Deceit is not a trait that is normally considered
desirable in
human social behavior. Deceit, however, when applied to different
aspects of biology can yield fascinating results. Over millions of
years, nature has evolved several species with the remarkable ability
to effectively mimic other things in their environment. Examples of
such mimicry in
nature can range from displays of simple camouflage, to animals such
as a stick insect that can effectively mimic a stick "down to the last
fine details of fake buds and leaf-scars" (Dawkins Watchmaker 82). The
clever development of mimicry is not unique to animals or even genetic
biology in general. Several species of plants have evolved with
intricate
methods of deception to propagate their genes. Many examples of mimicry
can also be seen in artifacts; these artifacts may mimic other
artifacts,
or organisms in genetic biology. In the world of biology we can find
some
especially interesting comparisons between different types of mimics.
Often the survival of replicators for mimicry exist for different
reasons
in different areas of biology, but throughout biology there are many
niches
that mimics may find to occupy. Mimicry can be found throughout the
biological
world; we can see mimicry in genetic biology in organisms, and we can
see
mimicry in memetic biology in artifacts.
There are two different categories of genetic mimicry
that can
be looked at in depth, but first the general principles for mimicry in
genetic biology must be established. The precise accuracy of mimics in
nature is so great that we may have a hard time imagining how genetic
evolution could produce such vehicles. As often is the case, Professor
Richard Dawkins provides a complete, yet easy to understand,
explanation of how such
close mimics may evolve in his book, The Blind Watchmaker. Critics of
gradualism, or Darwinian theory in general, assert that in order for an
organism such as some sort of “stick insect” to have gotten its high
level
of mimicry to a stick, the insect must have gone through a long series
of gradual changes from, presumably, some sort of other insect that did
not resemble a stick. This is the case according to gradualism, but,
as the critics often persist, what are the benefits in looking only
slightly,
say one percent, like a stick? Would that not only fool a predator with
very poor vision? If critics of gradualism are right, this would mean
that
all forms of mimicry would have to coevolve in some way with the eye
sight
of predators. Mimics and predators coevolving in all cases of evolution
would
be highly unlikely.
The claim that looking only slightly like a stick would
only
fool a predator with very poor vision, however, is not accurate. An
example of why the claim is not accurate can be found when we consider
distance into the equation. If we imagine some sort of insect resting
on a branch where the insect resembles part of the branch to a predator
by only one percent, that insect will probably not last long to a
predator with keen eyesight from a moderate distance away. If, however,
that predator happens to be farther away, the predator may not be able
to tell the difference at glance between the insect and a branch.
Whatever this critical distance is that the predator would overlook the
insect is irrelevant; no matter “how poor is the resemblance of an
insect to a stick, there must be . .
. some degree of distance away from the eye, or some degree of
distraction of the predators attention, such that even a very good eye
will be fooled by the remote resemblance” (Dawkins Watchmaker 83). The
insects that look more like a branch would naturally be able to deceive
predators at shorter distances, so we can find reason to see a gradual
process leading up to near perfect mimicry. Thus in the natural world
we can see a gradual evolution of animals that are selected based on
their closer resemblance to whatever they are mimicking.
In dealing with the concept of mimicry in genetic
biology, we
may separate mimicry into the two categories of Batesian mimicry and
Mullerian mimicry. Batesian mimicry gets its name from a man named
Henry Bates who discovered that "many butterflies which had similar
color and pattern of the wings were in fact not closely related but
were members of different families" (Mimicry online). Realizing the
mistakes he had made in classification, Bates quickly recognized how
such mimicry could be shaped by natural selection. Darwin accepted
Bate’s results, as the results were “what [Darwin]
needed to confirm his own theory” (Ferrari 124). The concept of
"Batesian
mimicry involves a palatable, unprotected species (the mimic) that
closely resembles an unpalatable or protected species (the model)"
(Salvato online). The "signal receiver" is the organism that is to be
deceived by the mimic species (Miami online). In Batesian mimicry, the
mimic species will take on characteristics of the model species to
obtain
some sort of advantage in fitness by deceiving the signal receiver.
