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SUMMARY OF OPERATIONS ON CONTRACT NO. W-28-09dmengf33
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FOR THE MONTH OF NOVEMBER 1947.
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The basic program of the Applied Fisheries Laboratory, of
the effect of X-rays upon aquatic organisms, again shared the efforts of
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the staff, with the completion of the preliminary rna
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#Sections I and II.
By.
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Early in November two more marked control male chinook salmon were
recaptured, making a total of 38 irradiated- and control-stock chinooks re~
taken in 1947,
Eight control and seven irradiated egg lots were obtained.
One control egg lot (#13) and one egg lot (#14) from irradiated stock were
recognized at the time of spawning as consisting of poor eggs that would
have been discarded in ordinary hatchery procedure.
By December 2, 1947, almost
complete mortality had been suffered by both of these egg lots,
When these two
egg lots are eliminated from consideration, the percentage mortality of egg
lots from irradiated stock (16%) is significantly (1%-2% level) greater than
that of the controls (3%), the value of "t" being 3.0 for 11 degrees of
freedom.
These eggs will hatch during December and additional data will be available.
We are making a detailed study of thedegree of development of all the embryos
that die before hatching,
Detailed studies will also be made of all malformed
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Observations have continued at Cultus Lake, B. C. Canada, where tHe
entire run of salmon is being checked for the presence of marked fish. In the
% Section mumbers refer to the Project Chronology Chart, revised January 9, 1947.
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