Wednesday, May 7, 2014

Fidalgo Bay 5-2-14


Anacortes WA
Fidalgo Bay
Start Time: 9:30 AM
Finish Time: 5:00 PM
Temps: Mid 60s to Mid 70s

Participants: Jake Heare

I arrived earlier in the morning. I pulled up the hanging devices and broke them down into individual trays. I collected dead, counted live, and photographed trays for size/growth for later analysis. Upon completing these metrics the trays were reorganized into stacks containing one tray from each population at a random level in stack (top, middle, bottom). 3 stacks were then rebuilt and hung off the docks.

The 4th stack was treated with an epsom salt mixture to anesthetize the animals for brooding larvae inspection. One tray was dosed at a time in a 10 gallon mixture of 50/50 sea water/freshwater with 6-8 cups of epsom salt in them (roughly 75-80 g/L). Gaping oysters in each tray were individually inspected for brooding larvae. Once inspection was completed, trays were then transferred to a tub filled with 10-15 gallons of fresh seawater to recover from treatment for 30 minutes to 1 hour depending on recovery rate. In the first tray we had 25 animals open up, in the second we had 40 animals open, in the third there were 30 animals. None of these animals showed any signs of brooding larvae. 

Temperatures logged at Fidalgo Bay from Mar 1 to May 2, 2014. Temps logged every 15 minutes. 






Calm Day at Fidalgo

Sea Otter hangin out by the dock
Sea Otter Hunting for Prey

Sea Otter after capturing large red rock crab

Sea Otter Eating Large Eel.

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