Revista de la Facultad de Agronomía,
Год журнала:
2023,
Номер
40(Supplement), С. e2340Spl07 - e2340Spl07
Опубликована: Дек. 18, 2023
The
ecosystem
approach
to
semi-intensive
culture
of
Penaeus
vannamei
is
crucial
for
understanding
and
managing
water
quality
planktonic
communities
in
aquaculture
systems.
This
study
focuses
on
analyzing
the
interrelationship
between
structural
functional
elements,
using
phytoplankton
zooplankton
as
bioindicators
trophic
conditions.
objective
provide
detailed
information
dynamics
these
systems,
which
will
improve
survival,
feed
conversion
shrimp
production.
A
systematic
review
was
carried
out
specific
keywords
relevant
scientific
databases,
made
it
possible
collect
updated
topic.
discussion
importance
a
primary
producer,
its
influence
role
diet
shrimp.
Recommendations
maintaining
beneficial
balance
cropping
systems
are
detailed.
Furthermore,
link
food
chain
analyzed,
providing
recommendations
desirable
amount
farming.
Strategies
address
challenges
related
productivity
chains
ponds
also
discussed.
In
conclusion,
this
highlights
farming,
underlining
need
understand
manage
achieve
successful
sustainable
ABSTRACT
Bioflocs
are
microbial
aggregates
that
play
a
pivotal
role
in
shaping
animal
health,
gut
microbiota,
and
water
quality
biofloc
technology
(BFT)-based
aquaculture
systems.
Despite
the
worldwide
application
of
BFT
industries,
our
comprehension
community
composition
functional
potential
floc-associated
microbiota
(FAB
community;
≥3
µm
size
fractions)
remains
rudimentary.
Here,
we
utilized
genome-centric
metagenomic
approach
to
investigate
FAB
shrimp
systems,
resulting
reconstruction
520
metagenome-assembled
genomes
(MAGs)
spanning
both
bacterial
archaeal
domains.
Taxonomic
analysis
identified
Pseudomonadota
Bacteroidota
as
core
members,
with
approximately
93%
recovered
MAGs
unclassified
at
species
level,
indicating
large
uncharacterized
phylogenetic
diversity
hidden
community.
Functional
annotation
these
unveiled
their
complex
carbohydrate-degrading
involvement
carbon,
nitrogen,
sulfur
metabolisms.
Specifically,
genomic
evidence
supported
ammonium
assimilation,
autotrophic
nitrification,
denitrification,
dissimilatory
nitrate
reduction
ammonia,
thiosulfate
oxidation,
sulfide
oxidation
pathways,
suggesting
community’s
versatility
for
aerobic
anaerobic
Conversely,
genes
associated
heterotrophic
assimilatory
reduction,
sulfate
were
undetected.
Members
Rhodobacteraceae
emerged
most
abundant
metabolically
versatile
taxa
this
intriguing
Our
compendium
is
expected
expand
available
genome
collection
from
such
underexplored
environments.
By
elucidating
structure
metabolic
capabilities,
study
provides
valuable
insights
into
key
biogeochemical
processes
occurring
aquacultures
major
contributors
driving
processes.
IMPORTANCE
Biofloc
has
sustainable
approach,
utilizing
(bioflocs)
improve
health.
However,
specific
within
responsible
benefits
largely
unknown.
Compounding
challenge,
many
resist
laboratory
cultivation,
hindering
taxonomic
analyses.
To
address
gaps,
employed
binning
recover
over
500
systems
operating
South
Korea
China.
Through
analyses,
deciphered
gene
content
diverse
taxa,
shedding
light
on
roles
like
nitrogen
Notably,
findings
underscore
taxa-specific
contributions
microbes
environments,
particularly
carbon
degradation
removal
toxic
substances
nitrate,
sulfide.
Biofloc
technology
is
increasingly
recognised
as
a
sustainable
aquaculture
method.
In
this
technique,
bioflocs
are
generated
microbial
aggregates
that
play
pivotal
roles
in
assimilating
toxic
nitrogenous
substances,
thereby
ensuring
high
water
quality.
Despite
the
crucial
of
floc-associated
bacterial
(FAB)
community
pathogen
control
and
animal
health,
earlier
microbiota
studies
have
primarily
relied
on
metataxonomic
approaches.
Here,
we
employed
shotgun
sequencing
eight
biofloc
metagenomes
from
commercial
system.
This
resulted
generation
106.6
Gbp,
reconstruction
444
metagenome-assembled
genomes
(MAGs).
Among
recovered
MAGs,
230
were
high-quality
(≥90%
completeness,
≤5%
contamination),
214
medium-quality
(≥50%
≤10%
contamination).
Phylogenetic
analysis
unveiled
Rhodobacteraceae
dominant
members
FAB
community.
The
reported
MAGs
for
elucidating
diverse
microorganisms
their
functional
genes
key
processes
such
nitrification,
denitrification,
remineralization.
study
will
contribute
to
scientific
understanding
phylogenetic
diversity
metabolic
capabilities
taxa
environments.
npj Biofilms and Microbiomes,
Год журнала:
2024,
Номер
10(1)
Опубликована: Ноя. 17, 2024
Rumen
microbiotas
are
known
to
influence
the
fat
deposition
(FD)
in
sheep,
but
controversy
over
causality
remains
unresolved.
Here,
we
performed
microbiome-wide
association
studies
(MWAS),
microbiome
genome-wide
analysis
(mbGWAS)
and
bidirectional
mendelian
randomization
(MR)
analyses
on
1,150
sheep
with
genotype
data
from
whole-genome
resequencing,
16S
rRNA
sequencing
multilevel
FD-traits
data.
We
quantified
proportion
of
individual
variation
explained
by
host
genetics,
rumen
microbiota,
their
interaction
effects.
identified
32
microbiota
biomarkers
including
Bifidobacterium
that
were
associated
(Padj
<0.05).
Further,
utilizing
five
MR
methods,
eight
causal
associations
between
marker
genera
<0.05),
Butyrivibrio,
Olsenella,
p-2534-18B5
gut
group,
Prevotellaceae
UCG-003,
Pseudobutyrivibrio
causing
forward
effects
FD,
changes
Flexilinea
Suttonella
induced
FD.
To
our
knowledge,
this
is
inaugural
attempt
employ
investigate
relationships
gastrointestinal
complex
phenotypes,
underscoring
potential
for
developing
interventions
related
adipose
perspective
microbiome.
