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