Perhaps one of the best examples of Batesian mimicry
found in
nature would be that of Orchids such as Orphyrus sphegodes. Orchids
that
belong to the "genus Ophrys" deceive their signal receivers by way
of sexual mimicry by offering "male wasps, bees, and flies-depending
on the species of Ophrys-the illusion of sexual contact with a female
of their own species" (Trivers 401). Male insects are "strongly
attracted
to these flowers," and attempt to copulate with the flowers. As the
male
enters this sort of "pseudo-copulation" as Trivers describes it, the
male
picks up pollen from the flower (403). This pollen is then transferred
to
other flowers as the confused insect searches for a mate.
Although the flower may be remarkably similar in
appearance to
a female of the species, the most important mimicry is likely the
strong scent that the flower will produce. In a study of bees, the
powerful perfume of the orchid strongly resembled that of the female.
In fact, of fifteen substances that are sexually stimulating to male
bees, the study found that "the orchid flower turned out to produce 14
of them" (Milius
11). These scents that are put out by the flower may even be stronger
than
those made by the female. Because the orchid is so much larger than the
insect that it mimics, "the cost of producing sexual odors should,
other
things being equal, be lower to the plant" (Trivers 405). In other
words,
since the orchid has more resources overall, more total energy may be
invested
in attractive scents for male insects. After the scent of the orchid
gets
the signal receiver’s attention, the insect will make its way to the
flower
that resembles the female of the insect’s species. The orchid has also
evolved “a series of rigid hairs that mimic the hairy abdomen of
the female insect” that ensures the male will be well aligned on the
flower to receive pollen from the orchid (Trivers 405). The male
receives the pollen, though is
unable to successfully mate with the flower. He flies off in search of
another female of his species.
Although the evolutionary development of such an
accurate
mimic may
be difficult to imagine, scientists have uncovered several clues to the
origins of the orchid. The powerful aphrodisiac appears to have
originated from “the waxy coating on part of the bloom;” this suggests
that the powerful scent “may have had its evolutionary roots in
waterproofing” (Milius 11). All that would be required for an
evolutionary advantage would be a scent similar enough to the female
insect to confuse a few males of the same species. Those orchids that
developed “molecules most similar to those of the female” of the signal
receiver would have the best chance of pollination, and thus
reproduction (Luntz 9). Other similarities between the female companion
of the male signal receiver and the orchids would be profitable for the
orchids to adopt. Finally the orchid would be shaped into the plant the
orchid is today, bearing a striking resemblance to the female in a
species of insect.
Mimicry does not have to be so clear cut, where one
species
mimics another species. Sometimes, such as in the case of "the
ten-spined stickleback fish," the male of the species may actually
mimic the female (Trivers 406). This is an especially interesting
example of deception, and I
will not go into detail with the example; instead I refer the reader to
Robert Triver's book Social Evolution to show that Batesian mimicry is
not confined to one species deceiving another species.
The second form of mimicry in genetic biology to discuss
is
that of Mullerian mimicry. Mullerian mimicry was suggested by a man
named Fritz Muller in the late nineteenth century. Muller studied
species of butterfly and determined that "two brighly [sic] coloured
distasteful butterfly species (co-models) that share a single
warning-colour pattern would benefit" in sharing the burden of teaching
predators to avoid the species (Kapan 338). By both species sharing
similar traits, fewer butterflies of each species will pay the price of
being eaten because a predator need only try one species before knowing
to avoid the bright colors that the two species have in common.
An example of Mullerian mimicry occurs between the
monarch and
the viceroy butterflies. This is an especially interesting example
because the viceroy and the monarch were originally thought to exhibit
Batesian mimicry, but now several “relationships involving what were
once thought to be Batesian mimicry are being reevaluated” (Salvato
online). The viceroy was once “thought to mimic the Monarch,” but has
been discovered in
recent studies “to be as distasteful to birds as the Monarch” (Salvato
online). This discovery was made by David B. Ritland and has been
published in Evolution. In Ritland’s experiment, he used “red-winged
blackbird predators” to confirm that the viceroy displayed Mullerian
mimicry (918). Ritland’s results gave quite a shake to the biological
community. The results
overturned “a theory that has been part of standard textbooks for
decades”
(Maugh 27). Until Ritland, no one had bothered to study the relations
between
the viceroy and the monarch. Ritland certainly deserves due credit for
his just skepticism of a long held assumption.
