Ultraviolet vision in anemonefish improves colour discrimination
Journal of Experimental Biology,
Год журнала:
2024,
Номер
227(7)
Опубликована: Апрель 1, 2024
ABSTRACT
In
many
animals,
ultraviolet
(UV)
vision
guides
navigation,
foraging,
and
communication,
but
few
studies
have
addressed
the
contribution
of
UV
signals
to
colour
vision,
or
measured
discrimination
thresholds
using
behavioural
experiments.
Here,
we
tested
in
an
anemonefish
(Amphiprion
ocellaris)
a
five-channel
(RGB-V-UV)
LED
display.
We
first
determined
that
maximal
sensitivity
A.
ocellaris
cone
was
∼386
nm
microspectrophotometry.
Three
additional
spectral
sensitivities
had
maxima
at
∼497,
515
∼535
nm.
then
behaviourally
by
training
distinguish
coloured
target
pixel
from
grey
distractor
pixels
varying
intensity.
Thresholds
were
calculated
for
nine
sets
colours
with
without
signals.
Using
tetrachromatic
model,
found
better
(i.e.
lower)
discriminating
when
higher
chromatic
contrast.
These
caused
greater
stimulation
relative
other
types.
findings
imply
component
cues
improves
their
detectability,
which
likely
increases
prominence
body
patterns
communication
silhouette
zooplankton
prey.
Язык: Английский
Damsels in Disguise: Development of Ultraviolet Sensitivity and Colour Patterns in Damselfishes (Pomacentridae)
Molecular Ecology,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 5, 2025
ABSTRACT
Damselfishes
(Pomacentridae)
are
widespread
and
highly
abundant
on
tropical
coral
reefs.
They
exhibit
diverse
body
colouration
within
between
the
~250
species
across
ontogenetic
stages.
In
addition
to
human‐visible
colours
(i.e.,
400–700
nm),
most
adult
damselfishes
reflect
ultraviolet
(UV,
300–400
nm)
colour
patches.
UV
sensitivity
signals
essential
for
feeding
form
basis
a
secret
communication
channel
invisible
many
UV‐blind
predatory
fish
reef;
however,
how
these
traits
develop
stages
their
distribution
damselfish
family
is
poorly
characterised.
Here,
we
used
photography,
phylogenetic
reconstructions
of
opsin
genes,
differential
gene
expression
analysis
(DGE)
retinal
samples
investigate
development
vision
patterns
in
three
(pre‐settlement
larval,
juvenile,
adult)
11
species.
Using
DGE,
found
similar
juveniles
adults,
which
strongly
differed
from
larvae.
All
all
expressed
at
least
one
UV‐sensitive
sws1
gene.
However,
only
started
appear
juvenile
stage.
Moreover,
Pomacentrus
displayed
complex
that
were
correlated
with
two
copies.
This
could
mean
some
can
discriminate
change
component.
We
demonstrate
dramatic
shifts
both
while
highlighting
importance
considering
ontogeny
when
studying
coevolution
visual
systems
signals.
Язык: Английский
Bioinspired Motion Perception Using the Wavelength-Sensitive Nonvolatile MoTe2 Homojunction
ACS Photonics,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 10, 2025
Язык: Английский
Damsels in a hidden colour: development of ultraviolet sensitivity and colour patterns in damselfishes (Pomacentridae)
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Авг. 23, 2024
Damselfishes
(Pomacentridae)
are
widespread
and
highly
abundant
on
tropical
coral
reefs.
They
exhibit
diverse
body
colouration
within
between
the
~250
species
across
ontogenetic
stages.
In
addition
to
human
visible
colours
(i.e.,
400-700
nm),
most
adult
damselfishes
reflect
ultraviolet
(UV,
300-400
nm)
colour
patches.
UV
sensitivity
signals
essential
for
feeding
form
basis
a
secret
communication
channel
invisible
many
UV-blind
predatory
fish
reef;
however,
how
these
traits
develop
stages,
their
distribution
damselfish
family
is
poorly
characterised.
