Measuring up

Yesterday we did some measuring of the seed and consolidated them into single water source.

Here is what it looked like when we started.
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And at the individual tank view.
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From here ducks were transferred to Taylor pails. Below are photos from each cohort.
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Eight siblings were added to each pail as they were being measured – See Laura’s post. They were place nicely in a tank.
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Water added.

And there you have it.

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Trial 3 Update

Trial 3 is now on Day4 and has been sampled 3 times (Day 0, 2, 4).  The larvae are experiencing unexpected early mortality in comparison to Trial 2.  From the weight estimate of ~6mill larvae on Day 0, the total dropped to 3.5mill on Day2, and to only ~186,000 on Day4.  Both treatments declined sharply, but pH 7.38 showed a greater mortality than pH 7.01 by Day4.running_carbonate_chemistry_treatments_Trial3

We are checking with Taylor to see how well the rest of the batch survived. Neither the chemistry data nor cell counts seem to show any causative factor for the mortality. Similar to the first two trials, the pattern of greater survival at lower pH was seen in Trial 3 as well.  I also measured flow rates in the tanks, which were equal at ~430ml min-1.