Articles
Marvels
of the Monarch
by Donna L. O’Daniel February 14, 2008
What
animal has a brain the size of a pinhead and yet can pinpoint a
location 3,000 miles (4828 km) away and navigate there with an accuracy
of 100 feet (30.5 m)?1 It is the most famous butterfly in North
America—the monarch. But the winged adult is just the fourth
(and final) stage in this insect’s marvelous life cycle.
A Tricky Life Cycle
The monarch butterfly (Danaus plexippus) begins life as an egg (ovum)
in its mother’s body. Monarchs usually lay their eggs on a
milkweed flower petal or leaf. Their eggs are very small, approximately
the size of a pinhead and slightly oblong.
After 3–6 days, the caterpillar (larva) emerges from the egg.
Over the next 17 days or so, the caterpillar grows and molts four
to five times, shedding its exoskeleton (“outer skin”)
to make room for new growth. Under the constant threat of being
eaten by predators, such as ladybugs and praying mantises, the caterpillar
obtains poisons from its host plant, the milkweed (genus Asclepias).
These poison compounds are called cardenolides or cardiac glycosides,
which can sicken any animal foolish enough to eat the caterpillar.
Vertebrate predators, such as the blue jay, have been observed throwing
up after eating a monarch.
Upon
maturity, the caterpillar seeks a suitable site, usually under a
log or tree limb, on which to attach and transform itself into a
chrysalis (pupa). “Inside the pupal exoskeleton, the complete
disassembly, or chemical dissolution, of the larval body occurs,
and areas of undifferentiated cells that have persisted through
all of the molts of the larvae . . . begin to form the tissues of
the adult butterfly.”2
After eight days, the adult (imago) emerges. Depending on the time
of year, the adult lives anywhere from one to eight months.2 At
this stage, the monarch performs the second great marvel of its
life: migration.
The
Great Migration
The
monarch is the only butterfly that migrates on a regular basis both
north and south, as many birds do.
Most monarchs from eastern North America migrate in the fall to
an area west of Mexico City. This journey can take as long as three
months.2 Monarch butterflies west of the Rocky Mountains winter
in central and southern California, but recent findings indicate
that some western populations may winter in Mexico as well.3
The long journey from eastern North America ends in the high fir
forests of a mountain chain in central Mexico, known as the Transverse
Neovolcanic Belt. Once at their cool wintering sites, hundreds of
millions of them slow down their activity for a period. They blanket
the fir trees, creating one of the great spectacles of the natural
world.
The migration is even more mind-boggling because the butterflies
have never seen their wintering grounds before. As many migratory
birds find their wintering destinations without ever seeing them
first, monarchs find their wintering site by instinct alone.
Once the migration back home begins in the spring, the females usually
fly far enough to find host plants, lay their eggs, and die. During
the spring and early summer, several generations are usually required
before the butterflies reach northeastern North America. From there
at summer’s end, they once again begin their long southward
migration.
The Origin of Monarchs
Evolutionists tell us that butterflies evolved, while the Bible
tells us they were created by God. What does the fossil record tell
us? Evolutionary lepidopterist Phil Schappert admits, “Much
of the evolutionary history of the butterfly is sheer speculation
anchored by inferences made from infrequent observations of other
insects in the fossil record.”4 The sparse fossil record,
which has only about four dozen known fossils, reveals that butterflies
have always been butterflies.
“The oldest ‘true’ butterflies . . . are swallowtails
(Papilionidea) from Texas that are uncannily similar to the modern-day
. . . Baronia brevicornis . . . that is still found in Mexico,”
says Shappert. “Together, all of the fossil evidence suggests
that all of the modern families of butterflies were already well
developed and differentiated by the beginning of the Cenozoic era,
some 66 million years ago.”5
Evolutionists also have no naturalistic explanation for the complete
metamorphosis of a butterfly. Where did the information come from
for such a complicated—and seemingly unnecessary—life
cycle?
Schappert admits that there is no plausible evolutionary explanation:
“All of a sudden, they have wings where there were none before,
and even the long, articulated legs have become very different from
the short stubby ones of the larva . . . . The complete re-creation
of the body of a caterpillar into the body and wings of a butterfly
is, without doubt, one of the wonders of life on Earth.”6
Not only is it a wonder; it is a miracle. As a well-known lepidopterist
has stated, “The amazing process of metamorphosis—the
butterfly’s transition from egg to caterpillar to pupa to
winged adult—is well known and fairly well understood, but
it’s still rightly regarded as a miracle.”7
The best evidence for the origin of butterflies, in all their beauty
is, “In the beginning, God created . . .” (Genesis 1:1).
Donna O’Daniel earned her MA degree from the University of
Texas (Austin) in biological sciences. She has worked as a wildlife
biologist on Johnston Atoll, the Northern Marianas, Madagascar,
and in numerous American states. She has also lectured on seabirds
and sea turtles.
Footnotes
1. Jules Poirier, From Darkness to Light to Flight: Monarch—the
Miracle Butterfly (El Cajon, California: Institute for Creation
Research, 1995).
2. Phil Schappert, A World for Butterflies: Their Lives, Behavior,
and Future (Buffalo, New York: Firefly Books, 2000). Back (1) (2)
Back (3)
3. H. Dingle, M. Zalucki, W. Rochester, and T. Armijo-Prewitt, “Distribution
of the Monarch Butterfly, Danaus plexippus (L.) (Lepidoptera: Nymphalidae),
in Western North America,” Biological Journal of the Linnean
Society 85 (4): 491–500, 2005.
4. Schappert, p. 50.
5. Ibid., p. 51.
6. Ibid., pp. 35, 151.
7. Jim Brock and Kenn Kaufmann, Butterflies of North America (Singapore:
Hillstar Editions L.C., 2003), p.13.
SEE MIGRATION MAP AT:
http://www.answersingenesis.org/articles/am/v3/n2/marvels-of-monarch
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