Methods for measuring fine-scale social proximity in small mammals
Journal of Mammalogy,
Journal Year:
2025,
Volume and Issue:
unknown
Published: May 7, 2025
Abstract
There
are
barriers
to
directly
observing
animals
that
cryptic
or
live
in
environments
inaccessible
humans.
Biologgers,
animal-attached
devices
designed
collect
data
on
without
a
human
researcher
present,
have
become
useful
tools
for
studying
species
cannot
be
observed.
The
use
of
biologgers
has
been
size-limited
until
recent
efforts
miniaturize
the
technology
opened
up
possibility
using
them
small
animals.
In
this
study,
we
packaged
and
deployed
proximity
logging
(“ProxLogs”
model)
small,
socially
monogamous,
semifossorial
mammal,
Prairie
Vole
(Microtus
ochrogaster),
as
means
high-resolution
fine-scale
spatial
between
conspecifics.
First,
evaluated
multiple
packaging
options
found
UV-curing
epoxy
resin
containing
grit
(sand)
was
most
durable
material.
ProxLogs
recorded
voles
when
they
were
within
6
cm
each
other.
We
compared
resolution
social
collected
by
patterns
through
livetrapping
and,
expected,
generated
significantly
higher-resolution
than
livetrapping.
also
predicted
ProxLogs.
Our
findings
provide
proof
concept
loggers,
with
resin,
reliable,
method
24-h
mammals
otherwise
difficult
observe.
Language: Английский
Arthropod Foraging in a Temperate Mountain Hummingbird Ensemble
Birds,
Journal Year:
2024,
Volume and Issue:
5(4), P. 774 - 797
Published: Dec. 2, 2024
Arthropods
are
hummingbirds’
principal
source
of
nitrogen,
fatty
acids,
and
micronutrients.
Despite
the
nutritional
importance
arthropods
for
hummingbirds,
our
understanding
factors
influencing
their
consumption
relative
role
as
an
energy
remains
limited.
Here,
we
aimed
to
describe
use
by
a
hummingbird
ensemble
in
seasonal
temperate
mountain
ecosystem
West
Mexico
during
one
annual
cycle.
We
compared
arthropod
capture
attempt
rates
among
six
different
humming
species.
Also,
investigated
impact
variation
food
availability
on
White-eared
Hummingbird
(Basilinna
leucotis),
sole
species
observed
foraging
all
seasons.
found
that
hummingbirds
ingested
from
orders
(Araneae,
Hemiptera,
Psocoptera,
Hymenoptera,
Diptera),
with
varying
wildly
The
showed
significant
positive
correlation
availability,
peaking
warm-dry
season
when
floral
nectar
was
scarce
high.
Our
data
show
ingestion
is
crucial
some
species,
mainly
limited
or
absent
environment.
Language: Английский