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#Post#: 407--------------------------------------------------
Thermoregulation
By: AGelbert Date: November 20, 2013, 8:43 pm
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[img width=640
height=480]
http://www.myrodent.com/blog/wp-content/uploads/2007/12/rat-tail.JPG[/img]
How Do Rats Regulate Body Temperature?
Rather than sweating, rats regulate their body temperature
through blood vessels in their tails. The blood vessels dilate
and constrict in a process known as thermoregulation. As a rat�s
body temperature rises, the blood vessels in its tail swell so
that warm blood moves through the vessels to the surface of the
tail, where the temperature of the blood is reduced. The cooled
blood then flows back to the body, thus lowering the rat�s body
temperature. A rat�s tail disperses about 17% of the rodent�s
body heat, even though the tail has only 5% of a rat�s surface
area.
More about rats:
Rats can survive being flushed down a toilet, because they can
tread water for as long as three days.
There is estimated to be as many rats in the United States as
there are people. ;D
A pair of brown rats are thought to be able to produce offspring
at a rate of 2,000 rats per year.
http://www.pic4ever.com/images/170fs799081.gif
http://www.wisegeek.com/how-do-rats-regulate-body-temperature.htm
Agelbert NOTE: Does this mean rats have to grow longer tails to
survive Global Warming?
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[move]Jokes about the Predatory Corporate Capitalist Crusader
R.A.T.S. (Roberts, Alito Thomas, Scalia) on the supreme Court
WELCOME!
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[move]Bigots On the Bench [img width=30
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#Post#: 11157--------------------------------------------------
Re: Thermoregulation
By: AGelbert Date: November 21, 2018, 1:52 pm
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[center][img
width=800]
https://pbs.twimg.com/media/BVbDu5OIEAAXIGa.jpg[/img][/center]
[center]How Do Swordfish Catch Prey in the Cold Ocean Depths?
http://renewablerevolution.createaforum.com/gallery/renewablerevolution/1/3-210…
Marine biologists have long been aware that some ocean
predators, such as tuna and sharks [size=18pt]🦈, are
able to warm their eyes and brains 👀 while hunting for
prey in cold underwater environments.[/size] But they didn�t
know why until a groundbreaking study about swordfish from the
University of Queensland in Australia revealed a likely
explanation. That research determined that warming of their
retinas allow swordfish to distinguish light flashes associated
with prey movement more accurately. This improved their ability
to see moving images and track their prey by as much as 10
times, the researchers found.
[center][img
width=800]
https://sites.google.com/site/swordfishbyben/_/rsrc/1307486413421/home/deephunt…
Warmer eyes, better hunting: [img
width=20]
http://renewablerevolution.createaforum.com/gallery/renewablerevolution/3-25081…
֍ It is common to find swordfish in the Pacific Ocean at a
depth of 984 feet (300 m), where the temperature can be as low
as 37�F (3�C).
֍ Temperature �must affect transmission speed in nerves
and other molecular and neurochemical processes, slowing the
whole nerve response down,� the researchers said.
֍ Contrary to popular belief, a swordfish�s "sword" is not
used to spear prey, but used instead to slash at its prey. Once
injured, the prey is easier to catch.
https://www.wisegeek.com/how-do-swordfish-catch-prey-in-the-ocean-depths.htm
#Post#: 12960--------------------------------------------------
Do Zebra 🦓 Stripes Serve a Practical Purpose?
By: AGelbert Date: July 24, 2019, 11:31 am
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[center][img
width=800]
https://s3.envato.com/files/251763606/DS3_2032.jpg[/img][/center]
[center]Do Zebra 🦓 Stripes Serve a Practical Purpose?
http://renewablerevolution.createaforum.com/gallery/renewablerevolution/1/3-120…
/>[/center]
Scientists may never understand exactly why zebras have stripes,
but 2019 research published in the Journal of Natural History
suggests a plausible answer. The alternating black and white
markings on zebras may be part of a cooling system that creates
a current of air -- the result of convection -- that acts like a
fan, helping their frothy sweat to evaporate and keeping the
animals cooler. Alison and Stephen Cobb measured the temperature
of the different color stripes on two zebras during a hot and
sunny day in Kenya. They found that the black stripes absorbed
more heat, causing a small-scale convective air movement that
cooled the animals through the evaporative process.
Why zebras earned their stripes:
► The researchers also discovered that zebras can raise
the hair on their black stripes, while the white ones remain
flat, helping trigger the evaporation.
► The researchers concluded that the three components --
convective air movements, frothy sweat, and hair raising --
combine to wick the sweat away from their skin and help them
cool down.
► Previous studies have suggested that the stripes are a
form of camouflage, even though zebras spend large periods of
time out in the open. Another study posited that the alternating
colors disorient 🙃 blood-sucking horse flies.
https://www.wisegeek.com/do-zebra-stripes-serve-a-practical-purpose.htm
#Post#: 16294--------------------------------------------------
🐸 Wood Frogs use Glucose and Urea to survive while FROZE
N SOLID! 😲
By: AGelbert Date: April 11, 2020, 9:37 pm
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[center]🐸 Nature has not closed shop
🌼🌷[/center]
[center]
https://youtu.be/O26yMu12QO0[/center]
Our favorite restaurants, cafes, stores and places for music,
worship, education and entertainment may be closed, but nature
remains �in business�.
And what a beautiful business it is.
In our neck of the woods, the choruses of wood frogs are
starting to emerge and of course bird songs are on the increase
.
LearnYourLand.com is a channel we discovered last year and we
love it.
Also if you�re looking for positive things to do in this era of
re-set, getting acquainted with the people, ideas, and
information we�ve gathered for you at PlantWisdom.org are worth
a visit.
Now a word from our �sponsors�: the tree frogs�
� Ken McCarthy
PlantWisdom.org
http://plantwisdom.org/nature-has-not-closed-shop/
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