|A racing "kinetic sculpture"|
|OSU slocum glider|
Inside the festival, there were many booths with educational displays from organizations around Oregon and also many booths from different departments at OSU. One of the booths was representing the glider to the right. This device is used to measure oceanic conditions, recording data such as temperature, salinity and dissolved oxygen levels, which is used in understanding upwelling and hypoxia. The great thing about the glider is that it is self propelled, using something similar to a swim bladder, taking on and off sea water as needed to propel itself in a porpoise-like way along transects off the Oregon coast. This is extremely useful as the glider can amass a great deal of data and periodically sends all its information on via satellite, all on its own! Here is the link to the OSU's glider wepage:
Back at Hatfield, all of the interns had the opportunity to tour NOAA's R/V Bill M. Shamata and The University of Washington's R/V Thomas G. Thompson, both of which were docked in Newport for a few days.
|Scale and fish ruler talk to computer:|
this setup makes weighing and measuring
large amounts of fish on the Shamata super efficient!
|The Bell M. Shamata does fish surveys from|
California to British Colombia. Currently,
they are specifically monitoring Hake and anchovies.
|R/V Thompson with ROPOS ready to decend. ROPOS: Remotely Operated Platform for Ocean Sciences. Image from|
|On the Thompson: this sophisticated machine is used to|
survey Ocean floors up to 5000 meters deep! It is equipped with lights and cameras as well as remote controlled "hands".
|Source: Trematodes of North America by Stewart C. Schell.|
|Lettuce, snails and parasites|
(not visible with the naked eye)
Next on the itinerary was a snailing adventure on the Selitz river, collecting fresh water snails for a fellow intern's REU project with Kim Jacobson's parasitology lab. As many of the beam trawls in our data set have come from the mouth of the Selitz river, it was neat to be able to do some data collection in this river, and the weather was beautifully perfect as well! The objective of the trip was to collect some hundred of these freshwater snails in order to identify the various trematodes living inside of them. Back at the lab, we could see that most of them did have at least one type of trematode, as they came out of the shells over night and wriggled around in the Petri dish in cercaria form (see diagram above). If the snails had still been in the river, these trematodes would then have found a salmon to latch on to or be eaten by (depending on which species of trematode they were). In the salmon they would live and thrive in the posterior kidney until the fish got eaten by a some bird or mammal, such as a dog. At this point, a harmful bacteria which would have been living on the trematode the entire time would cause the dog to be very sick, also known as "salmon poisoning". This is why it is never a good idea to let your puppy eat raw salmon!
Speaking of smaller organisms living within larger ones, this is a Pea Crab found within a gaper clam destined for dinner last night.
|The tragic end to a commensal relationship|
Check it out the link! It is a very concise and helpful description of the little guys.
|My very first fishing licence: watch out shellfish!|
|The amazing neck of a Gaper clam found in |
the mudflats of our front yard
|Crying cockles and muscles alive alive oh!|
|A beautiful and tasty way to end the week.|
I am so grateful to have been able to experience
wild harvesting the bounty of Oregon's coast.