TAMU ENTO 322 - Taxonomy (4 pages)

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ENTO 322 1st Edition Lecture 3 Outline of Last Lecture I Introduction II Concepts III The Scientific Method Outline of Current Lecture I II III Taxonomy Taxonomic Levels Methods of Identifying Insects Current Lecture I Taxonomy A Basic human nature to name things It is basic human nature to want order and catalogue things B Definition of taxonomy 1 Taxonomy is the science of naming classifying and identifying organisms There are rules associated with the naming of organisms 2 Carl Linnaeus 1758 responsible for the binomial system Systema Naturae described 2 000 species of insects two part name is the Genus always capitalized and the species never capitalized and either italicized or underlined II Taxonomic Levels A Domains i Eubacteria bacteria 1 Unicellular 2 Cell membrane 3 Simple DNA ii Archaebacteria 1 Complex DNA 2 Single cell 3 Cell membrane iii Eukaryota insects 1 All of the above plus a nucleus they are multicellular These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute B Kingdoms i Animalia insects 1 Multicellular with cell membranes 2 Defined single nucleus 3 heterotrophs ii Plantae 1 Multicellular with cell walls cellulose 2 Defined single nucleus 3 Autotrophs with chlorophyll iii Fungi 1 Multicellular with cell walls 2 Defined multiple nuclei coenocytic 3 Heterotrophs iv Protista 1 Single cells with cell membrane 2 Defined single nucleus 3 Heterotrophs 4 Some disease agents Malaria C Phylum Arthropoda insects i Characteristics of Arthropoda 1 Segmented body Metamerism 2 Exoskeletons 3 Jointed appendages the way the legs are attached to the body 4 Dorsal heart open circulation splash system 5 Bilaterally symmetrical 6 Ventral nerve cord 7 Asexual sexual reproduction D Subphylum i Chelicerata 1 Spiders 2 Mites 3 Ticks ii Crustacea 1 Shrimp 2 Isopods iii Atelocerata 1 Insects 2 Centipedes 3 Millipedes E Classes must know for exams i Chilopoda centipedes 1 Head