Biological Journal of the Linnean Society,
Journal Year:
2024,
Volume and Issue:
143(4)
Published: Nov. 26, 2024
Abstract
Here,
we
aimed
to
assess
the
role
of
historical
(climate
events)
and
current
geographical
ecological
features
in
evolutionary
history
a
clade
New
World
jays.
Using
an
ellipsoid-based
approach
relying
on
environmental
climatic
layers
occurrence
data,
tested
whether
closely
related
taxa
Cyanocorax
colliei
+
C.
formosus
morio
occupy
ecologically
different
spaces
throughout
their
mostly
allopatric
distribution
semihomogeneous
landscape,
they
have
been
influenced
by
similar
processes
given
context
Mesoamerican
lowland
tropical
forests.
We
reconstructed
palaeo-distributions
effects
climate
shifts
patterns
distribution.
Additionally,
importance
areas
that
could
function
as
barriers
between
taxa.
Our
results
at
species
level
show
evidence
for
niche
divergence
two
three
pairs.
Geographical
transferences
(areas
suitability
inferred
model)
seem
good
explanatory
power
subspecies
variation.
At
level,
find
no
divergence;
observed
parapatric
distributions
instead
associated
with
differences
limiting
connection
populations
requirements.
Global Change Biology,
Journal Year:
2025,
Volume and Issue:
31(3)
Published: March 1, 2025
Climate
change
poses
a
significant
threat
to
the
survival
of
many
species.
Although
protected
areas
can
slow
down
biodiversity
loss,
they
often
lack
systematic
planning
and
do
not
integrate
genetic
diversity.
Genetic
diversity
is
key
prerequisite
for
species
ability
tolerate
new
conditions.
Using
population
distribution
data
from
96
plant
in
Third
Pole
(encompassing
Tibetan
Plateau
adjacent
mountains),
we
mapped
patterns
diversity,
projected
climate-driven
range
dynamics
future
erosion,
designed
an
optimal
conservation
framework
region.
We
identified
several
patches
high
haplotype
(HD),
with
relatively
number
haplotypes
southeastern
Pole.
Regression
models
revealed
that
climate
topography
have
interacted
shape
latitude
precipitation
being
best
predictors
HD
cpDNA
nrDNA,
respectively.
Ecological
niche
modeling
predicted
approximate
43
km
northwestward
86
m
upward
shift
suitable
habitats
under
scenarios,
likely
leading
loss
up
13.19%
15.49%
nrDNA
Alarmingly,
71.20%
newly
priority
fall
outside
existing
planned
National
Park
Clusters.
Therefore,
recommend
expanding
network
by
2.02
×
105
km2
(5.91%)
Pole,
increasing
total
conserved
area
1.36
106
(39.93%)
effectively
preserve
evolutionary
potential
plants.
This
study
represents
innovative
attempt
incorporate
into
efforts.
Acta Botanica Mexicana,
Journal Year:
2025,
Volume and Issue:
132
Published: April 13, 2025
Background
and
Aims:
Mistletoe
seeds
germinate
readily
after
being
removed
from
the
exocarp
by
seed
dispersers.
While
consequences
of
directed
bird
dispersal
perspective
mistletoe-bird
mutualistic
interactions
are
well-studied,
effects
fruit
size
variation
on
germination
processes
have
received
limited
attention.
Here
we
investigated
different
phases
manually
attached
a
Psittacanthus
mistletoe,
attachment
to
early
haustorial
formation,
better
understand
process
unit
(embryo
cotyledons).
Methods:
We
collected
fully
developed
ripe
fruits
mayanus
(Loranthaceae)
mistletoe
plants
growing
Lysiloma
divaricatum
(Fabaceae)
host
trees,
measured
(length
width
length
cupular
pedicels),
weighed,
then
used
them
in
experiment.
For
this
experiment,
placed
squashed
wooden
rectangle
sticks,
securing
with
their
own
viscin.
Seeds
were
monitored
daily
for
100
days
under
common
environmental
conditions.
Key
results:
showed
high
rate,
completing
just
two
weeks
average.
Germination
was
asynchronous
among
seeds,
considerable
time
each
took
germinate.
Among
morphological
characteristics
evaluated,
only
significantly
affected
process.
Specifically,
influenced
probability,
they
germinate,
number
cotyledons
developed.
wider
higher
probability
but
fewer
cotyledons.
Conclusions:
Our
findings
suggest
that
could
be
an
important
trait
influencing
reproductive
success
species.
