Transcript Dragon Fly

Dragonfly
By: Logan Miller
Intro
This power point will tell you all you need to
know about the life cycle of the Dragon Fly.
The stages are the egg, the larva, the
nymph, and then the adult.
Egg
The dragonfly egg is
directly placed in
aquatic plants or
dropped in the water.
If they are laid beside
the water they will
not hatch in the sun
but only when it
rains. The eggs look
like little white rocks.
Larva
The larva also lives in
the water. It
resembles the adult
except it is much
smaller, doesn't have
wings, and has a
wider and shorter
abdomen. As the
larva grows it molts,
(sheds its skin), quite
a few times. The
dragonfly usually
spends a long time in
the water as a larva,
eating and growing.
Nymph
The Nymph has six legs
which are all located
near their head. They
can be 18-49 mm in
length. Dragonfly
Nymphs live on plants,
among stones, or at the
bottom of ponds or
slow-flowing rivers.
Dragonfly Nymphs are
predators and feed
mostly on other insects
in the water.
Sometimes, they can be
cannibals and eat each
other.
Nymph
Some of the larger
species have been
known to feed on small
fish and tadpoles. They
catch their food with
their bottom lip that is
usually covered with
teeth and folded under
their head. When a
small insect comes
near the nymph, it will
shoot out its bottom lip
to grab it, faster than
most prey can react.
The lip is then pulled
back to the hungry
nymph’s mouth and
eating begins.
Adult
After leaving the water
the dragonfly finds a
place to stand and
starts to pump liquid
into its wings to
stretch them out. It
then lets the sun dry
them out. Once its
wings are dry the
dragonfly starts to fly
and explore the area.
The adult dragonfly can
grow up to 12.7 cm in
length. Adults eat
mosquitoes (THANK
THE LORD).
Interesting Facts
The life span of a dragonfly can be from 2
months to around 7 years. Most of this
time is spent in the nymph stage with the
adult stage only living for a few weeks.
The adult breathes through small holes in
its abdomen called spiracles. It is able to
hover and catches other insects for food
as it flies around.
Thanks for Watching!
I hope you
learned
something
from my
slide show!