2017
DOI: 10.1155/2017/2975187
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High Rate of Deformed Larvae among Gynogenetic Brown Trout (Salmo trutta m. fario) Doubled Haploids

Abstract: Mitotic gynogenesis results in the production of fully homozygous individuals in a single generation. Since inbred fish were found to exhibit an increased frequency of body deformations that may affect their survival, the main focus of this research was to evaluate the ratio of individuals with spinal deformities among gynogenetic doubled haploids (DHs) brown trout as compared to nonmanipulated heterozygous individuals. Gynogenetic development was induced by the activation of brown trout eggs by UV-irradiated … Show more

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Cited by 17 publications
(13 citation statements)
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“…Both types of malformations were observed in the rainbow trout developing in the post‐ovulatory ageing eggs (Aegerter et al, ; Bonnet et al, ). Lordosis and scoliosis that are considered as rather genetically determined deformities (Boglione et al., ; Jagiełło, Zalewski, Dobosz, Michalik, & Ocalewicz, ) more likely resulted from the recessive alleles rather than reduced developmental competence of the irradiated eggs.…”
Section: Discussionmentioning
confidence: 99%
“…Both types of malformations were observed in the rainbow trout developing in the post‐ovulatory ageing eggs (Aegerter et al, ; Bonnet et al, ). Lordosis and scoliosis that are considered as rather genetically determined deformities (Boglione et al., ; Jagiełło, Zalewski, Dobosz, Michalik, & Ocalewicz, ) more likely resulted from the recessive alleles rather than reduced developmental competence of the irradiated eggs.…”
Section: Discussionmentioning
confidence: 99%
“…Malnutrition by itself results in the body deformities due to the low intake of proteins, minerals and vitamins (Madsen & Dalsgaard, 1999). Increased homozygosity is usually followed by increased ratio of larvae with the vertebral deformities (Boglione et al, 2013;Jagiełło, Zalewski, Dobosz, Michalik, & Ocalewicz, 2017). Thus, it is reasonable to assume that clonal rainbow trout were more susceptible to developing scoliosis, lordosis or kyphosis.…”
Section: Discussionmentioning
confidence: 99%
“…Several techniques of chromosome manipulation have been used, such as physical shock (temperature and hydrostatic pressure), chemical treatment and UV/gamma‐ray treatment. These treatments resulted in polyploidy (triploids/tetraploids), gynogenetic or androgenetic fish populations (Johnstone & Stet, 1995; Felip et al, 2001; Jagiełło et al, 2017). The first attempts to induce polyploidy in farmed rohu used chemical treatment such as colchicine (Reddy et al, 1990).…”
Section: Genetic Approachesmentioning
confidence: 99%