Nile Tilapia Prefer Water Hyacinth as Structural Enrichment Regardless of Stocking Density
Journal of Applied Animal Welfare Science,
Journal Year:
2025,
Volume and Issue:
unknown, P. 1 - 15
Published: April 30, 2025
In
this
study,
we
investigated
whether
Nile
tilapia
(Oreochromis
niloticus),
a
commonly
farmed
species
worldwide,
prefer
artificial
water
hyacinth
-
easy-to-build
and
inexpensive
as
structural
enrichment
by
investigating
if
different
common
farm
stocking
densities
affect
such
response.
We
tested
juveniles
under
three
(12,
16,
or
20
fish
per
aquarium)
in
both
the
absence
(control
groups)
presence
(artificial
treatments)
of
for
6
weeks.
filmed
every
week,
when
was
spread
it
concentrated
one
aquarium
section.
then
analyzed
their
preference
responses
based
on
number
recorded
each
preferred
enrichment,
strong
response
that
may
override
an
initial
another
area.
Although
all
showed
hyacinth,
intensity
stronger
at
highest
density.
These
findings
indicate
is
highly
should
be
implemented
farming
conditions,
particularly
higher
densities.
Language: Английский
Effectiveness of Conditioning Strategies in Improving Fish Fitness‐Related Traits
Zonghang Zhang,
No information about this author
Gang Ning,
No information about this author
Fei Tong
No information about this author
et al.
Fish and Fisheries,
Journal Year:
2025,
Volume and Issue:
unknown
Published: Jan. 22, 2025
ABSTRACT
Although
conditioning
strategies
are
widely
used
to
increase
fish
post‐release
adaptability
in
stock
enhancement
projects,
their
effectiveness
has
not
been
systematically
evaluated.
Using
a
global‐scale
meta‐analysis,
we
demonstrate
that
three
major
strategies,
including
environmental
enrichment,
life
skills
training
and
release
tactic,
can
significantly
improve
fitness‐related
traits,
with
the
fitness
indicator
developmental
stage
being
most
important
moderators
for
interpreting
high
heterogeneity
among
cases.
The
effect
size
of
approximate
indicators
was
marginally
lower
than
behavioural
traits.
Our
findings
indicate
necessity
procedures
highlight
need
enact
context‐dependent
practical
conservation
projects.
Language: Английский
Puzzle feeder as a cognitive enrichment strategy determines long-term welfare improvements in a teleost fish
Applied Animal Behaviour Science,
Journal Year:
2024,
Volume and Issue:
unknown, P. 106401 - 106401
Published: Sept. 1, 2024
Language: Английский
Problems and solutions for hatchery release: a framework
Frontiers in Marine Science,
Journal Year:
2023,
Volume and Issue:
10
Published: Sept. 28, 2023
OPINION
article
Front.
Mar.
Sci.,
28
September
2023Sec.
Marine
Fisheries,
Aquaculture
and
Living
Resources
Volume
10
-
2023
|
https://doi.org/10.3389/fmars.2023.1252589
Language: Английский
A Global Synthesis of Environmental Enrichment Effect on Fish Stress
Zonghang Zhang,
No information about this author
Yijie He,
No information about this author
Jiujiang Wang
No information about this author
et al.
Fish and Fisheries,
Journal Year:
2024,
Volume and Issue:
26(1), P. 131 - 154
Published: Nov. 17, 2024
ABSTRACT
The
stress‐coping
ability
(SCA)
is
one
of
the
core
aspects
fish
welfare
and
vital
importance
for
production
in
aquaculture
industry
fitness
hatchery
release.
Environmental
enrichment
(EE),
a
method
introducing
external
stimuli
into
husbandry
environment,
has
been
recently
proposed
to
improve
SCA,
but
present
experimental
evidence
mixed,
reasons
these
discrepancies
are
unclear.
Here,
we
conducted
global
meta‐analysis
using
data
set
that
consists
1786
cases
from
107
studies
across
42
species
solve
this
problem.
Overall,
found
enriched
had
significantly
higher
SCA
than
control
fish,
reflected
either
basal
stress
levels
or
responses.
Meta‐regression
analyses
showed
specific
subgroups
type,
developmental
stage,
category,
duration,
place,
sample
tissue
indicator
system
significant
positive
EE
effects
on
SCA.
Multi‐model
inference
indicated
system,
characteristic
mode
important
drivers
high
heterogeneity
among
effect
sizes.
These
results
highlight
rearing
systems,
which
will
not
only
increase
also
ecological
adaptability
released
fish.
comprehensive
knowledge
obtained
analysis
provide
insights
ontogenetic
plasticity
its
responses
have
implications
improving
cycle
fisheries
conservation.
Language: Английский
A Review of Factors Affecting Farmed Atlantic Salmon (Salmo salar) Welfare in Australia and Beyond
Published: April 11, 2024
With
the
increasingly
global
scale
and
scope
of
aquaculture,
need
to
match
this
development
with
improvements
in
fish
welfare
is
a
central
societal
industry
goal.
We
provide
comprehensive
assessment
farmed
Atlantic
salmon
(Salmo
salar)
literature
targeted
examples
focusing
on
Tasmania,
Australia.
synthesise
insights
from
both
small-
industry-scale
perspectives,
highlighting
other
reviews
that
discussions
particular
sub-areas
research.
focus
recent
advances
improved
methods
for
handling
management,
behaviour,
health
issues
breeding.
also
address
wildlife
interactions
resulting
farming,
as
well
future
research
directions
system
development.