Monarchs rely heavily on the milkweed plant for their
survival. The
milkweed "serves both as a food source and breeding ground for the
butterfly throughout its life cycle" (Krasean j1). The milkweed also
provides the Monarch with the poison the butterfly needs to evade
predators. This poison wasn’t discovered “until the 1960's,” when
researchers found that “cardenolides were the chemicals in milkweed
that made monarchs toxic
and bitter tasting” (Interactions online). This toxic tastes horrible
to predators, and similar toxins in the viceroy butterfly also make the
viceroy foul tasting. As both the viceroy and the monarch developed
these
nasty chemicals, predators learned to avoid the colors of each species.
After attacking one butterfly of the species, a predator would be
unlikely
to make the same mistake in attacking another butterfly of the species.
The predator might, however, attack a butterfly of another species with
similar toxic chemicals, for that species would exhibit a different set
of traits to learn. In this situation, any butterfly that might look
similar
to another species of toxic butterfly would benefit; or, more properly,
any gene that resulted in a phenotypic effect of a butterfly such as
the
viceroy that is similar to the phenotype of a monarch would spread well
because a predator would be more likely to know to avoid such traits.
This
principle, naturally, works in reverse as well, so butterflies evolve
to
share similar traits because predators only have to learn the warning
signs
of one species of butterfly before knowing not to attack. This benefits
both
species, though some scientists now question exactly how much.
Researchers have pointed out that both species exerting Mullerian
mimicry “are unlikely to be equally unpalatable,” and have argued that
“the more unpalatable
species will suffer the cost of increased predation because the
presence
of the more palatable mimic will increase its perceived
palatability”
(Dawkins & McDougall 8). Whether this is the case remains unclear,
and
more studies of mimicry are necessary to make confirmations. Other
scientists
have gone so far to say that Batesian “mimicry is unlikely in the vast
majority
of cases (Maugh 27). Whatever the case may be, we can still see the
principle behind Mullerian mimicry and the fundamentals of mimicry in
genetic biology in general. I don’t believe these concepts of mimicry
are restricted to
genetic biology, however, and I would like to provide some examples of
how mimicry might work in the world of memetics and their vehicles.
In the world of memetics, artifacts often mimic similar
traits
of other objects. Though we obviously can see similarities in
artifacts, the principles of mimicry in artifacts are different than in
organisms. An important aspect of memetic replicators to take into
account is the high amount of horizontal transmission that goes on. In
genetic biology, horizontal transmission is rare; genes are passed via
vertical transmission from parent to offspring. Memetic transmission is
different. If a single meme spreads well in one artifact, that meme may
quickly spread to other artifacts as well. If the meme for an
artifact to be constructed of plastic spreads exceptionally well in one
type of artifact, that meme may be extracted and applied to another
artifact by means of the human brain. For this reason there is a
difficulty in separating a true artifactual mimic from two artifacts
with common memes. The reader might even wonder if, in fact, any type
of mimicry can be expressed in artifacts. I will return to this
question later.
Another important principle of mimicry in artifacts to
point
out before providing examples is the reason artifacts may be mimicked,
or, in other words, the reason replicators that produce an effect
mimicking the effects of other replicators survive. In organisms, the
reason organisms evolved to mimic other species is often to avoid
predators or to gain some sort of reproductive advantage. Genes that
proved likely to express certain phenotypes confusing the signal
receiver would survive because confusing the signal receiver heightened
the gene’s chance of propagation. A similar phenomenon occurs with
memes, but the reason for confusing the
signal receiver is often different. Instead of avoiding predators,
artifacts
that mimic other artifacts may survive because they require fewer
resources
than their model. We can examine a type of Batesian mimicry in
artifacts
as a cheaper artifact may parasitize a more expensive artifact by
confusing
the signal receiver; the signal receiver is almost always a human
being.
