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

• Published in: Russian journal of developmental biology Vol. 48; no. 5; pp. 347 - 353
• Main Authors: Balashov, D. A., Recoubratsky, A. V., Duma, L. N., Ivanekha, E. V., Duma, V. V.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.09.2017; Springer Nature B.V
• Subjects: Animal Anatomy; Biomedical and Life Sciences; Carp; Developmental Biology; Females; Fertility; Gametes; Genomes; Histology; Hybrids; Life Sciences; Morphology; Offspring; Ontogenesis and Evolution; Speciation; tetraploids; Prussian carp; polyploid evolution; common carp; fertility; hybrids; triploids
• ISSN: 1062-3604; 1608-3326
• DOI: 10.1134/S1062360417050034

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.