"Basic research is like shooting an arrow into the air and, where it lands, painting a target." Homer Adkins
As
an adaptation to hide from its predator, I learnt that camouflage has proven to
be very effective. Animals such as the zebra, leopards, chameleons and polar
bear have used camouflage mechanisms to thrive and still live on till now. As a
matter of fact, the reindeer, being the largest existing species of its kind,
utilizes camouflage for defense from its predators.
Therefore,
I decided to research on camouflage mechanisms. I wanted to aid my organism
with one of this so that it can fulfill its role effectively in the food chain
by sustaining an optimum level of its species and not being wiped out
completely by its predator. Firstly, I ventured deeper into the types of
camouflage. I discovered about various methods such as background matching,
self-shadow concealment and transparency.
Background
matching, as we all know, it widely used by many animals such as chameleons and
stick insects. Following are some photos that I saw along the way when looking
up about this type of camouflage. According to the Cambridge University Press,
background matching refers to “where the appearance generally matches
the colour, lightness and the pattern of one (specialist) or several
(compromise) background types”. This is what I gained from reading excerpts of the book “Animal
Camouflage: Mechanisms and Function”. Similarly, there was a greater deal of
knowledge I gained from this book about the other types of camouflage. The one
that caught my attention were self-shadow concealment and transparency of the
body.
Self-shadow
concealment is said to be “where directional light, which would lead to the creation of
shadows, is cancelled out by countershading”. Initially, when I encountered
this term, I was unable to comprehend and visualize how this method worked. As
a result, I went to search up on examples of animals, which used this mechanism
and also images of this method at work. These are some of the photographs that
aided me in letting me gain a holistic definition of this method so that I
could apply it in future.
Transparency,
as suggested by the name itself, is where the body of the animal is
transparent. Transparent connotes that the body of the animal allows most light
to pass through. Hence, the predator would also not be able to spot the
existence of this creature.
Having
researched on these, from my previous findings, I had to strictly rule out two
of the mechanisms, as it would not maximize the beneficiary of that adaptation.
These two are self-shadow concealment and transparency. Acquainting my organism
with one of these would not work well and also pose a certain disadvantage as
well.
As
for the self-shadow concealment, this method would not be able to function at
all in the Alpine Tundra biome. Some research on the environmental conditions
of this biome, told me that trees cannot grow on the mountains due to the high
altitude. Moreover, temperature in the Alpine Tundra are mostly below the
freeing point and hence, most water bodies would be frozen, not allowing much
for aquatic organisms. Self-shadow concealment only effectively functions when
elevated on a tree or underwater. Hence, this mechanism would not work for the
organism in the Alpine Tundra.
On
the other hand, I was thinking of making this feature have more than one use.
For instance, make the skin colour such that it would help in both camouflaging
and for keeping warm. If the body were to be transparent, it would only serve
the purpose as a camouflaging agent. However, if the skin of the organism were
to be a dark colour, which make the organism merge into the surroundings, it
would also be able to absorb more heat to keep the organism warm in this
extremely cold environment.
After
much contemplation, considering all of these possibilities, I have decided to
use the background matching mechanism for the organism to hide from its
predators. As a result, I plan to use dark green for the skin of the organism
since it would blend in with the foliage during summer in the Alpine Tundra.
Due to the fact that darker colours absorb more heat since they reflect less
light, this dark green would also aid in absorbing maximum heat possible to
keep the organism warm since summer temperature are also low.
This
led me to the next adaptation required for the organism – its
camouflaging agent during the winter. In winter, most of the surroundings will
be covered with snow and ice. Hence, the biome would generally look as if it is
completely white. The Alpine Tundra during winter would look something like
this.
In
such a situation, the green skin of the organism would just make it all the
more conspicuous, over this white background. Hence, I went to look up on what
would serve the same purposes as the green skin. The new outer covering would
also need to keep the organism warm.
These
are a few of the methods I obtained from my research for keeping warm.
- · Blubber
- · Fur
- · Huddling together
Blubber
is a thick layer of fats which insulating layer, keeping the animal warm. If
this were how the organism would keep warm in winter, the skin would remain the
same and this would make it 2 adaptations. Therefore, I moved on to the other
mechanisms to see whether they would work better.
Fur
is short, fine, soft hair which covers the body of the animal. Fur is usually
white in colour and also traps a layer of air close to the animal’s body. As
such, since air is a poor conductor of heat, the animal would lose heat to its
surroundings at a slower rate and thus, be able to keep warm. This seemed like
the perfect solution for me, as it would allow it to camouflage and keep warm.
However, I did not wish to miss out on anything and hence decided to read up on
the method of huddling together to keep warm before deciding anything.
Huddling
together is where a group of the same species of animals either stands in a
circle or in contact with each other. This way, the body heat of the penguins
will circulate among them and not be lost to the surroundings. Unfortunately,
this does not help the organisms to conceal themselves from the monsters
hunting them down.
