Journal of Fish Diseases,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Dec. 13, 2024
ABSTRACT
The
pejerrey
(
Odontesthes
bonariensis
)
is
a
key
species
for
recreational
and
commercial
fisheries
in
Argentina
holds
significant
aquaculture
potential.
It
has
been
introduced
to
various
countries
worldwide,
including
Japan,
where
intensive
developed.
However,
infectious
diseases
present
major
challenges
its
cultivation,
as
susceptible
diverse
pathogens,
bacteria,
fungi
parasites.
primary
bacterial
pathogens
affecting
include
the
genera
Aeromonas
,
Pseudomonas
Mycobacterium
M.
piscida
).
Fungal‐like
such
Saprolegnia
spp.,
fungal
Achyla
racemosa
Fusarium
F.
solani
semitectum
are
also
prevalent.
Additionally,
hosts
external
internal
parasites,
primarily
Lernaea
cyprinacea
members
of
Cangatiella
Gyrodactylus
Contracaecum
Diplostomum
.
This
review
explores
pejerrey,
focusing
on
their
symptoms,
epidemiology
causative
based
literature
from
multiple
languages.
Although
no
new
have
emerged,
we
identified
persistent
that
remained
unsolved
decades,
highlighting
need
further
research.
Understanding
biology
these
crucial
expanding
pejerrey.
Moreover,
examine
how
environmental
changes,
global
warming,
pollution
alien
species,
may
influence
disease
dynamics
wild
populations,
stressing
management
measures
preserve
this
valuable
resource.
Biology Letters,
Journal Year:
2024,
Volume and Issue:
20(2)
Published: Feb. 1, 2024
Ongoing
climate
change
has
already
been
associated
with
increased
disease
outbreaks
in
wild
and
farmed
fish.
Here,
we
evaluate
the
current
knowledge
of
change-related
ecoimmunology
teleosts
a
focus
on
temperature,
hypoxia,
salinity
acidification
before
exploring
interactive
effects
multiple
stressors.
Our
literature
review
reveals
that
acute
chronic
changes
temperature
dissolved
oxygen
can
compromise
fish
immunity
which
lead
to
susceptibility.
Moreover,
hypoxia
have
shown
enhance
infectivity
certain
pathogens/parasites
accelerate
progression.
Too
few
studies
exist
focussed
acidification,
but
direct
immune
seem
be
limited
while
led
contrasting
results.
Likewise,
multi-stressor
experiments
essential
for
unravelling
interactions
simultaneously
changing
environmental
factors
are
still
scarce.
This
ultimately
impedes
our
ability
estimate
what
extent
will
hamper
immunity.
about
epigenetic
regulation
mechanisms
highlights
acclimation
potential
response
environments.
However,
due
number
studies,
overarching
conclusions
cannot
drawn.
Finally,
provide
an
outlook
how
better
realistic
scenarios
future
Journal of Applied Phycology,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 31, 2025
Abstract
Climate
change
affects
aquaculture
to
a
significant
extent,
while
one
of
the
primary
threats
Nile
tilapia
(
Oreochromis
niloticus
)
growth
and
health
is
suboptimal
temperatures.
The
objective
this
study
was
assess
effects
Amphora
coffeaeformis
powder
extract
on
performance
status
grown
in
temperature
(21
°C).
A
total
180
fish
(31.39
±
0.5
g)
were
randomly
allocated
into
six
groups,
each
with
three
replicates.
control
group
fed
basal
diet.
second
third
groups
supplemented
50
g
kg
−1
(AMP50)
70
(AMP70)
A.
powder,
respectively.
fourth
fifth
received
(AME50)
(AME70)
extract,
sixth
(OXY)
diet
500
mg
kg⁻
1
oxytetracycline.
After
60-day
feeding
trial,
all
challenged
Aeromonas
sobria
.
findings
indicated
that
,
particularly
at
concentration
diet,
significantly
enhanced
performance,
hematological
biochemical
parameters,
antioxidant
immunological
markers.
Additionally,
it
notably
increased
resistance
against
These
results
suggest
supplementation,
AME
effectively
mitigates
productivity
by
enhancing
growth,
health,
disease
resistance.
Frontiers in Microbiology,
Journal Year:
2025,
Volume and Issue:
16
Published: Jan. 31, 2025
Aquaculture
is
an
important
source
of
antibiotics
and
ARGs
in
environmental
waters.
However,
the
occurrence
under
different
modes
stages
aquaculture
has
rarely
been
systematically
studied.
