Creatures of the Sun
- Description
- Reviews
- Citation
- Cataloging
- Transcript
Enter the intriguing world of the Midland Painted Turtle, and follow it across the four seasons, through hibernation, mating, birth and death.
This beautifully filmed, engaging profile of a most ancient, durable animal will inspire respect for the precious, fragile ponds and marshes where it makes its home.
The Painted Turtle can be found throughout much of North America, in freshwater shallows that have an abundance of aquatic vegetation. Long considered expendable, these wetlands are now recognized as being immensely rich ecosystems that are essential in maintaining nature's balance.
'This is one of the best educational videos I have encountered and I recommend it highly for school and public libraries.' Barbara Butler, Oregon Institute of Marine Biology, MC Journal
'It is very well done. This video would be suitable for virtually all school-aged students and their teachers.' The Science Teacher
'Highly recommended.' Wisconsin Bookwatch
'Well worth watching...This film is suitable for most ages, as the narration is slow, the vocabulary load is low, and the pictures are excellent.' Science Books and Films
Citation
Main credits
Trow, Susan (film director)
Trow, Susan (director of photography)
Lewis, Jefferson (screenwriter)
Martin, Kent (film producer)
Latchem, Tim (film producer)
Grenon, Macha (narrator)
Other credits
Editor and associate director, Donna Read; music, Neil Smolar; science consultant, Roger Bider.
Distributor subjects
Animals; Biodiversity; Biology; Ecology; Endangered Species; Environment; Life Science; Life Science; Turtles; Wetlands; WildlifeKeywords
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Over 200 million years ago
and the dinosaurs took
00:00:58.640 --> 00:01:04.650
their first steps out of the marshes and
rose to rule the earth. They were watching.
00:01:06.490 --> 00:01:12.124
And the giant ancestors of these damsel
flies through over ancient swamps.
00:01:12.125 --> 00:01:14.640
They were already here.
00:01:19.600 --> 00:01:25.170
While countless other species
have risen failed become.
00:01:25.180 --> 00:01:28.084
The turtle has survived.
00:01:28.085 --> 00:01:31.800
It is the oldest living reptile on earth.
00:01:46.660 --> 00:01:50.089
It\'s not by chance the
turtle is still around.
00:01:50.090 --> 00:01:53.374
But because it is a tough
adaptable creature.
00:01:53.375 --> 00:01:57.990
The successful outcome of a
long evolutionary process.
00:02:00.970 --> 00:02:03.499
This is a painted turtle.
00:02:03.500 --> 00:02:06.319
It can live as long as 30 years
00:02:06.320 --> 00:02:10.879
And of all the North American turtles
it is the only one that ranges across
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a continent from east to
west and north to south.
00:02:21.550 --> 00:02:26.134
As summer slips away in
Southern Quebec autumn arrives
00:02:26.135 --> 00:02:31.110
with a few last lingering
days of sun and warmth.
00:02:34.900 --> 00:02:40.549
The painted turtles in this pond or close
to the northern limit of the range.
00:02:40.550 --> 00:02:44.629
Here where winter will
last six long months.
00:02:44.630 --> 00:02:48.120
They soak up the last
bit of the sun\'s warmth
00:02:58.330 --> 00:03:01.459
As flocks of geese make their long journey
00:03:01.460 --> 00:03:05.299
south the painted turtle
takes her final breath.
00:03:05.300 --> 00:03:09.799
Making her own journey for survival
down to the bottom of the pond.
00:03:09.800 --> 00:03:13.470
Looking for a suitable
place to spend the winter.
00:03:23.800 --> 00:03:29.268
Like many other reptiles the turtle
will survive the frigid temperatures
00:03:29.269 --> 00:03:36.229
Entering torpor a kind of hibernation where
her body temperature drops close to 0.
00:03:36.230 --> 00:03:41.070
And her heartbeat slows down
until it\'s barely perceptible.
00:03:41.380 --> 00:03:49.084
She finds a spot and settles in neither
eating nor breathing through the winter.
00:03:49.085 --> 00:03:54.210
Absorbing what little oxygen she
needs directly from the water.
00:04:01.360 --> 00:04:05.839
While she waits out the ice and
cold on the bottom of the pond.
00:04:05.840 --> 00:04:11.614
The baby turtles or in the summer before
have not yet left their nest in the ground.
00:04:11.615 --> 00:04:14.269
They lie there beneath
a shallow covering of
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Earth perfectly hatched and ready to move.
But waiting.