Revista Mexicana de Biodiversidad,
Journal Year:
2024,
Volume and Issue:
95, P. e955341 - e955341
Published: March 4, 2024
Presentamos
un
análisis
de
la
diversidad
y
los
patrones
biogeográficos
260
especies
aves
residentes
bosques
tropicales
México,
realizado
a
partir
datos
históricos
(recolectados
entre
el
siglo
XVIII
2007)
registros
presencia
última
década
(2013-2023).
Realizamos
comparaciones
del
número
cambio
composición
especies,
considerando
las
matrices
distribución
“histórica”
“actual”,
parsimonia
endemismos.
De
acuerdo
con
históricos,
mayor
riqueza
se
localiza
en
vertiente
Golfo
México
península
Yucatán,
mientras
que
estacionalmente
secos
costa
Pacífico
Cuenca
Balsas
presentaron
valores
más
altos
endémicas.
Sin
embargo,
recopilados
muestran
una
disminución
significativa
todas
áreas
analizadas.
La
estimación
beta
indicó
elevados
para
evaluadas.
hipótesis
biogeográfica
obtenida
indica
existencia
2
grandes
grupos:
i)
pacífica
ii)
norte
provincia
Veracruzana,
Istmo
Tehuantepec
Yucatán.
Botanical Journal of the Linnean Society,
Journal Year:
2019,
Volume and Issue:
191(3), P. 299 - 304
Published: Sept. 11, 2019
This
issue
of
Botanical
Journal
the
Linnean
Society
contains
eight
papers
relating
to
population
genetics
and
population/species
interface.
Based
on
genetics,
morphometrics
reproductive
biology,
several
also
focus
application
data
conservation
management.
We
take
this
opportunity
present
some
our
thoughts
area
research
celebrate
recent
studies
that
have
been
published
in
journal
elsewhere.
To
conserve
biodiversity
effectively,
we
first
need
know
what
exists,
there
is
a
clear
role
for
systematic
taxonomic
circumscribing
species
identifying
high
priorities
(e.g.
Fay,
2018,
references
therein).
Following
from
using
'traditional'
next-generation
techniques
study
delimitation
(Reck-Kortmann
et
al.,
2017;
Contreras-Ortiz
2018;
Hu
Cortez
2019;
Könyves,
David
&
Culham,
Martínez-Flores
Zhong
2019),
infraspecific
taxonomy
(Hardion
Folk
Tarieiev
hybridization
(Nakahama
2019)
speciation
(Escudero
five
delimitation,
range
techniques.
Zhang
al.
(2019)
use
microsatellites
clarify
Asian
Sibbaldia
L.
(Rosaceae),
Feulner
examining
repeated
evolution
polyploids
European
Sorbus
(=
Pyrus
s.l.).
Carnicero
investigate
relationships
between
two
subspecies
Sardinian
endemic
Cymbalaria
muelleri
(Moris)
A.Chev.,
basis
amplified
fragment
length
polymorphisms
(AFLP),
flow
cytometry
morphology,
show
one
derived
out
other,
leaving
paraphyletic
other.
The
other
morphometrics,
either
alone
(to
Campanula
Cabo
Verde;
Gardère
or
combination
with
Petunia
Juss.;
Freitas
2019).
Journal of Heredity,
Journal Year:
2018,
Volume and Issue:
110(2), P. 229 - 246
Published: Nov. 26, 2018
The
host
dependence
of
mistletoes
suggests
that
they
track
the
distributions
their
hosts.
However,
factors
determine
geographic
distribution
are
not
well
understood.
In
this
study,
phylogeography
Psittacanthus
sonorae
was
reconstructed
by
sequencing
one
nuclear
(ITS)
and
two
plastid
(trnL-F
atpB-rbcL)
regions
148
plants
from
populations
separated
Sea
Cortez.
Divergence
time
gene
flow
were
estimated
to
gain
insight
into
historical
demography
structuring
genetic
variation.
We
also
described
mapped
spatial
suitable
habitat
occupied
P.
its
most
common
Bursera
microphylla
in
Sonoran
Desert,
along
with
responses
Quaternary
climate
fluctuations
using
environmental
data
ecological
niche
modeling
(ENM).
detected
differentiation
between
peninsular
continental
populations.
Population
divergence
occurred
during
Pleistocene,
around
Last
Glacial
Maximum.
No
signals
population
growth
detected,
net
moving
continent
peninsula.
ENM
models
indicate
decoupled
mistletoe
main
past
changes.
For
Interglacial
present,
produce
only
partial
areas
overlap
on
both
peninsula
continent.
Our
results
support
a
scenario
Late-Pleistocene
isolation
asymmetrical
Continental
migrated
probably
produced
under
different
conditions.
