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Re: Pressure #2
When we started out working on the barometric pressure study, we
realized that 20 pair was not as big a sample as we would have liked to
have had...and it would have been nice to have some controls,
however...each of the containers had to be cleaned each week, fed each
day and it took 45 minutes each day to pick eggs. The project was a 7
day a week deal.There were so
many eggs some days that the Endler's were being fed Killifish eggs...go
figure. It just ain't going to get any better than it did without some
pretty significant help.
We did find one more very interesting little tease...I was sick on 4
days...four separated days, on which I could not pick the eggs from the
mops. We kept all the stats from the study on an Excel worksheet and
knew the averages for each fish and fish type...so expected to see
numbers on the days following the skipped days would be somewhat higher
in count than the
average. Wrong...each of the four days were followed by a day of average
production...not slightly higher...just average. what we suspect is that
the predation of the eggs is much (way mucho) higher than we had
previously thought. We sort of thought that might be the case because
some of the fish that we had been harvesting 30+ eggs per week were
laying nealry that
many every day during the study. It would be a wonderful study for
someone to design a project that would be able to determing the rate of
predation...it wouldn't surprize me at all to find that the fish were
eating 90+% of their spawn each day...only to lay more the next,
promptly eating most of those also.
Of course, I have designed the project but my wonderful wife hinted that
I would be happier if I finished remodeling the bathroom...oh well.
Regards,
Jim
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