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SUMMARY OF OPERATIONS ON CONTRACT NO. ¥-28-094-eng-338p > tye
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POR THE MONTH OF APRIL 1948.
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Project I.#
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Basic studies of the effect of X-rays upon fish tn varkayg2"
stages of development.
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Section I and II#
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Date:
The young chinook salmon fingerlings (F, generation) produced
from the 1947 spawning of adults from irradiated (Loo r) and control
stock continue to develop.
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Mortality records were kept on the loss
experienced by the offspring of each female.
Total cumlative
mortalities as well as the periodic mortalities at various stages
of development are being tested for statistical significance.
These data together with a summary of th
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Section XI a - XI b
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The young fish in these sections are the second generation (Fo)
offspring of the adult rainbow trout exposed to X-rays and spawned
in 1945.
As a part of the study program on these fish the entire
Lot were individually weighed and measured to provide data for cone
tinuing the study of growth in length and weight,
Some of the male fish in this group are sexually mature but no
attempts were made to use their spam for fertilization experiments
because of a lack of females of the same age class with mature eggs.
Project ¥.
Laboratory experiments using Bikini "md" and coral rocks as
sources of fission Produote are Sumarisecs
BEST COPY AVAILABLE
# Project and section numbers note?to the Project Chronology Chart and
Summary, UWFI-9, revised: ‘March 11, 1948.
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