Tropical Conservation Science,
Journal Year:
2021,
Volume and Issue:
14
Published: Jan. 1, 2021
Global
climate
change
is
associated
with
changes
in
precipitation
patterns
and
an
increase
extreme
weather
events,
which
might
shift
the
geographic
distribution
of
species.
Despite
importance
this
topic,
information
lacking
for
many
species,
particularly
tropical
birds.
Here,
we
developed
species
models
(SDMs)
to
evaluate
future
projections
widespread
Buff-bellied
Hummingbird
(
Amazilia
yucatanensis)
each
recognized
subspecies
A.
y.
yucatanensis,
cerviniventris,
chalconota),
under
scenarios.
Using
SDMs
current
their
potential
four
Representative
Concentration
Pathway
(RCPs)
years
2050
2070.
We
also
calculated
climatic
niche
breadth
test
relationship
between
area
overlap.
Future
climate-change
suggested
a
small
but
predicted
range
decreased
chalconota
remained
unaffected
cerviniventris.
The
cerviniventris
contained
part
space
yucatanensis
chalconota,
niches
did
not
Our
study
highlights
correctly
choosing
taxonomic
unit
be
analyzed
because
will
respond
different
manner
change;
therefore,
conservation
actions
must
consider
intrinsic
requirements
environmental
drivers
that
shape
distributions.
Biological Journal of the Linnean Society,
Journal Year:
2023,
Volume and Issue:
138(4), P. 413 - 436
Published: March 6, 2023
Abstract
Historical
geological
events
and
Pleistocene
climatic
fluctuations
have
played
important
roles
in
shaping
distribution
population
differentiation
across
taxa.
The
buff-bellied
hummingbird
(Amazilia
yucatanensis)
is
widely
distributed
along
the
Gulf
of
Mexico
slope
Yucatan
Peninsula.
Here,
we
obtained
measurements
sequenced
two
mitochondrial
DNA
fragments
from
currently
recognized
subspecies:
Amazilia
yucatanensis
(YUC),
cerviniventris
(CER)
chalconota
(CHA).
Additionally,
tested
for
their
genetic
morphological
differentiation,
demographic
expansion,
palaeoclimatic
niche
overlap.
Our
results
reveal
between
groups
populations:
(1)
Peninsula
to
Veracruz
(YUC+CER);
(2)
Tamaulipas
Neutrality
tests
Bayesian
skyline
plots
suggest
past
expansion
without
changes
effective
size
over
time.
potential
was
fragmented
at
Trans-Mexican
Volcanic
Belt
expanded
northwards
during
Last
Glacial
Maximum
Mid-Holocene
current
conditions.
Niche
overlap
higher
YUC
CER.
environmental
space
occupied
by
subspecies
more
similar
each
other
than
expected
chance
but
significantly
non-equivalent.
provide
new
insight
on
this
widespread
species
that
fragmentation
glaciations
differences
habitat
a
role
recent
diversification.
Tropical Conservation Science,
Journal Year:
2023,
Volume and Issue:
16
Published: Jan. 1, 2023
Background
and
Research
Aims:
Historical
geological
events
climatic
changes
have
played
important
roles
in
shaping
population
differentiation
distribution
within
species.
Amazilia
rutila
(Trochilidae)
is
a
widespread
hummingbird
species
the
tropical
dry
forest
along
Pacific
slope
Yucatán
Peninsula
Mexico.
Methods:
We
used
mitochondrial
DNA
sequence,
ecological
niche
modelling
divergence
tests
to
determine
effects
of
major
geographic
barriers
environmental
variability
on
genetic
A.
continental
populations.
Results:
Our
results
revealed
three
groups
without
haplotype
sharing
corresponding
individuals/populations
from
W
Isthmus
Tehuantepec
(PAC),
Oaxaca
Chiapas
E
(CHIS_OAX)
those
Guatemala
(YUC).
Values
neutrality
suggest
past
demographic
expansion
effective
size
over
time,
time
since
ranged
between
39.4
84.45
ka
BP.
Each
group
differed
their
position
space,
with
low-to-very
limited
overlap
fundamental
dimensions
all
analyzed,
particularly
YUC
PAC.
Analysis
climate
comparisons
showed
that
space
occupied
by
these
mtDNA
similar
but
not
identical.
Conclusion:
conclude
consistent
model
isolation
geographical
differences.
Inferences
about
consequences
underlying
intraspecific
evolutionary
relationships
await
further
study.
Implications
for
Conservation:
findings
highlight
importance
preserving
significant
units
this
Conservation
actions
must
consider
intrinsic
requirements
evolutionarily
distinct
populations
drivers
shape
distributions,
maximizing
preservation
monitoring
diversity.