Small pelagic fish: new frontiers in ecological research
Marine Ecology Progress Series,
Journal Year:
2024,
Volume and Issue:
741, P. 1 - 6
Published: July 1, 2024
Populations
of
small
pelagic
fish
(SPF),
such
as
sardines,
anchovies
and
herrings,
support
some
the
largest
marine
fisheries
globally
are
critical
for
trophic
transfer
in
large
ecosystems
food
security,
particularly
low-
to
medium-income
countries.
Marked
changes
population
size,
shifts
distribution
on
multiple
time
scales,
impacts
their
populations
from
other
pressures
(e.g.
overfishing,
climate
change)
pose
challenges
sustainably
manage
these
resources
avoid
serious
socioeconomic
ecological
collapses.
The
ecology
management
SPF
was
discussed
an
international
symposium
Lisbon,
Portugal,
attracting
participants
38
countries
6
continents.
This
Theme
Section
includes
18
research
contributions
examining
different
regions
alongside
3
global
analyses.
These
studies,
including
a
wide
range
topics
parasitology,
behavior
trophodynamics
growth
spawning,
provide
important
new
knowledge
that
will
improve
science-based
advice
tools
needed
sustainable,
ecosystem-based
resources.
milestone
working
group
sowed
seeds
continued,
coordinated
efforts
role
complex
socio-ecological
systems.
Language: Английский
Worldwide Appraisal of Knowledge Gaps in the Space Usage of Small Pelagic Fish: Highlights Across Stock Uncertainties and Research Priorities
Reviews in Fisheries Science & Aquaculture,
Journal Year:
2025,
Volume and Issue:
unknown, P. 1 - 62
Published: Feb. 14, 2025
Understanding
the
spatial
structure
of
life
cycle
components
small
pelagic
fish
(SPF)
stocks
is
key
for
deciphering
population
dynamics
and
ensuring
sustainable
management.
The
extent
different
stages
ecologically
relevant
processes
(e.g.,
reproduction)
temporally
dynamic
responds
to
environmental,
genetic,
demographic
constraints.
Knowledge
gaps
on
within-stock
variability
SPF
worldwide
were
identified
clupeoid
(Clupeidae/Engraulidae).
From
3229
Web
Science-indexed
articles
reviewed,
data
systematically
extracted
from
299.
This
information
was
supplemented
with
another
105
documents
databases
official
surveys
stock
assessments.
Overall,
this
review
compiled
111
datasets
(77
stocks)
involving
17
assessed
or
commercially
species
across
19
Large
Marine
Ecosystems
(LMEs)
38
coastal
ecoregions.
Only
approximately
40%
used
in
study
covered
known
presumed
distribution
at
least
one
life-cycle
variable:
Adults
(feeding
area,
spawning
migration,
feeding
overwintering
presence/biomass),
juveniles
(presence/biomass,
nursery
area),
larvae
(larval
routes).
Despite
more
extensive
some
Eastern
Boundary
Upwelling
Systems
(EBUS)
long-managed
stocks,
important
remain
due
quality,
identity
ambiguity,
biases.
Key
could
be
existing
surveys,
but
there
various
limitations
access
spatiotemporal
coverage.
main
consequences
are
a
series
priority
research/monitoring
actions
recommended
mitigate
these
improve
our
ability
address
stocks.
Language: Английский
Larval trophic ecology of small pelagic fishes: a review of recent advances and pathways to fill remaining knowledge gaps
Marine Ecology Progress Series,
Journal Year:
2024,
Volume and Issue:
741, P. 127 - 143
Published: Feb. 8, 2024
Early
life
stages
constitute
a
bottleneck
for
most
fish
populations,
particularly
small
pelagic
(SPF),
which
the
interannual
variability
in
recruitment
strength
is
very
high,
and
recruits
frequently
bulk
of
population
biomass.
Finding
right
prey
(in
terms
size
quality)
during
these
early
critical
success.
In
this
work,
we
synthesize
available
literature
on
trophic
ecology
SPF,
clupeiforms.
Works
published
last
decade
(2013-2022,
37
papers)
were
compared
to
those
previously
(1920-2012,
107
papers).
Gut
content
analysis
field-caught
larvae
still
commonly
used
technique
(44%),
while
use
biomarkers
(e.g.
stable
isotopes
fatty
acid
composition),
molecular
tools
metabarcoding)
multitrophic
approaches
has
increased
decade.
Significant
new
knowledge
was
gained
recently,
such
as
that
larval
feeding
rates
behavior
through
laboratory
experiments
species
kept
culture
Atlantic
herring,
Pacific
sardines),
but
some
old
challenges
remain,
high
vacuity
larvae.
Lastly,
provide
recommendations
future
studies,
complementary
techniques,
importance
studying
ontogenetic
shifts,
metabarcoding
analyzing
diet
depend
microplankton,
identification
with
taxonomic
resolution.
Such
studies
are
essential
better
understand
growth
survival
at
sea,
thus
predict
SPF
dynamics.
Language: Английский
Fisheries shocks provide an opportunity to reveal multiple recruitment sources of sardine in the Sea of Japan
Scientific Reports,
Journal Year:
2024,
Volume and Issue:
14(1)
Published: Sept. 17, 2024
Abstract
The
abrupt
decline
in
sardine
catches
the
Sea
of
Japan
and
East
China
(SJ-ECS)
2014
2019
recovery
following
years
call
into
question
current
assumption
that
sardines
SJ-ECS
form
a
self-recruiting
subpopulation.
To
test
this
hypothesis,
we
analysed
otolith
stable
oxygen
carbon
isotope
profiles
(
δ
18
O,
13
C)
age-0
age-1
from
2010
2013–2015
year-classes
captured
SJ-ECS,
as
geographic
markers
for
nursery
areas.
Age-0
generally
showed
significant
ontogenetic
decrease
O
larval
to
juvenile
stages.
However,
majority
spring
2011,
2015
2016
non-decreasing
profiles,
suggesting
off
Japanese
coast
were
not
main
source
recruitment.
Different
migration
groups
thus
indicated:
“locals”
growing
up
migrating
“nonlocals”.
“nonlocals”
overlapped
with
those
subarctic
North
Pacific,
they
may
be
migrants
or
perhaps
an
unobserved
northward
group
SJ-ECS.
Our
results
highlight
considerable
uncertainty
population
structure
assumed
stock
assessment
models
sardine.
Language: Английский