Abstract
The photoresponses of natural populations ofD. pseudoobscura andD. persimilis, occurring sympatrically, are measured in two environmental conditions (“at rest” and “disturbed”). Comparisons of the responses, intraspecifically and interspecifically, lead to the following conclusions. These must be considered within the confines of the operational nature of the measurement of laboratory photoresponses. (1) Within each species population, significant nonenvironmental differentiation has been allowed or produced by selection in the “at rest” photoresponse. No significant nonenvironmental differentiation is found in the photoresponse measured in a disturbed condition. (2) Within each species population, a higher mean “disturbed” photoresponse has been favored. The intensities or patterns of selection acting on these two photoresponses have differed such that more intrapopulation differentiation has been allowed or produced in the “at rest” photoresponse. (3) A higher mean photoresponse has been favored inD. persimilis for both conditions. The intensities or patterns of selection acting between these two species populations on the “at rest” photoresponse have differed such that more intrapopulation differentiation has been allowed or produced inD. persimilis. (4) Comparisons of this study with one on intraspecific and interspecific differentiaiton in wing length lead to the conclusion that the selective differences inferred above have acted at a level more specifically attuned to photobehavior.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Bliss, C. I. (1967).Statistics in Biology, Vol. I, McGraw-Hill, New York.
Dobzhansky, T. (1970).Genetics of the Evolutionary Process, Columbia University Press, New York.
Dobzhansky, T., and Spassky, B. (1969). Artificial and natural selection for two behavioral traits inDrosophila pseudoobscura.Proc. Natl. Acad. Sci. 62:75–80.
Falconer, D. S. (1967).Introduction to Quantitative Genetics, The Ronald Press, New York.
Ferguson, G. A. (1966).Statistical Analysis in Psychology and Education, McGraw-Hill, Toronto.
Lewontin, R. (1959). On the anomalous response ofDrosophila pseudoobscura to light.Am. Naturalist 93:321–328.
Perttunen, V. (1958). The reversal of positive phototaxis by low temperatures inBlastophagus piniperda L. (Col., Scolytidae).Ann. Entomol. Fenn. 24:12–18.
Pittendrigh, C. S. (1958). Adaptation, natural selection and behavior. In Roe, A., and Simpson, G. G. (eds.),Behavior and Evolution, Yale University Press, New Haven, pp. 390–416.
Rockwell, R. F., and Seiger, M. B. (1973a). A comparative study of photoresponse inD. pseudoobscura andD. persimilis.Behav. Genet. 3:163–172.
Rockwell, R. F., and Seiger, M. B. (1973b). Phototaxis inDrosophila: A critical evaluation.Am. Scientist 61:339–345.
Simpson, G. G., Roe, A., and Lewontin, R. (1960).Quantitative Zoology, Harcourt, Brace and World, New York.
Sokal, R., and Rohlf, F. J. (1969).Biometry, Freeman, San Francisco.
Sokoloff, A. (1966). Morphological variation in natural and experimental populations ofDrosophila pseudoobscura andD. persimilis.Evolution 20:49–71.
Spassky, B., and Dobzhansky, T. (1967). Response of various strains ofDrosophila pseudoobscura andDrosophila persimilis to light and gravity.Am. Naturalist 101:59–63.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Rockwell, R.F., Cooke, F. & Harmsen, R. Photobehavioral differentiation in natural populations ofDrosophila pseudoobscura andDrosophila persimilis . Behav Genet 5, 189–202 (1975). https://doi.org/10.1007/BF01066811
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF01066811