Monthly Archives: September 2016

Day 0 Sampling- Olympia Oyster OA Project

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For my last morning in Washington state, Sam White and myself dissected 48 Olympia oysters for 3 different tissue types as part of an adult Olympia oyster/rock scallop ocean acidification experiment. Sam already wrote up a great summary of the day in his lab notebook. A list of all adult oysters sampled this summer, including those used in the adult OA experiment, can be found here or at the appropriate link under “Datasheets” in this lab notebook. This datasheet includes the date dissected, treatment tub, weight in grams, reproductive status at time of sampling, date of mortality (if oyster died prior to being dissected), and which tissues were samples. To measure size of oyster, I have labelled pictures of every oyster with a ruler in a Dropbox folder. I also wrote up a dissection protocol for subsequent sampling days.

Setting up for adult Olympia oyster OA experiment (20160907-11)

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Wednesday 2016-09-07

In the morning, Natalie and I went to the Taylor Shellfish hatchery to pick up valves for the broodstock OA system. We got to Manchester around 12:30pm and worked on finishing up the plumbing and gluing the PVC. The hoses that were intended to be used to deliver water to the tubs didn’t fit easily on the valves, so we stuck one end in a toaster oven for a minute to make it easier to push on. We hooked up the manifolds to the OA system and let water run through overnight. Then we realized we hadn’t added in coupling for the algae injection port (D’oh!), so that needed to be addressed on Thursday.  We didn’t have time to give algae to the oysters or scallops, so both animals ended up without food overnight.

Oyster Mortalities

  • CA1T (1), BC1T (1), BC2T_058

Need to do: get brand name of valves

Thursday 2016-09-08

  • Used the rest of the white shellfish tags to label oysters that will be used in the adult OA experiment
    • Weighed oysters before adding tag and recorded their tray group during the larval experiment
    • Placed them in a single layer on the bottom of flow-through buckets with seawater and live algae overnight for putty to cure

20160909_132205

  • Checked for mortalities
    • 2 from OR1T (sampled 1)
    • 1 from OR2T (sampled)
  • Figured out the flow and food concentration with Ryan for the scallop tanks
    • Goal is to have at least 100,000 cells per mL of algae
    • Found that when valves are set to 50 the flow into each tub was ~0.85 L/min
    • Added couplings for the algae injection port on the flex hoses leading up to the manifolds
  • Starting around 5pm, took the scallops out of their fish totes and divided them up evenly amongst the 8 treatment tubs, with 11 or 12 scallops per tub. There were 4 fish totes corresponding to the 4 source populations.
    • Scuzz and some soft tissue epiphytes were gently wiped off with gloved hands. Scallops placed so they would not be touching each other
    • Temp of tubs: 15.12degC – 15.37degC, Salinity: 28.6
    • Tote A2 scallops spawned
      • Looked like eggs from 380, 311, 48, 381
    • Tote B2 spawned
      • just eggs from 312
Tub 1A Tub 1B
  • Tote 5: 305, 302
  • Tote 4: 363, 360, 244
  • Tote 3: 63, 45, 241, 57
  • Tote 1: 375, 391, 390
  • Tote 5: 310, 303
  • Tote 4: 240, 361, 358
  • Tote 3: 66, 36, 65
  • Tote 1: 373, 372, 379, 383
Tub 2A Tub 2B
  • Tote 5: 311
  • Tote 4: 246, 359, 237
  • Tote 3: 48, 53, 58, 64, 67
  • Tote 1: 392, 381, 380
  • Tote 5: 312
  • Tote 4: 236, 242, 248
  • Tote 3: 51, 53, 39, 56
  • Tote 1: 374, 370, 387
Tub 3A Tub 3B
  • Tote 5: 309, 300
  • Tote 4: 362, 234, 245
  • Tote 3: 44, 38, 43
  • Tote 1: 377, 388, 393, 384
  • Tote 5: 308, 301
  • Tote 4: 364, 233, 231
  • Tote 3: 37, 50, 54
  • Tote 1: 389, 386, 376
Tub 4A Tub 4B
  • Tote 5: 306, 304
  • Tote 4: 237, 239
  • Tote 3: 59, 52, 60
  • Tote 1: 371, 395, 385, 46
  • Tote 5: 307
  • Tote 4: 243, 247, 238
  • Tote 3: 41, 61, 62, 47
  • Tote 1: 382, 378, 394

