The Ecological Determinants of Population Growth in a Drosophila Culture. IV. The Significance of Successive Batches of Larvae

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Abstract
In a normal bottle culture of Drosophila the later hatching flies are usually small, and previous work suggested that their development should be delayed and mortality increased abnormally. This is confirmed by work in which the exptl. batch of larvae is isolated in a mutant (ebony) population. The extent of this mortality, and of developmental retardation, depends on the size of the larval batch. But concurrent changes in the yeast population also affect survival and 1, or possibly 2, such changes in the amt. or quality of the yeasts is shown to modify the numbers or size of flies hatching. These changes of larval survival will influence the course of population growth.
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