00:04:21.010 --> 00:04:27.229
Because of a remarkable adaptation the
baby turtles can almost totally freeze.
00:04:27.230 --> 00:04:32.509
Their heart stopped beating
their blood ceases to flow.
00:04:32.510 --> 00:04:35.914
With life in them reduced
to a faint murmur.
00:04:35.915 --> 00:04:41.970
They lie in the nest waiting for Earth\'s
turnings to bring winter to an end
00:05:02.200 --> 00:05:08.014
As for this female she may have to move
several times on the floor of her pond.
00:05:08.015 --> 00:05:12.634
Temporarily digging into the mud
to escape the descending ice.
00:05:12.635 --> 00:05:19.650
Life goes on. While the turtle is suspended
under the layers of snow and ice
00:06:05.170 --> 00:06:09.739
It\'s not hunger but the light of
the sun and the gradual warming of
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the water that wake the turtle and eventually
draw her to the surface of the pond
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Stiff and sluggish from
the long winter\'s cold.
00:06:56.675 --> 00:07:01.260
This painted turtle heads
for a prime basking spot.
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Basking is not just a pleasant
way to spend a Sunday afternoon.
00:07:19.295 --> 00:07:22.380
For a turtle it is essential
00:07:24.490 --> 00:07:27.049
It\'s thick dark shell is
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a wonderful solar collector warming the
turtle and speeding up its metabolism.
00:07:32.635 --> 00:07:37.834
So it can feed digest
grow mate and lay eggs.
00:07:37.835 --> 00:07:40.770
In the next few months of warmth.
00:07:55.270 --> 00:07:59.059
The stress of hibernation
does take its toll.
00:07:59.060 --> 00:08:02.239
Each string turtles and
marriage only to die
00:08:02.240 --> 00:08:06.060
shortly after with no sign
of injury or disease.
00:08:12.610 --> 00:08:17.700
There are vastly different
reproductive strategies in the pond.
00:08:18.550 --> 00:08:22.159
Unlike the turtle and the
short-lived would frog is
00:08:22.160 --> 00:08:25.834
an explosive breeder
producing thousands of eggs.
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It\'s developed rapidly so
that some may survive.
00:08:30.880 --> 00:08:35.629
The turtle on the other hand Millie
only to a 100 eggs and the lifetime.
00:08:35.630 --> 00:08:39.810
So the survival of at least a
couple to adulthood is vital.
00:08:42.700 --> 00:08:47.580
The first hatchlings has emerged
from the darkness of the nest.
00:08:48.910 --> 00:08:54.364
There\'s no parent to teach this baby
turtle everything it needs to know.
00:08:54.365 --> 00:09:00.480
It knows already as messages of millions
of years run through its tiny brain.
00:09:05.320 --> 00:09:09.540
The first impulse is to find safety.
00:09:09.610 --> 00:09:14.329
Little hatchlings may face a journey
of hundreds of meters taking
00:09:14.330 --> 00:09:20.820
several days all the while exposed to hangry
predators before it finally finds water
00:09:31.300 --> 00:09:34.909
The hatchlings emerge
at the same time after
00:09:34.910 --> 00:09:39.510
the spring rains have loosen the soil
and the sun has warmed the Earth.
00:09:46.480 --> 00:09:51.049
Its determination suggests
some inner purpose.
00:09:51.050 --> 00:09:52.819
Some genetic imprint.
00:09:52.820 --> 00:09:55.650
We can only try to imagine
00:10:13.420 --> 00:10:19.200
The turtle hatchlings reaches the pond
but it is far from being out of danger.
00:10:19.690 --> 00:10:26.310
This snapping turtle Lang patiently an ambush
wouldn\'t hesitate to eat a hatchlings.
00:10:28.630 --> 00:10:32.520
Other predators seek other prey.
00:10:33.340 --> 00:10:37.369
The young tadpoles trying to break
free of the egg masses that
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protected them and not be as
lucky as the hatchlings turtle.
00:10:41.450 --> 00:10:45.900
As leeches and salamanders come to feed.
00:10:54.430 --> 00:10:57.499
Within a few short weeks of emerging from
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the winter ice courtship among
Painted Turtles has begun.
00:11:01.835 --> 00:11:06.750
With smaller mail in patient
pursuit of the larger female.
00:11:18.100 --> 00:11:22.129
The male can be distinguished
by the exceptionally long claws
00:11:22.130 --> 00:11:25.729
on his four feet and by a long thick town.