In the case of this mimicry, the signal receiver may be fooled into
acquiring
the artifact; the signal receiver is likely to have memes that move the
signal receiver to invest as little of the receivers own resources into
acquiring the artifact as possible, and benefiting by receiving the
most
resources as possible. When I use the term resources, I am referring to
a value, not a pure amount. Two tons of stone probably will not be
considered
as valuable to the signal receiver as a pound of gold. To simplify the
concept, the signal receiver, most likely a human being, will invest as
little as possible while trying to benefit by receiving as much as
possible
from the exchange. This opens up a niche for artifacts to try and
deceive
the signal receiver by making their value appear higher than their
value
truly is, and making their cost seem lower than the artifact’s cost
should
be. A type of mimicry occurs when one artifact of lesser value attempts
to be passed off as another artifact of greater value for more than the
mimic is worth.
To illustrate this, perhaps confusing, concept, I will
use an
example from the clothing industry. Sometimes in the clothing industry,
designer clothes are found to be counterfeit. The clothes that are
produced
are crafted to look like a more expensive brand of apparel with
ultimately less cost of production. The popular name brand Tommy
Hilfiger has often been the model for mimicry in clothing artifacts. In
the year 2000, Hilfiger announced that the company was suing Goody’s
Family Clothing for “selling counterfeits of its products” (Tommy C.4).
The company of Tommy Hilfiger announced that Goody’s Family Clothing
was profiting off of “unauthorized imitations of the company’s flag
trademark” (Tommy C.4). Pairs of jeans were marketed by Goody’s stores
that very closely resembled those jeans of Tommy Hilfiger. Naturally
the mimic jeans were cheaper to produce, so
the jeans could be sold at a cheaper price with some consumers unable
to
see the difference between the mimic and the model jeans. The mimic
expresses a type of Batesian mimicry on the model because the imitation
jeans reduce the amount of model jeans being sold. Goody’s jeans
weren’t the only mimics of Hilfiger. A year earlier the company of
Tommy Hilfiger “charged [Wal-Mart Stores Inc.] with selling counterfeit
clothes” (Moore 2). Wal-Mart “agreed to pay $6.4 million” to settle the
dispute (Moore 2). At another store, Hilfiger jeans were found to be
sold “for a third of the normal price” (Bryan B.1). The jeans were, as
all the other examples, mimics of the actual brand, but the memes for
the mimics survived as long as they were being sold and bought.
Clothing is not the only example of this type of memetic
mimicry. Beautiful and expensive jewelry that can be imitated when less
expensive but similar material opens up a suitable niche for mimics. A
diamond, being expensive and rare, is often substituted by the less
valuable cubic zirconium. Because a cubic zirconium bears such a strong
resemblance to a diamond, the stone may confuse the signal receiver
into investing more resources in the cubic zirconium than the cubic
zirconium is actually worth. One woman took her grandmother’s ring to a
jeweler hoping to update the ring’s style. When the ring was returned
to the woman, one diamond that was returned “was actually [a] cubic
zirconium” (Budish 7L). The less
valuable stone was returned with the effect of mimicking a more
expensive diamond, so memes for the effective mimic survive. In this
woman’s case, another jeweler “verified the substitutions and damages
by comparing the returned ring with the prior description” (Budish 7L).
The woman was fortunate, but her case is actually not uncommon, and
effective mimics of more expensive jewelry are able to survive
But all of this talk about people swindling their way to
greater gains may confuse the basic principle of the nature of
replicators. When counterfeiters craft products that make the
counterfeiters more money, the forgers are the ones who benefit from
the artifacts mimicry. Shouldn’t the survival of artifacts, like the
survival of organisms, depend on the replicator as the fundamental
unit? The key concept to remember here
is that when memes are replicated their success will depend on how well
the memes can survive in their environment. The environment that memes
replicate in is, almost entirely, the human brain. When a counterfeiter
enjoys reaping the benefits of making a mimic of an artifact, the memes
for making artifacts will have a better chance of surviving. As a
result, memes that appear
to benefit the counterfeiter will also benefit memes for
counterfeiting.
