Freshwater Mussels: Ecology and Biology

The video discusses the over 300 species of freshwater mussels in North America, focusing on their unique reproductive relationship with fish. Mussels release larvae that attach to fish gills, allowing them to move upstream and remain in their natural habitat. The video highlights the Eastern elliptio, a common mussel species, and explains their role in filtering water and bio-accumulating river substances. Mussels can live from 7 to 100 years, serving as a food source for various species.

How many species of freshwater mussels are found in North America?

• Over 400

• Over 300

• Over 200

• Over 100

What is essential for freshwater mussels to complete their life cycle?

• Abundant algae

• Sufficient sunlight

• Presence of specific fish

• Correct water temperature

How do freshwater mussel larvae attach to fish?

• By clinging to the fins

• By entering the mouth

• By attaching to the gills

• Through the skin

What is the duration that mussel larvae remain on fish?

• 4-6 weeks

• 6-8 weeks

• 2-4 weeks

• 1-2 weeks

Why is the fish-mussel relationship crucial for mussels?

• It protects them from predators

• It provides them with oxygen

• It allows them to move upstream

• It helps them find food

Where do most freshwater mussels live?

• On the water surface

• In the substrate

• In coastal areas

• In open water

What do freshwater mussels filter from the water?

• Sediment and nutrients

• Fish and algae

• Rocks and sand

• Plants and insects

Which freshwater mussel is most abundant along the East Coast?

• Western elliptio

• Southern elliptio

• Eastern elliptio

• Northern elliptio

What is the lifespan range of small freshwater mussel species?

• 1-3 years

• 3-5 years

• 7-10 years

• 10-15 years

What ecological role do freshwater mussels play in rivers?

• They increase water temperature

• They provide shelter for fish

• They filter and clean the water

• They produce oxygen