Ciência Animal Brasileira,
Год журнала:
2025,
Номер
26
Опубликована: Янв. 1, 2025
Abstract
The
aim
of
this
study
was
to
evaluate
the
phytobiotic
potential
oils
from
Copaifera
langsdorffii
(copaiba),
Carapa
guianensis
(andiroba),
Attalea
speciosa
(babassu),
Mauritia
flexuosa
(buriti),
and
Caryocar
brasiliense
(pequi),
as
well
two
types
aqueous
extracts
Terminalia
catappa
(tropical
almond),
alternatives
antibiotics
containing
enrofloxacin
or
oxytetracycline
active
ingredients
in
continental
aquaculture.
Five
species-specific
pathogens
with
high
prevalence
dissemination
fish
farming
systems
were
selected
for
study.
virulence
strains
assessed
using
Gram
staining,
catalase,
hemolytic
activity
tests,
followed
by
inhibition
halo
assays
potential.
All
exhibited
vitro
subjected
evaluations,
where
inhibitory
zones
tested
products
measured,
along
their
bactericidal
bacteriostatic
effects.
Among
evaluated
products,
only
A.
did
not
exhibit
an
against
analyzed
pathogens.
Conversely,
C.
brasiliense,
M.
flexuosa,
guianensis,
langsdorffii,
hot
extract
T.
demonstrated
effects,
yielding
superior
results
(P
>
0.05)
compared
positive
control
oxytetracycline.
proved
be
competitive
ingredients,
showing
antibacterial
action
Aeromonas
hydrophila,
caviae,
jandaei,
Streptococcus
agalactiae.
North American Journal of Aquaculture,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 20, 2025
Abstract
Objective
The
purpose
of
this
study
was
to
develop
ecofriendly
and
sustainable
copper
nanoparticles
(CuNPs)
using
Padina
pavonica
extract.
CuNPs
were
characterized
scanning
electron
microscopy
(SEM)
for
morphological
analysis,
energy
dispersive
X-ray
(EDS)
spectroscopy
elemental
composition,
Fourier
transform
infrared
(FTIR)
functional
group
identification,
UV-visible
optical
properties.
We
evaluated
the
toxicity
survival
rates
Guppy
Poecilia
reticulata
larvae
that
subjected
varied
CuNP
concentrations
determine
best
concentration
range
future
aquaculture
uses.
Methods
different
characterization
stability
synthesized
investigated
SEM,
EDS,
FTIR,
spectroscopy.
To
evaluate
safe
exposure
levels,
exposed
monitored
over
a
72-hour
period.
Results
biosynthesized
exhibited
characteristic
surface
plasmon
resonance
peaks
at
260
nm,
confirming
their
formation,
with
FTIR
revealing
involvement
groups
like
O-H
O-SO3H
in
nanoparticle
capping.
SEM
analysis
showed
irregular,
aggregated
CuNPs,
sizes
ranging
from
50
200
nm.
Energy
confirmed
including
copper,
oxygen,
chlorine,
carbon.
Conclusions
This
article
describes
environmentally
acceptable
method
manufacturing
extract
as
natural
reducing
agent.
established
an
appropriate
by
comparing
concentrations.
findings
provide
important
insights
into
use
aquaculture,
which
benefits
both
aquatic
organism
health
environmental
sustainability.
Microorganisms,
Год журнала:
2025,
Номер
13(4), С. 825 - 825
Опубликована: Апрель 5, 2025
Bivalve
microbiota
play
a
vital
role
in
host
health,
supporting
nutrient
processing,
immunity,
and
disease
resistance.
However,
the
increasing
hypoxia
Chilean
coastal
waters,
caused
by
climate
change
eutrophication,
threatens
to
disrupt
this
microbial
balance,
potentially
promoting
pathogens
impairing
essential
functions.
Mytilus
chilensis
is
vulnerable
hypoxia-reoxygenation
cycles,
yet
effects
on
its
remain
poorly
understood.
This
study
investigates
impact
of
structure
functional
potential
communities
residing
gills
digestive
glands
M.
chilensis.
