Biodiversitas Journal of Biological Diversity,
Journal Year:
2023,
Volume and Issue:
24(9)
Published: Oct. 10, 2023
Abstract.
Fanggi,
Hardi
EH,
Nikhlani
A,
Mahendra
AP,
Tarbiyah,
Novita,
Noerhidayanti
F.
2023.
Physical,
chemical,
and
biological
characteristics
of
crab
(Scylla
spp.)
from
East
Kalimantan,
Indonesia.
Biodiversitas
24:
4998-5006.
Mud
is
a
direct
export
commodity
to
China
The
majority
crabs
are
caught
wild
by
traditional
farmers
in
some
districts.
Early
detection
quality
required
prevent
the
rejection
mud
products
due
size,
heavy
metals,
infections.
Fifteen
samples
15
farms
Balikpapan,
Indonesia,
were
evaluated
for
physical
parameters
(weight,
carapace
width,
sex,
completeness
morphology,
identification
species),
chemical
(Cu,
Pb,
Mg,
Cd,
As),
White
Spot
Syndrome
Virus
(WSSV).
catches
Kutai
Kartanegara,
Paser,
Penajam
Paser
Utara
Districts.
examination
revealed
weight
441.73±88.14
g,
width
11.92±0,59
cm,
sexes
14
males
1
female,
species
including
Scylla
serrata
(Forskål,
1775),
olivacea
(Herbst,
1796),
paramamosain
(Estampador,
1950),
tranquebarica
(Fabricius,
1798),
93.3%
had
morphological
completeness.
Cu,
As,
still
limited
fish
products,
while
Fe
has
passed
standard,
WSSV
infected
no
crabs.
investigation
found
that
40%
Kalimantan
Province
exports
did
not
meet
criteria.
No
pathogen
was
samples.
However,
meat
concentration
exceeded
requirements.
Transboundary and Emerging Diseases,
Journal Year:
2023,
Volume and Issue:
2023, P. 1 - 9
Published: April 3, 2023
The
Chinese
mitten
crab,
Eriocheir
sinensis,
is
a
commercially
important
crustacean
in
China
due
to
its
great
commercial
value
and
compatibility
variety
of
aquaculture
systems.
However,
increases
production
have
been
accompanied
by
the
emergence
various
diseases
affecting
yield,
profit,
trading
potential.
In
this
study,
we
review
pathogenic
agents
associated
with
E.
sinensis
since
start
culture.
history
crab
cultivation
implies
that
increased
pathogen
transfer
can
occur
as
grows
because
polyculture
other
species
prevalent
practice.
With
mind,
special
focus
placed
on
pathogens
were
initially
discovered
but
demonstrated
infect
cause
disease
sinensis.
We
expect
will
not
only
offer
recommendations
for
management
sector
also
advance
cultivation.
Aquaculture Studies,
Journal Year:
2023,
Volume and Issue:
24(1)
Published: March 3, 2023
Scylla
mud
crabs
are
economically
important
portunid
species
for
aquaculture
in
many
countries.
However,
mass
production
of
as
a
supply
seafood
is
still
difficult
up-to-date.
This
review
aimed
to
provide
an
overview
the
major
constraints
faced
grow-out
farming
crabs,
and
potential
solutions
were
discussed.
The
crabs'
culture
(1)
inadequate
seed
supply,
(2)
cannibalism,
(3)
disease
outbreaks,
(4)
no
commercial
formulated
feed
that
specifically
designed
crabs.
wild
can
be
solved
through
artificial
hatcheries,
but
knowledge
crab
requirements
at
early
life
stages
needed
improve
rearing
techniques
production.
Cannibalism
manageable,
provided
farmers
knowledgeable
about
basic
prevention
methods
(shelter
provision,
size
grading,
monosex
culture)
they
practicing
it.
On
research
into
discovering
new
alternatives
antibiotics
should
prioritized.
Finally,
diet
specific
developed
replace
use
natural
products
feeding.
Host,
pathogen,
and
environment
are
determinants
of
the
disease
triangle,
latter
being
a
key
driver
outcomes
persistence
within
community.
The
dinoflagellate
genus
Hematodinium
is
detrimental
to
crustaceans
globally
-
considered
suppress
innate
defences
hosts,
making
them
more
susceptible
co-infections.
Evidence
supporting
immune
suppression
largely
anecdotal
sourced
from
diffuse
accounts
compromised
decapods.
We
used
population
shore
crabs
(Carcinus
maenas),
where
sp.
endemic,
determine
extent
collateral
infections
across
two
distinct
environments
(open-water,
semi-closed
dock).
