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Ent 202 Project 2

Ent 202 Project 2 - Mosquitoes Are Pests Dun Ning 2005...

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1 Mosquitoes Are Pests Dun Ning 2005 Entomology 202
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2 Introduction Mosquitoes are one of the most disliked pests to us. They cause irritation to our skin, and because of their sheer numbers, it’s even more annoying. Though there are some beneficial factors from mosquitoes, most of them are just plain annoying and troublesome. Here, we discuss about the mosquitoes’ biology, and diseases it may transmit to demonstrate that mosquitoes are pests. When you see one of these on you, best to give it a good whack.
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3 Classification and Structure Mosquitoes are insects from the family Culcinadae . They belong in the order, Diptera . There are about 2,500 species of mosquitoes today, and a half of those are considered pests, because only the females are bloodsuckers. Like all insects, they are protected by their exoskeletons. They are characterized by their slender body covered with scales and long fragile looking legs. Their mouth parts are like needles, and it is located on the head, or elongated proboscis. The threadlike antennae of male are generally bushier than those of the female. It is used to find mates and nectar, which it feeds on. Mosquitoes can sense odors as much as 10,000 times better than humans.
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4 Like all insects, mosquitoes have 3 basic body parts. Head: This is where the sensors are, along with the biting apparatus. It has two compound eyes, antennae to sense chemicals and mouth parts called the palpus and the proboscis. Only the females have proboscis for biting. From Freudenrich “How Mosquitoes Work.” Thorax: This segment has two wings and six legs attached to it. It contains flight muscles, compound heart, some nerve cells like ganglia and trachioles to control these different body parts. Abdomen: This segment contains the digestive system and the excretory organs.
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5 A scanning electron micrograph of mosquito From http://education.denniskunkel.com/Zoom-Mosquito-index.html
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6 Three basic body parts in detail From http://www.tuscolacounty.org/mosquito/images/mosquito%20key.gif Four distinct life stages From http://www.montgomerycountymd.gov/mc/services/dep/Mosqu ito/images/lifecycle350.GIF
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