Therefore,
having explored the different options in which the organism can possess one
adaptation but receive more than one benefit from it, I have decided to use the
fur to be the organism’s outer covering in the winter, which it would then shed in
the summer.
Hiding
from the predator alone would not protect the organism and it should have more
defense mechanisms, which would help it in situations where it already knows
that the predator is coming. Camouflage works any time, nevertheless of the
predator’s presence.
Apart from camouflage, which tricks the predator’s sense of sight, physical and
chemical combat are the only other defense techniques, according to About.com.
Physical
combat is usually fighting face-to-face, using violence. My group mates and I
had decided that we would not research on our organisms all at once but move
down the food chain. For example, I, as the one creating the primary consumer,
would design the organism after the predators of my organism have been planned
and designed so that I do not make my organism too strong or too weak, which
would not maintain a healthy food web. One of my organism’s predators has two
poisonous spikes on its face, which would kill with just one stab with its
spikes. Hence, it would be impossible for the herbivore to defeat this predator
since it uses toxic substances as its own defense mechanism. The other predator
of my organism has spikes, which can be shot out, to attack its prey, extremely
strong limbs and deadly sharp claws. Due to the fact that these predators are
physically very capable, it is highly impossible for my organism to defeat them
and thrive. Hence, I decided to learn more about chemical combat and aid my
organism with this ability.
Chemical
combat refers to releasing substances, which would either mislead the predator
or kill it. Simply killing the predator would cause a great drop in the
population of the predators of my organism and result in a unbalanced food web.
Therefore, after much reasoning, I decided for my organism to use delusion and
escape its predators. From my research, I learnt that there were extremely strong
winds in the Alpine Tundra. In order for my organism to attack its predators
from a distance, the chemical substance that my organism releases must somehow
be transported to the predator.
In
this case, the wind would the only means for the substance to reach the
predators. Moreover, any liquid substances would not be able to be carried by
the wind and scent can be the only mode to delude the predator. I researched on
how one can release a smell that would be able to travel a reasonable distance
away without losing its essence. While trying to find some useful information,
I stumbled upon humans’ mechanism of flatulence. In any place, we can smell
one’s flatulation even when we are a distance away. This is due to the fact
that the gas is carried by the air and eventually, enters our nose. This
sparked an idea in me that a similar mechanism could be used in my organism. To
make the organism more unique, I will make it such that it would squirt out a
powder, which gives out a strong, pleasant smell and this scent would be
carried by the strong winds towards the predator.
Since
my organism would know that the scent it travelling in the direction of the
wind, and the predator would be following this scent, the organism would know
that it has to run against the wind in order to run away from the predator.
Even though the predator might have been completely deceived by this, it may
still realize that it has been tricked and hence, continue to try to hunt down
my organism. Therefore, after having squirted this powdery substance, my
organism would need to run away as fast as possible and move the farthest
distance possible away from the predator. One great disadvantage of this method
is that the organism would have to run against the wind which makes it all the
more slower due to air resistance. As a result, in order to ease this
situation, I went to read up on ways to overcome air resistance.
Air
resistance is similar to water resistance. It is about friction and how this
force is restricting the movement of organisms. Water resistance would mean
that almost every aquatic animal would have to be adapted to overcoming water
resistance as the tide may change direction any time. When we say aquatic
animals, the first thing that comes to my mind is fish. Fish have a special
body shape, which helps them in swimming. I needed to get hold of more
information about this body shape, which eased their movement and after some
basic searches, I found it – THE STREAMLINED BODY SHAPE. The streamlined body
shape basically meant that the animal’s body was narrow at the two ends and
broad in the middle. After reading up about how millions and millions of fish
possessed this body shape, and it successfully helped such a diverse range of
creatures, I plan to give my organism a streamlined body shape which would
likewise ease movement when it is running against the strong winds.
Last
but not least, another physical feature of the organism, which would assist it
in its escape. It would be of no use for the organism to be slow after all of
these adaptations that it was going to be endowed with. Its body had already
been defined. Its limbs!
To
give the organism muscular legs for greater speed when running, I went to
research on the anatomy of the human leg muscles and learnt much in greater
detail about each muscle and how it does its part during the motion of running.
The muscle that I thought would increase the speed of the organism of the best
would be the calf muscle.
I
read up that the calf muscle mainly helps to flex the ankle and straighten the
foot to help the human to push off the ground. Hence, I thought that I would
engineer the organism such that it has extraordinarily strong calf muscles,
which would help it to push off the ground with maximum force and hence, propel
itself further and faster.
All
in all, my research tremendously helped me grasping many concepts pertaining to
defense mechanisms and locomotion. As I researched and came across new and
exciting bits of facts, I made improvements to my organism along the way as I
have elaborated above, and ruled out certain features through reasoning. The
information gathered allowed me to pick the best features, from the options
available, and hence, make a well-adapted herbivore living in the Alpine
Tundra.
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