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> The dreaded mosquito Part 1
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The dreaded mosquito Part 1 (Teacher: Michael)
There are approximately 4,000 different species of mosquitoes distributed throughout
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the
world.
Interestingly, this insect goes through
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the
complete metamorphosis in its life cycle with its immature stages always closely associated with water, mainly stagnant water found in ponds, open wells, old cans, etc.
The eggs are laid on
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a
the
surface of
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the
water in groups, and have pairs of lateral air floats to keep them at
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the
surface.
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the
eggs hatch after
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the
few hours of being laid and
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minute worm-like larval stage will emerge. There are four larval stages which will feed voraciously on micro-organisms present in
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the
water or on
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surface.
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larva obtains oxygen by coming up to
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surface, suspended there by surface tension and taking in air through
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the
pair of spiracles at its hind end.
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