Experimental studies on the duration of life. IX. New life tables for Drosophila. X. The duration of life of Drosophila melanogaster in the complete absence of food
Pearl, R.; Parker, S.L.
American Naturalist, 58: 71-80, 193-218
In the first of these Studies we presented life tables for wild type and quintuple flies. These tables were based upon the collected data then available from the control portions of experiments in which these two sorts had been used. In the period which has elapsed since the publication of these pioneer life tables for Drosophila our work has been greatly extended, and in a number of particulars refined. Especially we have come to use in all the experimental work stocks which are more homogeneous genetically. Thus, for a long-lived stock we now use, instead of a random sample of a mass culture of wild type flies as was formerly the case, a random sample of our line 107, which is an inbred, long-lived "pure" strain. The origin of this line we have described in the second of these Studies. By "pure" we mean, of course, only that it is a highly inbred and homozygous strain. Similarly, we have come to use for a short-lived stock in experimental work pure vestigial strains, the study of Gonzalez having shown that it is this mutant gene alone which is chiefly responsible for (or invariably associated with) the observed brachybioty of quintuple flies.