Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: April 25, 2025
Small
pelagic
fishes
(e.g.,
sardines,
anchovies
and
their
relatives)
are
preyed
upon
by
large
predatory
fishes,
birds
mammals,
thus,
key
species
in
marine
food
webs
with
respect
to
ecosystem
health
productivity.
However,
we
know
little
about
physiology,
such
information
will
be
critical
predicting
how
populations
may
impacted
human-induced
rapid
environmental
change
(HIREC)
implementing
effective
conservation
strategies.
As
a
first
step,
determined
the
maximum
swimming
speed,
aerobic
capacity
[maximum
metabolic
rate
(MMR)
scope
(AS)]
cost
of
transport
(COT;
energy
required
swim
given
distance)
scaled
sardines
(Harengula
jaguana)
collected
Eleuthera
(The
Bahamas).
The
sardine's
speed
(Ucrit)
was
~
5-6
body
length's
per
second,
this
agrees
data
on
free-swimming
schools
similar
wild.
they
had
unexpectedly
high
values
for
MMR
AS
(~
25%
70%
greater
than
tuna,
respectively),
COT.
These
findings
have
important
implications
regard
these
ecologically
potentially
respond
HIREC-related
challenges
as
increased
temperature
decreases
biomass
size
plankton
which
feed.
Frontiers in Marine Science,
Journal Year:
2021,
Volume and Issue:
8
Published: Aug. 23, 2021
Small
pelagic
fish
(SPF)
in
the
western
Mediterranean
Sea
are
key
elements
of
marine
food
web
and
important
terms
biomass
fisheries
catches.
Significant
declines
biomass,
landings,
changes
age/size
structure
sardine
Sardina
pilchardus
anchovy
Engraulis
encrasicolus
have
been
observed
recent
decades,
particularly
northern
area
Sea.
To
understand
different
patterns
SPF
populations,
we
analyzed
life
history
traits
[total
length
at
age,
maturity,
gonadosomatic
index
(GSI),
body
condition
(Kn)]
collected
between
2003
2017,
from
fishing
harbors
distributed
along
a
latitudinal
gradient
to
southern
Spain.
We
used
Generalized
Linear
Models
(GLM)
estimate
maturity
Additive
(GAMs)
test
relationship
with
environmental
variables
(seawater
temperature,
water
currents,
net
primary
productivity).
The
both
species
presented
seasonal,
interannual
differences
clear
decline
first
condition,
for
part
study
area.
In
part,
on
contrary,
did
not
present
temporal
trend.
conditions
partially
explained
long-term
traits,
but
selected
differed
areas,
highlighting
importance
regional
oceanographic
dynamics
small
fish.
truncated
length-at-age
pattern
disappearance
larger
individuals
population
could
contributed
poor
populations
years.
south
area,
were
be
possible
sign
future
declines.
This
highlights
understanding
trade-off
energy
invested
reproduction,
maintenance
growth
seasonal
level
advance
our
knowledge
how
human
pressures
influence
local
scales.
Journal of Zoology and Systematics,
Journal Year:
2023,
Volume and Issue:
1(2), P. 1 - 12
Published: Nov. 2, 2023
Environmental
factors,
including
temperature,
pH,
salinity,
and
dissolved
oxygen,
are
paramount
in
shaping
fish
physiology,
behavior,
survival.
Fish,
being
highly
responsive
to
these
environmental
shifts,
undergo
profound
changes
metabolism,
growth,
overall
performance.
Specifically,
temperature
variations
can
have
acute
or
long-term
effects,
pH
disrupt
ion
balance
respiratory
efficiency,
salinity
affects
osmoregulation
dynamics,
oxygen
levels
fundamental
for
respiration
metabolic
health.
Understanding
intricacies
is
not
just
academic;
it's
crucial
fisheries
management,
conservation
strategies,
anticipating
the
ramifications
of
broader
alterations.
This
review
offers
an
in-depth
analysis
impacts
on
fish,
underscoring
significance
each
factor
their
adaptive
behaviors,
ecological
context.
The Science of The Total Environment,
Journal Year:
2021,
Volume and Issue:
804, P. 150167 - 150167
Published: Sept. 8, 2021
Climate
change
often
leads
to
shifts
in
the
distribution
of
small
pelagic
fish,
likely
by
changing
match-mismatch
dynamics
between
these
sensitive
species
within
their
environmental
optima.
Using
present-day
habitat
suitability,
we
projected
how
different
scenarios
climate
(IPCC
Representative
Concentration
Pathways
2.6,
4.5
and
8.5)
may
alter
large
scale
European
sardine
Sardina
pilchardus
(a
model
species)
2050
2100.
We
evaluated
variability
species-specific
optima
allowing
a
comparison
future
scenarios.
Regardless
scenario,
sea
surface
temperature
salinity
interaction
current
velocity
distance
nearest
coast
were
main
descriptors
responsible
for
effects
on
sardine's
distribution.
Present-day
potential
"hotspots"
neritic
zones
(<250
km)
with
water
currents
<0.4
m
s-1,
where
SST
was
10
22
°C
SSS
>
20
(PSU),
average.
