
an
assisted
nutrigenomics
approach
mitigating
reproductive
risks
posed
This
was
done
effort
monitor
ensure
that,
livelihood,
it
provide
useful
source
nutrition
for
our
society.
Language: Английский
Divergent perspectives on the synergistic impacts of thermal-chemical stress on aquatic biota within the framework of climate change scenarios
Chemosphere,
Journal Year:
2024,
Volume and Issue:
355, P. 141810 - 141810
Published: March 28, 2024
Language: Английский
Temperature modulates 17β-estradiol regulation of oogenesis protein expression in the liver of the eurythermal pupfish Cyprinodon nevadensis
Sean C. Lema,
No information about this author
Kseniya A Krayeva,
No information about this author
Zoey A Dale
No information about this author
et al.
General and Comparative Endocrinology,
Journal Year:
2025,
Volume and Issue:
unknown, P. 114707 - 114707
Published: March 1, 2025
Female
fish
experiencing
atypically
high
or
prolonged
elevations
in
temperature
during
oogenesis
can
suffer
impaired
oocyte
development
with
fewer
smaller
eggs,
eggs
reduced
yolk
content
thinner
envelopes,
and
lower
egg
viability.
These
changes
quality
quantity
are
part
caused
by
diminished
liver
synthesis
of
(vitellogenin,
Vtg)
envelope
(choriogenin)
proteins
at
anomalously
temperatures.
Those
declines
Vtg
choriogenin
production
commonly
paralleled
blood
concentrations
17β-estradiol
(E2).
However,
it
is
unclear
whether
vitellogenin
elevated
temperatures
result
solely
from
circulating
E2
if
other
aspects
signaling
also
altered
to
diminish
proteins.
In
this
study,
adult
female
Amargosa
River
pupfish
(Cyprinodon
nevadensis
amargosae),
a
species
asynchronous
follicular
development,
were
maintained
20
°C,
28
36
°C
then
administered
vehicle
solution.
Ovarian
gonadosomatic
index
(GSI)
values
plasma
females
compared
those
cooler
Females
had
protein,
abundances
for
mRNAs
encoding
genes
(vtgAa,
vtgAb,
vtgc),
(cgh,
cghm,
cgl),
estrogen
receptor
α
(esr1).
Supplemental
increased
all
temperatures,
but
only
upregulated
despite
upregulation
hepatic
esr1
transcripts
exhibited
higher
mRNA
sex
hormone-binding
globulin
(shbg)
cytochrome
P450
family
1
subfamily
A
member
(cyp1a1),
an
estrogen-metabolizing
monooxygenase
enzyme
that
converts
2-hydroxyestradiol.
Together,
these
findings
indicate
stimulation
expression
via
effects
on
several
including
as
well
shbg
cyp1a1
expression,
which
may
free:bound
the
rate
inactivation.
results
demonstrate
replacement
help
compensate
temperature-induced
gene
pupfish.
Language: Английский
Fluctuating and Stable High Temperatures Differentially Affect Reproductive Endocrinology of Female Pupfish
Integrative Organismal Biology,
Journal Year:
2024,
Volume and Issue:
6(1)
Published: Jan. 1, 2024
Synopsis
For
many
fishes,
reproductive
function
is
thermally
constrained
such
that
exposure
to
temperatures
above
some
upper
threshold
has
detrimental
effects
on
gametic
development
and
maturation,
spawning
frequency,
mating
behavior.
Such
impairment
of
performance
at
elevated
involves
changes
hypothalamic–pituitary–gonadal
(HPG)
axis
signaling
diminished
gonadal
steroidogenesis.
However,
how
HPG
pathways
respond
consistently
high
versus
temporally
not
clear.
Here,
sexually
mature
Amargosa
River
Pupfish
(Cyprinodon
nevadensis
amargosae)
were
maintained
under
thermal
regimes
either
stable
∼25°C
(low
temperature),
diurnal
cycling
between
∼27
35°C
(fluctuating
or
∼35°C
(high
temperature)
conditions
for
50
days
examine
these
endocrine
components
in
the
pituitary
gland
gonad,
ovarian
testicular
gametogenesis
status,
liver
gene
expression
relating
oogenesis.
Female
pupfish
fluctuating
temperature
treatments
showed
reduced
gonadosomatic
index
values
as
well
a
lower
proportion
oocytes
lipid
droplet
vitellogenic
stages.
Females
both
exhibited
mRNAs
steroid
acute
regulatory
protein
(star),
cholesterol
side
chain-cleavage
enzyme,
P450scc
(cyp11a1),
3β-hydroxysteroid
dehydrogenase
(3bhsd),
while
transcripts
encoding
11β-hydroxysteroid
(11bhsd)
sex
hormone-binding
globulin
(shbg)
females
constant
only.
Ovarian
aromatase
(cyp19a1a)
mRNA
levels
unaffected,
but
circulating
17β-estradiol
(E2)
was
compared
condition.
In
liver,
choriogenins
vitellogenin
downregulated
conditions,
hepatic
estrogen
receptor
2a
(esr2a)
shbg
females.
Taken
together,
results
demonstrate
potential
impair
steroidogenesis
reduce
egg
envelope
production
female
C.
n.
amargosae
pupfish,
also
shedding
light
only
intermittently
reach
range
reproduction
have
differential
impacts
than
constantly
warm
conditions.
