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Production of triploid, doubled haploid (DH) and meiogynogenetic brook trout (Salvelinus fontinalis) – efficiency and development of body deformities Cover

Production of triploid, doubled haploid (DH) and meiogynogenetic brook trout (Salvelinus fontinalis) – efficiency and development of body deformities

Open Access
|Jan 2021

Abstract

In the present research we produced triploid, mitogynogenetic (doubled haploid; DH) and meiogynogenetic brook trout (Salvelinus fontinalis) to examine efficiency of these technologies and potential susceptibility of chromosome set manipulated individuals for the spinal disorders. Triploidy was induced by shocking (High Hydrostatic Pressure – HHP) of fertilized eggs 30 min. after insemination. In turn, gynogenetic development was induced by activation of eggs with UV-irradiated sperm. Activated eggs were then exposed to HHP shock applied 30 and 420 minutes after insemination to provide meiogynogenotes and gynogenetic DHs, respectively. When compared to non-manipulated diploids, the highest survival rates were observed among triploid brook trout while DHs showed the highest mortality. Malformation rates in the diploid larvae from the control groups did not exceed 7.0% while percentage of malformed triploid individuals equaled 19.1%. Drastically increased number of deformed larvae (> 30%) was observed in both DH and meiogynogenetic individuals. Intensification of kyphosis and scoliosis was clearly demonstrated in the gynogenetic and triploid brook trout. Genetic factors such as increased number of sets of chromosomes in triploids and expression of lethal alleles in the gynogenetic fish plus side effects of HHP shock utilized for retention of the second polar body or inhibition of the first cell cleavage when induced triploid and gynogenetic development have been discussed to affect survival rates and prevalence for the skeletal deformities in the chromosome set manipulated brook trout.

DOI: https://doi.org/10.2478/aoas-2020-0051 | Journal eISSN: 2300-8733 | Journal ISSN: 1642-3402
Language: English
Page range: 141 - 157
Submitted on: Nov 27, 2019
Accepted on: May 14, 2020
Published on: Jan 29, 2021
Published by: National Research Institute of Animal Production
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2021 Krzysztof Jagiełło, Marcin Polonis, Ligia Panasiak, Stefan Dobosz, Konrad Ocalewicz, published by National Research Institute of Animal Production
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.