bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2022,
Номер
unknown
Опубликована: Апрель 22, 2022
ABSTRACT
Tropical
islands
are
renowned
as
natural
laboratories
for
evolutionary
study.
Lineage
radiations
across
tropical
archipelagos
ideal
systems
investigating
how
colonization,
speciation,
and
extinction
processes
shape
biodiversity
patterns.
The
expansion
of
the
island
thrush
Indo-Pacific
represents
one
largest
yet
most
perplexing
any
songbird
species.
exhibits
a
complex
mosaic
pronounced
plumage
variation
its
range,
is
arguably
world’s
polytypic
bird.
It
sedentary
species
largely
restricted
to
mountain
forests,
it
has
colonized
vast
region
spanning
quarter
globe.
We
conducted
comprehensive
sampling
populations
obtained
genome-wide
SNP
data,
which
we
used
reconstruct
phylogeny,
population
structure,
gene
flow,
demographic
history.
evolved
from
migratory
Palearctic
ancestors
radiated
explosively
during
Pleistocene,
with
numerous
instances
flow
between
populations.
Its
bewildering
masks
biogeographically
intuitive
stepping
stone
colonization
path
Philippines
through
Greater
Sundas,
Wallacea
New
Guinea
Polynesia.
thrush’s
success
in
colonizing
mountains
can
be
understood
light
ancestral
mobility
adaptation
cool
climates;
however,
shifts
elevational
degree
apparent
dispersal
rates
eastern
part
range
raise
further
intriguing
questions
about
biology.
Zoologica Scripta,
Год журнала:
2022,
Номер
52(1), С. 1 - 16
Опубликована: Сен. 25, 2022
Abstract
Morphology
has
been
a
leading
taxonomic
guiding
light
to
systematists
for
the
last
couple
of
hundred
years.
However,
genetic
and
–
more
recently
genomic
revolution
have
produced
numerous
demonstrations
erroneous
classifications
that
were
based
on
labile
morphological
traits.
We
used
thousands
genome‐wide
markers
shed
evolutionary
dynamics
in
confusing
taxonomically
obscure
group
Asian
Cyornis
flycatchers.
Using
data,
we
corroborated
recent
findings
three
mitochrondrial
five
nuclear
genes
two
taxa
hainanus
klossi
which
previously
treated
as
separate
species
(
rubeculoides
,
respectively)
are
genomically
homogeneous
form
single
species,
C.
.
also
uncovered
novel
case
interbreeding
between
non‐sister
glaucicomans
illustrating
these
flycatchers'
ability
hybridise
marginal
situations
even
after
substantial
times
divergence.
Our
study
illustrates
how
loci
can
complicated
problems,
resulting
better
integration
phenotypic
genotypic
data.
Ibis,
Год журнала:
2022,
Номер
165(3), С. 808 - 816
Опубликована: Окт. 12, 2022
We
describe
a
new
species
of
Zosterops
white‐eye,
which
is
restricted
to
Wangi‐wangi,
single
island
roughly
155
km
2
in
the
Wakatobi
Archipelago,
Indonesia.
Informally
known
as
Wangi‐wangi
White‐eye,
highly
distinct
both
morphologically
and
genetically.
It
considerably
larger
body
bill
size
compared
with
other
regional
species.
The
White‐eye
remains
locally
common
but
its
habitat
dwindling.
Given
minute
area
occupancy
threat
from
bird
trade,
we
recommend
IUCN
status
Endangered.
G3 Genes Genomes Genetics,
Год журнала:
2022,
Номер
12(11)
Опубликована: Сен. 26, 2022
Abstract
Islands
are
natural
laboratories
for
studying
patterns
and
processes
of
evolution.
Research
on
island
endemic
birds
has
revealed
elevated
speciation
rates
rapid
phenotypic
evolution
in
several
groups
(e.g.
white-eyes,
Darwin’s
finches).
However,
understanding
the
evolutionary
behind
these
requires
an
how
genotypes
map
to
novel
phenotypes.
To
date,
there
few
high-quality
reference
genomes
species
found
islands.
Here,
we
sequence
genome
one
Ernst
Mayr’s
“great
speciators,”
collared
kingfisher
(Todiramphus
chloris
collaris).
Utilizing
high
molecular
weight
DNA
linked-read
sequencing
technology,
assembled
a
draft
with
highly
contiguous
scaffolds
(scaffold
N50
=
19
Mb).
Based
universal
single-copy
orthologs,
estimated
gene
space
completeness
96.6%
assembly.
The
population
demographic
history
analyses
reveal
distinct
pattern
contraction
expansion
size
throughout
Pleistocene.
