Reviews in Fisheries Science & Aquaculture,
Год журнала:
2020,
Номер
28(3), С. 322 - 339
Опубликована: Март 26, 2020
Marine
and
freshwater
spawning
environments
present
fish
sperm
with
unique
challenges,
but
for
both,
gametes
often
signal
prior
to
contact
via
biochemical
interactions
through
maternally-derived
compounds
(i.e.
eggs
ovarian
fluid;
OF).
For
example,
when
OF
is
incorporated
into
the
fertilization
environment,
have
been
observed
exhibit
changes
in
swimming
trajectories
(e.g.
motility
velocity),
yet
it
remains
unclear
whether
presence
of
this
consistently
improves
performance.
The
objectives
study
were
determine
overall
effect
on
performance
using
meta-analysis.
Published
literature
was
searched
studies
comparing
and/or
velocity
absence
OF.
each
study,
log
response
ratios
(lnRR)
calculated,
which
positive
values
indicate
improved
motility,
size
non-significant
(lnRR
=
0.09,
CL
−0.06,
0.24),
whereas
positively
affected
by
0.10;
0.04,
0.17).
When
segregated
species
there
a
significant
0.18,
0.07,
0.29),
translated
an
increase
20%.
In
contrast,
no
detected
marine
−0.01,
−0.02,
0.01).
Overall,
evidence
that
performance,
although
environment
taxonomic
factors
are
likely
moderate
these
sperm-OF
interactions.
Together,
results
further
our
understanding
natural
reproductive
processes
governing
mating
systems,
dynamics.
Fish Physiology and Biochemistry,
Год журнала:
2024,
Номер
50(5), С. 2053 - 2066
Опубликована: Фев. 7, 2024
The
current
climate
change
situation
could
bring
critical
effects
for
marine
species,
especially
those
already
considered
endangered.
Although
some
species
can
adapt
fast
to
the
environmental
changes,
it
is
necessary
get
into
worst
scenario
and
develop
tools
anticipatedly
assess
physiological
of
such
change.
With
this
purpose,
our
study
aims
determine
effect
a
range
seawater
temperatures
pHs
on
sperm
motility
in
European
eel
(Anguilla
anguilla).
Low
pH
(6.5-7.4)
decreased
comparison
control
(pH
=
8.2).
We
also
studied
combined
artificial
seminal
plasma
(the
where
cells
are
suspended)
with
Artificial
Sea
Water
(ASW,
7.8
or
did
not
find
statistical
differences
kinetic
parameters
caused
by
pH.
However,
induced
significantly
higher
values
total
motility,
percentage
spermatozoa
8.2
7.8.
In
contrast,
temperature
affect
longevity.
To
interaction
between
two
temperatures:
4
24
°C,
8.2,
were
tested.
There
significant
several
and,
general,
lowest
observed
samples
activated
at
low
(4
7.8).
This
work
suggest
that
kinetics
will
be
affected
expected
changes
due
Rybovodstvo i rybnoe hozjajstvo (Fish Breeding and Fisheries),
Год журнала:
2025,
Номер
5, С. 374 - 387
Опубликована: Май 22, 2025
The
widespread
use
of
dimethyl
sulfoxide
(DMSO)
as
a
cryoprotector
for
fish
spermatozoa,
including
relict
sturgeons,
well
solvent
lipophilic
antioxidants
introduced
into
basic
DMSO-containing
cryoprotective
media,
increases
the
risk
cryodamage
to
reproductive
cells
these
species,
which
have
low
cryoresistance.
work
investigated
effect
different
concentrations
this
(10,
11,
16,
21,
27
and
32%)
in
medium
(3
mmol/l
KCl,
111
NaCl,
2
CaCl2,
24
NaHCO3
200
glucose)
on
parameters
beluga
sperm
motility
(percentage
motile
cell
movement
time)
before
after
cryopreservation.
With
an
increase
concentration
DMSO,
significant
decrease
percentage
spermatozoa
was
found
equilibration
stage
15
min,
confirms
toxicity
sturgeon
spermatozoa.
Beluga
sperm,
defrosted
freezing
low-temperature
(–196
°C)
storage
3
days,
demonstrates
only
10.5–2.8%
cryopreservation,
with
exception
DMSO
32%,
at
is
already
87.5%
freezing.
Non-monotonic
dependencies
duration
cryopreservation
were
established,
indicates
importance
optimizing
protocols
preserving
male
sturgeons
using
media.
Marine Pollution Bulletin,
Год журнала:
2022,
Номер
177, С. 113487 - 113487
Опубликована: Март 1, 2022
Nanoparticles
(NP)
are
potentially
reprotoxic,
which
may
compromise
the
success
of
populations.
However,
reprotoxicity
NP
is
still
scarcely
addressed
in
marine
fish.
Therefore,
we
evaluated
impacts
environmentally
relevant
and
supra
environmental
concentrations
titanium
dioxide
(TiO2:
10
to
10,000
μg·L-1)
silver
(Ag:
0.25
250
on
sperm
gilthead
seabream
(Sparus
aurata).
We
performed
short-term
direct
exposures
(ex
vivo)
motility,
head
morphometry,
mitochondrial
function,
antioxidant
responses
DNA
integrity.
No
alteration
motility
(except
for
Ag
concentration),
integrity
occurred.
depletion
all
antioxidants
occurred
after
exposure
TiO2
NP,
whereas
SOD
decreased
(lowest
intermediate
concentration).
Considering
our
results,
decrease
did
not
indicate
vulnerability
towards
oxidative
stress.
induced
low
spermiotoxicity,
without
proven
ecological
impacts.
Abstract
Background
Substantial
variation
in
male
fertility
is
regularly
observed
farmed
Arctic
charr.
However,
detailed
investigations
of
its
fluctuation
during
a
reproductive
season
and
across
years
are
lacking.
Furthermore,
information
about
the
effect
underlying
genetic
factors
influencing
sperm
quality
scarce.
The
current
study
focused
on
seasonal
age-related
that
may
affect
characteristics
males
reared
natural
delayed
photoperiods.
Animals
were
sampled
three
times
for
two
consecutive
years,
parameters
recorded
using
computer-assisted
analysis
(CASA)
system.
Thereafter,
high-throughput
sequencing
technologies
applied,
aiming
to
identify
genomic
regions
related
throughout
season.
Results
An
across-season
was
evident.
Overall,
29%
42%
from
spawning
groups
had
highly
variable
total
progressive
motility.
Males
at
four
age
showed
significantly
higher
motility
velocities
early
October
November
recordings
compared
following
year
when
same
animals
five
age.
On
other
hand,
opposite
regarding
concentration
last
sampling.
A
genome-wide
F
ST
scan
detected
SNP
differentiation
among
with
high
low
variability
(PM)
eight
chromosomes
(
>
0.17),
Genome
wide
windows
highest
contained
SNPs
proximity
(within
250
kb
up-
downstream
distance)
16
genes
biological
functions
mammalian
species.
Conclusion
Our
findings
provide
view
seasonal,
age-related,
effects
can
be
used
guide
decisions
broodstock
selection
hatchery
management.
Reproduction Fertility and Development,
Год журнала:
2018,
Номер
30(6), С. iii - iii
Опубликована: Янв. 1, 2018
Reproduction,
Fertility
and
Development
is
an
international
journal
publishing
original
research
,
review
comment
in
the
fields
of
reproduction
developmental
biology
humans,
domestic
animals
wildlife