This is not always the case, however, and sometimes memes may indeed
spread
that do not benefit, but actually harm, the person that houses a
particular
meme or set of memes. A simple example of such a case would be a meme
for
committing suicide.
One replicator is often complex enough, but throwing two
different replicators together is enough to boggle the mind. Figuring
out the dynamics between genetics and memetics may be very difficult,
and I will
not attempt to calculate how one replicator influences the other at
this time. What I do intend to show, however, is that the two will
occasionally
overlap in mimicry. There is no reason for us not to expect memetic
life
not to mimic genetic life, and there is no reason, in due time, that
genetic
life should not mimic memetic life. The latter may be more difficult to
show because of the much higher rate that memes are exchanged.
Organisms
that mimic artifacts are abound. The most recently hyped example of
such
an artifact came when “Sony came out with its first four-legged Aibo
robot
in 1999" (Guernsey 3). The Aibo robot will mimic the phenotype of a dog
by being able to “respond to 75 voice commands and move around” similar
to a normal canine produced by strings of DNA (Guernsey 3). The reason
memes for such an artifact survives are not hard to figure out. The
idea
of a robotic mimic to a dog that doesn’t make a mess of the backyard or
tear up the morning paper may be quite appealing to some owners. In a
study “at Purdue University,” the robotic pets were shown to exhibit
“enormous
psychological value to the elderly” (Goddard 13). Another artifactual
mimic
of biological life arises for a completely different reason. Decoy
hunting
ducks are used by duck hunters to mimic real ducks into the area. The
recent
invention of “motorized, revolving- wing duck decoys, or moto-ducks”
have
been so effective, that the use of these “moto-ducks” has caused a
“30-percent
decrease in resident mallards” in the state of California (Doty 25). In
the case of artifactual mimicry, both the model organisms and the
mimics
will be effected, so interactions between memes and genes are to be
expected.
An example of an organism mimicking an artifact will be a lot more
difficult
to find because of the fact that the rate of evolution for artifacts is
so much faster than the rate of evolution for organisms. The only
candidate
that came to my attention was that “of the peppered moth, Biston
betularia”
(Miller & Levine). The peppered moth is an example of camouflage in
that
the species of moth changed to a darker color during the industrial
revolution.
The darker moths hid from predators better against the dark soot that
was
being produced on trees as a result of industrial activity. While this
more
effective camouflage is not as impressive as an orchid mimicking a
female
wasp, the concept still is much the same.
From orchids to jewelry, we can see a examples of
mimicry
throughout the biological world. Organisms can mimic other organisms;
artifacts can mimic other artifacts, and both organisms and artifacts
may mimic each other. There is no reason to think that the two
replicators will
remain separate and genes and memes should and do interact in ways that
effect each others survival. Mimicry when dealing with organisms can
be separated fairly cleanly into the categories of Batesian mimicry
and Mullerian mimicry, but artifactual mimics often evolve to imitate
other artifacts of greater value. My reason for pointing out these
examples
is simply to open the reader up to similarities between artifacts and
organisms that may or may not be caused by common properties of
replicators
that produce these survival machines. Although the idea of mimicry
being
produced by an effect because of the properties of replicators is
appealing,
and I hope my own argument stands ground, we must still be careful not
to get out of hand with the parallels between organisms and artifacts.
Organisms and artifacts are both phenotypes of different replicators,
so
they both operate on the principles of any replicator, but that is
where
the similarities end.
Mimicry as a whole is a fascinating aspect of biology
that
lately has not deserved enough attention. More studies in the field of
genetics in particular might open up new insights to the dynamics of
mimicry in organisms. There is still much confusion over how the
mimicry of works, and whether or not many mimics function through
Batesian mimicry or Mullerian mimicry. In contrast, mimicry in
artifacts is my own new idea, and thus is still very new. My hope is
that this idea takes off naturally along
with the concept of artifacts as vehicles for memes. If nothing else,
the idea of mimicry in both artifacts and organisms is an interesting
thought experiment, and might stir some more interest into studying the
lives of mimics.
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