Article (Scientific journals)
Induce triploidy by heat shock in Eurasian perch, Perca fluviatilis
Rougeot, Carole; Minet, Laurent; Prignon, Christian et al.
2003In Aquatic Living Resources, 16 (2, MAR-APR), p. 90-94
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Keywords :
ploidy induction; heat shocks; Perca fluviatilis
Abstract :
[en] In Eurasian perch (Perca fluviatilis), females grow significantly faster than males. Moreover, gonadal development has a significant negative impact on somatic growth and fillet yield. In order to induce sterility, triploidy induction was attempted by subjecting fertilised eggs to heat shocks. Different combinations of temperature (28, 30, 34, 35 and 36 degreesC), duration (2, 5, 10 and 25 min) and time of shock initiation (TI = 3, 5 and 7 min post-fertilisation) were tested. Flow cytometry analysis was used to assess ploidy level of control and heat-shocked larvae. Low intensity (28-30 degreesC) and long duration (10 and 25 min) shocks lead to significantly higher survival (44 +/- 26%) and triploidisation (71 +/- 26%) rates than high intensity (34-36 degreesC) and short duration (2 and 5 min) shocks (17 +/- 19% and 21 +/- 26%, respectively). The most effective conditions for efficient triploidy induction were low intensity shock of 30 degreesC, applied 5 min post-fertilisation for 25 min. This treatment led to the production of all-triploid populations (100%) with up to 43% survival rate. (C) 2003 Editions scientifiques et medicales Elsevier SAS and Ifremer/IRD/Inra/Cemagref. All rights reserved.
Disciplines :
Aquatic sciences & oceanology
Author, co-author :
Rougeot, Carole ;  Université de Liège - ULiège > Centre de formation et de recherche en aquaculture (CEFRA)
Minet, Laurent
Prignon, Christian ;  Université de Liège - ULiège > Centre de formation et de recherche en aquaculture (CEFRA)
Vanderplasschen, Alain ;  Université de Liège - ULiège > Immunologie et vaccinologie
Detry, Bruno;  Université de Liège - ULiège > Immunologie et vaccinologie
Pastoret, Paul-Pierre ;  Université de Liège - ULiège > Département des maladies infectieuses et parasitaires > Département des maladies infectieuses et parasitaires
Mélard, Charles ;  Université de Liège - ULiège > Centre de formation et de recherche en aquaculture (CEFRA)
Language :
English
Title :
Induce triploidy by heat shock in Eurasian perch, Perca fluviatilis
Publication date :
2003
Journal title :
Aquatic Living Resources
ISSN :
0990-7440
eISSN :
1765-2952
Publisher :
Gauthier-Villars/Editions Elsevier, Paris, France
Volume :
16
Issue :
2, MAR-APR
Pages :
90-94
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 15 June 2009

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