bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2023,
Номер
unknown
Опубликована: Ноя. 29, 2023
Abstract
The
sighting
of
giant
bivalves
and
tubeworms
at
the
Rose
Garden
vent
field
on
Galápagos
Rift
in
1977
marked
discovery
hydrothermal
vents,
a
turning
point
for
modern
biology.
following
decade
saw
flurry
taxonomic
descriptions
endemic
species
from
first
vents.
With
finding
high-temperature
‘black
smokers’
East
Pacific
Rise,
exploration
shifted
away
Galápagos.
A
faunal
list
vents
with
65
was
published
1991,
then
updated
to
74
2006.
Since
then,
few
expeditions
returned
Rift.
Here,
we
revisited
several
including
recently
confirmed
sites
inactive
sulfide
mounds.
From
our
collecting
efforts
observations,
as
well
revisions
literature,
update
92
15
new
records,
restricted
obvious
associates.
Accurate
regional
lists
are
important
understanding
biogeography
fauna,
will
also
be
valuable
setting
management
strategies.
The Innovation Geoscience,
Год журнала:
2023,
Номер
1(2), С. 100019 - 100019
Опубликована: Янв. 1, 2023
<p>Deep-sea
chemosynthetic
communities,
including
hydrothermal
vents
and
cold
seeps,
harbour
hundreds
of
endemic
species
currently
threatened
by
deep-sea
mining
hydrocarbon
extraction.
The
South
China
Sea
(SCS),
a
semi-enclosed
marginal
sea
with
two
well-investigated
active
seeps
(Haima
in
the
west
Site
F
east),
provides
an
opportunity
to
understand
biogeography
ecosystems.
Here,
we
conducted
extensive
field
surveys
using
Remotely
Operated
Vehicles
(ROVs)
collected
specimens
for
morphological
observations,
molecular
barcoding,
phylogenetic
analysis,
stable
isotope
analysis.
Cluster
analyses
were
applied
reveal
community
structure
Western
Pacific
Northern
Indian
Ocean.
A
total
65
covering
seven
phyla
14
classes
have
been
identified
from
Haima,
doubling
number
reported
previously.
Among
them,
35
are
known
only
Haima.
Stable
analysis
shows
typical
chemosynthesis-based
biological
community.
Community
at
genus
level
clustered
Haima
F,
though
compositions
dominance
fairly
distinct.
Between
SCS,
higher
richness
endemism
potentially
due
multiple
factors,
unique
environmental
factors
there
geographic
isolation
northwestern
corner
SCS.
Moreover,
similarity
between
SCS
North
Ocean
was
revealed,
mediated
Early
Pliocene
opening
Indonesian
islands
strong
westward
Indonesia
Throughflow.
Given
ongoing
gas
hydrate
exploration
activities
our
results
will
contribute
establishing
global
network
marine
protected
areas
chemosynthetic-based
rich
biodiversity
calls
policymakers
formulate
regulations
conserve
there.</p>
Diversity and Distributions,
Год журнала:
2023,
Номер
30(2)
Опубликована: Ноя. 29, 2023
Abstract
Aim
Deep‐sea
hydrothermal
vent
habitats
support
a
low‐diversity
fauna
in
which
most
species
are
unique
to
the
ecosystem.
To
inform
conservation
planning
around
this
vulnerable
marine
ecosystem,
we
examine
distributions
over
wide
area
assess
underlying
beta‐diversity
components
and
biogeographic
patterns.
We
concept
of
highly
connected
that
would
repopulate
areas
local
extinction
from
distal
locations.
Location
Western
Pacific
Ocean
Japan
New
Zealand.
Methods
assemble
database
295
confirmed
records
for
11
western
systems.
The
SET
framework
supports
query
distribution
pairwise
pattern
comparisons
among
build
network
based
graph
theory
connectivity
systems
on
shared
similarity.
A
bipartite
revealed
relative
role
each
linkages
system
nodes.
importance
sampling
bias
distance
between
Results
Overall,
two‐thirds
taxa
restricted
single
basin
or
arc.
Mariana
Trough
has
highest
corrected
weighted
endemism
vent‐specific
species,
followed
by
Okinawa
Trough.
Species
replacement
is
dominant
feature
beta‐diversity.
