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Polyspermy produces viable haploid/diploid mosaics in sturgeon

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F18%3A43897853" target="_blank" >RIV/60076658:12520/18:43897853 - isvavai.cz</a>

  • Result on the web

    <a href="https://academic.oup.com/biolreprod/article/99/4/695/4985831" target="_blank" >https://academic.oup.com/biolreprod/article/99/4/695/4985831</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1093/biolre/ioy092" target="_blank" >10.1093/biolre/ioy092</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Polyspermy produces viable haploid/diploid mosaics in sturgeon

  • Original language description

    Most of sturgeon species (Acipenseridae) are currently critically endangered. Attempts to revive these populations include artificial breeding in hatcheries. However, under artificial reproduction, sturgeon embryos occasionally develop atypically, showing 3, 5, 6, 7, 9, or 10 cells at the 2-to 4-cell stage. This study was undertaken with the objective of understanding the mechanism of the atypical division (AD) in embryos during artificial breeding. Using several sturgeon species, we tested two hypotheses: (1) polyspermy and (2) retention of the second polar body. We found that (1) AD embryos survive similar to controls, (2) the ratio of AD embryos is positively correlated with the amount of sperm used for fertilization, (3) the number of micropyles and the area covered by them in AD embryos is significantly greater when compared to controls, (4) numerous spermatozoa nuclei are in the cytoplasm after fertilization, (5) all AD embryos are mosaics, and (6) AD fishes with n/2n ploidy contain diploid cells from maternal and paternal genetic markers, while the haploid cells contained only paternal ones. These results clearly indicate that AD embryos arise from plasmogamy where the accessory spermatozoon/spermatozoa entry the egg and develop jointly with zygotic cells. This suggests that a well-controlled fertilization procedure is needed to prevent the production of sturgeon with irregular ploidy, which can have detrimental genetic effects on sturgeon populations. On the other hand, if AD fish can produce haploid-derived clonal gametes, induction of multiple-sperm mosaicism might be a useful tool for the rapid production of isogenic strains of sturgeons. Summary Sentence We believe that findings of this study can help to avoid negative effect on sturgeon propagation programs and might be useful for breeding and genomic research.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    40103 - Fishery

Result continuities

  • Project

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Others

  • Publication year

    2018

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Biology of Reproduction

  • ISSN

    0006-3363

  • e-ISSN

  • Volume of the periodical

    99

  • Issue of the periodical within the volume

    4

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    12

  • Pages from-to

    695-706

  • UT code for WoS article

    000455164700006

  • EID of the result in the Scopus database

    2-s2.0-85053685357