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Induced triploidy in the common carp (Cyprinus carpio L.): a comparison of two methods

Published online by Cambridge University Press:  15 July 1991

Otomar Linhart ,
Martin Flajshans  and
Pavel Kvasnieka
Otomar Linhart
Affiliation:
Research Institute of Fish Culture and Hydrobiology, Department of Fishe Genetics and Breeding, 38925 Vodñany, Czechoslovakia
Martin Flajshans
Affiliation:
Research Institute of Fish Culture and Hydrobiology, Department of Fishe Genetics and Breeding, 38925 Vodñany, Czechoslovakia
Pavel Kvasnieka
Affiliation:
Research Institute of Fish Culture and Hydrobiology, Department of Fishe Genetics and Breeding, 38925 Vodñany, Czechoslovakia
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Abstract

Cold shocks and hydrostatic pressure shocks, respectively, were applied for the induction of bothtriploidy and tetraploidy in the common carp. Cold shocks of 0-2 °C, lasting 40 minutes and starting 2–5 minutes after the activation of gametes and hydrostatic pressure shocks with 1-3-5 minute exposures at 49.03–56.88 MPa (i. e. 7 116-8 225 psi – pounds per square inch), starting 5 minutes after the activation of gametes gave the best results. The tetraploidy induction by cold shocks or hydrostatic pressure shocks resulted either in negligible (1.54%), or in zero yields, respectively. The applicability of particular types of ploidy manipulation and the standardization of shock initiation were discussed.

Keywords

Carptriploidy and tetraploidy inductioncold shockshydrostatic pressure shocksCarpetriploïdietétraploïdieinduction génétiquechocs thermiquespression hydro-statique
Type
Research Article
Information
Aquatic Living Resources , Volume 4 , Issue 3 , July 1991 , pp. 139 - 145
Copyright
© IFREMER-Gauthier-Villars, 1991

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