Eleven
form
seven
modules
with
stronger
Southwest
than
Northwest
Pacific.
Manus
Basin
emerges
as
‘hub’
reflecting
its
central
geographic
near
equator.
Main
Conclusion
Two
provinces
arise,
north
south
equator
few
transcend.
Local
regional
plans
should
consider
low
high
management
ecosystems
event
seabed
mining.
recruitment
unlikely
transcend
boundaries.
identify
Trough,
Basin,
Feni‐Tabar
Arc
Kermadec
development
initiate
expand
protection.
Ecology and Evolution,
Год журнала:
2022,
Номер
12(12)
Опубликована: Дек. 1, 2022
The
distribution
of
species
among
spatially
isolated
habitat
patches
supports
regional
biodiversity
and
stability,
so
understanding
the
underlying
processes
structure
is
a
key
target
conservation.
Although
multivariate
statistics
can
infer
connectivity
driving
distribution,
such
as
dispersal
suitability,
they
rarely
explore
structure.
Methods
from
graph
theory,
applied
to
data,
give
insights
into
both
pathways
by
intuitively
formatting
data
network
patches.
We
apply
these
methods
empirical
hydrothermal
vent
habitats
Northwest
Pacific.
Hydrothermal
vents
are
"oases"
biological
productivity
endemicity
on
seafloor
that
imminently
threatened
anthropogenic
disturbances
with
unknown
consequences
biodiversity.
Here,
we
describe
assemblage
networks
at
vents,
how
local
parameters
affect
their
structure,
implications
for
Two
complementary
were
formed
an
extensive
dataset:
similarity
site
nodes
linked
weighted
edges
based
pairwise
bipartite
which
present.
Using
networks,
assessed
role
individual
sites
in
maintaining
identified
biogeographic
sub-regions.
three
sub-regions
two
outlying
separated
spatial
arrangement
environmental
filters.
Both
detected
play
disproportionately
important
pathways,
while
also
distinct
assemblages
These
provide
historical
colonization
routes,
sub-regional
value
when
selecting
conservation
and/or
estimating
multivent
impacts
proposed
deep-sea
mining.
Zootaxa,
Год журнала:
2024,
Номер
5406(4), С. 501 - 518
Опубликована: Фев. 7, 2024
A
new
species
of
alvinocaridid
shrimp
is
reported,
from
the
Northwest
Eifuku
hydrothermal
vent
field
at
16191667
m
depth
on
Mariana
Arc.
comprehensive
phylogenetic
reconstruction
Alvinocarididae
based
mitochondrial
cytochrome
c
oxidase
subunit
I
(COI)
gene
including
this
reveals
paraphyly
genus
Rimicaris
Williams
&
Rona,
1986
with
four
other
generaAlvinocaridinides,
Manuscaris,
Opaepele,
and
Shinkaicarisnested
within
it.
We
re-examine
material
these
problematic
genera,
synonymise
them
under
whose
diagnosis
has
been
amended,
in
order
to
maintain
a
monophyletic
Rimicaris.
Our
species,
cambonae
sp.
nov.
genetically
close
loihi
(Williams
Dobbs,
1995)
comb.
(previously
Opaepele
loihi)
which
it
co-occurs,
but
can
be
morphologically
distinguished
by
less
elevated
dorsal
surface
rostrum,
being
devoid
median
carina,
stronger
pterygostomial
tooth
carapace,
blunt
rather
than
acuminate
proximolateral
process
antennular
stylocerite.
Species
previously
assigned
above
listed,
synonymized
genera
are
also
discussed,
examined
for
three
key
species:
R.
loihi,
acuminata,
leurokolos.
Further,
Alvinocaridinides
formosa
Komai
Chan,
2010
Manuscaris
liui
Wang
Sha,
2016
leurokolos
(Kikuchi
Hashimoto,
2000)
acuminata
(Komai
Tsuchida,
2015)
nov.,
respectively.
Revised
diagnoses
presented
After
present
revision
revision,
now
consists
15
species.
Journal of the Marine Biological Association of the United Kingdom,
Год журнала:
2024,
Номер
104
Опубликована: Янв. 1, 2024
Abstract
Deep-sea
hydrothermal
vents
host
chemosynthesis-based
ecosystems
inhabited
chiefly
by
specially
adapted
animals
that
do
not
live
anywhere
else,
and
depth
has
been
shown
to
be
a
major
driver
of
species
composition
at
around
Japan.
