Unit 1 DQB: Rene, Sadie, Hazel Shraddha by rene !!

renecor6788 — 2024-10-03 15:53:38 UTC

trout eat small fish and vertebrates

2024-10-04 15:46:46 UTC

What trout eat

renecor6788 — 2024-10-04 15:49:17 UTC

Mature lake trout eat vertebrates such as rainbow smelt, sculpin, chub, and alewives. This is because they are much bigger than their prey. Small and young trout prey on small insects and small invertebrates such shrimp and crayfish. These invertebrates are larger than the insects but still small enough for the small trout to eat them.

2024-10-04 15:52:49 UTC

Sculpin, rainbow smelt, chub and alewives (trout's prey) all eat plankton.

What do trout eat?

2024-10-04 15:56:50 UTC

Big trout eat fish. Small trout eat invertebrates (fish without backbones). They also eat freshwater shrimp, crayfish, sculpins, rainbow smelt, chub, and alewives. Baby trout eat young insects.

Trout food web

2024-10-09 16:03:57 UTC

2024-10-09 16:27:19 UTC

Yellow perches eat lake herrings, aquatic insects, and leeches.

2024-10-11 15:28:44 UTC

Some lake tout can live up to 70 years

Plankton

renecor6788 — 2024-10-11 15:29:18 UTC

There has been a reduction in plankton and phytoplankton in Lake Michigan and Lake Huron

Great Blue Heron Increase

2024-10-11 15:31:44 UTC

There has been an increase in the Great Blue Heron population by ten percent starting in 1960. (According to Bird Life Data Zone.

Question: Are trout's predators over populating?

2024-10-11 15:31:50 UTC

Trout's predators (Great Blue Herons and Walleyes) are not overpopulating.

Question

2024-10-18 15:31:11 UTC

Q: How tall are Great Blue Herons?

A: They are 4.5 Feet Tall.

Question: Is chubb decreasing?

2024-10-18 15:32:29 UTC

In 1967 it was put on the endangered species list, because of, "alteration of river habitats by large mainstem dams."

2024-10-18 15:37:03 UTC

great blue herons have a 6-7 foot wingspan

Question

2024-10-18 15:39:01 UTC

Q: Which Great Lake hosts the most Lake Trout?

A: Lake Superior and Parts of Lake Michigan.

Have Rainbow Smelt decreased?

renecor6788 — 2024-10-18 15:39:24 UTC

Between 1970 and 1980, there was a decrease in rainbow smelt due to a rise in erosion and dams.

2024-10-18 15:39:53 UTC

young trout eat plankton and insect larvae and adults prefer fish.

Have Walleye increased?

renecor6788 — 2024-10-18 15:41:39 UTC

No. The walleye population is stable

Question: Have Alewives been decreasing?

2024-10-18 15:44:16 UTC

According to Conservation Gateway, "The alewife population in Lake Michigan has declined in the last decade."

2024-10-18 15:45:13 UTC

when fish eggs are presented then trout will eat them.

Have Lake Whitefish decreased?

renecor6788 — 2024-10-18 15:46:29 UTC

In 1950, Lake Whitefish declined due to exploitation, habitat degradation, and invasive species introductions.

Why are Lake Trout decreasing?

2024-11-06 22:36:36 UTC

Lake Trout are decreasing because of the invasive species, Sea Lamprey. There are too many Sea Lamprey, and they are hurting the trout (and other fish) a LOT.

What are people doing to stop the Sea Lamprey?

2024-11-06 22:43:04 UTC

People have been injecting fluids/poisonous things into some of the male Lampreys, so that when they mate, the female Lampreys also get the poison inside them. Also, they have been putting Lampricide in streams and ponds (it's not poisonous to other animals) to kill the sea lamprey.

2024-11-08 16:21:35 UTC

animals that suck the blood of trout

Puffins

2024-11-13 17:10:09 UTC

Puffin population decreased due to migration of cold water plankton. But now they have a stable population of 12-14 million. :)