Bio171-F10-Lec 31 - Biology 171 Monday November 29, 2010...

Info iconThis preview shows pages 1–15. Sign up to view the full content.

View Full Document Right Arrow Icon
Biology 171 Monday November 29, 2010 Lecture 31: Colonization of Land Announcements This week’s discussion: Ant-fungal coevolution Text Reading Lecture 31 : 4th: Chapter 34 (661-668) 3rd: Chapter 34 (753-762) Lecture 32 : 4th: Chapter 31 (579-598) 3rd: Chapter 31 (664-677) Overview of Vertebrate Evolution Lobe-finned & Air-breathing Fishes The non-marine Devonian environment Fins into limbs: origin of Tetrapods Early Amphibians Origin of Amniote Development Evolution of Mammalian Reproduction 1
Background image of page 1

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

View Full DocumentRight Arrow Icon
These early developmental differences are corroborated by gene trees . Protostomes and Deuterostomes represent 2 major lineages within Bilateria. 22
Background image of page 2
Trochophore Larva Protostomes contain 2 primary lineages: the molters ( Ecdysozoa ) and the non-molters ( Lophotrochozoa – named for typical larval type) 23 Fig. 33.2
Background image of page 3

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

View Full DocumentRight Arrow Icon
Ecdysozoa (molting organisms) include the most familiar and abundant organisms on Earth: The phylum Arthropoda, especially insects, dominates animal species level diversity. ( Fig 33.1 ). House dust mite, Dermatophagoides pteronyssinus 24
Background image of page 4
25
Background image of page 5

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

View Full DocumentRight Arrow Icon
Newly Molted “Soft Shell” Crab 26
Background image of page 6
Trochophore Larva ( Lophotrochozoa named for typical larval type) 27
Background image of page 7

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

View Full DocumentRight Arrow Icon
Lophotrochozoa: Phylum Mollusca 28
Background image of page 8
Deuterostomes contain two very distinct major lineages: Echinoderms (strictly marine) and Chordates 29
Background image of page 9

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

View Full DocumentRight Arrow Icon
Deuterostomes play important roles in ecological interactions and human economics. They are key herbivores and predators in both marine and terrestrial ecosystems. 30
Background image of page 10
Phylum Echinodermata – adults with secondary radial symmetry (planktonic larvae bilateral). All species strictly marine. 31
Background image of page 11

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

View Full DocumentRight Arrow Icon
Phylum Chordata: characteristics. All chordates possess the four structural trademarks of the phylum at some point during their development: 1. Pharyngeal gill slits 2. Dorsal hollow nerve cord 3. Notochord 4. Muscular, post-anal tail 32
Background image of page 12
A Cambrian seascape. This artist s reconstruction depicts a diverse array of organisms represented in fossils from the Burgess Shale site in British Columbia, Canada. 3
Background image of page 13

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

View Full DocumentRight Arrow Icon
morphology and DNA of living chordates ( Figure 34.12 ). It is in agreement with fossil data. 4
Background image of page 14
Image of page 15
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/13/2012 for the course BIO 171 taught by Professor Josephinekurdziel during the Fall '08 term at University of Michigan.

Page1 / 47

Bio171-F10-Lec 31 - Biology 171 Monday November 29, 2010...

This preview shows document pages 1 - 15. Sign up to view the full document.

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