Employing
full-length
16S
rRNA
gene
sequencing,
we
explored
hypoxia’s
diversity
capacity.
Our
results
revealed
significant
alterations
composition,
with
shift
towards
facultative
anaerobes
thriving
low
oxygen
environments.
Notably,
there
was
decrease
dominant
bacterial
taxa
such
as
Rhodobacterales,
while
opportunistic
Vibrio
Aeromonas
exhibited
increased
abundance.
Functional
analysis
indicated
decline
critical
functions
associated
metabolism
immune
support,
jeopardizing
health
survival
host.
sheds
light
intricate
interactions
between
host-associated
environmental
stressors,
underlining
importance
managing
face
aquaculture
practices.
Ciência Animal Brasileira,
Год журнала:
2025,
Номер
26
Опубликована: Янв. 1, 2025
Resumo
O
objetivo
dessa
pesquisa
foi
avaliar
o
potencial
fitobiótico
dos
óleos
de
Copaifera
langsdorffii
(copaíba),
Carapa
guianensis
(andiroba),
Attalea
speciosa
(babaçu),
Mauritia
flexuosa
(buriti)
e
Caryocar
brasiliense
(pequi),
além
dois
tipos
extrato
aquoso
Terminalia
catappa
(amendoeira),
como
alternativas
ao
uso
antibióticos
com
princípios
ativos
em
enrofloxacino
ou
oxitetraciclina
na
piscicultura
continental.
Para
isso,
foram
selecionados
cinco
patógenos
espécie-específicos
elevada
ocorrência
disseminação
sistemas
produção
piscícola
virulência
das
cepas
avaliado
por
meio
testes
Gram,
catalase
atividade
hemolítica,
seguido
teste
halo
inibição
para
os
potenciais
fitobióticos.
Todas
as
selecionadas
apresentaram
in
vitro
prosseguiram
a
avaliação
inibição,
qual
mensuradas
zonas
inibitórias
produtos
testados,
analisar
seus
efeitos
bactericida
bacteriostáticos.
Dos
avaliados,
apenas
A.
não
apresentou
inibitório
frente
aos
analisados,
já
C.
brasiliense,
M.
flexuosa,
guianensis,
quente
T.
efeito
bactericida,
resultados
superiores
(P
>
0,05)
comparação
controle
positivo
oxitetraciclina.
Os
mostraram-se
competitivos
princípio
ativo
oxitetraciclina,
demonstrando
ação
antibactericida
contra
Aeromonas
hydrophila,
cavie,
jandaei
Streptococcus
agalactiae.
Ciência Animal Brasileira,
Год журнала:
2025,
Номер
26
Опубликована: Янв. 1, 2025
Abstract
The
aim
of
this
study
was
to
evaluate
the
phytobiotic
potential
oils
from
Copaifera
langsdorffii
(copaiba),
Carapa
guianensis
(andiroba),
Attalea
speciosa
(babassu),
Mauritia
flexuosa
(buriti),
and
Caryocar
brasiliense
(pequi),
as
well
two
types
aqueous
extracts
Terminalia
catappa
(tropical
almond),
alternatives
antibiotics
containing
enrofloxacin
or
oxytetracycline
active
ingredients
in
continental
aquaculture.
Five
species-specific
pathogens
with
high
prevalence
dissemination
fish
farming
systems
were
selected
for
study.
virulence
strains
assessed
using
Gram
staining,
catalase,
hemolytic
activity
tests,
followed
by
inhibition
halo
assays
potential.
All
exhibited
vitro
subjected
evaluations,
where
inhibitory
zones
tested
products
measured,
along
their
bactericidal
bacteriostatic
effects.
Among
evaluated
products,
only
A.
did
not
exhibit
an
against
analyzed
pathogens.
Conversely,
C.
brasiliense,
M.
flexuosa,
guianensis,
langsdorffii,
hot
extract
T.
demonstrated
effects,
yielding
superior
results
(P
>
0.05)
compared
positive
control
oxytetracycline.
proved
be
competitive
ingredients,
showing
antibacterial
action
Aeromonas
hydrophila,
caviae,
jandaei,
Streptococcus
agalactiae.