00:11:25.730 --> 00:11:28.609
Though the clause may appear
to be meant for fighting.
00:11:28.610 --> 00:11:34.350
In fact they are used as part of a
graceful and tender courtship ritual.
00:11:36.340 --> 00:11:39.589
Following a chase that can last hours.
00:11:39.590 --> 00:11:43.909
The female turns into the shallows
where the male heads her off and
00:11:43.910 --> 00:11:48.990
comes toward her face-to-face
vibrating his long clause.
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He slides forward and strokes for head
and neck with the backs of his claws.
00:12:04.160 --> 00:12:07.830
As she\'s suspended in the water beforehand.
00:12:09.820 --> 00:12:14.029
If the female is not
interested she will keep
00:12:14.030 --> 00:12:18.300
moving until he tires of
the pursuit and looks
00:12:21.730 --> 00:12:24.679
If she is interested she will sink to
00:12:24.680 --> 00:12:29.580
the bottom where the male mounts
her and mating takes place.
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While the turtle cycle of
reproduction has just begun
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Birds who share this pond
it is well underway.
00:13:04.990 --> 00:13:08.419
To be ready for the migration
south in the fall.
00:13:08.420 --> 00:13:14.340
These baby red winged blackbirds will
need to be fed from morning till night.
00:13:17.860 --> 00:13:22.290
Thereby about him are oreal forages.
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Unlike the turtle hatchlings these chicks
will be totally helpless for several weeks
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With the mating complete the turtles
returned to their favorite pastime.
00:14:01.750 --> 00:14:08.314
When it comes to Basking painted turtles are
among the champions of the turtle world.
00:14:08.315 --> 00:14:12.349
Alternating periods of swimming
and feeding with periods
00:14:12.350 --> 00:14:16.590
of basking in the sun all
through the hot summer days.
00:14:26.200 --> 00:14:30.304
Turtles can\'t generate heat
internally from eating.
00:14:30.305 --> 00:14:35.040
So they rely on external sources
to speed up their metabolism.
00:14:36.490 --> 00:14:40.590
Every little bit of exposure helps.
00:14:41.530 --> 00:14:46.800
Even the scales they shed our
loosened by the warmth of the sun.
00:15:01.270 --> 00:15:05.404
I cite among turtles is
apparently quite keen
00:15:05.405 --> 00:15:09.979
Total range of color perception
is close to that of humans.
00:15:09.980 --> 00:15:13.159
Like all aquatic turtles the windpipe is
00:15:13.160 --> 00:15:16.279
located on the floor of the
mouth behind the tongue.
00:15:16.280 --> 00:15:21.169
It can be closed off by a valve to allow
swelling underwater without flooding.
00:15:21.170 --> 00:15:22.740
The lungs.
00:15:30.580 --> 00:15:32.464
Painted turtles
00:15:32.465 --> 00:15:36.499
are omnivorous surviving on
algae and other aquatic plants
00:15:36.500 --> 00:15:41.880
as well as insects larva
small frogs and carrying.
00:15:50.250 --> 00:15:53.409
It is late June the time has come for
00:15:53.410 --> 00:15:57.590
the female turtles to leave the
pond and find a nesting place.
00:16:09.270 --> 00:16:12.519
Turtles are Swift and powerful swimmers.
00:16:12.520 --> 00:16:16.220
And in the water there is
little for them to fear.
00:16:17.460 --> 00:16:20.574
But on land it is a different matter.
00:16:20.575 --> 00:16:24.729
They\'re slow and awkward
pace makes them vulnerable.
00:16:24.730 --> 00:16:30.269
It\'s not uncommon to see a turtle would
choose edges on her shell for missing foot
00:16:30.270 --> 00:16:36.559
like this one. Remarkably
even if maternal loses
00:16:36.560 --> 00:16:39.499
a leg it won\'t lead to death because
00:16:39.500 --> 00:16:43.590
it\'s blood coagulates quickly
allowing you to carry on.
00:16:45.580 --> 00:16:51.840
Whatever the risks at this time of year
the female painted turtle will face them.
00:16:51.910 --> 00:16:54.784
The warmest days are beginning.
00:16:54.785 --> 00:16:57.379
The next three months we\'ll
be the most favorable
00:16:57.380 --> 00:17:00.570
for baby turtles to develop in their eggs.
00:17:06.820 --> 00:17:12.694
The ideal nesting site is an open
spot with loose soil easy to dig
00:17:12.695 --> 00:17:17.374
And exposed to the sun to
make the ground softer and
00:17:17.375 --> 00:17:23.370
easier to excavate the female turtle will wet
the soil with water stored in her bladder.