Comparative
genomic
analysis
family
that
species-specific
rapidly
expanding
families
(relative
other
Coraciiformes)
mainly
involved
ErbB
signaling
pathway
focal
adhesion.
Todiramphus
kingfishers
species-rich
group
become
focus
research.
This
will
be
platform
future
taxonomic,
phylogeographic,
research
group.
For
example,
target
genes
enable
testing
changes
sensory
structures
associated
vision
taste
across
kingfishers.
bioRxiv (Cold Spring Harbor Laboratory),
Год журнала:
2024,
Номер
unknown
Опубликована: Март 13, 2024
Geographic
isolation
plays
a
pivotal
role
in
speciation
by
restricting
gene
flow
between
populations
through
distance
or
physical
barriers.
However,
the
process
is
complex,
influenced
interplay
dispersal
ability
and
geographic
isolation,
especially
“great
speciators”
–
bird
species
present
on
multiple
islands
that,
at
same
time,
have
many
subspecies.
Comparing
population
differentiation
both
continental
insular
settings
can
help
us
to
understand
importance
of
geographical
context
emergence
great
speciators.
The
highly
diverse
white-eye
family
Zosteropidae
includes
several
speciators,
including
silvereye
(
Zosterops
lateralis
)
which
consists
16
subspecies,
11
occurring
islands.
distribution
Australian
continent
numerous
southwest
Pacific
allows
explore
influence
different
forms
divergence.
To
do
this,
we
conducted
comprehensive
phylogenomic
analysis
compared
patterns
divergence
versus
populations.
We
estimate
that
lineage
emerged
approximately
1.5
million
years
ago,
followed
split
two
main
clades:
Southern
Melanesia
broader
South
(encompassing
Australia,
New
Zealand,
outlying
islands).
Continental
show
low
genetic
structure,
suggests
they
overcome
barriers
across
long
distances.
In
contrast,
most
island
are
structured
even
over
relatively
short
Divergence
statistics
further
support
idea
water
lead
higher
when
Our
results
indicate
promote
provide
an
empirical
example
conditions
result
The
songbird
trade
crisis
in
East
and
South
Asia
has
been
fuelled
by
high
demand,
driving
many
species
to
the
brink
of
extinction.
This
driven
desire
for
songbirds
as
pets,
singing
competitions
prayer
animal
release
led
overexploitation
numerous
introduction
spread
invasive
alien
diseases
novel
environments.
ability
identify
traded
efficiently
accurately
is
crucial
monitoring
bird
markets,
protecting
threatened
enforcing
wildlife
laws.
Citizen
scientists
can
make
major
contributions
these
conservation
efforts
but
may
be
constrained
difficulties
distinguishing
‘look‐alike’
markets.
To
address
this
challenge,
we
developed
a
deep
learning‐based
Artificial
Intelligence
(AI)
bioacoustic
tool
enable
citizen
end,
used
three
avian
vocalization
databases
access
data
15
morphologically
similar
White‐eye
(
Zosterops
)
that
are
commonly
Asian
Specifically,
employed
Inception
v3
pre‐trained
model
classify
ambient
sound
(i.e.
non‐bird
sound)
using
448
recordings
obtained.
We
converted
into
spectrogram
image
form)
eight
augmentation
methods
enhance
performance
AI
neural
network
through
training
validation.
found
recall,
precision
F1
score
increased
amount
increased,
resulting
up
91.6%
overall
accuracy
an
88.8%
identifying
focal
species.
Through
application
bioacoustics
learning,
approach
would
law
enforcement
officials
prohibited
species,
making
important
conservation.
Biology,
Год журнала:
2024,
Номер
13(8), С. 643 - 643
Опубликована: Авг. 22, 2024
A
secondary
contact
zone
(SCZ)
is
an
area
where
incipient
species
or
divergent
populations
may
meet,
mate,
and
hybridize.
Due
to
the
diverse
patterns
of
interspecific
hybridization,
SCZs
function
as
field
labs
for
illuminating
on-going
evolutionary
processes
speciation
establishment
reproductive
isolation.
Interspecific
hybridization
widely
present
in
avian
populations,
making
them
ideal
system
SCZ
studies.
This
review
exhaustively
summarizes
variations
unique
traits
within
(vocalization,
plumage,
beak,
migratory
traits)
various
movement
observed
previous
publications.
It
also
highlights
several
potential
future
research
directions
genomic
era,
such
relationship
between
phenotypic
differentiation
SCZs,
basis
trait
differentiation,
shared
by
multiple
species,
accurate
predictive
models
forecasting
movements
under
climate
change
human
disturbances.
aims
provide
a
more
comprehensive
understanding
offers
theoretical
foundation
conservation.