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12. Influence of parental life history on maturation and smoltification in brown trout (Salmo trutta L.)

Author

Dȩbowski Piotr and Dobosz Stefan

Subjects
salmonids, developmental path, inheritance, anadromy, Aquaculture. Fisheries. Angling, SH1-691
Abstract

The developmental pathways of the offspring of three groups of trout, Salmo trutta L., with known life histories were compared: one group from a freshwater resident population and two groups from an anadromous population (fish that have smoltified and fish that have not). The fish were hybridized within a group, and 27 families were obtained and reared mixed in two tanks. Tracking fish specimens was possible thanks to individual passive integrated transponder (PIT) tagging. All families followed different life pathways. Faster growth favored early smoltification and maturation at the age of 1+ in males that had not smoltified. In addition, both processes were clearly also influenced by inherited factors. Fish of freshwater resident origin smoltified more infrequently, and males matured earlier than did fish from the migratory population. The offspring of parents from the migratory population, which did smoltify during their individual histories, smoltified early (in the second year) more often than offspring of non-smoltified members of the population.

Published
2016
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24. Feed-borne exposure to zearalenone impairs reproduction of rainbow trout

Author

Woźny, Maciej, primary, Dobosz, Stefan, additional, Hliwa, Piotr, additional, Gomułka, Piotr, additional, Król, Jarosław, additional, Obremski, Kazimierz, additional, Blahova, Jana, additional, Svobodova, Zdenka, additional, Michalik, Oliwia, additional, Ocalewicz, Konrad, additional, and Brzuzan, Paweł, additional

Published
2020
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31. The effect of dietary immunostimulants on digestive tract physiology and morphology of river trout (Salmo trutta m. fario)

Author

Ostaszewska, Teresa, primary, Kamaszewski, Maciej, additional, Szudrowicz, Hubert, additional, Kasprzak, Robert, additional, Zakęś, Zdzisław, additional, Rożyński, Maciej, additional, Krejszeff, Sławomir, additional, Dobosz, Stefan, additional, Rożyński, Romuald, additional, Formicki, Krzysztof, additional, Korzelecka-Orkisz, Agata, additional, Tański, Adam, additional, Gomułka, Piotr, additional, Demska-Zakęś, Krystyna, additional, and Ziomek, Elżbieta, additional

Published
2019
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48. Genome incompatibility between rainbow trout (<italic>Oncorhynchus mykiss</italic>) and sea trout (<italic>Salmo trutta</italic>) and induction of the interspecies gynogenesis.

Author

Polonis, Marcin, Fujimoto, Takafumi, Dobosz, Stefan, Zalewski, Tomasz, and Ocalewicz, Konrad

Abstract

Rainbow trout (Oncorhynchus mykiss Walbaum) and sea trout (Salmo trutta Linnaeus, 1758) show large karyotypic differences and their hybrid offspring is not viable due to unstable karyotype and chromosome fragmentation. However, gametes from these two species were used to induce gynogenetic development. Rainbow trout eggs activated by UV-irradiated sea trout sperm were subjected to high hydrostatic pressure (HHP) shock to prevent release of the 2nd polar body (early shock) or to inhibit the first cleavage (late shock) in order to produce diploid meiotic gynogenotes and gynogenetic doubled haploids (DHs), respectively. Cytogenetic analysis proved fish that development was induced by the sea trout spermatozoa were rainbow trout. In turn, molecular examination confirmed homozygosity of the gynogenetic DHs. Presumed appearance of the recessive alleles resulted in lower survival of the gynogenetic DH larvae (~25%) when compared to survival of the heterozygous (meiotic) gynogenotes (c. 50%). Our results proved that genomic incompatibilities between studied trout species result in the hybrid unviability. However, artificial gynogenesis including activation of rainbow trout eggs with UV-irradiated sea trout spermatozoa was successfully induced. As both species are unable to cross, application of the UV-irradiated sea trout spermatozoa to activate rainbow trout development assures only maternal inheritance with no contamination by the residues of the paternal chromosomes. [ABSTRACT FROM AUTHOR]

Published
2018
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49. The effect of GonazonTM (GnRH analog) on LH and 17α20β-DHP secretion and sperm parameters in rainbow trout

Author

Mikolajczyk, Tomasz, Chyb, Jaroslaw, Kuzminski, Henryk, Le Gac, Florence, Dobosz, Stefan, Ciereszko, Andrzej, Dietrich, Grzegorz, Sambroni, Elisabeth, Goupil, Anne-Sophie, ProdInra, Migration, Foundation Salmonidae, Partenaires INRAE, University of Agriculture, Inland Fisheries Institute, Laboratoire de Physiologie et Génomique des Poissons (LPGP), Institut National de la Recherche Agronomique (INRA)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Institute of Animal Reproduction and Food Research, and Institute of Animal Reproduction and Food Research PAS

Subjects
[SDV.BDLR]Life Sciences [q-bio]/Reproductive Biology, ComputingMilieux_MISCELLANEOUS, [SDV.BDLR] Life Sciences [q-bio]/Reproductive Biology
Abstract

International audience

Published
2012

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