Marine Biodiversity,
Journal Year:
2024,
Volume and Issue:
54(6)
Published: Dec. 1, 2024
Abstract
Four
midwater-trawl
surveys
were
conducted
during
the
summers
of
2007–2009
and
spring
2010
to
document
meso-
bathypelagic
biodiversity
Gully
canyon.
These
collected
3871
cephalopods
at
least
38
species
in
22
families.
The
numerically
dominant
13
one
genus
together
comprised
90%
total
taken
standard
survey
sets.
Each
those
taxa
uses
a
different
way,
including
within-family
differences
for
two
cranchids
mastigoteuthids.
Oegopsids
note
include
Brachioteuthis
beanii
,
which
was
most
abundant
summer
but
entirely
absent
March.
cirrate
octopod
Stauroteuthis
syrtensis
large
numbers
(
n
=
142)
wide
range
sizes
(9–185
mm)
suggesting
it
may
complete
its
life
cycle
within
results
expand
understanding
trophic
structure
establish
baseline
future
monitoring
ecosystem
change.
Frontiers in Marine Science,
Journal Year:
2025,
Volume and Issue:
12
Published: Jan. 28, 2025
Introduction
Like
pelagic
fishes,
cephalopods
represent
fishery
resources
with
high
worldwide
potential
and
an
important
evolutionary
node
animal
group.
Thus,
exploring
the
spatial
seasonal
variations
in
cephalopod
distribution
their
associations
environmental
factors
is
for
elucidating
diversity
of
under
changing
conditions
developing
reasonable
resource
management
conservation
measures.
Methods
On
basis
trawl
survey
data
from
123
stations
coastal
waters
Zhejiang,
China,
spring
autumn
2021,
relationships
among
species
composition
characteristics
changes
were
investigated
via
relative
importance
index
(
IRI
),
alpha
index,
GAM.
Results
The
results
revealed
that
Zhejiang
belonged
to
three
orders,
six
families,
10
genera
dominant
gradually
replaced
by
minor
economic
endemic
small-scale
species.
In
spring,
Uroteuthis
duvaucelii
was
species,
density
southern
relatively
high,
overall
increased
northeast
southwest.
autumn,
U.
Abralia
multihamata
presented
two
high-density
areas
northern
central
waters,
lower
waters.
Analysis
low
community
diversity,
significant
differences
distributions.
GAM
that,
surface
dissolved
oxygen
sea
bottom
temperature
led
p
<0.05),
water
depth
significantly
affected
<0.01);
only
<0.01).
Discussion
are
dual
stresses
fishing
changes.
protection
restoration
traditional
needed
ensure
sustainable
development
utilization.
Diversity,
Journal Year:
2025,
Volume and Issue:
17(1), P. 43 - 43
Published: Jan. 9, 2025
This
work
describes
the
morphological
changes
during
embryonic
development
and
pre-hatching
organ
of
Octopus
hubbsorum,
a
species
with
paralarval
phase
in
its
life
cycle.
The
morphogenesis
O.
hubbsorum
begins
simultaneously
first
reversion,
typical
characteristic
octopuses,
along
shape
structure.
However,
this
hatches
only
three
well-developed
suckers.
Organogenesis
starts
after
eyes,
optic
lobes,
digestive
gland,
arms,
mantle.
branchial
central
hearts
show
optimal
before
second
reversion.
ink
sac
develops
late
stages
(after
reversion),
while
stomach
crop
are
evident
hatching
continue
to
develop
until
feeding.
Newly
hatched
organisms
complete
nervous,
respiratory,
circulatory,
integumentary
systems.
During
phase,
undergoes
major
physiological
it
reaches
subadult
reproductive
organs.
study
highlights
important
organogenic
differences
compared
planktonic
benthic
hatchlings.
Further
studies
needed
different
strategies
expand
our
knowledge
developmental
biology
cephalopods.
Animals,
Journal Year:
2024,
Volume and Issue:
14(6), P. 941 - 941
Published: March 19, 2024
Uroteuthis
edulis
(U.
edulis)
is
an
important
economic
loliginid
resource
in
the
East
China
Sea
(ECS).
Its
flexible
life
history
traits
enable
population
to
quickly
adapt
changes
habitat.
Understanding
early
transport
process
helps
us
grasp
habitat
requirements
of
populations
at
key
stages.
In
this
study,
particle
tracing
was
used
simulate
trajectories
(within
120
days).
The
gradient
forest
method
(GFM)
and
generalized
additive
mixed
models
(GAMMs)
were
analyze
environmental
variables
that
affect
impact
factors
on
process,
respectively.
results
showed
spring
stock
tracers
transported
northeast
release
area
(Pengjiayu
water)
Pacific
side
Japan.
Summer
north
(Zhoushan
island).
Current
velocity,
salinity,
temperature
affected
trace
element
ratios
Mixed-layer
depth
(MLD),
chlorophyll
a
concentration
(Chla)
for
summer
stock.
Zonal
velocity
positively
correlated
with
ratio
(0.14–0.16
m/s),
while
meridional
opposite
correlation.
physical
driving
mechanisms
Kuroshio
warm
current
(or
Taiwan
current)
Yangtze
River
determine
paralarva
retention
location
during
transportation.
differences
dominant
water
environment
may
physiological
functions
food
availability.
This
study
provides
scientific
basis
comprehensive
understanding
migration
characteristics
U.
different
stocks.
Neural Development,
Journal Year:
2024,
Volume and Issue:
19(1)
Published: June 21, 2024
Abstract
The
last
common
ancestor
of
cephalopods
and
vertebrates
lived
about
580
million
years
ago,
yet
coleoid
cephalopods,
comprising
squid,
cuttlefish
octopus,
have
evolved
an
extraordinary
behavioural
repertoire
that
includes
learned
behaviour
tool
utilization.
These
animals
also
developed
innovative
advanced
defence
mechanisms
such
as
camouflage
ink
release.
They
unique
life
cycles
possess
the
largest
invertebrate
nervous
systems.
Thus,
studying
provides
a
opportunity
to
gain
insights
into
evolution
development
large
centralised
As
non-model
species,
molecular
genetic
tools
are
still
limited.
However,
significant
already
been
gained
deconvolve
embryonic
brain
development.
Even
though
typical
molluscan
circumesophageal
bauplan
for
their
central
system,
aspects
its
reminiscent
processes
observed
in
well,
long-distance
neuronal
migration.
This
review
overview
cephalopod
research
focusing
on
cellular
neurogenesis,
migration
patterning.
Additionally,
we
summarize
recent
work
neural
cell
type
diversity
hatchling
brains.
We
conclude
by
highlighting
gaps
our
knowledge
routes
future
research.
