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A dragonfly has a life span of more than a year, but very
little of that life is actually as an
adult dragonfly. There are three stages of the dragonfly
life cycle, the egg, the nymph, and the adult dragonfly. Most of the
life cycle of a dragonfly is lived out in the nymph stage and you don’t
see them at all, unless you are swimming underwater in a lake or pond
with your eyes opened, of course.
The Egg Stage
A male and a female dragonfly will mate while they are flying
in the air. After two dragonflies mate, the female dragonfly will lay
her eggs on a plant in the water, or if she can’t find a suitable plant
she will just drop them into the water.
The Nymph Stage
Once the dragonfly eggs hatch, the life cycle of a dragonfly
larva begins as a nymph. A nymph looks like a little alien creature.
It hasn’t grown its wings yet and has what looks like a crusty hump
hanging onto its back. Dragonfly nymphs live in the water while they
grow and develop into dragonflies. This portion of the dragonfly life
cycle can take up to four years to complete, and if the nymph cycle is
completed in the beginning of the wintertime, it will remain in the
water until spring when it is warm enough to come out.
Dragonfly nymphs live in ponds or marshy areas because the
waters are calmer than in a stream or river. Sometimes they can be
found in the calmer backwaters of rivers, too. Dragonfly nymphs may eat
smaller dragonfly nymphs as they develop.
The Adult Dragonfly Stage
Once the nymph is fully grown, and the weather is right, it
will complete the metamorphosis into a dragonfly by crawling out of the
water up the stem of a plant. The nymph will shed its skin onto the
stem of the plant and will then be a young dragonfly. The skin that the
nymph left behind is called the exuvia and you can find the exuvia
still stuck to the stem for a long time after the dragonfly has left it.
Once the dragonfly leaves the exuvia it is a full grown
dragonfly. The dragonfly will hunt for food and begin to look for a
mate. Once the dragonfly finds a mate, the female will find a body of
calm water that will be a good place to lay her eggs, and the life cycle
of the dragonfly begins all over again. Adult dragonflies only live
about two months.
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