00:17:28.000 --> 00:17:30.349
She will lay somewhere between
00:17:30.350 --> 00:17:36.720
five and a dozen eggs and trusting
them to the earth for care.
00:17:48.280 --> 00:17:53.850
Every night during the nesting
season the predators come hunting.
00:18:02.140 --> 00:18:07.489
A skunk had close to the
earth shifts and sniffs
00:18:07.490 --> 00:18:14.340
searching every inch of the ground for
the nest it knows are there somewhere
00:18:25.420 --> 00:18:29.119
Someone else beat him to it this time.
00:18:29.120 --> 00:18:33.109
Perhaps another skunk perhaps
her raccoon feasting
00:18:33.110 --> 00:18:36.844
on the eggs and leaving the
torn and twisted shells behind.
00:18:36.845 --> 00:18:41.194
This will be the fate of many of the
eggs that will get laid the season.
00:18:41.195 --> 00:18:45.964
But those that do survive will be
enough to maintain the population.
00:18:45.965 --> 00:18:50.490
If the last 200 million
years or anything to go by.
00:18:53.260 --> 00:18:58.590
Another female has left the safety
of the pond to lay her eggs.
00:19:04.390 --> 00:19:07.429
With great gentleness and dexterity
00:19:07.430 --> 00:19:14.250
She arranges the freshly laid eggs just so
in her nest relying on her sense of touch.
00:19:23.470 --> 00:19:27.330
She never sees the eggs she lays.
00:19:40.150 --> 00:19:43.789
Her task is complete for this year.
00:19:43.790 --> 00:19:49.380
And the female returns to the water
considerably lighter than when she left.
00:19:49.690 --> 00:19:52.939
There is no way of knowing what if any
00:19:52.940 --> 00:19:56.670
thought she harbors of the
eggs she has left behind.
00:20:04.960 --> 00:20:09.529
Beneath the warm summer rains
in their shell bound worlds.
00:20:09.530 --> 00:20:12.750
The embryos will develop and grow
00:20:36.520 --> 00:20:42.750
As the end of August approaches the
protective shells starts to become a prison.
00:20:44.440 --> 00:20:47.479
With the egg tooth on its upper lip
00:20:47.480 --> 00:20:51.720
the restless hatchlings opens
a tiny slave in the shell.
00:20:54.070 --> 00:20:57.709
Just as it controls so
much else in their lives.
00:20:57.710 --> 00:21:00.529
The heat of the sun will
ultimately decide whether
00:21:00.530 --> 00:21:03.409
the hatchlings that
emerges is male or female
00:21:03.410 --> 00:21:05.749
depending on the temperature
and the nest during
00:21:05.750 --> 00:21:11.220
incubation males if it was
cool females if it was warm
00:21:29.920 --> 00:21:33.349
In warmer climates these
hatching twins would
00:21:33.350 --> 00:21:36.454
probably make the short journey
to the surface immediately.
00:21:36.455 --> 00:21:41.179
This far north it will remain here in
the nest over the winter to emerge in
00:21:41.180 --> 00:21:46.759
the spring just like the hatchlings from
last season and every season before that
00:21:46.760 --> 00:21:50.400
Stretching back for millions of years
00:21:53.980 --> 00:21:58.158
through all that time the
painted turtle has survived
00:21:58.159 --> 00:22:02.704
relatively unchanged in ponds
and wetlands like this one.
00:22:02.705 --> 00:22:05.719
But the world around us changed
00:22:05.720 --> 00:22:10.399
only a short distance from here
eight lanes of traffic law by.
00:22:10.400 --> 00:22:16.410
And for the first time the turtle survival
depends on the whims of another species.
00:22:22.330 --> 00:22:29.524
In fact we humans are merely a blink in the
history of life on this planet. The turtles
00:22:29.525 --> 00:22:32.700
Or a long slow stair.
00:22:34.120 --> 00:22:37.354
They watched dinosaurs come and go.
00:22:37.355 --> 00:22:40.084
Landmasses rise and fall.
00:22:40.085 --> 00:22:43.069
Sa species that we cannot even imagine.
00:22:43.070 --> 00:22:47.310
Evolve thrive and die out.
00:22:48.610 --> 00:22:53.959
From deepen some Swamp they may
watch the last human vanish.
00:22:53.960 --> 00:22:57.540
And then Blink and turn away
00:24:03.790 --> 00:24:06.180
three