A refined magnetic pulse treatment method for magnetic navigation experiments with adequate sham control: a case study on free-flying songbirds
Journal of The Royal Society Interface,
Год журнала:
2024,
Номер
21(214)
Опубликована: Май 1, 2024
Migratory
songbirds
may
navigate
by
extracting
positional
information
from
the
geomagnetic
field,
potentially
with
a
magnetic-particle-based
receptor.
Previous
studies
assessed
this
hypothesis
experimentally
exposing
birds
to
strong
but
brief
magnetic
pulse
aimed
at
remagnetizing
particles
and
evoking
an
altered
behaviour.
Critically,
such
were
not
ideally
designed
because
they
lacked
adequate
sham
treatment
controlling
for
induced
electric
field
that
is
fundamentally
associated
pulse.
Consequently,
we
sham-controlled
magnetic-pulse
experiment,
producing
similar
while
limiting
value
deemed
insufficient
remagnetize
particles.
We
tested
novel
approach
pulsing
more
than
250
wild,
migrating
European
robins
(
Erithacus
rubecula
)
during
two
autumn
seasons.
After
them,
five
traits
of
free-flight
migratory
behaviour
observed,
no
effect
could
be
found.
Notably,
one
traits,
motivation
adults,
was
significantly
affected
in
only
study
years.
Considering
problem
reproducing
experiments
wild
animals,
recommend
multi-year
encompassing
large
sample
size,
blinded
design
built-in
control
obtain
future
insights
into
role
magnetoreception
bird
navigation.
Язык: Английский
Recent Studies on the Effects of Static Magnetic Fields (SMF) on Reproductive Function
Current Issues in Molecular Biology,
Год журнала:
2025,
Номер
47(2), С. 116 - 116
Опубликована: Фев. 11, 2025
Background:
With
the
widespread
use
of
static
magnetic
fields
(SMFs)
in
applications
such
as
resonance
imaging
(MRI)
and
electric
vehicles,
concerns
have
arisen
regarding
their
potential
effects
on
reproductive
health.
Despite
increasing
research,
impact
SMFs
function
remains
a
subject
debate,
requiring
further
exploration.
Methods:
This
review
synthesizes
animal
clinical
studies
SMF
function.
It
examines
various
intensities
exposure
durations,
focusing
mitochondrial
function,
chromosomal
division,
embryonic
development.
Results:
The
reveals
that
low-intensity
adversely
affects
sperm
eggs,
reducing
activity.
also
impacts
follicular
cells,
delaying
division.
Medium-
high-intensity
shows
mixed
results,
with
both
benefits
risks,
research.
High-intensity
may
pose
teratogenic
risks
to
embryos
delay
development
fertilized
eggs.
position
matters,
likely
due
field
non-uniformity.
Conclusions:
provides
foundation
for
investigation
into
highlighting
need
more
comprehensive
assess
safety
applications.
Special
caution
is
advised
pregnant
women
exposure,
given
its
risks.
Язык: Английский
Conservation‐focused mapping of avian migratory routes using a pan‐European automated telemetry network
Conservation Biology,
Год журнала:
2025,
Номер
unknown
Опубликована: Март 24, 2025
Accelerated
biodiversity
loss
has
destabilized
functional
links
within
and
between
ecosystems.
Species
that
cross
different
ecosystems
during
migration
breeding
nonbreeding
sites
are
particularly
sensitive
to
global
change
because
they
exposed
various,
often
ecosystem-specific,
threats.
Because
these
threats
have
lethal
nonlethal
effects
on
populations,
many
migratory
species
declining,
making
this
group
especially
vulnerable
change.
To
mitigate
their
decline,
research
at
a
continental
flyway
scale
is
required
adequately
monitor
changes
in
the
demographic
processes
of
populations
all
parts
annual
cycle.
The
Motus
Wildlife
Tracking
System
(Motus)
could
provide
solution
data
gaps
exist
for
small,
species.
an
automated
telemetry
system
animal
tracking
uses
single
very-high-frequency
radio
signal
track
tagged
individuals.
can
information
movements
made
by
individuals
small
migrant
species,
thereby
aiding
understanding
aspects
affect
parameters.
Conservation-focused
opportunities
related
include
identification
critical
stopover
support
connect
multiple
insight
into
decisions
birds
environmental
stressors,
such
as
artificial
light
night.
Examples
studies
from
existing
network
demonstrate
its
utility
high-conservation-value
area
blackpoll
warbler
(Setophaga
striata)
eastern
United
States.
Geographical
across
Mediterranean
region
Europe
need
be
filled
continent-wide
movements.
individual-level
variety
small-bodied
taxa,
drive
expand
will
improve
ability
direct
conservation
plans
Язык: Английский