Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/10275
Appears in Collections:Aquaculture Journal Articles
Peer Review Status: Refereed
Title: Triploidy induction in Nile tilapia, Oreochromis niloticus L. using pressure, heat and cold shocks
Authors: Hussain, M Gulam
Chatterji, Anil
McAndrew, Brendan
Johnstone, Ray
Contact Email: b.j.mcandrew@stir.ac.uk
Keywords: Oreochromis
Triploidy induction
Pressure shock
Heat shock
Cold shock
Issue Date: Jan-1991
Publisher: Springer
Citation: Hussain MG, Chatterji A, McAndrew B & Johnstone R (1991) Triploidy induction in Nile tilapia, Oreochromis niloticus L. using pressure, heat and cold shocks, TAG Theoretical and Applied Genetics, 81 (1), pp. 6-12.
Abstract: The results of a study aimed at the identification of treatment optima for triploidy induction in recently fertilised Oreochromis niloticus L. eggs by altering the intensity, duration and timing of application of pressure, heat and cold shocks are reported. Preliminary, but not directly comparable, trials suggested the following treatments to be close to the individual agent optima. Pressure: 8,000 psi 2-min duration applied 9 min after fertilisation (a.f.); heat: 41 °C, 3.5-min duration applied 5 min a.f., cold: 9°C, 30-min duration applied 7 min a.f. In a directly comparable trial in which the eggs of eight different females were separately exposed to the optimum shocks listed above, individual triploid yields were more variable following cold shocks and mean triploid yields were, therefore, higher following pressure and heat shock. These and other results obtained are presented and the light they shed on the timing of the second meiotic division in this species is discussed.
Type: Journal Article
URI: http://hdl.handle.net/1893/10275
DOI Link: http://dx.doi.org/10.1007/BF00226105
Rights: The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.
Affiliation: University of Stirling
National Institute of Oceanography, India
Aquaculture
Fisheries Research Service

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