Here,
we
used
photography,
phylogenetic
reconstructions
of
opsin
genes,
differential
gene
expression
analysis
(DGE)
retinal
samples,
investigate
development
vision
patterns
in
three
stages
(pre-settlement
larval,
juvenile,
adult)
eleven
species.
Using
DGE,
found
similar
juveniles
adults,
which
strongly
differed
from
larvae.
All
all
expressed
at
least
one
UV-sensitive
sws1
gene.
However,
only
started
appear
juvenile
stage.
Moreover,
Pomacentrus
displayed
complex
that
were
correlated
with
two
copies.
This
could
mean
some
can
discriminate
change
component.
We
demonstrate
dramatic
shifts
both
damselfish,
while
highlighting
importance
considering
ontogeny
when
studying
coevolution
visual
systems
signals.
Язык: Английский
Generation of the First Transgenic Line of the Iconic Coral Reef FishAmphiprion ocellaris
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Июнь 9, 2024
Abstract
The
common
clownfish,
Amphiprion
ocellaris
,
is
an
iconic
coral
reef
fish,
ubiquitous
in
the
marine
aquarium
hobby
and
useful
for
studying
a
variety
of
biological
processes
(e.g.,
mutual
symbiosis,
ultraviolet
vision,
protandrous
sex
change).
Recently,
CRISPR/Cas9
methods
were
developed
knocking
out
specific
genes
mechanistic
studies.
Here,
we
expand
genetic
toolkit
A.
by
creating
first
transgenic
line
using
Tol2
transposon
system.
Fertilized
eggs
co-injected
with
transposase
mRNA
plasmid
encoding
Elongation
factor
1
α
(
Ef1α
):
Green
fluorescent
protein
GFP)
cassette
at
various
concentrations,
needle
tip
dimensions
timepoints
post-fertilization.
We
compared
injection
parameters
sterilization
to
maximize
survival
injected
eggs.
F0s
(n=10)
that
genotyped
GFP+
then
raised
6
months
age
crossed
wild-type
(WT)
females
confirm
germline
transmission.
F1
offspring
also
same
manner.
highly
efficient
system
resulted
37%
rate
transgenesis
surviving
amounting
2.7%
yield
all
being
(n=
160).
Of
these,
10
adulthood,
8
spawned,
5/8
(62.5
%)
produced
offspring.
Further,
two
F1s
WT
53.8%
54.2%
respectively,
confirming
creation
stable
line.
This
is,
our
knowledge,
generation
any
fish.
ability
express
transgenes
interest
anemonefish
opens
door
new
era
exploration
into
their
fascinating
biology.
Язык: Английский
Generation of the First Transgenic Line of the Iconic Coral Reef Fish Amphiprion ocellaris
Research Square (Research Square),
Год журнала:
2024,
Номер
unknown
Опубликована: Июль 19, 2024
Abstract
The
common
clownfish,
Amphiprion
ocellaris,
is
an
iconic
coral
reef
fish,
ubiquitous
in
the
marine
aquarium
hobby
and
useful
for
studying
a
variety
of
biological
processes
(e.g.,
mutual
symbiosis,
ultraviolet
vision,
protandrous
sex
change).
Recently,
CRISPR/Cas9
methods
were
developed
knocking
out
specific
genes
mechanistic
studies.
Here,
we
expand
genetic
toolkit
A.
ocellaris
by
creating
first
transgenic
line
using
Tol2
transposon
system.
Fertilized
eggs
co-injected
with
transposase
mRNA
plasmid
encoding
Elongation
factor
1
α
(
Ef1α):
Green
fluorescent
protein
(
GFP)
cassette
at
various
concentrations,
needle
tip
dimensions
timepoints
post-fertilization.
We
compared
injection
parameters
sterilization
to
maximize
survival
injected
eggs.
