Arthropod phylogeny & Insect Evolution. Objectives: Identify characteristics of the Arthropoda Discuss Arthropod Phylogeny Characteristics of major taxa.

Slides:

Advertisements

Similar presentations

9. Arthropods Largest and most successful phylum in the animal kingdom. 85% of all animals! Exoskeleton made of Chitin (light/hard polysaccharide). Jointed.

Advertisements

Jointed-legged invertebrates

Phylum Arthropoda Trilobites, Chelicerates, & Myriapods

ARTHROPODS HOLT CH. 29 PG

Phylum Arthropoda It doesn’t get any bigger than this!

L o Phylum: Arthropoda Phylum: Arthropoda. l o Arthropoda Origin of the word Arthropoda: Jointed Foot Common Examples: Insects, Spiders, Crabs Symmetry:

Phylum Arthropoda.

Phylum Arthropoda. Greek: arthro = jointed + pod = foot Huge group!! > 1,000,000 species - 84% of all animal species are arthropods!! How can we explain.

Phylum Arthropoda Jointed appendages Exoskeleton Bilateral symmetry Open Circulatory System Well developed nervous system with a Brain Well developed muscles.

Chapter 26: Phylum Arthropoda

04 Nov. 2014Arthropoda.ppt1 ARTHROPODS Phylum Arthropoda.

Phylum Arthropoda.

Chapter 31 Arthropods.

Arthropods. Body Plans 3 main characteristics exoskeleton Chitin Can be hard or leathery Can be hard or leathery Used like armor Molting for growing.

Phylum Arthropoda General Characteristics.  Largest phylum in the animal kingdom  Includes insects, spiders, millipedes, centipedes, crabs and krill.

Phylum Arthropoda Spiders, crabs, millipedes, insects, scorpions and lobsters.

{ Biology 112 Arthropods and Echinoderms.  Includes animals such as crabs, spiders, and insects  Segmented bodies, a tough exoskeleton (external body.

Crustaceans, Spiders and Insects. Arthropods are the most successful phylum on the planet! 750,000 species Arthropods have Segmented body Tough exoskeleton.

Phylum Arthropoda General characteristicsGeneral characteristics –largest group by sheer numbers – total number exceeds that of all other kinds of animals.

Arthropods and Their Relatives

Characteristics and Classes of Arthropods

Zoology – Arthropod Unit

The Arthropods Keith Power. * Arthropods are by far the most successful of all animals * Well over 1,000,000 species * Some say over 30 million species.

Chapter 36 Table of Contents Section 1 Phylum Arthropoda

 What is an arthropod?  In the Phylum Arthropoda there are crabs, spiders, and insects.  They have segmented bodies, tough exoskeletons, and jointed.

Arthropods Section 1: Features of Arthropods

Phylum Arthropoda.

Phylum Arthropoda. 1.Arthropoda – “jointed legs” A. Segmented bodies, jointed appendages, and a tough exoskeleton made of chitin. 1). 3 layers a) Outer.

Phylum Arthropoda. Arthropods “Arthro” = joint “pod” = foot “jointed foot”

Phylum Arthropoda. Typical Arthropod Structures Means “Joint-foot” Includes lobsters, crabs, spiders, insects, millipedes, & centipedes Bodies w/segments.

Arthropods. Main Characteristics Jointed appendages Segmented body Exoskeleton (skeleton on outside) Mandibles – chewing mouthparts Metamorphosis ( egg.

SUBPHYLA: TRILOBITA, CRUSTACEA, CHELICERATA, AND UNIRAMIA

Arthropods By: Ethan Jones and Xavier. Arthropods Makes up 3/4's of all animal species -total number of arthropod species is MORE than all other species.

Classes of Arthropods.

Phylum Arthropoda Crustaceans, Insects, Arachnids.

Phylum Arthropoda. Arthropods  Make up about 80% of the known animal species  Insects are by far the most common species of arthropods  Arthropod means.

PHYLUM: ARTHROPODA arthro – Greek for JOINTED poda – Greek for FOOT JOINTED FEET!!!

Phylum Arthropoda. ARTHROPODS Largest Phylum o Insects Bilateral symmetry Segmented bodies Exoskeleton of chitin & protein o Ecdysozoa.

