Great White Shark YRC9P0.
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Transcript of Great White Shark YRC9P0.
![Page 1: Great White Shark YRC9P0.](https://reader038.fdocuments.in/reader038/viewer/2022110101/56649eec5503460f94bfd744/html5/thumbnails/1.jpg)
Great White Shark
https://www.youtube.com/watch?v=zZVbSYRC9P0
![Page 2: Great White Shark YRC9P0.](https://reader038.fdocuments.in/reader038/viewer/2022110101/56649eec5503460f94bfd744/html5/thumbnails/2.jpg)
https://www.youtube.com/watch?v=Pk-G8g3wXOg
![Page 3: Great White Shark YRC9P0.](https://reader038.fdocuments.in/reader038/viewer/2022110101/56649eec5503460f94bfd744/html5/thumbnails/3.jpg)
Marine Mammals
Cetaceans Pinnipeds
Sirenians Polar bear
Sea otter
![Page 4: Great White Shark YRC9P0.](https://reader038.fdocuments.in/reader038/viewer/2022110101/56649eec5503460f94bfd744/html5/thumbnails/4.jpg)
What’s the big deal about being an aquatic mammal?
![Page 5: Great White Shark YRC9P0.](https://reader038.fdocuments.in/reader038/viewer/2022110101/56649eec5503460f94bfd744/html5/thumbnails/5.jpg)
Problem and Solutions
Problem:
•Heat conductivity of water 25x that of air
Solutions?
![Page 6: Great White Shark YRC9P0.](https://reader038.fdocuments.in/reader038/viewer/2022110101/56649eec5503460f94bfd744/html5/thumbnails/6.jpg)
Solutions
Insulation
Marine mammals - two forms of insulation
•Fur •Blubber
![Page 7: Great White Shark YRC9P0.](https://reader038.fdocuments.in/reader038/viewer/2022110101/56649eec5503460f94bfd744/html5/thumbnails/7.jpg)
INSULATION THICKNESS (mm)
10 30 50 70 90 1100
0.5
1.0
1.5IN
SU
LA
TIO
N (
W-1M
2oC
)Still Air Dry Fur
Wood
Adipose
MuscleWater
Copper
Sea otter hair, Wet
Harbor porpoise blubber
Spotted dolphin blubber
![Page 8: Great White Shark YRC9P0.](https://reader038.fdocuments.in/reader038/viewer/2022110101/56649eec5503460f94bfd744/html5/thumbnails/8.jpg)
INSULATION THICKNESS (mm)
10 30 50 70 90 1100
0.5
1.0
1.5IN
SU
LA
TIO
N (
W-1M
2oC
Still Air Dry Fur
Wood
Adipose
MuscleWater
Copper
Polar bear hair, Dry
Polar bear hair, Wet
![Page 9: Great White Shark YRC9P0.](https://reader038.fdocuments.in/reader038/viewer/2022110101/56649eec5503460f94bfd744/html5/thumbnails/9.jpg)
Thermal Windows
•Feet
•Flippers•Dorsal fin
•Pectoral flippers
•Tailflukes
![Page 10: Great White Shark YRC9P0.](https://reader038.fdocuments.in/reader038/viewer/2022110101/56649eec5503460f94bfd744/html5/thumbnails/10.jpg)
Rommel et al., ‘98
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Countercurrent exchanger
![Page 12: Great White Shark YRC9P0.](https://reader038.fdocuments.in/reader038/viewer/2022110101/56649eec5503460f94bfd744/html5/thumbnails/12.jpg)
Conclusions
Marine mammal solutions
•Insulation - fur and blubber
•Vasculature
![Page 13: Great White Shark YRC9P0.](https://reader038.fdocuments.in/reader038/viewer/2022110101/56649eec5503460f94bfd744/html5/thumbnails/13.jpg)
Thermal Problem for Male Reproductive Systems
Problem:
• Sperm production requires lower temp
Terrestrial mammal solution
• Scrotum or cremaster sacs
![Page 14: Great White Shark YRC9P0.](https://reader038.fdocuments.in/reader038/viewer/2022110101/56649eec5503460f94bfd744/html5/thumbnails/14.jpg)
Rommel et al., ‘98
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The Cetacean Solution
Rommel et al., ‘92
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Rommel et al., ‘98
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12
34
5
Distance from Anus (cm)
Tem
pera
ture
(o C
)
37
36
35
IT WORKS!
![Page 18: Great White Shark YRC9P0.](https://reader038.fdocuments.in/reader038/viewer/2022110101/56649eec5503460f94bfd744/html5/thumbnails/18.jpg)
Conclusions
Marine mammal solutions
•Decreased surface area
•Insulation - fur and blubber
•Vasculature
![Page 19: Great White Shark YRC9P0.](https://reader038.fdocuments.in/reader038/viewer/2022110101/56649eec5503460f94bfd744/html5/thumbnails/19.jpg)
Structure without function is a corpse; function sans structure is a ghost - Vogel and Wainwright, ‘69
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