Farming of Indigenous Crayfish in Russia: A Mini-Review of Recent Studies
Animals,
Год журнала:
2025,
Номер
15(2), С. 223 - 223
Опубликована: Янв. 15, 2025
Natural
populations
of
crayfish
in
Europe
have
experienced
significant
declines
due
to
the
spread
plague,
overfishing,
competition
with
invasive
species,
and
habitat
degradation.
Consequently,
farming
has
gained
importance
meeting
increasing
demand
for
products.
Although
Russia
boasts
abundant
water
resources,
development
aquaculture
remains
nascent.
In
this
review,
we
consolidate
recent
studies
by
Russian
researchers
that
focus
on
various
aspects
cultivation.
Extensive
cultivation
open
ponds
is
most
suitable
method,
owing
its
accessibility
lower
costs;
however,
it
necessitates
environmental
conditions
within
bodies.
The
production
cycle
encompasses
pond
preparation,
stocking,
exploration,
restoration,
monitoring.
Controlled
egg-bearing
females
essential
producing
high-quality
seedstock
subsequent
rearing.
Experimental
evidence
suggests
exhibit
high
adaptability
artificial
conditions,
formulated
diets
comprising
feeds
sturgeon
powdered
dried
beef
by-products
demonstrating
promising
results
terms
growth
performance.
Plastic
tangled
threads
mink
shelters
are
recommended
reduce
cannibalism.
Short-term
grow-out
juvenile
can
yield
a
profit
margin
17%,
while
complete
two-year
projected
achieve
financial
break-even
over
three
years.
primary
challenges
confronting
industry
include
disease
management,
cannibalism,
need
skilled
technical
personnel,
insufficient
policy
support.
Язык: Английский
Advancing Crayfish Disease Detection: A Comparative Study of Deep Learning and Canonical Machine Learning Techniques
Applied Sciences,
Год журнала:
2024,
Номер
14(14), С. 6211 - 6211
Опубликована: Июль 17, 2024
This
study
evaluates
the
effectiveness
of
deep
learning
and
canonical
machine
models
for
detecting
diseases
in
crayfish
from
an
imbalanced
dataset.
In
this
study,
measurements
such
as
weight,
size,
gender
healthy
diseased
individuals
were
taken,
at
least
five
photographs
each
individual
used.
Deep
outperformed
models,
but
combining
both
approaches
proved
most
effective.
Utilizing
ResNet50
model
automatic
feature
extraction
subsequent
training
RF
algorithm
with
these
extracted
features
led
to
a
hybrid
model,
RF-ResNet50,
which
achieved
highest
performance
sample
detection.
result
underscores
value
integrating
algorithms
models.
Additionally,
ConvNeXt-T
optimized
AdamW,
performed
better
than
those
using
SGD,
although
its
disease
detection
sensitivity
was
1.3%
lower
model.
McNemar’s
test
confirmed
statistical
significance
differences
between
AdamW.
The
model’s
improved
by
3.2%
when
combined
algorithm,
demonstrating
potential
enhancing
accuracy.
Overall,
highlights
advantages
leveraging
techniques
early
accurate
populations,
is
crucial
maintaining
ecosystem
balance
preventing
population
declines.
Язык: Английский
An old unknown: 40 years of crayfish plague monitoring in Switzerland, the water tower of Europe
Journal of Invertebrate Pathology,
Год журнала:
2024,
Номер
206, С. 108159 - 108159
Опубликована: Июнь 24, 2024
Язык: Английский
Biology and cultivation of freshwater crayfish (Astacoidea) in Ukraine and worldwide. Thematic list of scientific publications (2019–2024)
Ribogospodarsʹka nauka Ukraïni,
Год журнала:
2024,
Номер
2(68), С. 164 - 185
Опубликована: Июнь 28, 2024
Purpose.
Compiling
a
list
of
sources,
which
may
be
useful
for
learning
about
studies
and
issues
related
to
river
crayfish,
their
ecology
biology.
Methodology.
The
holistic
approach
allowed
getting
acquainted
with
broad
range
literature
on
the
study
topic,
while
selective
focusing
specific
aspects
or
authors
specializing
in
this
field.
Attention
was
focused
papers
scientific
journals
collections,
materials
temporary
teams,
as
well
monographs
devoted
biology
crayfish.
Findings.
A
thematic
main
works
-
international
practical
conferences,
articles
from
collections
works,
abstracts
dissertations
crustaceans
cultivation
global
crayfish
aquaculture
has
been
prepared.
cited
cover
time
period
2019
2024.
bibliography
contains
166
publications,
placed
alphabetical
order
described
accordance
requirements
HAC,
DSTU
8302:2015
«Information
documentation.
Bibliographic
reference.
General
provisions
rules
drafting»,
taking
into
account
amendments
(UKND
code
01.140.40).
Practical
value.
can
law-making
activities,
maintenance
ecological
security
Ukraine,
specialists,
scientists,
students
interested
crustacean
farming.
Key
words:
management,
cultivation,
commercial
harvest,
feeding,
freshwater
Язык: Английский