07 Arthropoda - Phylum Arthropoda The joint-limbed animals...

Info iconThis preview shows pages 1–14. Sign up to view the full content.

View Full Document Right Arrow Icon
Phylum Arthropoda The joint-limbed animals Monday, June 13, 2011
Background image of page 1

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

View Full DocumentRight Arrow Icon
Monday, June 13, 2011
Background image of page 2
Monday, June 13, 2011
Background image of page 3

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

View Full DocumentRight Arrow Icon
Overview of arthropods Monday, June 13, 2011
Background image of page 4
Arthropods evolved from a polychaete-like ancestor: uniquely shared characters • Metameric segmentation, and its development • Paired segmental appendages • Double ventral nerve cord with metameric ganglia • Cuticle secreted by hypodermis Monday, June 13, 2011
Background image of page 5

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

View Full DocumentRight Arrow Icon
Development of segments in an annelid trochophore larva Monday, June 13, 2011
Background image of page 6
Development of appendages and segments in a larval crustacean Monday, June 13, 2011
Background image of page 7

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

View Full DocumentRight Arrow Icon
Characters shared with other phyla that do not link annelids and arthropods • Coelomate • Triploblastic • Protostomate • Bilateral symmetry Monday, June 13, 2011
Background image of page 8
Differences from annelids • Arthropodized exoskeleton • Major body cavity is a hemocoel • Reduced coelom • Tagmosis (formation of modified segments- appendages) much more pronounced Monday, June 13, 2011
Background image of page 9

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

View Full DocumentRight Arrow Icon
Biramous arthropods Uniramous arthropods Polychaete-like Ancestor “ramousness” has branches arthropodization (biramous, not Arthropodized) (insects, millipedes, Centipedes) (crustaceans, chelicetate, trilobites) Monday, June 13, 2011
Background image of page 10
Monday, June 13, 2011
Background image of page 11

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

View Full DocumentRight Arrow Icon
Metamerism and tagmosis • Defining processes in arthropod evolution • From multi-functional to specialized Monday, June 13, 2011
Background image of page 12
a remipede -islands -caves Monday, June 13, 2011
Background image of page 13

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

View Full DocumentRight Arrow Icon
Image of page 14
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 84

07 Arthropoda - Phylum Arthropoda The joint-limbed animals...

This preview shows document pages 1 - 14. Sign up to view the full document.

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