This
paper
uses
qPCR,
LC-MS,
High-Throughput
sequencing
across
culture
to
investigate
antibiotics,
resistance
genes,
microbial
communities
water
bodies,
analyze
contamination
differences
between
these
modes.
The
quinolone
chloramphenicol
were
main
highest
absolute
abundance
genes
(qnrB)
(sul1),
with
mobile
genetic
element
(MGE)
intI1,
both
which
exhibited
a
gradual
seasonal
increase.
Microbial
diversity
also
varies
seasonally,
especially
increase
some
pathogenic
bacteria
(Flavobacterium).
Antibiotics
found
at
higher
levels
fish
ponds
compared
shrimp
crab
ponds,
while
they
lower
that
utilized
ecological
mode
than
traditional
ponds.
Our
study
presents
comprehensive
characterization
waters
from
various
perspectives.
Ecological
contribute
reducing
antibiotic
gene
pollution
bodies.
These
findings
will
support
optimization
usage
green
sustainable
development
finally.
Frontiers in Immunology,
Journal Year:
2025,
Volume and Issue:
16
Published: Feb. 19, 2025
Chronic
hypoxia
events
are
a
common
occurrence
in
Atlantic
salmon
(Salmo
salar)
sea-cages,
especially
during
the
summer,
and
their
frequency
severity
predicted
to
increase
with
climate
change.
Although
is
considered
very
important
fish
health
welfare
issue
by
aquaculture
industry,
few
studies
have
investigated
impact
of
chronic
on
immune
system
its
response
pathogen
exposure.
We
exposed
post-smolt
(40%
air
sat.)
for
6
weeks.
Thereafter,
we
sampled
prior
(i.e.,
at
Time
0,
assess
constitutive
function),
after
they
were
intraperitoneally
injected
PBS
(phosphate
buffered
saline)
or
formalin-killed
Aeromonas
salmonicida.
measured
several
innate
parameters
including:
hematological
responses
[respiratory
burst
(RB),
hemolytic
activity
alternate
complement
plasma
lysozyme
concentration],
relative
percentage
circulating
blood
cells
(erythrocytes/immature
erythrocytes,
monocytes,
granulocytes
lymphocytes)
0
24
hours
post-injection
(hpi);
transcript
expression
levels
8
anti-bacterial
biomarkers
head
kidney
[interleukin-1
beta
(il1b),
interleukin-8a
(il8a),
cyclooxygenase-2
(cox2),
toll-like
receptor
5,
secreted
(strl5),
CC
chemokine-like
19b
(ccl19b),
serum
amyloid
A5
(saa5),
hepcidin
anti-microbial
peptide
(hampa)
cathelicidin
b
(campb)]
hpi.
In
addition,
immunoglobulin
(IgM)
weeks
(4
'boost'
injection).
Fish
had
greater
numbers
which
was
consistent
RB,
concentration
upregulated
gene
campb,
ccl19b,
hampa,
il8a,
stlr5).
contrast,
hypoxia:
reduced
RB
leukocyte
hpi
Asal
compared
PBS-injected
fish,
il1b,
saa5,
il8a
stlr5
6-
and/or
24-
hpi;
but
no
effect
post-stimulation
IgM
titers.
Overall,
our
results
indicate
that
has
differential
effects
function
vs.
following
antigen
exposure,
thus,
it
still
unclear
how
will
capacity
defend
against
pathogens.
Animals,
Journal Year:
2024,
Volume and Issue:
14(13), P. 2014 - 2014
Published: July 8, 2024
Comprehending
the
immune
defense
mechanisms
of
new
aquaculture
species,
such
as
Chilean
meagre
(Cilus
gilberti),
is
essential
for
sustaining
large-scale
production.
Two
bioassays
were
conducted
to
assess
impact
acute
and
intermittent
hypoxia
on
antibacterial
activity
juvenile
epidermal
mucus
against
potential
pathogens
Vibrio
anguillarum
ordalii.
Lysozyme
peroxidase
activities
also
measured.
In
general,
fish
exposed
showed
a
9–30%
reduction
in
at
end
hypoxic
periods
after
stimulation
with
lipopolysaccharide.
However,
following
water
reoxygenation,
non-stimulated
was
comparable
that
normoxic
conditions,
inhibiting
bacterial
growth
by
35–52%.
case
chronic
hypoxia,
response
V.
increased
an
additional
19.8%
6
days
control
inoculation.
exhibited
similar
pattern,
while
no
modulation
detected
post-hypoxia.
These
results
highlight
resilience
C.
gilberti
dissolved
oxygen
fluctuations
contribute
understanding
maintaining
health
cultured
development
future
strategies.
