Fertility of triploid hybrids of Prussian carp (Carassius gibelio) with common carp (Cyprinus carpio L.)

Fertility of backcross triploid hybrids containing one genome of Prussian carp and two genomes of common carp is investigated. The females of hybrids of Prussian carp and common carp (Prussian × common carp) are prolific and produce diploid gametes. Since males of such hybrids are sterile, their rep...

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Bibliographic Details
Published in:Russian journal of developmental biology 2017-09, Vol.48 (5), p.347-353
Main Authors: Balashov, D. A., Recoubratsky, A. V., Duma, L. N., Ivanekha, E. V., Duma, V. V.
Format: Article
Language:English
Subjects:
Animal Anatomy
Biomedical and Life Sciences
Carp
Developmental Biology
Females
Fertility
Gametes
Genomes
Histology
Hybrids
Life Sciences
Morphology
Offspring
Ontogenesis and Evolution
Speciation
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Summary:Fertility of backcross triploid hybrids containing one genome of Prussian carp and two genomes of common carp is investigated. The females of hybrids of Prussian carp and common carp (Prussian × common carp) are prolific and produce diploid gametes. Since males of such hybrids are sterile, their reproduction is realized by means of induced gynogenesis. Triploid progeny is obtained by backcrossing female Prussian × common carp with carp males. Among triploids obtained from hybrids F 1 and among hybrids of the first gynogenetic generation, there were no prolific specimens. However, in reproduction of diploid hybrids by means of gynogenesis during six generations, the female fertility in the backcross progeny is restored. From backcross triploid females (daughters of Prussian × common carp of the sixth gynogenetic generation), a viable triploid gynogenetic progeny and a tetraploid backcross (by carp) progeny are obtained. The obtained data may be considered as the experimental proof of the hypothesis of reticular speciation.
ISSN:1062-3604
1608-3326
DOI:10.1134/S1062360417050034