Terrestrial Mandibulates: Spiders and Insects

Bi 212, Lecture 5 Phylum Arthropoda. Phylum Arthropoda: “jointed foot”

Arthropods Chapter 36 Chapter 36. Arthropods Chapter 36 Chapter 36.

-The exoskeleton is made up of chitin and

Arthropods By Aaron Williams.

Chapter 28 Mid-term Review Classification and Arthropods.

Chapter 28: Arthropods and Echinoderms. What is an Arthropod? Segmented body Segmented body Tough exoskeleton of chitin Tough exoskeleton of chitin Jointed.

Kingdom – Animalia Phylum Arthropoda – “jointed foot” Sub phyla: Crustacea – crabs, crawfish, shrimp ARTHROPODS.

Arthropods. Arthropods are the most diverse and numerous animals on earth More than 1 million different species have been identified They thrive in almost.

(arthro = joint) + (poda = leg). Phylum Arthropoda  Bilaterally symmetrical, triploblastic  Tagmatization  Paired, jointed appendages  Compound eyes.

28.2. Arachnids Class Arachnida Spiders (largest group), scorpions, mites, ticks Two body regions Cephalothorax Abdomen Chelicerae: appendages modified.

Phylum Arthropoda Insects Arachnids Crustaceans

Introduction & Classification of Arthropods

Phylum Arthropoda By Kelsey Hamilton.

Groups of Arthropods.

Insects, crustaceans, spiders, scorpions, Oh My!

Arthropods Chapter 28.

Arthropoda  Characteristics .

Ch Arthropods Phylum: Arthropoda Means “jointed legs”

Arthropods Most successful phyla 1,000,000 species named

Common Group Name: Arthropods

Arthropods have exoskeletons with jointed appendages.

Ch.18, 19 and 20 Phylum Arthropoda.

Chapter 23 Arthropod Review.

Phylum Arthropoda.

Presentation transcript:

Arthropod phylogeny & Insect Evolution

Objectives: Identify characteristics of the Arthropoda Discuss Arthropod Phylogeny Characteristics of major taxa Discuss Insect Evolution

Arthropoda Arthro- Refers to Joints Poda- Refers to feet

Arthropoda Characteristics Paired, jointed appendages Segmented body plan Land forms have tracheae or book lungs, Aquatic forms have gills

Arthropoda Characteristics Compound eyes Open circulatory system Digestive system is a tube Nervous system with brain, paired ventral nerve cords

Arthropoda Exoskeleton is molted

Arthropoda

Evolved from Annelida

Ecdysozoans

Arthropoda Phylogeny Many hypotheses exist Molecular data suggest:

Arthropoda Classification Chelicerata Mandibulata Hexapoda = antennae

Chelicerae = feeding appendages Arthropoda Classification = fangs in spiders

Arthropoda Classification 1. Chelicerata Classes: Merostomata - horseshoe crabs Arachnida - spiders, scorpions, ticks, mites

Arthropoda Classification Chelicerata Mainly terrestrial Body Divisions - Cephalothorax, abdomen No antennae No chewing mandibles

Arthropoda Classification Chelicerata First and second pair of appendages - chelicerae, pedipalps used for manipulation of food, locomotion, defense, copulation Next four pair of appendages - walking

Arthropoda Classification Crustacea Aquatic Body divisions - cephalothorax and abdomen Gills 2 pairs antennae - touch and taste Biramous appendages - two jointed branches arising from their base

- biramous appendages

Arthropoda Classification Crustacea Mandibles and maxillae used for feeding Chelipeds on lobsters and crayfish - pinching claws Larval stage Green glands

Arthropoda Classification Hexapoda Class: Insecta - insects

Arthropoda Classification Insecta characteristics Terrestrial and some aquatic Body plan - Head, thorax, abdomen Uniramous 1 pair antennae 3 pairs legs on thorax Malpighian tubules

Insect Evolution Four stages of insect evolution: 1.Development of insect body form 2.Development of wings 3.Development of wing flexion 4.Development of complete metamorphosis

Orders: Ephemeroptera = ?

Odonata = ?

Plecoptera

Megaloptera

Coleoptera

Lepidoptera

Diptera