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Classification. Criteria for classification as reported in an ancient Chinese encyclopedia (Lakoff 1987):. “…it is written that animals are divided into:. those that belong to the Emperor. embalmed ones. those that are trained. suckling pigs. mermaids. fabulous ones. stray dogs.
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Classification Criteria for classification as reported in an ancient Chinese encyclopedia (Lakoff 1987): “…it is written that animals are divided into: those that belong to the Emperor embalmed ones those that are trained suckling pigs mermaids fabulous ones stray dogs those that tremble as if they were mad those that have just broken a flower vase
Systematics- studies diversity of life It is the study and classification of organisms with the goal of reconstructing their evolutionary history Taxonomy- the field of science that classifies life into groups
Biological Kingdoms • 2 Kingdoms • Traditional view plants animals
Plantae Fungi Animalia • Protista Monera Biological Kingdoms • 5 Kingdoms • Whittaker, 1969
Five kingdom system: Monera Protista Plantae Fungi Animalia Six kingdom system: Eu- bacteria Archae-bacteria Protista Plantae Fungi Animalia Three domain system: Eu- bacteria Archae-bacteria E U K A R Y A Eight kingdom system: Eu- bacteria Archae-bacteria Plantae Fungi Animalia Archezoa Protista Chromista Biological Kingdoms
Classification: Six kingdom system : Eubacteria Archaebacteria E. coli Cyanobacteria Protista Paramecium Diatom Slime mold Plantae Fungi Animalia
Six kingdom system: Monera Eu- bacteria Archae-bacteria Protista Plantae Fungi Animalia
What are some of the ways we can classify animals?
Plantae Fungi Animalia • Protista Monera (Eubacteria & Archaebacteria) Primary Grouping Criterion Cellular complexity Eukaryotic Prokaryotic
Other Grouping Criteria • Single-celled vs. multicellular • Mode of nutrition • absorption • photosynthesis • ingestion • Plantae Fungi Animalia • Protista Monera Note: Criteria can overlap
Other Grouping Criteria • Mode of Reproduction • sexual • asexual • Respiratory System • gas exchange across skin • lungs • gills
Other Grouping Criteria • Skeleton • internal/external • bone/cartilage/chitin… • Circulatory System • none • open/closed
Age of Systematics 1700’s Carl Linnaeus Incurable classifier Flair for creative simplicity
Linnaeus Swedish doctor Professor of Medicine & Natural History 14 books in 3 years Fish book: 3,000 pages
Linnaeus 1753: published book describing World’s plants Start of naming process ID: flowers - number &structure of the parts
Linnaeus Descriptions: “poetic precision” Result: easily applied system 2 word names:“binomial nomenclature”
Binomial Nomenclature 2 word name (genus + species) 1st level classification Elephas maximus Loxodonta africanas
Tiger = Panthera tigris Leopard = Panthera pardus Lion = Panthera leo
Panda Bear = Ailuropoda melanoleuca Black Bear = Ursus americanus Polar Bear = Ursus maritimus
Linnaean Hierarchy Kingdom Phylum (or Division) Class Order Family Genus Species Plantae & Fungi
Linnaean Hierarchy “King Philip came over from Germany stoned.”
Names • Common names • Confusing • Ambiguous • Scientific names • Agreed upon system • Portuguese Man-of-War • Bluebottle • Physalia physalis
Names • Language • Latin or Latinized • Giving names • A highly technical process • Name is author’s choice
Commemorate People Gardenia jasminoides (Dr. Alexander Garden) Camelliajaponica (Joseph Kamel) Strelitzia reginae (Queen Charlotte of Mecklenburg-Strelitz) Siegesbeckia orientalis (Dr. Siegesbeck)
Descriptive Cardinalis cardinalis(red) Railus aquaticus(watery) Passer domesticus(house)
Geographic Location Kuhlia sandwicensis (Hawaii) Periplanata americana(American cockroach) Zosterops japonica (Japanese white-eye)
Pronunciation Divide into syllables Choose where to place emphasis
Example of Coral Classification The Mushroom Coral Fungia scutaria Kingdom Animalia Phylum Cnidaria Class Anthozoa Order Scleractinia Family Fungiidae Genus Fungia Species scutaria
Biological Species Organisms that are genetically similar, and have ability to interbreed and produce viable, fertile offspring
Offspring is sterile mule donkey horse
Kingdom Monera • Species number low (~17, 000) • Changing as we learn more • Two Divisions • Eubacteria (Bacteria & Cyanobacteria) • Archaebacteria
Kingdom Monera • Prokaryotic • Single-celled • Diverse energy types: Chemoautotrophic- Purple sulfur bacteria Photoautotrophic- cyanobacteria Heterotrophic- E. coli
Kingdom Monera • Some with cell walls, but cell walls composed of peptidoglycan, not cellulose (as in higher plants). • Asexual reproduction
Eubacteria pneumonia cyanobacteria anthrax
Archaebacteria Purple sulfur bacteria
Kingdom Protista Eukaryotic Generally single-celled; if multicellular, cells not organized into tissues Heterotrophic & autotrophic forms ~ 45,000 species
Kingdom Protista • 3 informal groups • Plant-like (algal) protists • Animal-like protists • Fungus-like protists
Plant-like Protists • Diatoms • Dinoflagellates • Green algae • Brown Algae • Red algae Diatoms Dinoflagellates
Chlorophyta: Green Algae Halimeda opuntia Caulerpa sertularioides Codium edule Dictyosphaeria cavernosa Caulerpa racemosa
Phaeophyta: Brown Algae Padina japonica Turbinaria ornata Hydroclathrus clathratus Sargassum echinocarpum Sargassum polyphyllum
Rhodophyta: Red Algae Hypnea chordacea Ahnfeltia concinna Acanthophora spicifera Galaxaura fastigiata Asparagopsis taxiformis
Animal-like Protists Amoeba Cilliates Flagellates 13,000 species
Fungus-like Protists Mildew Water molds Blights Downey mildew 475 species Slime molds
Kingdom Plantae Eukaryotic Multicellular organisms True tissues. Photoautotrophic nutrition. Most adapted for a terrestrial existence and possessing vascular tissues.
Kingdom Plantae Cells with chloroplasts and cellulose cell walls. Includes mosses, ferns, pine trees, cycads, ginkgos, and flowering plants.
Kingdom Plantae Sea grasses Halophilia hawaiiana- only form of seagrass in Hawaii