Most
among
climatic
habitats
moderate
low
suitability.
By
end
this
century,
suitability
increase
Canary
Islands,
Iberian
Peninsula,
central
North
Sea,
northern
Mediterranean,
eastern
Black
Sea
decrease
Atlantic
African
coast,
southwest
English
Channel,
Western
U.K.
A
gradual
poleward-eastward
shift
also
This
most
pronounced
2100
under
RCP
8.5.
In
that
sardines
had
9.6%
range
expansion
which
included
waters
along
entire
Norway
up
into
White
Sea.
As
is
mediated
synergic
fitness,
it
critical
apply
models
robust
underlying
species-habitat
data
integrate
knowledge
full
processes
shaping
productivity
Molecular Ecology,
Journal Year:
2023,
Volume and Issue:
32(7), P. 1608 - 1628
Published: Jan. 3, 2023
Abstract
By
evaluating
genetic
variation
across
the
entire
genome,
one
can
address
existing
questions
in
a
novel
way
while
raising
new
ones.
The
latter
includes
how
different
local
environments
influence
adaptive
and
neutral
genomic
within
among
populations,
providing
insights
into
adaptation
of
natural
populations
their
responses
to
global
change.
Here,
under
seascape
approach,
ddRAD
data
4609
single
nucleotide
polymorphisms
(SNPs)
from
398
sardines
(
Sardina
pilchardus
)
collected
11
Mediterranean
Atlantic
site
were
generated.
These
used
along
with
oceanographic
ecological
information
detect
signals
divergence
gene
flow
environmental
gradients.
studied
constitute
two
clusters
F
ST
=
0.07),
pattern
attributed
outlier
loci,
highlighting
putative
adaptation.
trend
number
days
sea
surface
temperature
above
19°C,
critical
threshold
for
successful
sardine
spawning,
was
crucial
at
all
levels
population
structuring
implications
on
species'
key
biological
processes.
Outliers
link
candidate
SNPs
region's
heterogeneity.
Our
findings
provide
evidence
dynamic
equilibrium
which
structure
is
maintained
by
physical
factors
opposing
influences
migration
selection.
This
system
warrants
continuous
monitoring
approach
that
might
benefit
temporal
more
detailed
spatial
dimension.
results
may
contribute
complementary
studies
aimed
deeper
mechanistic
processes
underlying
structuring.
Those
are
understanding
predicting
future
changes
this
highly
exploited
species
face
climate
Parasitology,
Journal Year:
2023,
Volume and Issue:
150(12), P. 1139 - 1157
Published: Oct. 1, 2023
The
Mediterranean
Sea
is
recognized
as
a
marine
biodiversity
hotspot.
This
enclosed
basin
facing
several
anthropogenic-driven
threats,
such
seawater
warming,
pollution,
overfishing,
bycatch,
intense
maritime
transport
and
invasion
by
alien
species.
present
review
focuses
on
the
diversity
ecology
of
specific
trophically
transmitted
helminth
endoparasites
(TTHs)
ecosystems,
aiming
to
elucidate
their
potential
effectiveness
‘sentinels’
anthropogenic
disturbances
in
environment.
chosen
TTHs
comprise
cestodes
nematodes
sharing
complex
life
cycles,
involving
organisms
from
coastal
mid/upper-trophic
levels
definitive
hosts.
Anthropogenic
directly
impacting
free-living
stages
parasites
host
population
demographies
can
significantly
alter
distribution,
infection
intraspecific
genetic
variability
these
TTHs.
Estimating
parameters
provide
valuable
information
assess
stability
trophic
food
webs.
Changes
distribution
particular
species
also
serve
indicators
sea
temperature
variations
Sea,
well
bioaccumulation
pollutants.
contribution
monitor
changes
using
measurable
attributes
at
both
spatial
temporal
scales,
proposed.
Ecology and Society,
Journal Year:
2024,
Volume and Issue:
29(1)
Published: Jan. 1, 2024
In
this
paper,
we
employ
a
"doughnut"
economic
approach
to
comprehensively
assess
the
state
of
purse-seiners
fisheries
sector
in
northwestern
Mediterranean
Sea.
The
analysis
identifies
several
instances
ecological
overshooting
and
shortages
basic
social
needs,
indicating
that
current
situation
is,
many
respects,
far
from
being
secure,
ecologically
safe,
socially
just
space.
It
demonstrates
necessary
transition
achieve
sustainable
is
not
solely
technical
or
financial
issue;
it
also
requires
sufficient
capabilities
lead
manage
process,
taking
into
consideration
context
which
would
occur.
Our
assessment
indicates
need
for
urgent
action
an
overarching
plan
includes
ecosystem-based
fishery
management
plan,
including
commercial
plans.
study
showcases
useful
providing
valuable
information
support
toward
sustainability.
Moreover,
utilizing
non-fisheries-specific
framework
can
facilitate
participation
expertise
broader
discussions
about
socioeconomic
changes
needed
post-growth-oriented
blue
economy.