This
review
can
serve
basis
aquaculture
management
guidelines
place
individual
primary
Language: Английский
Method for obtaining ecological products from rainbow trout Oncorhynchus mykiss farming
Regulatory Mechanisms in Biosystems,
Journal Year:
2024,
Volume and Issue:
15(2), P. 245 - 252
Published: April 20, 2024
In
aquaculture,
the
period
of
active
development
aquatic
organisms
is
considered
one
most
important
for
formation
potential
in
future.
The
issue
using
natural
components
when
growing
and
feeding
young
fish
given
special
attention.
This
research
investigated
Spirulina
(25%)
+
Vermiculture
(50%)
Hermetia
illucens
as
an
additional
source
functional
substances
protein
that
affect
body
performance
rainbow
trout
early
ontogenesis.
All
objects
were
cultured
a
bioreactor,
which
was
component
recirculating
aquaculture
model
system
well
laboratory,
where
installation
made
cultivating
food.
results
scientific
practical
part
work
showed
after
end
experiment,
weight
higher
experimental
by
7.2%
than
control
group.
article
presents
cases
improving
morpho-functional
biochemical
composition
blood
this
species:
increase
total
number
red
cells
11.0%,
hemoglobin
content
9.7%,
at
22.7%,
albumin
24.2%,
creatinine
15.5%,
compared
with
presented
positive
changes
status
organism
harmony
parameters
weight,
histological
indicators.
Histological
indicators
liver
muscle
tissue
supplemented
obtained
result
influence
feed.
Feeding
according
to
scheme
group
promotes
layers
adipose
endomysium.
amount
stromal
25%
mass
entire
tissue.
fibers
polygonal
cross
section,
separated
from
each
other
within
bundle
delicate
When
standard
regimen
(control
group),
moderately
expanding
structure
replaces
space
between
fibers.
had
significant
intensification
individual
aspects
homeostasis
achieved
help
feed
(experimental
group)
growth
thickness
due
new
fibrils,
but
not
proportion
sarcoplasm
(watery
meat).
As
result,
neurohumoral
regulation
substance
synthesis
processes
improved
fishes’
body,
helps
improve
ontogenesis
rates.
ingredients
diet
are
stimulants
metabolic
sources
nutrients.
method
allows
be
defined
being
close
possible
“environmentally
safe”.
next
stage
will
comprehensive
analysis
qualitative
quantitative
characteristics
meat
under
factor.
Language: Английский
Enrichment effects on growth, health, and reproduction in a single clone of the asexual Amazon molly, Poecilia formosa
Debbie Cunningham,
No information about this author
Tyler Reich,
No information about this author
Theresa E. Rizzi
No information about this author
et al.
PeerJ,
Journal Year:
2024,
Volume and Issue:
12, P. e18734 - e18734
Published: Dec. 23, 2024
This
study
examines
the
impact
of
two
types
environmental
enrichment
on
growth
Amazon
molly
(
Poecilia
formosa
),
a
clonal
fish
species.
We
investigated
effects
welfare-related
factors:
physical
(presence
halfpipe
PVC
and
gravel
substrate,
E)
social
visible
neighbor
fish,
N).
Fish
were
divided
into
four
treatment
groups:
(1)
both
(EN),
(2)
no
but
(nEN),
(3)
without
(EnN,),
(4)
(nEnN).
Results
showed
that
individuals,
which
received
enrichment,
exhibited
faster
rates
lower
early
life
mortality
compared
to
other
groups,
indicating
improved
health
welfare.
However,
this
initial
advantage
did
not
persist
adulthood,
suggesting
benefits
may
be
stage
specific.
These
findings
highlight
importance
factors
in
promoting
welfare
particular
species,
especially
during
developmental
stages.
have
implications
for
life-stage
research
some
play
role
enhancing
growth,
reproductive
competence,
reduced
mortality.
Enrichment
health,
reproduction
single
clone
asexual
molly,
.
Language: Английский
Shelter or complexity? Nile tilapia (Oreochromis niloticus) preference for enrichment structures is a matter of time and frequency of visits.
Applied Animal Behaviour Science,
Journal Year:
2024,
Volume and Issue:
unknown, P. 106498 - 106498
Published: Dec. 1, 2024
Language: Английский
Study of Bottom Substrate Variation in Zero Water Discharge Aquaculture for Mahseer Fish <i>Tor soro</i> Nursery
Polish Journal of Environmental Studies,
Journal Year:
2023,
Volume and Issue:
33(1), P. 341 - 349
Published: Oct. 27, 2023
Mahseer
fish
Tor
soro
was
classified
as
one
of
Indonesia's
endemic
species
distributed
in
Sumatra,
Kalimantan,
and
Java
islands
[1].Currently,
among
the
18
assessed
by
International
Union
for
Conservation
Nature
(IUCN),
50%
are
threatened
to
critically
endangered.However,
T.
douronensis
species,
originating
from
Indonesia
not
included
IUCN
Red
List
[2].The
population
is
declining
primarily
due
ongoing
dependence
on
wild
captures
fulfill
consumer
demands.Moreover,
anthropogenic
activities
deforestation,
land
conversion,
pollution
river
or
lake
can
disrupt
crucial
habitat
conditions
environmental
quality
[1].Addressing
this
issue
necessitates
implementation
cultivation
Language: Английский