Thinking about Turtles & Evolution Part 1: How the Turtle Gets its Shell

12
Thinking about Turtles & Evolution Part 1: How the Turtle Gets its Shell 1

TAGS:

description

Thinking about Turtles & Evolution Part 1: How the Turtle Gets its Shell. Strange Anatomy. Unique Development. Expanding edge of the carapacial ridge. A. Entire embryo in cross-section. B. Enlargement. Formation of Bone in Turtle Shell. Endochondral Intramembranous. - PowerPoint PPT Presentation

Transcript of Thinking about Turtles & Evolution Part 1: How the Turtle Gets its Shell

Page 1: Thinking about Turtles & Evolution Part 1: How the Turtle Gets its Shell

1

Thinking about Turtles & EvolutionPart 1: How the Turtle Gets its Shell

Page 2: Thinking about Turtles & Evolution Part 1: How the Turtle Gets its Shell

2

Strange Anatomy

Page 3: Thinking about Turtles & Evolution Part 1: How the Turtle Gets its Shell

3

Unique Development

Expanding edge of the carapacial ridge.

A. Entire embryo in cross-section. B. Enlargement.

Page 4: Thinking about Turtles & Evolution Part 1: How the Turtle Gets its Shell

4

Formation of Bonein Turtle Shell

Advantages of Metamerism (repeating body segments)

EndochondralIntramembranous

Page 5: Thinking about Turtles & Evolution Part 1: How the Turtle Gets its Shell

5

Microeveolution by Speciation (Darwin)Macroevolution =

Whole New Body Plans (like turtles)Revision of Text Analogy

Problems with transitional forms in nature

Microevolution vs Macroevolution

Page 6: Thinking about Turtles & Evolution Part 1: How the Turtle Gets its Shell

6

Uniramous &Biramous

Appendages

Mutation andSpecilization

Page 7: Thinking about Turtles & Evolution Part 1: How the Turtle Gets its Shell

7

Gene Regulation: On/Off Switches

Page 8: Thinking about Turtles & Evolution Part 1: How the Turtle Gets its Shell

8

Real world example of Gene Regulation in Prokaryote (E. coli)

Generalize to molecules from adjacent cells serving as signals

Page 9: Thinking about Turtles & Evolution Part 1: How the Turtle Gets its Shell

9

Unique Development

Expanding edge of the carapacial ridge.

A. Entire embryo in cross-section. B. Enlargement.

Page 10: Thinking about Turtles & Evolution Part 1: How the Turtle Gets its Shell

10

Fruit Fly Drosophila melanogaster

Larva (maggot)

Adult

Page 11: Thinking about Turtles & Evolution Part 1: How the Turtle Gets its Shell

11

Embryonic Limb Buds

NormalMutated

Page 12: Thinking about Turtles & Evolution Part 1: How the Turtle Gets its Shell

12


Status of turtles in Tanzania Final Reportawsassets.panda.org/downloads/statusofturtlesintanzania...Status of marine turtles in the WIO region 2. Location & duration of turtle conservation

Status of turtles in Tanzania Final Reportawsassets.panda.org/downloads/statusofturtlesintanzania...Status of marine turtles in the WIO region 2. Location & duration of turtle conservation

Thinking about Turtles & Evolution Part 1: How the Turtle Gets its Shell 1.

Thinking about Turtles & Evolution Part 1: How the Turtle Gets its Shell 1.

Marine turtle conservation in the mediterranean marine turtles in egypt (low resolution)

Marine turtle conservation in the mediterranean marine turtles in egypt (low resolution)

O A Global research priorities for sea turtles: …researchonline.jcu.edu.au/12174/1/Hamman_et_al_20...human–turtle interactions, turtle population status and environmental threats

O A Global research priorities for sea turtles: …researchonline.jcu.edu.au/12174/1/Hamman_et_al_20...human–turtle interactions, turtle population status and environmental threats

Florida's Sea Turtles - Beaches Sea Turtle Patrol | … Sea Turtles (FPL).pdfAnyone wishing to learn more about Florida’s sea turtles will find ... extensive shallow seas. Turtles

Florida's Sea Turtles - Beaches Sea Turtle Patrol | … Sea Turtles (FPL).pdfAnyone wishing to learn more about Florida’s sea turtles will find ... extensive shallow seas. Turtles

webs.wofford.eduwebs.wofford.edu/davisgr/Bio104for2009...  · Web viewThinking about Turtles and Evolution. Part One: How the Turtle Gets its Shell. This introductory section consists

webs.wofford.eduwebs.wofford.edu/davisgr/Bio104for2009...  · Web viewThinking about Turtles and Evolution. Part One: How the Turtle Gets its Shell. This introductory section consists

WILD at Schools: Turtle Troublesland turtles, sea turtles cannot hide in their shell and they have flippers instead of feet. All seven species of sea turtle are listed under the endangered

