Effects of salinity on desiccation resistance in supratidal beetles: cross-tolerance or cross-susceptibility?
Estuarine Coastal and Shelf Science,
Год журнала:
2025,
Номер
unknown, С. 109131 - 109131
Опубликована: Янв. 1, 2025
Язык: Английский
Fine-scale niche differences allow the co-existence of congeneric aquatic beetles in supratidal rockpools
Hydrobiologia,
Год журнала:
2023,
Номер
851(3), С. 471 - 485
Опубликована: Авг. 11, 2023
Abstract
Here
we
focused
on
the
co-occurrence
pattern
regional
and
local
scales,
niche
differences
of
two
species
congeneric
beetles
(
Ochthebius
quadricollis
O.
lejolisii
,
Hydraenidae)
exclusive
supratidal
rockpools.
Abundances
adults
larval
stages
from
both
environmental
variables
were
obtained
in
10
pools
12
localities
along
Iberian
Mediterranean
coast.
To
determine
co-existence
pattern,
monthly
sampled
an
annual
cycle.
On
found
negative
correlations
between
species’
pool
abundances,
which
suggest
spatio-temporal
segregation
based
their
different
responses.
The
OMI
analysis
detected
interspecific
differences,
larger
larvae
than
adults.
best
regression
models
for
included
depth,
conductivity,
fine
sediments
as
main
explanatory
with
a
positive
effect,
distance
to
sea
CPOM
effect.
For
larvae,
periphyton
effects,
while
area,
depth
conductivity
negatively
affected.
Our
results
that
subtle
ecological
niches,
mainly
those
related
hydroperiod
salinity,
could
storage
effects
principal
mechanisms
scales.
Язык: Английский
Oceanic currents maintain the genetic structure of non-marine coastal taxa in the western Mediterranean Sea
npj Biodiversity,
Год журнала:
2023,
Номер
2(1)
Опубликована: Ноя. 20, 2023
Coastal
habitats
are
amongst
the
most
dynamic
on
Earth,
due
to
their
simultaneous
exposure
terrestrial,
oceanic
and
atmospheric
processes.
taxa
therefore
often
ecologically
specialised
adapted
withstand
frequent
shifts
in
sea
level,
wave
exposure,
temperature
or
salinity.
This
specialisation
resulting
significant
cryptic
diversity.
Previous
molecular
studies
have
suggested
that
genetic
differentiation
non-marine
coastal
organisms
may
be
influenced
by
currents
fronts,
but
extent
which
such
processes
affect
dispersal
evolution
of
remains
unclear.
Here
we
explore
whether
population
structure
two
supralittoral
rockpool
beetle
species
(genus
Ochthebius)
can
predicted
from
general
circulation
pattern
marine
associated
fronts.
We
simulated
using
a
Lagrangian
particle
tracking
model
compared
this
with
inferred
COI
(mitochondrial)
wingless
(nuclear)
genes
applying
linear
models
Mantel
tests.
show
biophysical
based
fronts
western
Mediterranean
Sea
is
much
better
predictor
observed
than
isolation
distance
both
species.
Our
results
processes,
besides
shaping
contemporary
connectivity
fully
organisms,
also
exert
meaningful
influence
terrestrially-derived
as
beetles
-
first
time
mode
has
been
demonstrated
an
insect.
Язык: Английский
Testing metabolic cold adaptation and the climatic variability hypothesis in two latitudinally distant populations of a supratidal water beetle
Journal of Thermal Biology,
Год журнала:
2024,
Номер
123, С. 103934 - 103934
Опубликована: Июль 1, 2024
Temperature
significantly
impacts
ectotherm
physiology,
with
thermal
tolerance
and
metabolic
traits
typically
varying
latitude
across
species
ranges.
The
drivers
of
this
variation
remain
unclear,
however,
despite
obvious
consequences
for
population
persistence
conservation
in
the
face
ongoing
global
change.
This
study
explored
local
adaptation
phenotypic
plasticity
rates
limits
supratidal
rockpool
beetle
Ochthebius
lejolisii.
Using
populations
from
localities
at
different
ends
range
that
experience
contrasting
variability,
we
simultaneously
tested
two
major
paradigms
spatial
physiological
ecology:
cold
(MCA)
climatic
variability
hypothesis
(CVH).
Reciprocal
acclimation
was
conducted
under
spring
temperature
regimes
both
localities,
incorporating
diurnal
variation.
Metabolic
were
measured
by
closed
respirometry,
estimated
through
thermography.
In
line
MCA,
higher-latitude
(colder
climate)
showed
higher
coefficients
(Q
Язык: Английский
Novel Microsatellite Loci, Cross-Species Validation of Multiplex Assays, and By-Catch Mitochondrial Genomes on Ochthebius Beetles from Supratidal Rockpools
Insects,
Год журнала:
2023,
Номер
14(11), С. 881 - 881
Опубликована: Ноя. 15, 2023
Here
we
focus
on
designing,
for
the
first
time,
microsatellite
markers
evolutionary
and
ecological
research
aquatic
beetles
from
genus
Ochthebius
(Coleoptera,
Hydraenidae).
Some
of
these
non-model
species,
with
high
cryptic
diversity,
exclusively
inhabit
supratidal
rockpools,
extreme
highly
dynamic
habitats
important
anthropogenic
threats.
We
analysed
15
individuals
four
species
(O.
lejolisii,
O.
subinteger,
celatus,
quadricollis)
across
10
localities
Mediterranean
coasts
Spain
Malta.
Using
next-generation
sequencing
technology,
two
libraries
were
constructed
to
interpret
subgenera
present
consistently
(Ochthebius
s.
str.,
quadricollis;
Cobalius,
rest
species).
Finally,
20
(10
each
subgenus)
obtained
successfully
tested
by
cross-validation
in
under
study.
As
a
by-catch,
could
retrieve
complete
mitochondrial
genomes
quadricollis,
subinteger.
Interestingly,
genome
quadricollis
exhibited
genetic
variability
compared
already
published
data.
The
novel
SSR
panels
will
be
valuable
future
identification,
structure,
population
connectivity
threatened
such
as
coastal
rockpools.
Язык: Английский
A new species of Ochthebius ( Cobalius ) (Coleoptera: Hydraenidae: Ochthebiinae) inhabiting marine rockpools of NW Sicily
The European Zoological Journal,
Год журнала:
2023,
Номер
90(2), С. 790 - 799
Опубликована: Ноя. 14, 2023
Here
we
describe
a
new
species
of
Ochthebius
(Cobalius)
from
marine
rockpools
NW
Sicily:
O.
(C.)
senczuki
sp.
n.
This
was
first
discovered
on
the
basis
molecular
evidence,
but
its
taxonomic
distinction
has
been
subsequently
supported
by
morphological
characters.
shows
clear
genetic
diversity
known
related
species,
with
an
average
COI
p
distance
ranging
5.6%
to
10.7%;
it
exhibits
only
small
differences,
mostly
limited
dorsal
punctation,
pronotal
and
elytral
outer
edge,
(in
males)
mobile
part
median
lobe
aedeagus.
The
origin
is
estimated
lie
in
Late
Miocene
(~9
Mya);
ancestors
this
taxon
probably
remained
isolated
populations
taxa
subinteger
adriaticus
complexes
during
cycles
regressive
transgressive
phases
that
occurred
SW
Mediterranean
Pliocene.
detailed
state
art
members
complex
throughout
Central
Eastern
rocky
coastal
areas
also
preliminarily
discussed.
Язык: Английский