 

Friday 2016-09-09

  • Checked for mortalities
    • BC 049
  • Divided up oysters and placed them into clam bags to hang in treatment tubs with scallops.
    • 12 British Columbia oysters per treatment tub
    • 10 California and 10 Oregon oysters per treatment tub
  • Dissected adductor muscle from extra BC oysters not used in OA experiment
    • Recorded weight, reproductive status, tray group, and took pics for size
    • BC1T A, B, 93, C, D, 101
    • BC2T A, 111, 110, B, C, D, E, 108
  • Checked algae in one A tub and 1 B tub using Coulter counter
    • 92,921 cells/ml, 99,070 cells/ml

 

Sunday 2016-09-11

  • Recorded which oysters were in which experiment tub and made sure numbers were balanced, in case an oyster gets misplaced when cleaning
  • Checked for mortalities
    • 024W (CA)
    • 058W
  • Weighed and took pictures for size of any oysters I did not already have data for
  • Dissected adductor muscle into RNALater from 12 oysters that were in tray OR1T during larval experiment
    • Labelled OR1T A-L
  • Processed the rest of the tiles from the acidification larval experiment
    • These are 4.5in diameter PVC tiles that were roughed up on both sides with sandpaper and placed with oyster larvae 14 days post-release
      • Only added if at least 20% survival in treatment
    • To process them I counted the number of live and dead oysters per tile, took a pic of both sides with a ruler, and scraped off juveniles into RNALater if there were at least 5 living oysters on the tile

2016-09-01

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Thursday 2016-09-01

  • Checked for mortalities
    • CA1T (2), CA4B (2), CA2T (1), 011 from OR1T
  • I bought 150 white shellfish tags (1/8″ x 1/4″) labelled 000-149 in order to label some of the oysters to be used in the OA experiment. This is to help determine which population an oyster belongs to in case it gets mixed up during sampling.
    • Sean used seawater epoxy to attach tags to some of the oysters that will be used in the adult OA experiment. Before attaching tags, he recorded weight for the oyster in grams. He tried to randomize the oysters chosen for the experiment by size.
    • Since some oysters already had orange shellfish tags (labelled 001-074) from the summer larval experiment, all subsequent labels will have a “W” to denote the ID of an oyster with a white tag. To cure the epoxy, these oysters were left in a single layer on the bottom of a bucket with an airstone and flow-through of algae and seawater.

epoxy

  • I took pictures and counted the number of live oysters on some of the tiles from the larval experiment, as well as emptied out some silos that still had larvae in them. If any larvae had set on the side of the silos, I counted them and scraped them off into a 1.5 mL tube with RNALater. Tiles with oysters on them were left hanging in a bucket fed by the oyster broodstock manifold.
    • Tiles w/oysters: B61, B89, B67, A48
    • Tiles w/out oysters: A82, A71
    • Silos: A26, A48, A27
  • I dissected adductor muscle from some California and Oregon oysters that were not going to be used in the adult OA experiment.
    • CA4B_A, CA4B_B, CA4B_C (tiny oyster attached to CA4B_B),CA4B_D, CA4B_E, CA4B_F, CA4B_G, CA4B_H, CA4B_I, CA4B_J, CA4B_K
    • OR2T_E, OR2T_F, OR2T_G, OR2T_H, OR2T_I, OR2T_J, OR2T_K, OR2T_L, OR2T_M, OR2T_N, OR2T_O, OR2T_P, OR2T_Q, OR2T_R
    • OR5B_A, OR5B_B
    • OR2B_A, OR2B_B (attached to C), OR2B_C (attached to B), OR2B_D, OR2B_E, OR2B_F