First trip to our grayling stream

On July 25, 2014, Gary and I took our first trip to our grayling study stream along with our collaborator at ADF&G. Our goals were 1) to figure out which stretches of the river will be most suitable for our study, 2) to test our methods for pumping the stomach contents of grayling, and 3) get to know the boat we were borrowing.

Motoring up the Clearwater.
Matt pilots us up the Clearwater as Gary enjoys the scenery.

We were able to catch enough fish to get some diet samples, which we will be sent back to the lab in Georgia to test and practice processing methods.

Jason with a large grayling
Jason with a large grayling

The extraction of diet samples, technically called “gastric lavage” and less technically called “puking” the fish, went fairly well. We did identify some possible improvements in our methods.

Pumping the contents of a grayling's stomach into a whirl-pak
Pumping the contents of a grayling’s stomach into a whirl-pak

The scenery was outstanding, a reminder of how lucky we are to do part of our jobs outdoors in Alaska.




2014-07-25-0010_We accomplished all our objectives for the day.


Leave a Reply

Your email address will not be published. Required fields are marked *