Abstract
NATURALLY inseminated eggs of the desert pupfish, Cyprinodon macularius Baird and Girard1, were transferred approximately 4 hr. after fertilization into combinations of 5 different salinities (fresh water, 35, 45, 55 and 70 parts per thousand) and three different concentrations of ambient dissolved oxygen (equivalent to approximately 70, 100 or 300 per cent air saturation) at 27.5° ± 0.1° C. and 31.0° ± 0.1° C. Developmental rate was then determined as time between fertilization and hatching and as time to attainment of defined embryonic stages2,3.
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References
Baird, S. F., and Girard, C., Proc. Acad. Nat. Sci. Phila., 6, 387 (1853).
Kinne, O., Phys. Z., 33, 288 (1960).
Kinne, O., and Kinne, E. M., Canad. J. Zool. (in the press).
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KINNE, O., KINNE, E. Effects of Salinity and Oxygen on Developmental Rates in a Cyprinodont Fish. Nature 193, 1097–1098 (1962). https://doi.org/10.1038/1931097a0
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DOI: https://doi.org/10.1038/1931097a0
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