F0s
(n
=
10)
that
genotyped
GFP
+
then
raised
6
months
age
crossed
wild-type
(WT)
females
confirm
germline
transmission.
F1
offspring
also
same
manner.
highly
efficient
system
resulted
37%
rate
transgenesis
surviving
amounting
2.7%
yield
all
being
GFP+
160).
Of
these,
10
adulthood,
8
spawned,
5/8
(62.5%)
produced
offspring.
Further,
two
F1s
WT
53.8%
54.2%
respectively,
confirming
creation
stable
line.
This
is,
our
knowledge,
generation
any
fish.
ability
express
transgenes
interest
anemonefish
opens
door
new
era
exploration
into
their
fascinating
biology.
Язык: Английский
Generation of the First Transgenic Line of the Iconic Coral Reef Fish Amphiprion ocellaris
Marine Biotechnology,
Год журнала:
2024,
Номер
26(5), С. 1067 - 1078
Опубликована: Авг. 19, 2024
Язык: Английский
Coral reef fish visual adaptations to a changing world
Functional Ecology,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 1, 2024
Abstract
Coral
reef
ecosystems
show
fluctuations
in
their
prevailing
light
environment
response
to
both
regular
(e.g.
between
seasons)
and
more
prevalent
stochastic
events
human‐induced
sediment
runoff).
In
these
shifting
environments,
phenotypic
plasticity
provides
an
essential
mechanism
for
coral
fishes
adjust
visual
capability
meet
changing
sensory
requirements.
Here,
we
evaluate
the
growing
area
of
research
that
highlights
many
genetic
ecological
mechanisms
affect
plastic
responses
fish
vision
environmental
cues.
With
increasing
number
disturbances
marine
environment,
it
is
critical
understand
extent
limits
under
natural
disturbed
conditions.
our
current
knowledge
drawing
upon
a
large
body
work
freshwater
fishes,
speculate
whether
can
adapt
changes
where
limitations
could
lie.
Whilst
have
shown
adaptations
different
degree
inconsistent
species.
Thus,
may
not
only
be
functionally
significant
maintaining
performance
visually
guided
behaviours
single
species
but,
broadly,
likely
key
sustaining
ecosystem
function.
Read
free
Plain
Language
Summary
this
article
on
Journal
blog.
Язык: Английский
Damsels in a Hidden Colour: Development of Ultraviolet Sensitivity and Colour Patterns in Damselfishes (Pomacentridae)
Опубликована: Окт. 8, 2024
Damselfishes
(Pomacentridae)
are
widespread
and
highly
abundant
on
tropical
coral
reefs.
They
exhibit
diverse
body
colouration
within
between
the
∼250
species
across
ontogenetic
stages.
In
addition
to
human
visible
colours
(i.e.,
400-700
nm),
most
adult
damselfishes
reflect
ultraviolet
(UV,
300-400
nm)
colour
patches.
UV
sensitivity
signals
essential
for
feeding
form
basis
a
secret
communication
channel
invisible
many
UV-blind
predatory
fish
reef;
however,
how
these
traits
develop
stages,
their
distribution
damselfish
family
is
poorly
characterised.
Here,
we
used
photography,
phylogenetic
reconstructions
of
opsin
genes,
differential
gene
expression
analysis
(DGE)
retinal
samples,
investigate
development
vision
patterns
in
three
stages
(pre-settlement
larval,
juvenile,
adult)
eleven
species.
Using
DGE,
found
similar
juveniles
adults,
which
strongly
differed
from
larvae.
All
all
expressed
at
least
one
UV-sensitive
_sws1_
gene.
However,
only
started
appear
juvenile
stage.
Moreover,
_Pomacentrus_
displayed
complex
that
were
correlated
with
two
copies.
This
could
mean
some
can
discriminate
change
component.
We
demonstrate
dramatic
shifts
both
damselfish,
while
highlighting
importance
considering
ontogeny
when
studying
coevolution
visual
systems
signals.
Язык: Английский