Language: Английский
Impact of Temperature Upon Expression Levels of Thrr, Gnrhr, and Fshr Leading to Gonadal Maturation of G5 Transgenicmutiara Strain Female Catfish (Clarias Gariepinus)
Research Square (Research Square),
Journal Year:
2024,
Volume and Issue:
unknown
Published: July 4, 2024
Abstract
This
study
aims
to
determine
the
impact
of
temperature
upon
relative
expression
ratio
thyroid
hormone
receptor
(
THRr),
gonadotrophin-releasing
(
GnRHr),
follicle
stimulating
(
FSHr)
and
ꞵ-actin
genes
as
internal
control
in
transgenic
G5
mutiara
female
catfish
non-transgenic
using
real-time
PCR.
In
addition,
growth
(
GH)
estradiol
(
E2)
levels
which
both
induced
gonadal
was
further
observed.
The
treatment
(A:
22°C;
B:
26°C;
C:
30°C
for
fish;
A*:
B*:
C*:
fish)
were
designed
with
6
replicates
(
n
=
6)
during
a
60-day
rearing
period.
A
warm
(26°C)
optimum
that
THRr,
GnRHr,
FSHr
gene
expressions
(means,
3.40
±
0.69,
4.23
0.62,
7.25
0.43
respectively)
higher
GH
6.13
0.78
ng/ml)
E2
(means
5.78
1.05
leading
an
increase
ovary
weight
59.90
2.20
g)
fish
than
non-transgenic.
Meanwhile,
low
(22°C)
high
(30°C)
caused
decrease
fish.
presence
CgGH
able
maintain
adequate
has
potential
stimulate
gonads
at
temperatures
(30°C).
Language: Английский
Divergent perspectives on the synergistic impacts of thermal-chemical stress on aquatic biota within the framework of climate change scenarios
Research Square (Research Square),
Journal Year:
2023,
Volume and Issue:
unknown
Published: Nov. 23, 2023
Abstract
Climate
change,
particularly
global
warming,
leads
to
increased
temperatures
in
aquatic
ecosystems,
impacting
organisms
by
altering
pollutant
toxicity
levels.
Existing
research
has
mainly
focused
on
chemical
stress
biota,
with
limited
knowledge
about
how
these
chemicals
interact
climate
especially
elevated
temperatures.
This
review
paper
examines
the
potential
impacts
of
thermochemical
a
broad
range
both
freshwater
and
marine
including
vertebrates
invertebrates.
The
study
aims
provide
latest
insights
into
effects
water
(without
stress)
various
biochemical
physiological
processes
fauna
their
significant
implications
for
biodiversity
sustainability.
underscores
pressing
need
comprehensive
investigations
scientific
reports
address
this
critical
environmental
issue
develop
sustainable
solutions,
light
combined
risks
posed
anthropogenic
pollutants
(climate
change
pollution).
Language: Английский
Developing a Biomarker to Cold Shock in the Yellow Perch, Perca flavescens
M K Thapar
No information about this author
Published: Jan. 1, 2023
Fish
kills
are
common
and
can
be
attributed
to
natural
anthropogenic
sources.
Yet,
it
is
difficult
properly
attribute
a
specific
cause
fish
death.
Utilities
have
found
similar
problem
where
impingement
events
coincide
with
rapid
reductions
in
water
temperature.
Hence,
this
study
focused
on
developing
biomarker
for
cold
shock
fish.
In
thesis
I
used
the
expression
of
twenty-eight
genes
yellow
perch
(Perca
flavescens)
isolate
between
stressors
varying
degrees
shock.
also
assessed
gene
different
exposures
over
time.
Potential
biomarkers
were
identified:
cirbp,
igf1,
igf2,
cam,
mhcI.
The
markers
was
up
downregulated.
findings
contribute
knowledge
gap
literature
field
provides
novel
identification.
Language: Английский
Thyroid hormone and reproduction in fishes
Elsevier eBooks,
Journal Year:
2024,
Volume and Issue:
unknown, P. 111 - 139
Published: Jan. 1, 2024
Language: Английский
Using Biometrics, Behavioral Observations, and Multiple Molecular Techniques to Assess the Impacts of Changes in Temperature and Salinity on the Common Bay Mussel (<i>Mytilus trossulus</i>)
Published: Nov. 1, 2023
The
intertidal
zone
is
a
place
of
rapid
and
frequent
change
that
home
to
variety
creatures
who
are
essential
the
integrity
habitat.
Mussels
robust
sessile
bivalves
anchor
rocks
intertidal.
prominent
species
on
Oregon
Coast,
Common
Bay
Mussel
(Mytilus
trossulus),
plays
an
role
as
coastal
food
source,
water
column
filter,
barrier
prevent
erosion
due
wave
action.
Mytilus
trossulus
withstands
daily
shifts
in
temperature,
salinity,
tide,
well
seasonal
changes.
Global
climate
excess
carbon
emissions
expected
increase
decrease
cause
sea
level
beyond
what
organisms
such
M.
experience.
Observing
response
these
changing
conditions
can
reveal
limits
invertebrates
leading
its
potential
biological
indicator
for
change.
To
gain
comprehensive
understanding
impacts
change,
we
must
understand
navigate
various
ways
testing
this
species.
Language: Английский