Raman-guided exploration of placental microplastic exposure: Unraveling the polymeric tapestry and assessing developmental implications
Journal of Hazardous Materials,
Journal Year:
2024,
Volume and Issue:
477, P. 135271 - 135271
Published: July 20, 2024
Language: Английский
Evolution of Litter Size: Proximate and Ultimate Mechanisms
Kathryn Wilsterman,
No information about this author
Anna Isabel Bautista,
No information about this author
Chloe E. Butler
No information about this author
et al.
Integrative and Comparative Biology,
Journal Year:
2024,
Volume and Issue:
unknown
Published: May 26, 2024
Relative
reproductive
success
and
failure
are
the
ultimate
determinants
of
Darwinian
fitness.
As
such,
traits
variation
therein
have
an
immediate
considerable
impact
on
evolutionary
trajectory
lineages.
Historically,
significant
attention
has
been
paid
to
ecological
processes
(ultimate
factors)
that
shape
diversity
canalization
within
groups
better
our
understanding
organismal
population
or
species
resilience.
In
contrast,
physiological
systems
mediate
among
(i.e.,
proximate
in
remain
a
black
box.
To-date,
there
is
comparatively
little
information
about
how
mechanisms
constrain
promote
potential
traits.
this
mini-review,
we
focus
litter
size
Eutherian
mammals
as
trait
with
relatively
well-defined
(litter
sizes
well-described
both
across
species)
for
which
some
genetic
identified.
We
discuss
special
breadth
may
act
"toggle"
switches
evolution
size.
close
brief
discussion
role
plasticity
play
lay
out
several
forward-looking
areas
future
research.
Language: Английский
Placental–Heart Axis: An Evolutionary Perspective
International Journal of Molecular Sciences,
Journal Year:
2024,
Volume and Issue:
25(20), P. 11212 - 11212
Published: Oct. 18, 2024
To
maintain
its
development,
the
growing
fetus
is
directly
dependent
on
placenta,
an
organ
that
acts
as
both
a
modulator
and
mediator.
As
essential
component
of
pregnancy
derived
from
maternal
fetal
tissues,
placenta
facilitates
passage
all
oxygen
nutrients
expecting
parent
to
their
fetuses.
Further,
conveys
multiple
impacts
environment
fetus.
The
timing
placental
development
parallels
cardiovascular
system,
anomalies
are
implicated
potential
cause
congenital
heart
disease.
For
example,
disease
more
common
in
pregnancies
complicated
by
preeclampsia,
condition
characterized
dysfunction.
Given
placenta’s
intermediary
links
health
outcomes,
it
emerging
focus
evolutionary
medicine,
which
seeks
understand
how
interactions
between
humans
affect
our
biology
give
rise
present
review
provides
overview
developmental
courses
well
implications
infant
health.
Language: Английский
United by conflict: Convergent signatures of parental conflict in angiosperms and placental mammals
Hagar K Soliman,
No information about this author
Jenn M. Coughlan
No information about this author
Journal of Heredity,
Journal Year:
2024,
Volume and Issue:
115(6), P. 625 - 642
Published: Feb. 16, 2024
Abstract
Endosperm
in
angiosperms
and
placenta
eutherians
are
convergent
innovations
for
efficient
embryonic
nutrient
transfer.
Despite
advantages,
this
reproductive
strategy
incurs
metabolic
costs
that
maternal
parents
disproportionately
shoulder,
leading
to
potential
inter-parental
conflict
over
optimal
offspring
investment.
Genomic
imprinting—parent-of-origin-biased
gene
expression—is
fundamental
endosperm
development
has
convergently
evolved
mammals,
part,
resolve
parental
conflict.
Here,
we
review
the
mechanisms
of
genomic
imprinting
these
taxa.
differences
timing
spatial
extent
imprinting,
taxa
exhibit
remarkable
convergence
molecular
machinery
genes
governing
imprinting.
We
then
assess
role
shaping
evolution
within
using
four
criteria:
1)
Do
sibling
relatedness
cause
inferred
strength
conflict?
2)
reciprocal
crosses
between
with
different
histories
parent-of-origin
growth
effects?
3)
Are
effects
caused
by
dosage-sensitive
do
loci
signals
positive
selection?
4)
Can
normal
be
restored
perturbations
restore
stoichiometric
balance
endosperm/placenta?
Although
find
evidence
all
criteria
eutherians,
suggesting
may
help
shape
their
evolution,
many
questions
remain.
Additionally,
myriad
two
suggest
respective
biologies
how/when/where/to
what
manifests.
Lastly,
discuss
outstanding
questions,
highlighting
power
comparative
work
quantifying
evolution.
Language: Английский
To what extent do physiological tolerances determine elevational range limits of mammals?
The Journal of Physiology,
Journal Year:
2023,
Volume and Issue:
602(21), P. 5475 - 5484
Published: Oct. 27, 2023
Abstract
A
key
question
in
biology
concerns
the
extent
to
which
distributional
range
limits
of
species
are
determined
by
intrinsic
physiological
tolerance.
Here,
we
use
common‐garden
data
for
wild
rodents
assess
whether
with
higher
elevational
typically
have
thermogenic
capacities
comparison
closely
related
lowland
species.
Among
South
American
leaf‐eared
mice
(genus
Phyllotis
),
mean
performance
is
limits,
but
there
little
among‐species
variation
magnitude
plasticity
this
trait.
In
North
rodent
genus
Peromyscus
,
highland
deer
(
maniculatus
)
greater
maximal
oxygen
uptake
()
than
white‐footed
leucopus
at
a
level
hypoxia
that
matches
upper
limit
former
mice,
enhanced
attributable
combination
evolved
and
plastic
changes
pathways
govern
transport
utilization
O
2
metabolic
substrates.
Experiments
also
demonstrate
exposure
during
different
stages
development
elicits
cardiorespiratory
traits
improve
via
distinct
mechanisms.
Evolved
differences
capacity
provide
clues
about
why
some
able
persist
higher‐elevation
habitats
lie
slightly
beyond
tolerable
other
Such
environmental
tolerance
suggest
might
be
more
vulnerable
climate
change
others.
image
Language: Английский