Ch. 5

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Ch. 5 Large Aquatic Animals
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Invertebrates
Phyla Mollusca
The Gastropoda and Bivalvia
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Freshwater Snails
Size Range 3-25 mm long
Habitat calm areas of streams, ponds, lakes
Food algae, dead or decaying plant material ?
radula
Relatively pollution tolerant
Hermaphroditic
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Freshwater Snails
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Freshwater Bivalves
Size Range 3-250 mm long
Habitat benthic areas of streams, ponds, lakes
Food fine particulate matter ? No radula
Burrow or attach to substrate with byssal threads
Hermaphroditic or separate sexes
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Unionid Life Cycle
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Zebra Mussels
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Fishes
Phylum Chordata
Subphylum Vertebrata
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Fishes
Three Classes
AGNATHA primitive jawless fish Lampreys and
Hagfish CHONDRICHTHYES jawed with
cartilaginous skeletons Sharks, Rays, Rat-Fishes
OSTEICHTHYES fish with bony skeletons Lungfish,
Trout, Bass, Salmon, Perch 3 most common
orders Cypriniformes, Perciformes, Siluriformes
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OSTEICHTHYES 3 most common orders
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Determinants of Fish Populations Species
Interactions
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Determinants of Fish Populations Variation in
Habitat Quality
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Determinants of Fish Populations Stream Order
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Fish Behavior
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Fish Behavior Size Selective Feeding
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Fish Behavior Food Specialists
planktivore
piscivore
detritivore
herbivore
benthivore
omnivore
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Other Vertebrates
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Aquatic Macrophytes
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Distribution of Macrophytes Classification by
Growth Habit
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Macroalgae
Charophyceae
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Aquatic Mosses
Nonvascular Plants
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Flowering Plants
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Invasive Plants
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Homework Assignment 4
p. 139, question 3 p. 158, questions 7 and 9 (10
points) Submit your answers typed and written in
complete sentences. Explain your answers (i.e.
why).