Environmental Science Review

Lab Practical

What can macroinvertebrates indicate in streams?

Estimating the water quality and stream community overall health.

What is the immature period called in macroinvertebrates?

Nymphal stage

What are examples of macroinvertebrates the undergo the nymphal stage?

Mayflies, dragonflies, damselflies, stoneflies, and true bugs.

What are the four stages of metamorphosis?

Egg, larva, pupa, and adult.

What are the four stages of metamorphosis in order?

Egg, larva, pupa, and adult

What are examples of macroinvertebrates that undergo metamorphosis?

True flies, beetles, caddisflies, dobsonflies.

What is the length of a normal life cycle for macroinvertebrates?

Two weeks to up to two years.

What do macroinverbrates mainly eat?

Large detrital pieces and microorganisms (fungi and bacteria)

What are shredders?

The group that break down leaves into fine particles.

What macroinvertebrates are shredders?

Crane flies, caddisflies and stoneflies, sowbugs, and scuds.

What do the collectors do?

They use various methods to filter or gather fine particles left over.

What macroinvertebrates are collectors?

Mayflies and midges.

What do the grazers (scrapers) do?

They feed on the algae that grow on the surface of rocks.

What macroinvertebrates fall under the group of grazers (scrapers)?

Dobsonflies and dragonflies.

What macroinvertebrate is this?

Mayfly

What macroinvertebrate is this?

Stonefly

What macroinvertebrate is this?

Caddisfly

What macroinvertebrate is this?

Caddisfly

What macroinvertebrate is this?

Caddisfly

What macroinvertebrate is this?

Hellagrammite

What macroinvertebrate is this?

Dragonfly larvae

What macroinvertebrate is this?

Damselfly larvae

What macroinvertebrate is this?

Water penny