Frontiers in Marine Science,
Journal Year:
2024,
Volume and Issue:
11
Published: Nov. 20, 2024
Seahorses
(
Hippocampus
spp.;
Family
Syngnathidae)
are
mainly
targeted
by
Traditional
Chinese
Medicine,
curio
and
ornamental
trade,
as
dried
or
live
specimens.
Traceability
tools
may
help
fill
the
gaps
on
supply
chains,
securing
information
geographic
origin
identification
of
traded
Fin-clipping,
a
non-lethal
well-established
method
in
seahorse
research,
offers
potential
approach
to
trace
certify
aquaculture
these
flagship
species.
As
such,
this
study
aimed
investigate
existence
differences
isotopic
profiles
four
species
cultured
at
research
centers
located
southern
Portugal
northern
Spain,
well
between
guttulatus
sourced
from
two
centers,
wild
specimens
This
also
evaluated
combining
elemental
fingerprints
for
discrimination,
through
inductively
continuous-flow
isotope
ratio
mass
spectrometry
(IR-MS)
plasma
(ICP-MS).
Species
same
exhibited
similar
stable
composition
(δ
13
C
δ
15
N),
except
case
temperate
H.
which
differed
significantly
tropical
kuda
reidi
.
These
could
be
due
phylogenetic
dissimilarities
seawater
temperature.
The
N
allowed
discriminate
While
dorsal
fin
isotopes
alone
did
not
prove
reliable
tool
discrimination
different
species,
them
with
seahorses’
whole-body
successfully
preliminary
demonstrates
analyses
tracing
identification.
However,
further
should
performed
validate
findings
specimens,
particularly
those
illegal,
unreported
unregulated
(IUU)
fisheries
trade.
Journal of Analytical Atomic Spectrometry,
Journal Year:
2023,
Volume and Issue:
38(3), P. 496 - 577
Published: Jan. 1, 2023
This
review
discusses
developments
in
elemental
mass
spectrometry,
atomic
absorption,
emission
and
fluorescence,
XRF
LIBS,
as
applied
to
the
analysis
of
specimens
clinical
interest,
foods
beverages.
Sample
preparation
procedures
quality
assurance
are
also
included.
Animal Microbiome,
Journal Year:
2025,
Volume and Issue:
7(1)
Published: May 6, 2025
The
commercial
demand
for
small
pelagic
fish,
such
as
Atlantic
chub
mackerel
(Scomber
colias),
renders
them
susceptible
to
provenance
fraud.
Scomber
colias
specimens
intestinal
tract
bacteriome
from
five
distinct
fishing
areas
along
the
Portuguese
coastline
were
analyzed
by
4th-generation
sequencing.
Bacteria
diversity
indices
and
differential
abundance
revealed
dissimilarities
in
operational
taxonomic
unit
(OTU)
among
sites.
Random
forest-based
model
yielded
an
85%
accuracy
rate
attributing
sample
based
on
OTU
relative
abundance.
Further
refinement
of
microbial
features
using
Indicator
Species
Analysis,
Linear
Discriminant
Analysis
Effect
Size
(LEfSe)
Gini
scores
enabled
identification
3-5
bacterial
location
biomarkers
per
site.
sequences
linked
pathogenic
bacteria,
particularly
Center-North
Center-South
areas.
While
this
doesn't
imply
active
pathogens,
it
highlights
potential
public
health
concerns
complements
efforts
improve
seafood
microbiological
quality
traceability.
Journal of Food Science,
Journal Year:
2023,
Volume and Issue:
88(4), P. 1349 - 1364
Published: Feb. 15, 2023
The
high
demand
and
economic
relevance
of
cephalopods
make
them
prone
to
food
fraud,
including
related
harvest
location.
Therefore,
there
is
a
growing
need
develop
tools
unequivocally
confirm
their
capture
Cephalopod
beaks
are
nonedible,
making
this
material
ideal
for
traceability
studies
as
it
can
also
be
removed
without
loss
commodity
value.
Within
context,
common
octopus
(Octopus
vulgaris)
specimens
were
captured
in
five
fishing
areas
along
the
Portuguese
coast.
Untargeted
multi-elemental
total
X-ray
fluorescence
analysis
revealed
abundance
Ca,
Cl,
K,
Na,
S,
P,
concomitant
with
keratin
calcium
phosphate
nature
material.
We
tested
suite
discrimination
models
on
both
elemental
spectral
data,
where
elements
contributing
most
discriminate
location
typically
associated
diet
(As),
human-related
pressures
(Zn,
Se,
Mn),
or
geological
features
(P,
Mn,
Zn).
Among
six
different
chemometrics
approaches
used
classify
individuals
according
beaks'
element
concentration,
classification
trees
attained
accuracy
76.7%,
whilst
reducing
number
explanatory
variables
sample
highlighting
variable
importance
group
discrimination.
However,
using
further
improved
accuracy,
highest
87.3%
found
partial
least-squares
discriminant
analysis.
Ultimately,
analyses
nonedible
structures
such
provide
an
important,
complementary,
easily
accessible
means
support
seafood
provenance
traceability,
integrating
anthropogenic
and/or
gradients.
