Gastropods S10

Gastropods S10 - ZOO 115 Invertebrate Zoology Mollusca...

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ZOO 115 Invertebrate Zoology Mollusca Polyplacophora Gastropoda
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Mollusca – Classes Polyplacophora (chitons) Monoplacophora Gastropoda Bivalvia Cephalopoda
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Mollusca - Polyplacophora Lives in rocky- intertidal region It is an herbivore (except for one species)
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Mollusca - Polyplacophora Has series of plates for a shell. Mantle Covers the entire dorsal surface Lateral portion referred to as a girdle
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Mollusca - Polyplacophora Locomotion Broad flat foot Waves of muscular contraction on mucus Can curl itself into a ball if dislodged Defense Uses both foot and mantle to adhere to the substrate Inner mantle elevated slightly to create suction Almost impossible to dislodge
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Mollusca - Polyplacophora Respiration On each side of the animal, they have a row of bipectinate gills splits the mantle cavity lengthwise substrate - Oxygenated blood from the the dorsal aorta At the rear of the animal mantle forms an exhalant opening What happens when the animal pulls the mantle down for defense? wwwbio200.nsm.buffalo.edu/labs/tutor/Chiton/ wwwbio200.nsm.buffalo.edu/labs/tutor/Chiton/ From gills
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Mollusca - Polyplacophora Circulation Hemocoel to heart atria Atria to ventricle Ventricle to dorsal aorta Dorsal aorta to tissues Tissues to hemocoel
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Gastropods S10 - ZOO 115 Invertebrate Zoology Mollusca...

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