Though
the
Ryukyu
region
in
southern
Japan
is
home
many
hot
vents,
only
two
–
Minami-Ensei
Knoll
Yoron
Hole
have
found
shallower
than
1000
m.
Here,
we
report
discovery
new
vent
field
on
Amami
Rift
northwest
off
Ōshima
630
m
deep.
A
total
29
macrofaunal
were
recorded
from
Rift,
including
19
specialists.
Comparison
across
three
shallow
revealed
shared
species,
highlighting
all
display
distinct
community
structure.
exhibits
zonation
patterns
generally
more
similar
Hole,
but
presence
key
taxa
such
as
sulphide
worm
Paralvinella
mussel
‘
Bathymodiolus
’
platifrons
well
absence
symbiotic
squat
lobster
Shinkaia
limpet
Lepetodrilus
exemplify
its
difference
with
Minami-Ensei.
Furthermore,
non-vent
specific
predators
seen
these
sites
completely
different.
Overall,
can
considered
unique
set
fauna,
warranting
future
research
mechanisms
shaping
disparate
diversity
between
nearby
The
unusual
geological
setting
converging
point
Okinawa
Trough
Arc
may
influence
fluid
chemistry
drive
differences.
Invertebrate Systematics,
Год журнала:
2025,
Номер
39(2)
Опубликована: Фев. 10, 2025
Delectopecten
is
a
small
genus
of
the
family
Pectinidae
(Bivalvia:
Pectinida)
that
remains
poorly
studied
in
terms
both
morphology
and
phylogeny.
Here,
we
describe
first
member
this
from
deep-sea
hydrothermal
vent
ecosystems,
D.
thermus
sp.
nov.,
based
on
morphological
investigations
molecular
analyses
specimen
collected
Higashi–Ensei
field
(962-m
depth)
northern
Okinawa
Trough.
Morphologically,
new
species
resembles
vancouverensis
gelatinosus
shell
size,
shape,
auricle
size
sculpture.
However,
nov.
can
be
distinguished
its
congeneric
(including
9
extant
12
fossil
species)
by
unequal
auricles
(the
anterior
one
being
larger
than
posterior),
inwardly
recurved
left
valve
large
byssal
notch
angle
~90°.
Comparisons
genetic
sequences
three
mitochondrial
nuclear
gene
fragments
supported
placement
Delectopecten.
Further
phylogenetic
using
these
markers
support
monophyletic
positioned
as
an
early
diverging
clade
Pectinidae.
Additionally,
mitogenome
was
assembled
annotated,
for
–
revealing
significant
divergences
order
compared
to
other
pectinids.
The
16S
rRNA
amplicon
analysis
gill
tissue
indicated
vent-dwelling
scallop
does
not
exhibit
symbiosis
with
chemosynthetic
bacteria.
A
key
all
known
provided
aid
identification
understudied
genus.
ZooBank:
urn:lsid:zoobank.org:pub:D3D5D4AD-EE39-49F0-9782-12A5D6752A67
Marine Biodiversity,
Год журнала:
2024,
Номер
54(2)
Опубликована: Фев. 15, 2024
The
sighting
of
giant
bivalves
and
tubeworms
at
the
Rose
Garden
vent
field
on
Galápagos
Rift
in
1977
marked
discovery
hydrothermal
vents,
a
turning
point
for
modern
biology.
following
decade
saw
flurry
taxonomic
descriptions
endemic
species
from
first
vents.
With
finding
high-temperature
"black
smokers"
East
Pacific
Rise,
exploration
shifted
away
Galápagos.
A
faunal
list
vents
with
65
was
published
1991,
then
updated
to
74
2006.
Since
then,
few
expeditions
returned
Rift.
Here,
we
revisited
several
including
recently
confirmed
sites
inactive
sulfide
mounds.
From
our
collecting
efforts
observations,
as
well
revisions
literature,
update
92
15
new
records,
restricted
obvious
associates.
Accurate
regional
lists
are
important
understanding
biogeography
fauna,
will
also
be
valuable
setting
management
strategies.
