Abstract
IN 1927, Watson1 described the construction of a number of glass microsyringes which he had used for the instrumental insemination of queen honey-bees. The tips of these syringes were straight and the operator holds one of these syringes in line with the long axis of the queen when, introducing it into her vagina. This type of glass syringe was simplified and improved during the course of time both by Watson himself and also by Nolan2 and others; but really satisfactory results were infrequently obtained at this stage.
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References
Watson, L. R., “Controlled Mating of Queenbees” (Hamilton, Ill., 1927).
Nolan, W. J., “Bee Breeding”, U.S.D.A. Yearbook Separate No. 1604 (1937).
Laidlaw, H. H., J. Morph., 74, 429 (1944).
Mackensen, O., and Roberts, W. C., “A Manual for the Artificial Insemination of Queenbees”, U.S.D.A. Bur. Ent. and Plant Quar. ET-250 (1948).
Roberts, W. C., J. Econ. Ent., 40, 445 (1947).
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BUTLER, C. A New Design of Microsyringe Tip for the Instrumental Insemination of Queen Honey-bees. Nature 166, 957–958 (1950). https://doi.org/10.1038/166957a0
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DOI: https://doi.org/10.1038/166957a0
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