Each
living being uses different methods to satisfy its needs for
food. In this chapter, you are going to read about the tactics
used by ants when looking for food, about their communications
and the competition among them to get to the food. All the tactics
tried by such a small creature to obtain its food shows, as
in previous chapters, the greatness, magnificence and power
of Allah, the "Supreme Possessor of Intelligence" Who has created
them.
How is a "family" with a population in hundreds of
thousands fed? One of the most important things needed for survival
of the colony is resolving of the food problem, and each ant in
the colony has its share of this responsibility.
As they do in other aspects of their lives, the ants
carry out systematic work in solving the nutrition problem. Old
worker ants are sent out as foragers to survey the land around
the nest to find food resources for the colony which has a population
of hundreds of thousands (sometimes millions). When forager ants
find a food source, they gather their nestmates around the food
in numbers which depend on the size and richness of the source.
Ants solve the food problem by a very strong communication network
and their generosity, which never says "Only me". .
Ants That Feed Each Other
Ants
of different species try not to get in each other's way while looking
for food. Each one determines a path for itself to get to the food
source. If ants go into another colony's territory by mistake, this
becomes a declaration of war. In such a situation, forager ants
come back to the nest right away and close the nest entrance and
all colony members come together to defend their colonies against
danger.
Then, how do the ants feed during
this fight, when they have no opportunity to bring in food?
At this point, a feature of the ants
that distinguishes them from other living beings emerges. During
this period when they cannot search for food, all colony members
feed on the food stored in the crops of young workers
In fact, this sharing technique is one they use
all their lives, and not only at special times. Ants not only
transport the liquid droplets, but they feed each other mouth
to mouth. Once a forager enters the nest laden with liquid food,
she stands still for a period of time, swinging its head from
side to side while waiting for a nestmate to approach; or else
it moves directly toward nestmates and presents them with the
food droplet held between her widely opened mandibles.84
This liquid food exchange, done by regurgitating which provides
quick distribution of the food to the colony is, in fact, quite
an impressive example of sharing. Also husks and seeds brought
to the nest are consumed as well by all of the ants together.
Thus, the food requirement of the whole colony is satisfied without
any problems.
This system is one that makes it
necessary to admit of the existence of a supreme designer. It
is a reality that a chain of random events cannot form such a
storage system so complex and requiring great sacrifice. What
is more, each ant comes to this world knowing this system. That
is, the necessity to share its food has been ingrained in it before
its birth and not after. Not only has this sense of sacrifice
been inspired in it, but because a special mechanism is needed
to present the food it has saved in its crop, its body structure
has been designed to make this sharing possible. This sharing
event realized among ant colonies once again renders the word
"chance" insufficient or even meaningless, due to the sense of
self-sacrifice being much in evidence. As we have emphasized many
times before, the theory of evolution assumes the existence of
a full-fledged competition and life struggle among all living
things. Therefore, examples of self-sacrifice among ant species
are acts most difficult to explain. Ants living under a feeding
system based on sharing are proof that they do not act in the
way suggested by the theory of evolution. They are not engaging
in a random "fight for survival" but are rather performing the
duties given to them (according to the Qur'an "revealed to them")
and thus they are able to transform their colonies with hundreds
of thousands or even millions of members into a true civilization.
In the Qur'an, in surat an-Nahl,
Allah describes the "revelation" that makes it obligatory for
the animals to perform certain tasks given to them by Him:
And your Lord revealed to the bee:
"Build dwellings in the mountains and the trees and also in the
structures which men erect. Then eat from every kind of fruit
and travel the paths of your Lord, which have been made easy for
you to follow." From inside them comes a drink of varying colours,
containing healing for mankind. There is certainly a sign in that
for people who reflect. (Surat an-Nahl: 68-69)
The Qur'an, of course, does not list the animals' special duties
through Allah's inspiration one by one. The honey bee is just
one example. Yet, when we look at the ant, we can see that this
small being, which performs as perfect tasks as the honey bee,
and which is at least as generous, social and loyal, acts under
a similar revelation.
RatIonal TechnIques In CarryIng
Food
The
discovery by approximately 8800 known ant species of the food
sources they need, and their carrying them to their homes are
done by different methods. In certain species, ants hunt on their
own and carry the food individually. Yet in others, hunting is
done as a group and they carry and defend their food together.
If the food they find is in suitable
dimensions for them, ants usually carry it alone. If the food
is too large for a single ant to carry or if it is in small piles,
all within a particular area, they give out a poisonous hormone
to prevent others from coming into the territory. Then they go
to call other workers, large and small, to carry the food.
The perfect division of labour governing
the lives of ants is observed here also. Large ants tear up the
food and defend it against strangers, while smaller ones take
care of carrying the pieces home. A worker lifts the food with
its mandible and keeps it in front of it while returning home.
When there is a group, the substance they can carry becomes even
larger. They lift the food by using one or two legs. At the same
time, they bite the food, opening their mandibles. Workers apply
different techniques, depending on their positions and their directions.
Those in front walk backwards, pulling the food. Those at the
back walk forward, pushing it, and those at the sides give support.