WILD at Schools: Turtle Troublesland turtles, sea turtles cannot hide in their shell and they have flippers instead of feet. All seven species of sea turtle are listed under the endangered

Marine turtle conservation in the mediterranean marine turtles in syria (low resolution)

Marine turtle conservation in the mediterranean marine turtles in syria (low resolution)

Model Loggerhead Sea Turtle - BHIC.org · Loggerhead Sea Turtle These turtles are the superstars of Bald Head Island! Loggerheads make up the vast majority of the sea turtles that

Model Loggerhead Sea Turtle - BHIC.org · Loggerhead Sea Turtle These turtles are the superstars of Bald Head Island! Loggerheads make up the vast majority of the sea turtles that

Leatherback Sea Turtle Mrs. Medford’s Class. The Leatherback Sea Turtle The leatherback sea turtle is the largest of all turtles. The leatherback sea.

Leatherback Sea Turtle Mrs. Medford’s Class. The Leatherback Sea Turtle The leatherback sea turtle is the largest of all turtles. The leatherback sea.

Adopt a Sea Turtle Nest!€¦ · Adopt a Sea Turtle Nest! Volusia/Flagler Turtle Patrol Protecting Nesting Sea Turtles in Volusia and Flagler Counties, Florida Adoption Information.

Adopt a Sea Turtle Nest!€¦ · Adopt a Sea Turtle Nest! Volusia/Flagler Turtle Patrol Protecting Nesting Sea Turtles in Volusia and Flagler Counties, Florida Adoption Information.

So You Want a Pet Turtle? Turtles are not that hard to find! Try checking out The Turtle Source.The Turtle Source. Petsmart has some turtles for sale.

So You Want a Pet Turtle? Turtles are not that hard to find! Try checking out The Turtle Source.The Turtle Source. Petsmart has some turtles for sale.

A PUBLICATION OF THE TURTLE SURVIVAL …...20 | Alligator Snapping Turtle Update 22 | New Guinea Turtles 25 | Turtle Island 26 | Kinixys Conservation 28 | U.S. Turtle Exports 62 |

A PUBLICATION OF THE TURTLE SURVIVAL …...20 | Alligator Snapping Turtle Update 22 | New Guinea Turtles 25 | Turtle Island 26 | Kinixys Conservation 28 | U.S. Turtle Exports 62 |

Spotted Turtle Common Musk Turtle Blanding’s Turtle · Wood Turtle Turtles’ shells are import-ant for defense, protecting these generally slow-moving reptiles from many predators.

Spotted Turtle Common Musk Turtle Blanding’s Turtle · Wood Turtle Turtles’ shells are import-ant for defense, protecting these generally slow-moving reptiles from many predators.

Status of Blanding’s Turtle and Spotted Turtle Populations ... · persistence of six populations of Blanding’s turtles and five populations of spotted turtles across northern

Status of Blanding’s Turtle and Spotted Turtle Populations ... · persistence of six populations of Blanding’s turtles and five populations of spotted turtles across northern

Delineating Stock Boundaries: Pacific Green Turtles · Delineating Stock Boundaries: Pacific Green Turtles Michael P Jensen NRC Postdoc, Marine Mammal & Turtle Division NOAA Fisheries,

Delineating Stock Boundaries: Pacific Green Turtles · Delineating Stock Boundaries: Pacific Green Turtles Michael P Jensen NRC Postdoc, Marine Mammal & Turtle Division NOAA Fisheries,

Sea Turtle Biology and Conservation. Sea Turtles in Mythology Turtles have long been revered in myths. Most Indian tribes see turtles as being sacred.

Sea Turtle Biology and Conservation. Sea Turtles in Mythology Turtles have long been revered in myths. Most Indian tribes see turtles as being sacred.

© Doug Perrine Sea Turtle Impacts€¦ · on Sea Turtles Sea turtles are air-breathing animals. Endangered sea turtles, entangled in the nearly invisible monofilament line of mile-wide

© Doug Perrine Sea Turtle Impacts€¦ · on Sea Turtles Sea turtles are air-breathing animals. Endangered sea turtles, entangled in the nearly invisible monofilament line of mile-wide

Community Based Turtle Conservation in Qeshm Island and Coastli… · Community Based Turtle Conservation in Qeshm Island Turtles The hawksbill turtle (Eretmochelys imbricata) is

Community Based Turtle Conservation in Qeshm Island and Coastli… · Community Based Turtle Conservation in Qeshm Island Turtles The hawksbill turtle (Eretmochelys imbricata) is

World Turtle Day · World Turtle Day Activity Book. Turtle Facts Turtles belong to one of the oldest groups of existing reptiles. They are older than snakes, crocodiles and alligators.

World Turtle Day · World Turtle Day Activity Book. Turtle Facts Turtles belong to one of the oldest groups of existing reptiles. They are older than snakes, crocodiles and alligators.