Upload
june-stevenson
View
221
Download
1
Tags:
Embed Size (px)
Citation preview
Slide 1
By: Kristen Bennett (100110937), Brianna Corbin (100111811), Nate Ells (100109466) Danielle Visentin (100110678)ECHINOIDEA
ECHINOIDEAKingdom: AnimaliaPhylum: EchinodermetaClass: Echinoidea
PHYSICAL CHARACTERISTICSMost have radial symmetryHard calcareous shell called testRows of tube feetMouth is called Aristotle's lanternHave spines to protect and help with locomotion
Protection CharacteristicsTest can be used as pinchers (pedicellariae)Some pedicellariae are poisonousSpiny posterior used for protection
Habitat
Saltwater all over the worldRock poolsCoral ReefsRock bedsSandy lagoons
Can be found:
PredatorsCrabsLarge fishSea ottersBirdsEelsHumansMost Common Predators
AlgaeSea GrassesSeaweedsSessile organismsCarcass of dead organismsPrey
ReproductionFemales are spawners and lie million eggs.Males fertilize with sperm.Echinoid's gonads are connected to small opening in the body called gonophores. This is where the sperm and egg are released.
Phylogeny of Echinoida
Ancestral EchinoidsNon rigid testMouth and anus on opposite polesExternal aperture to water vascular systemTube feet emerging between ambulacra plates in adult
Bothriocidaris eichwaldi
Evolution of Echinoidea Development of a more rigid testImprovement of the water vascular system for respiration, locomotion, and food gathering.Diversification of appendages for special functionIncreased efficiency in reproduction
EchinocystitoidaOrdovician to Permian
Red Sea UrchinOf Today
Bibliographyhttp://feelpositive.wordpress.com/2011/09/27/the-sand-dollar-theory/http://siera104.com/bio/echin.htmlhttp://animals.nationalgeographic.com/animals/invertebrates/sea-cucumber/http://beachchairscientist.wordpress.com/2008/09/10/what-eats-sea-urchins/http://dj003.k12.sd.us/SCHOOL%20NOTES/bk2chpt%204.htmhttp://www.ifood.tv/blog/how-to-store-blue-crabshttp://en.wikipedia.org/wiki/File:Seagull_flying_(5).jpghttp://www.fish-journal.com/2011/10/sea-urchin.htmlhttp://matthewvonhumboldt.tumblr.com/post/12883412206/sand-dollarhttp://posadadelvalle.blogspot.com/2011/03/discovering-coast.htmlhttp://www.imagegossips.com/2011/12/extraordinary-crabs-collection/http://ocean.nationalgeographic.com/ocean/photos/sea-urchins/http://simply-science-nbep.blogspot.com/2011/06/algae-vs-plants.htmlhttp://www.nzunderwaterlife.000space.com/seaweed.htmhttp://accessscience.com/loadBinary.aspxhttp://www.marinespecies.org/photogallery.php?album=694&pic=47599http://www.geo.lsa.umich.edu/~kacey/ugrad/coral3.htmlhttp://www.seadb.net/en_Sea-Urchins-Echinoidea_172.htmhttp://worms.zoology.wisc.edu/urchins/SUfert_intro.htmlPhysiology of Echinoderms General editor: G.A. Kerkut by: John BinyonGrizimek's Animal Encyclopaedia volume 1 editor: Neil Schlager 401 to 407