The Rate of Tetraploidy Determination in Rainbow Trout (Oncorhynchus Mykiss) in Embryonated Eggs

Authors

  • Ioan Bencsik Banat's University of Agricultural Sciences and Veterinary Medicine, Faculty of Animal Science and Biotechnologies, 300645 Timisoara,, Calea Aradului Street, No. 119, Romania
  • Nicolae Pacala Banat's University of Agricultural Sciences and Veterinary Medicine, Faculty of Animal Science and Biotechnologies, 300645 Timisoara,, Calea Aradului Street, No. 119, Romania
  • Gabi Dumitrescu Banat's University of Agricultural Sciences and Veterinary Medicine, Faculty of Animal Science and Biotechnologies, 300645 Timisoara,, Calea Aradului Street, No. 119, Romania
  • Dorel Dronca Banat's University of Agricultural Sciences and Veterinary Medicine, Faculty of Animal Science and Biotechnologies, 300645 Timisoara,, Calea Aradului Street, No. 119, Romania
  • Jana Stanculet SC Detergenti SA, 300571 Timisoara,,Calea Stan Vidrighin,No. 5, Romania
  • Liliana Petculescu-Ciochina Banat's University of Agricultural Sciences and Veterinary Medicine, Faculty of Animal Science and Biotechnologies, 300645 Timisoara,, Calea Aradului Street, No. 119, Romania
  • Liliana Boca Banat's University of Agricultural Sciences and Veterinary Medicine, Faculty of Animal Science and Biotechnologies, 300645 Timisoara,, Calea Aradului Street, No. 119, Romania

Keywords:

heat shock, rainbow trout, tetrapoidy, kariotype analysis

Abstract

Polyploidy at fish is characterized by modification of normal diploid chromosome set (2n) to triploid (3n), tetraploid (4n) etc. Experiments were carried out on biological material from rainbow trout (Oncorhynchus mikiss) during the natural period of reproduction. Polyploidy can be induced by exposing the eggs to heat shock. The highest levels of embryo losses are observed in the first two decades of incubation. The success rate of the tetrapolidy induction after 6 hours after fertilization evaluated by karyotype analysis was 66.67%. During the whole incubation period for the experimental group the losses were evaluated at 39.86% from the incubated eggs, and for the control group at 13.48%.

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Published

2023-11-01

Issue

Vol. 44 No. 1 (2011): Scientific Papers: Animal Science and Biotechnologies

Section

Animal Reproduction

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This work is licensed under a Creative Commons Attribution 4.0 International License.