Genotypic Males Play an Important Role in the Creation of Genetic Diversity in Gynogenetic Gibel Carp.

ABSTRACT: Unisexual lineages are commonly considered to be short-lived in the evolutionary process as accumulation of deleterious mutations stated by Muller's ratchet. However, the gynogenetic hexaploid gibel carp (Carassius gibelio) with existence over 0.5 million years has wider ecological distribution and higher genetic diversity than its sexual progenitors, which provides an ideal model to investigate the underlying mechanisms on countering Muller's ratchet in unisexual taxa. Unlike other unisexual lineages, the wild populations of gibel carp contain rare and variable proportions of males (1-26%), which are determined via two strategies including genotypic sex determination and temperature-dependent sex determination. Here, we used a maternal gibel carp from strain F to be mated with a ge

SUBMITTER: Zhao X 

PROVIDER: S-EPMC8194356 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature