spotSpotlight On: Fish - we have two objectives in working with fish on this cruise. The first is to consider what fish morphology (body and fin shape and the position of the eyes and mouth) can tell us about the feeding strategies of a particular species. We have brought a collection of fresh fish on board and will take a look at them, seeking to deduce some characteristics of their life history. Second, we are interested in what fish eat, i.e. their position in the food web. In Lake Superior, lake trout occupy the top position in the food web. We have a hundred or so frozen lake trout stomachs with us and our students will dissect these and examine their contents to find out ‘how to make a lake trout'.

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Fish class lecture

Fish class lecture

Unpacking the Lake Superior  fish

Unpacking the fish

Dr. Auer is holding a Lake Superior Sucker

Dr. Auer is holding a Lake Superior Sucker

 

Dr. Auer shown holding a Lake Superior Burbot

Dr. Auer shown holding a Lake Superior Burbot

3297

Whitefish

3302

Herring

Participants examine the Lake Superior around the tarp

Participants examine the Lake Superior around the tarp

Surgery

Surgery

Opening fish stomach

Opening fish stomach

What will we find in fish stomach?

What will we find in fish stomach?

insects that were inside a fish stomac

Flies and insects that were inside a fish stomach

Flies and insects that were inside a fish stomach

Flies and insects that were inside a fish stomach

Little fish also found in fish stomach

Little fish also found in fish stomach

Microscope in RV Lake Guardian lab

Microscope in RV Lake Guardian lab

Magnified fish scale

Magnified fish scale

 

Fish Ecology on Deck


 

See the Fish Ecology on Deck

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Civil & Environmental Engineering Department at Michigan Tech