MenuPreviousNext WOD 4/9 nPINION (PIN yun) v.  to bind the wings so as not to fly; to confine nThe handcuffs were used to PINION his hands. nIn order to transport the large bird, the zoo keeper PINIONED its wings with soft straps. nJake had PINIONED John to the wall before someone could stop the altercation

MenuPreviousNext Phylum Mollusca n4 Features  Soft body  Muscular foot  Mantle (with the ability of secrete a shell)  Modified body plans

MenuPreviousNext What kind of organisms are in the Phylum Mollusca?

MenuPreviousNext (Sea) Snails…

MenuPreviousNext (Sea) Slugs…

MenuPreviousNext Conchs…

MenuPreviousNext Shellfish (i.e. clams)…

MenuPreviousNext Shellfish (i.e. oysters)…

MenuPreviousNext Shellfish (i.e. mussels)…

MenuPreviousNext Shellfish (i.e. scallops)…

MenuPreviousNext Octopus…

MenuPreviousNext Squid…

MenuPreviousNext Cuttlefish…

MenuPreviousNext …and Nautilus.

MenuPreviousNext General Characteristics of Molluscs nMolluscs are the most abundant marine phylum. More species in the ocean are molluscs than any other phylum.

MenuPreviousNext General Characteristics of Molluscs nSome other characteristics all members share:  A soft body called a visceral mass. The part of this visceral mass that can (but does not always) secrete a shell made of CaCO 3 is called the mantle.  A muscular foot beneath the head used for movement.  The radula – a tongue with rough scraping teeth used for feeding.  Are either bilateral or asymmetrical.  Most have a tube like organ called a siphon to suck in and expel water. Mollusks – A Bag, a Scraper, and a Foot Chapter 5 Pages 5-43 & 5-44

MenuPreviousNext General Characteristics of Molluscs nExample of a radula.

MenuPreviousNext General Characteristics of Molluscs nExample of a radula.

MenuPreviousNext Classes of Phylum Mollusca There are THREE main classes that we find in the Phylum Mollusca.

MenuPreviousNext Classes of Phylum Mollusca Class Gastropoda nTranslation nSnails, whelks, slugs, conchs and most single-shelled mollusks belong in class Gastropoda.  This is the most common of the 3 classes. Mollusks – A Bag, a Scraper, and a Foot Chapter 5 Pages 5-43 & 5-44 Gastro -poda Stomachfoot

MenuPreviousNext Classes of Phylum Mollusca Class Gastropoda nMost gastropods can be either terrestrial or marine. nSea slugs are also known as a nudibranch. Nudibranchs are actually very beautiful (most of the time). They are unique because their gills are on the outside of their bodies (their name translates to “naked gills”).

MenuPreviousNext Classes of Phylum Mollusca nExamples of nudibranchs.

MenuPreviousNext Classes of Phylum Mollusca nExamples of nudibranchs.

MenuPreviousNext Classes of Phylum Mollusca nExamples of nudibranchs.

MenuPreviousNext Classes of Phylum Mollusca nMore examples of gastropods (marine snails).

MenuPreviousNext Classes of Phylum Mollusca nConchs are a specific category of marine snails. They are defined by the presence of the Stromboid notch.

MenuPreviousNext Classes of Phylum Mollusca nMore examples of gastropods (cone snail). VENOMOUS!!!

MenuPreviousNext Classes of Phylum Mollusca nMore examples of gastropods (flamingo tongue).

MenuPreviousNext Classes of Phylum Mollusca nMore examples of gastropods (cowrie).

MenuPreviousNext Classes of Phylum Mollusca Class Bivalvia nTranslation nMussels, clams, oysters, scallops, etc. are all bivalves. nBody is very modified (laterally compressed).  Have 2 shells to protect soft bodies.  Bivalves are filter feeders. Instead of a radula they have modified gills which filter food out of the water as they breath. Mollusks – A Bag, a Scraper, and a Foot Chapter 5 Pages 5-43 & 5-44 Bi -valvia Twovalves

MenuPreviousNext Classes of Phylum Mollusca nExamples of bivalves (Coquina clam).

MenuPreviousNext Classes of Phylum Mollusca nExamples of bivalves (common mussels).

MenuPreviousNext Classes of Phylum Mollusca nExamples of bivalves (common scallop).

MenuPreviousNext Classes of Phylum Mollusca nThe largest bivalve is the giant clam. It has been known to reach sizes up to 5 feet in length and weigh approximately 400 pounds! Just like coral, giant clams have a symbiotic relationship with zooxanthellae.

MenuPreviousNext Classes of Phylum Mollusca nExamples of the giant clam (Tridacna gigas).

