05InsectAnatS08

05InsectAnatS08 - flowering plants(Hymenoptera Lepidoptera...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Announcements Quiz today. Field trip dates Pepperwood- Sun Feb 24 Galbreath- Sat Apr 26 or Sun Apr 27 Darwin Day and Biosystematists Public tours of Essig Museum in afternoon Darwin’s B Day party at 5:00 Biosystematists at 7:30 must submit list today! Evolution of Metamorphosis Occurred about 300 MYBP in Carboniforous Coincided with evolution of seed plants Two main types Hemimetabolous Gradual change to adult form No pupal stage Includes true bugs Holometabolous True larval and pupal stage present Includes beetles, flies Insects and Plants Very old associations Early plant fossils show insect damage Insects diversified as plants did
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 Diversification in Mesozoic • Diversification of insects that eat plant feeding insects • Appearance of Lepidoptera in Jurassic Appearance of flowering plants in early Cretaceous (130 MYBP) • Diversification of insects associated with
Background image of page 2
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: flowering plants (Hymenoptera, Lepidoptera) Insect Body Plan (3 regions) 3 ‘ Generalized ’ insect Insects vary a lot with respect to endoskeleton and appendages Orientation • Dorsal • Lateral • Ventral • Appendages – Proximal – Distal Functions of cuticle • Forms exoskeleton • Prevents water loss • Provides support for muscle attachments • Lines tracheae and parts of digestive system • Varies in toughness – Thick/hard, thin/flexible – Depends on life stage 4 Components of cuticle • Waxes and lipids • Proteins • Chitin – in fungal cell walls and arthropod exoskeletons – unbranched polysaccharide polymer of high MW Structure of cuticle • Epicuticle • Procuticle – exocuticle and endocuticle – made of chitin and protein – Thickest layer • Epidermis – live cells – secretes cuticle...
View Full Document

This note was uploaded on 03/02/2012 for the course BIOLOGY 323 taught by Professor Rank during the Spring '08 term at Sonoma.

Page1 / 4

05InsectAnatS08 - flowering plants(Hymenoptera Lepidoptera...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online