FINAL WORLD CUP 2010

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FINAL WORLD CUP 2010. VS. WhaT is the score???. What is the kind of animal can predict the winner??? . Paul The Octopus. Phylum Mollusca. CHARACTERISTICS. Mollusca molluscus means soft, are group of soft-body animals. Second largest phylum in the animal kingdom - PowerPoint PPT Presentation

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FINAL WORLD CUP 2010VSWhaT is the score???

What is the kind of animal can predict the winner???

Paul The Octopus

Phylum Mollusca6

Mollusca molluscus means soft,are group of soft-body animals.Second largest phylum in the animal kingdomA milimeter till 18 meter length.Occur in a wide variety of environments

CHARACTERISTICS

CHARACTERISTICGeneral Body Plan HeadVentrally located muscular footDorsally located visceral massCovered by a fleshy outgrowth of the body wall called a mantle/palliumRadula a tongue-like structure bearing transvers rows of chitinous teeth (except for bivalves) Complete digestive tract, mouth, esophagus, stomach, intestine, and anus.Gonads in visceral mass8

Skeletal- Mantle may secretes a shell. Use hydrostatic pressure for ventral muscular foot.Muscles -Ventral muscular foot and other muscles present.Digestive- complete complex with salivary glands, digestive gland and Rasping tongue (Radula).Circulatory - Open Circulatory System except for Cephalopoda. Dorsal heart, usually in a pericardial cavity.Respiratory - Ctenidia (gills) in mantle cavity, respiratory pigment.

System Function

Excretory- by nephridia act as kidney usually connecting to the pericardial cavity, Nervous - Nerve ring with various pairs of gangliatwo pairs of nerve cords, one innervating the foot, the other the visceral mass (modified ventral ladder-like system)Integumentary - MantleEndocrine - nervous systems produces hormones.Reproductive - varied- monoecious, or dioecious. Larva in marine = trochophore and veliger, in freshwater clam is glochidium.

Class Gastropoda

Class Bivalvia

Class CephalopodaCLASSIFICATION11

Class GastropodaGastropoda gaster=belly, podos=food Members usually sluggish and sedentaryMostly with asymmetrical bodiesMove couse muscular contraction, that satrt from posterior till anteriorUnivalves, Shell usually spiral, distinct head, scraping radula.Visceral mass typically turned 180 counterclockwise = torsion.

12

General Stucture of Gastropoda

RADULAToothed chitinous ribbon in the mouth of most mollusksused for cutting and chewing food before it enters the esophagusIt is present in all molluscs except bivalves

15

Pila (freshwater kuhol) Class Gastropoda

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Haliotis (abalone); Class Gastropoda

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Turbo (turban snailClass Gastropoda

18

Cypraea (cowries) Class Gastropoda

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Nudibranchs

Spanish shawl

Sea slug20

Class Bivalvia / PelecypodaBivalvia bi= two, valvia=valveHatchet/axe shaped foot in burrowersHead lacks eyes, radula and tentaclesShell of two lateral valves, with dorsal hinge.Mantle of flattened right and left lobes. Posterior margin commonly forming siphonsLabial palps beside mouthHas ligament at dorsal end, act as hingeBivalve shell composed of periostracum, prismatic, nacreus layer.

Tridacna (giant clam) Class Bivalvia

Spondylus (scallop) Class Bivalvia

S. princeps

Chlamys (scallop) Class Bivalvia

C. islandicus

C. swifti

Perna (mussel) Class Bivalvia

P. veridis

Anodonta (freshwater clam) Class Bivalvia

A. suborbiculata

A. anatina

Class CephalopodaCephalopoda chepalo= head, podos=foodFree-swimmingFast movingActive carnivoresElongated bodySkeleton may be external, internal or absentFoot developed into prehensile arms or tentaclesLarge head with conspicuous eyesVentral foot modified into tentacles(are arms) with suckers

Class CephalopodaWell-defined head Complex eyesBrain in cartilaginous cranium(+) radulaBeak-like jawsTentacles surrounding mouth

Loligo (squid) Class Cephalopoda

The Role of Mollusca for HumanA high-protein sourceJewelry such as pearl oysterDecoration and buttons such as the shell of rock oysterTerrazo materials such as the shell of Tricadacna sp

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