Responses to Hypoxia and Hyperoxia in Embryonic Tiger Keelbacks (Rhabdophis tigrinus lateralis; Colubridae)
Xiang‐Mo Li,
Shan Su,
Lu‐Wen Zhang
и другие.
Journal of Experimental Zoology Part A Ecological and Integrative Physiology,
Год журнала:
2025,
Номер
unknown
Опубликована: Фев. 10, 2025
ABSTRACT
Studies
examining
the
oxygen
dependency
of
embryonic
survival,
growth,
and
differentiation
have
been
conducted
for
decades
in
a
diverse
array
animal
taxa
but
including
only
one
oviparous
snake,
viperine
water
snake
Natrix
maura
.
Here,
we
describe
study
incubating
eggs
tiger
keelback
Rhabdophis
tigrinus
lateralis
(Colubridae)
under
four
conditions,
hypoxia
(7%
11%
O
2
),
normoxia
(21%
hyperoxia
(31%
different
lengths
or
at
stages
incubation.
The
length
hypoxic
exposure
is
important
affecting
development
R.
t.
,
with
prolonged
retarding
growth
differentiation,
increasing
mortality
deformity,
reducing
hatchling
size
mass,
altering
body
shape
relative
to
normoxic
controls.
Embryonic
keelbacks
are
most
susceptible
late
development,
as
revealed
by
fact
that
5‐day
7%
reduced
embryo
mass
if
it
occurred
Hyperoxia
31%
did
not
enhance
embryos,
head
width,
which
slightly
differed
between
hyperoxic
hatchlings
their
siblings.
This
demonstrates
importance
avoiding
snakes.
Язык: Английский
Effects of layer breeder age and reduced incubator oxygen concentrations on embryo development, hatching events, chick quality, embryonic mortality and hatchability of fertile eggs
Heliyon,
Год журнала:
2024,
Номер
10(22), С. e40468 - e40468
Опубликована: Ноя. 1, 2024
Язык: Английский
Impact of Late Stage Hypoxic Stimulation and Layer Breeder Age on Embryonic Development, Hatching and Chick Quality
Poultry Science,
Год журнала:
2024,
Номер
104(2), С. 104691 - 104691
Опубликована: Дек. 24, 2024
The
present
study
examined
the
effects
of
breeder
age
and
oxygen
(O₂)
concentrations
during
late
chorioallantoic
membrane
(CAM)
growth
stage
on
embryo
development,
hatching
dynamics,
chick
quality,
bone
mineralization
hatchability.
A
total
1200
eggs
from
33-
50-week-old
ISA
layer
breeders,
weighing
53.85
g
60.42
average
respectively,
were
incubated
at
37.7°C
56
%
relative
humidity.
From
embryonic
day
(ED)
13
to
15,
experimental
exposed
hypoxia
(15
or
17
O₂
for
1
hr/day)
while
control
was
21
O₂.
Results
showed
significant
interactions
(p
=
0.040)
between
level,
with
embryos
15
exhibiting
slower
by
ED
17.
However,
weight
internal
pipping
(IP)
unaffected
>
0.05).
At
hatch,
weights
higher
in
hypoxic
groups
due
increased
yolk
sac
retention
0.024),
yolk-free
influenced
only
<
0.001).
Hypoxia
reduced
length,
toe
tibia
parameters
0.05),
likely
impaired
calcium
phosphorus
absorption.
Embryos
O
Язык: Английский