MenuPreviousNext Classes of Phylum Mollusca nExamples of the giant clam (Tridacna gigas).

MenuPreviousNext Do Now 4/15 nPURBLIND (PER blind) adj.  having poor vision; nearly or partly blind nI am afraid that when it comes to mathematics, I am PURBLIND. nThe PURBLIND man was undergoing surgery to restore his sight. nOne of the most famous of PURBLIND people, who was able to overcome her handicap, was Helen Keller

MenuPreviousNext Classes of Phylum Mollusca Class Cephalopoda nTranslation nInclude octopus, squid, cuttlefish and nautilus. nMost “advanced” of the molluscs.  All are active swimmers and predators.  Have a complex nervous system with a primitive brain called a centralized ganglion.  There is a loss or reduction of the shell. Mollusks – A Bag, a Scraper, and a Foot Chapter 5 Pages 5-43 & 5-44 Cephalo -poda Headfoot

MenuPreviousNext Classes of Phylum Mollusca nMore characteristics of cephalopods.  They use arms and tentacles (not the same thing) with suction cups and extremely well adapted eyes to perceive their environment.  Use a siphon to suck water into and from the mantle to move by jet propulsion.  Use color changing cells called chromatophores to communicate.  Many have an ink sac for defense.

MenuPreviousNext Classes of Phylum Mollusca nExample of the siphon.

MenuPreviousNext Classes of Phylum Mollusca nExample of chromatophores.

MenuPreviousNext Classes of Phylum Mollusca nExample of chromatophores.

MenuPreviousNext Classes of Phylum Mollusca Special Attributes of Class Cephalopoda nCuttlefish (order Sepioidea) differ from squid and octopuses by having an internal shell used primarily for buoyancy. Mollusks – A Bag, a Scraper, and a Foot Chapter 5 Pages 5-45 to 5-48

MenuPreviousNext Classes of Phylum Mollusca nExample of a cuttlefish.

MenuPreviousNext Classes of Phylum Mollusca Special Attributes of Class Cephalopoda nSquid (order Teuthoidea) differ from cuttlefish and octopuses with their streamlined, torpedo-shaped bodies adapted to life in open water. Mollusks – A Bag, a Scraper, and a Foot Chapter 5 Pages 5-45 to 5-48

MenuPreviousNext Classes of Phylum Mollusca nExamples of squid.

MenuPreviousNext Classes of Phylum Mollusca Special Attributes of Class Cephalopoda nOctopuses (order Octopoda) differ from squid and cuttlefish by having no shell and living in rocky reefs and coral.  Octopuses are probably the most intelligent invertebrates. Mollusks – A Bag, a Scraper, and a Foot Chapter 5 Pages 5-45 to 5-48

MenuPreviousNext Classes of Phylum Mollusca nExample of an octopus.

MenuPreviousNext Classes of Phylum Mollusca nExample of an octopus (Mimic octopus).

MenuPreviousNext Classes of Phylum Mollusca nExample of an octopus (the blue ringed octopus). VENOMOUS!!!

MenuPreviousNext Classes of Phylum Mollusca nExample of an octopus (the blue ringed octopus).

MenuPreviousNext Classes of Phylum Mollusca nExample of an octopus (the blue ringed octopus).

MenuPreviousNext Cephalopod Fun Facts nFor many years it was believed that the largest cephalopod was Architeuthis (the giant squid) which grew to about feet in length but recently in 2005 it was discovered that a new species of squid to be even larger, Mesonychoteuthis hamiltoni, the Colossal squid!

MenuPreviousNext Cephalopod Fun Facts nExample of a giant squid.

MenuPreviousNext Cephalopod Fun Facts nPicture of the very first living giant squid taken in Fall 2006.

MenuPreviousNext Cephalopod Fun Facts nExample of a colossal squid.

MenuPreviousNext Cephalopod Fun Facts nPicture of the largest living cephalopod every caught (990 lbs. on Feb. 22, 2007).

MenuPreviousNext Cephalopod Fun Facts nPicture of the largest living cephalopod every caught (990 lbs. on Feb. 22, 2007).

MenuPreviousNext Cephalopod Fun Facts Do you know what kind of mouth a cephalopod has?

MenuPreviousNext Cephalopod Fun Facts They have a beak.

MenuPreviousNext Cephalopod Fun Facts nThe most ancient of the cephalopods is the chambered nautilus.

MenuPreviousNext Cephalopod Fun Facts nExample of a nautilus.

MenuPreviousNext Cephalopod Fun Facts nExample of a nautilus.

MenuPreviousNext Cephalopod Fun Facts nExample of a nautilus.

MenuPreviousNext The End.