Hi Ecologgers, I am going to be running some experiments on steelehead and chinook to get sub-daily consumption rates and I want to try to standardize our methods as much as possible. Since we are trying to quantify consumption, using prey that are relatively uniform in size, easy to weigh, and that hold together over the duration of the trial (24hr) are important criteria (to facilitate complete recovery of uneaten prey). We are attempting to use frozen brine shrimp, however, preliminary trials in which the prey were added to the tanks without fish and subsequently recovered indicated that brine shrimp are difficult to recover and do not hold up well after 24hrs in the water. Any suggestions on prey items or methods would be greatly appreciated!
Thanks! Maya Friedman maya.frie...@noaa.gov 110 Shaffer Road Santa Cruz, CA 95060 Phone: (831) 420-3916