Using
multi-resource
approach
(PCR,
histology,
haematology,
genetics,
eDNA),
we
identified
162
Hematodinium-positive
size/sex-matched
these
Hematodinium-free
out
1191
analysed.
Crabs
were
interrogated
for
known
additional
disease-causing
agents;
haplosporidians,
microsporidians,
mikrocytids,
Vibrio
spp.,
fungi,
Sacculina,
trematodes,
haemolymph
bacterial
loads.
found
no
significant
differences
in
occurrence,
severity,
or
composition
between
at
either
site,
but
crucially,
recorded
site-restricted
blends
pathogens.
gross
signs
host
cell
reactivity
towards
presence
absence
other
contend
not
proximal
co-infections
crabs,
which
suggests
an
evolutionary
drive
latency
this
environmentally
plastic
host.
Frontiers in Cellular and Infection Microbiology,
Journal Year:
2024,
Volume and Issue:
14
Published: Dec. 20, 2024
is
a
significant
pathogen
affecting
shrimp
and
crab
farming,
particularly
strains
carrying
genes
associated
with
acute
hepatopancreatic
necrosis
syndrome.
However,
the
immune
response
of
Virulence,
Journal Year:
2023,
Volume and Issue:
14(1)
Published: Feb. 23, 2023
Epizootiologists
recurrently
encounter
symbionts
and
pathobionts
in
the
haemolymph
(blood
equivalent)
of
shellfish.
One
such
group
is
dinoflagellate
genus
Hematodinium,
which
contains
several
species
that
cause
debilitating
disease
decapod
crustaceans.
The
shore
crab
Carcinus
maenas
acts
as
a
mobile
reservoir
microparasites,
including
Hematodinium
sp.,
thereby
posing
risk
to
other
co-located
commercially
important
species,
e.g.
velvet
crabs
(Necora
puber).
Despite
widespread
prevalence
documented
seasonality
infection
dynamics,
there
knowledge
gap
regarding
host-pathogen
antibiosis,
namely,
how
avoids
host's
immune
defences.
Herein,
we
interrogated
Hematodinium-positive
Hematodinium-negative
for
extracellular
vesicle
(EV)
profiles
(a
proxy
cellular
communication),
alongside
proteomic
signatures
post-translational
citrullination/deimination
performed
by
arginine
deiminases,
can
infer
pathologic
state.
Circulating
EV
numbers
parasitized
were
reduced
significantly,
accompanied
smaller
modal
size
(albeit
non-significantly)
when
compared
controls.
Differences
observed
citrullinated/deiminated
target
proteins
between
control
crabs,
with
fewer
hits
identified
overall
former.
Three
deiminated
specific
actin,
Down
syndrome
cell
adhesion
molecule
(DSCAM),
nitric
oxide
synthase
–
factors
contribute
innate
immunity.
We
report,
first
time,
sp.
could
interfere
biogenesis,
protein
deimination
putative
mechanism
immune-modulation
crustacean-Hematodinium
interactions.
Journal of Pure and Applied Microbiology,
Journal Year:
2023,
Volume and Issue:
17(2), P. 722 - 731
Published: May 4, 2023
In
West
Bengal,
the
two
most
tradable
species
of
mud
crab
(Scylla
sp.)
are
available
due
to
high
market
demand
in
local
as
well
foreign
markets.
Scylla
sp.
is
an
important
(ecological,
nutritional,
and
economical)
bioresource
India
including
Bengal.
Juveniles
adult
crabs
selectively
collected
by
coastal
area
common
people
or
fisherpersons
for
culturing
ponds
traded
locally
internationally.
Different
districts’
mainly
North-24
Parganas,
South-24
Midnapur
inextricably
linked
being
culture
that
serves
their
alternative
occupation/livelihood.
Various
bacteria
recorded
related
infections.
Some
may
transmit
from
humans
cause
gastric-related
diseases
septicemia
transmission
virulent
genes
microbes
unsafe
water
then
humans.
Such
pathogenic
infections
like
vibriosis
without
proper
treatment
can
result
mass
mortality
The
potential
disease
has
been
demonstrated
a
number
significant
variables
surrounding
them.
Eating
raw
undercooked
crab,
ingesting
other
substances
contaminated
with
infected
excrement
mucus,
coming
into
touch
infectious
agent
through
open
wounds
contact
skin
scratches
abrasions
main
sources
bacterial
It
reported
transferred
consuming
organisms
handling
more
than
10%.
Crab
farmers,
general,
have
less
environmental
awareness,
scientific-based
knowledge
this
reason,
they
face
various
types
occupational
hazards
zoonotic
septicemia.
present
article
investigates
distribution
different
threats,
both
human
population.
