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Lecture 1 Notes - Copy

Lecture 1 Notes - Copy - (diplo=two poda=foot o...

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Lecture 1 Notes *Malaria is the most important insect vectored disease in the world* What is an insect? o Insect cells very similar to human cells (look up insect cell) o Entomology: study of insects o Entomologist: one who studies insects (“I’m an entomologist”) o Kingdom Animalia o Phylum Arthropoda* o Class Insecta Plylum Arthropoda (arthro=jointed; poda=foot) 1. Exoskeleton made of chitin 2. Body composed of segments 3. Jointed appendages 4. Open circulatory system (humans have closed ones) 5. Bilateral symmetry 6. Sexual reproduction Class Chilopoda* (chilo=lip; poda=foot) o Centipedes (3,000 species) 1. One pair of legs per segment 2. Predators: eat small arthropods (produce venom) 3. Live in soil and humus Class Diplopoda
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Unformatted text preview: (diplo=two; poda=foot) o Millipedes (8,000 species) 1. Two pair of legs per body segment 2. Feed on decaying organic matter Class Crustacea (crust=hard; shell-like) o Lobsters, crabs, shrimps (26,000 species) 1. Branched appendages 2. Aquatic (Marine equivalent of insects) Class Arachnida (arachne=spider) o 57,000 species 1. No antennae 2. Two body segments 3. Terrestrial 4. Carnivorous Class Insecta (in=into; sect=sect) o 1,000,000 species*( KNOW!) 1. Three body segments (head, thorax, abdomen) 2. Six legs 3. Most adults have wings 4. Two antennae 5. Breathe through openings in body 6. Terrestrial or aquatic *Only invertebrates that can fly*...
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