Pfauenaugen-Stechrochen_-_Ocellate_river_s wikipedia stingray Stingrays & Skates part 2
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Transcript of Pfauenaugen-Stechrochen_-_Ocellate_river_s wikipedia stingray Stingrays & Skates part 2
Pfauenaugen-Stechrochen_-_Ocellate_river_s wikipedia stingray
Stingrays & Skates part 2
http://www.bbc.co.uk/nature/life/Stingray
Stingray city
Newswise.com
discountexcursions.com
Rays:Include the mantas with wingspans exceeding
8 meters (26 feet)Mantas feed on plankton like many other
largerorganisms in the ocean
Eagle Ray
Eagle rays are Cartilaginous fishLive in open ocean rather than on sea bottomFeed on mollusks and crustaceans, crushing
shells with flattened teethCan breach the water several meters above the
surfaceLonger tails than other raysOvoviviparous, giving birth to 6 pups at onceRange from 48 cm (19 in) to 9 m (30 ft) in
length
Wallpapersrus.com
Manta ray scientific classification
Kingdom: AnimaliaPhylum: ChordataClass: ChondrichthyesSubclass: ElasmobranchiiSuperorder: BatoideaOrder: MyliobatiformesFamily: MyliobatidaeSubfamily:MobulinaeGenus: Manta
upload.wikimedia.org/wikipedia/commons/d/df/Manta_birostris-Thailand4.jpg
Manta rays are large eagle raysDevil rays and manta rays are filter plankton feedersSwim with mouths openHave triangular pectoral fins, horn shaped cephalic
fins]Found in temperate, and tropical watersRange in size from 5.5 m to 7 m or 18 to 23 feetM. Birostris migrates across open ocean single or in
groupsM. alfredi is resident and coastalGestation is over 1 year, producing live pupsVisit cleaning stations for removal of parasites
Guitarfish- Ray cousin
https://www.google.com/search?q=guitarfish&espv=2&source=lnms&tbm=isch&sa=X&ei=6aIAVIrqEorHgwSg54CADg&sqi=2&pjf=1&ved=0CAYQ_AUoAQ&biw=1051&bih=703
Ray vs Skate
Skate Anatomy
Skatestype of "ray" that differ considerably from
stingraysdo not possess venomous barbs have sharp thorns located on dorsal surface
and tailsprimarily live in marine habitats and rarely
enter brackish or freshwater environments
Skate ClassificationKingdom: AnimaliaPhylum: ChordataClass: ChondrichthyesSubclass: ElasmobranchiiSuperorder: BatoideaOrder: RajiformesBerg, 1940Family: Rajidae
Egg casesProminent difference is that all stingrays give birth to live young while skates reproduce by laying eggs in leathery capsules sometimes called mermaid's purses
http://www.sharktrust.org/en/great_eggcase_hunt/view_folder.asp?folderid=6241&rootid=6241&depth=1&toptab=6 A resource about skate and shark egg cases and tracking them. This is from the UK but a neat site to click around. Look for the anatomy of a case and how it’s put together.
Skate Dissectionhttp://serchomeschool.wordpress.com/2013/02/01/sharks-and-skat
es-final-dissection-pre-class-materials/ http://pcwww.liv.ac.uk/aquabiol/Dissect_Prac/skate/skate.htm
dissection photos from liverpool uk http://www.marinebiodiversity.ca/skatesandrays/internal%20anato
my.htm
dissection details from center for marine biodiversity http://davidscience.newdesignhigh.com/2012/02/skate-external-an
atomy.html skate external anatomy diagrams…very good!
Sharks and Skates: Skate Dissection from serchttp://serchomeschool.files.wordpress.com/2013/02/skate.gif pic
Other Skate websiteshttp://www.youtube.com/watch?v=Nbuu1Fa-c
1k national geographic video includes stingray city 2 min
http://www.youtube.com/watch?v=ln2ruWT-w54 stingray and spiny lobster 1.5 min amateur
info in glossopedia http://test.glossopedia.org/skates-and-rays/
Other skate websiteshttp://www.globio.org/glossopedia/article.aspx?art_id=
47 this is a great place to start to learn about skates and rays.
http://pcwww.liv.ac.uk/aquabiol/Dissect_Prac/skate/skate.htm a good page to get some idea of what the dissection will look like.
http://www.youtube.com/watch?v=Nbuu1Fa-c1k a nice National Geographic video about stingrays (2 minutes)
http://www.youtube.com/watch?v=51f4UY2TYX8 this is a short video (2 min) of a Ray giving live birth (many lay eggs too, but not this one!)