By this technique, it is possible to carry weights many times
greater than what a single ant can carry. In fact, it has been
observed that ants acting in unison can carry a weight 5,000 times
as heavy as that carried by a single worker. 100 ants can carry
a large worm at ground level, moving it 0.4 cm per second.
Ants and Odor Trails
Communication by trails (following
of odor trails) is a technique that is commonly used by ants.
There are many interesting examples on the subject:
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An ant finding a
food source leaves a chemical trail on the ground with the
needle at its rear. This trace helps its nest mates reach
the food source.
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An ant species living in American
deserts secretes a special odor produced in its venom sac if it
realizes that the dead bug it has found is too wide or heavy to
carry or drag. Its nestmates far away detect the odor and start
moving towards its source. When ants have gathered around the
victim in sufficient numbers to carry it, they start carrying
it towards the nest.
When fire ant workers
leave the nest in search of food, they may follow odor trails
for a short while, but they eventually separate from each other
and begin to explore singly. When a fire ant discovers a food
source, it heads home at a slower pace. Her entire body is held
closer to the ground. At frequent intervals, the sting is extruded,
and its tip is drawn lightly over the ground surface, much as
a pen is used to ink a thin line. Thus, it leaves a trail behind
it that leads to the food source.85
Ants Who Serve As Compasses
Food-seeking ants carry out
a task in a manner which is very hard to explain. They go to the
food source following a wiggly path, but when they return home,
it is via a short and straight line. Then, how is it that ants
that can see only a few centimetres ahead of themselves, march
in such a straight line?
To find an answer to this question,
a researcher called Richard Feynman placed a clump of sugar at
one end of the bathtub, then waited for an ant to come and find
it. As this pioneer ant returned home with news of the feast,
Feynman followed the wiggly path it followed. He then traced the
path of each successive ant to follow the trail. The successive
ants, he found, did not stick exactly to the trail; they did better,
cutting corners until the trail became a straight line.
Later on, inspired
by Feynman, a computer scientist, Alfred Bruckstein, proved mathematically
that successive followers really do make a wiggly line straight.
The conclusion he arrived at was the same: after a certain number
of ants, the path length shrinks to some minimum value: to the
shortest possible distance between two points - namely, a straight
line.86
What we talked about above is of
course, something which would require great skill on the part
of a human being because he would certainly need to use a compass,
a watch and at times much more complex instruments for any distance
relative to his own dimensions and would have to have a perfect
knowledge of mathematics. In contrast to this, the guide an ant
has in exploring on its own is the sun, while its compass is the
position of branches and other natural landmarks. Later on, ants
remember their shapes and can thus find the shortest route to
their nests although they have never had any prior knowledge of
it.
This is very easy to say but very
hard to explain! How can these tiny living beings do such calculations
when they have neither a brain nor the capacity to think and judge?
Imagine that you leave a man in an
unfamiliar forest. Even if he knows the direction to go, he will
have a hard time finding his way and will probably get lost. In
the meantime, it will be necessary for him to look around carefully
and think about which would be the best way to go. Yet, ants act
as if they are encoded on the matter of path finding. In the evening,
they can easily find and follow the road they took to find the
food in the morning, even if all the conditions have changed.
The Perfect HuntIng TechnIque
Certain ant
species use their teeth to eat spider eggs, caterpillars, insects
and termites. Many ants (for example Dacetine) specialize in non-winged
insects. These insects live in groups in the ground and in decayed
leaves. The bugs have extensions under their bodies in the form
of folded forks. When they rock and get up, this organ throws
them into the air and forward like a miniature kangaroo. Dacetine
ants use their mandibles like an animal-catching trap against
this very effective manoeuvre. When the food-seeking ant receives
the odor of an insect with its antennae, it lies in wait, opening
its mandibles 180 degrees. It locks the small teeth in its mandible
by pressing onto its upper palate. It inspects its surroundings
by moving its antennae forward. Then the ant approaches the insect
slowly. When its antennae touch it, the little insect is at a
distance where its apical teeth can reach it. When the ant lowers
its palate, the mandible suddenly snaps shut and the insect is
squeezed between the teeth as if impaled.87
The
above-mentioned ants never miss their prey, because they have
mandibles with the fastest reflex in the world.
Our speed of blinking
the eye is very slow compared to the biting speed of the trapper
ant. While the opening and closing of the eyelid takes about one
third of a second, the mandibles of these ants (Odontomachus bawi)
work almost 100 times faster. The fastest hit observed took in
0.33 milliseconds.88
The
mandibular structures of trapper ants are approximately 1.8 milimetre
long. In the interior sections, there is a sac full of air attached
to the trachea. This system ensures exceptionally fast movement
of the teeth. The mandibles act as a miniature mouse trap. When
hunting, the mandible is fully opened and ready to close any time.
The biting speed slows down near the end of the biting process.
To prevent the teeth hitting each other very hard, the mandible
movement is slowed down by the special muscle system.89
It is impossible for such a hunting
mechanism to have developed through evolution. That is, without
conscious design and at random.
The only acceptable truth is that
the power who has created the ants with all their miraculous characteristics
and perfect life styles is Allah, Who is sovereign over all of
nature and the universe.