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Whale Shark Adaptations

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by Allison Hakanson on 11 December 2012

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Transcript of Whale Shark Adaptations

Ecology of the Whale Shark Improved function
Natural selection
Niche Why adapt? Internal function/system of operation Physiological Physical trait Morphological Behavioral Decision Based Coloring Feeding method Allison Hakanson http://www.flmnh.ufl.edu/fish/Gallery/Descript/whaleshark/whaleshark.html

http://www.fieldtripearth.org/article.xml?id=1271

http://www.arkive.org/whale-shark/rhincodon-typus

http://www.doe.ky/marine/sharks/shark-biology/

http://www.environment.gov.au/biodiversity/threatened/publications/recovery/r-typus-issues/threats.html

http://www.coral.org/resources/about_coral_reefs/threats_to_coral_reefs

http://www.whalesharkproject.org/v.asp?level2=6379&depth=2&level3=6379&level2id=6379&rootid=6372&nextlevel=6379

http://www.flmnh.ufl.edu/fish/Gallery/Descript/whaleshark/whaleshark.html

http://www.whalesharkproject.org/v.asp?level2=6376&depth=2&level3=6376&level2id=6376&rootid=6371&nextlevel=6376

http://www.environment.gov.au/coasts/mpa/publications/pubs/ningaloo-plan.pdf Works Cited Ampullae of Lorenzini Population Very little information
Declining
Slow growing
Hunted
Listed as Vulnerable Status & Distribution Organisms have finite amount of energy
Trade-offs efficiently use allocated energy Reproductive Trade-Offs Whale Shark Trade-Offs 1. When should the organism first reproduce? around 30 years to mature 2. How many reproductive sessions should the organism have? 3. How much energy should the parents spend on reproduction? 4. How many offspring per reproductive session should an organism have? around 300 ovoviviparous and no care after birth Many?
Live 70-100 years Community Organismal on the... ...level on the... ...level on the... ..level Whale Shark and Remora Mutualistic relationship: both benefit
Remora eats ectoparasites on Whale Shark
Whale Shark transports, and lets Remora eat scraps from feeding Selective Pressures Doesn't let Remora attach- weakened by parasites Lets Remora attach- parasites are eaten Doesn't eat parasites- host is weakened Eats parasites- host is not weakened Remoras are selected to eat parasites Whale Sharks are selected to let Remoras attach Offspring are more likely to eat parasites Offspring are more likely to let Remoras attach Interdependence
Niches
"fittest" Ecosystem on the... ...level Habitat Highly migratory
Warm pelagic and coastal waters
For example Ningaloo Reef
Shallow lagoons and deep open water
High amounts of Zooplankton Other Species Spanish Mackerel
Yellowfin Tuna
Lizardfish
Goatfish
White-tipped shark
Manta rays Orcas
Bottlenose Dolphin
Olive Sea Snake
Hawksbill Turtle
Dugongs
Humback Whales Ecosystem Threats Ocean Acidification early late one many lay eggs invest long time care one thousands On organismal level.... ....the population level ...the community level ...the ecosystem level Caused by increased carbon-dioxide levels in water
Weakens coral
Coral Reefs are great habitat
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