TITLE:
Chromosomal Studies of the Hybrid between Female Rhodeus ocellatus ocellatus and Male Rhodeus atremius fangi in Bitterlings (Teleostei: Cypriniformes: Acheilognathinae)
AUTHORS:
Takayoshi Ueda, Yukie Ueda
KEYWORDS:
Bitterling, Hybrid, Chromosome, Species Differentiation, Karyotype Evolu-tion, Environmental Preservation
JOURNAL NAME:
Natural Resources,
Vol.9 No.1,
January
26,
2018
ABSTRACT: The chromosome analysis of the masculinized hybrid
between female Rhodeus ocellatus
ocellatus and male R. atremius fangi in bitterlings (Acheilognathinae) was done. It was presumed that they had
intermediate karyotype between the parents, and formed sperms with heteroploidy
resulting from the incomplete pairing of homologous chromosomes in meiosis. Due
to the abundance of species and the ease of artificial fertilization, the study
of the factor of the hybrid sterility in bitterlings would lead to the
clarification of the mechanism about species differentiation and karyotype
differentiation, and also develop a new variety. And also, it would also be
important to make the hybrid various natures clear in environmental preservation.