There are currently 19 species discovered with A. vaga having five subspecies:
Genome The
genome of Adineta vaga is
tetraploid. It is comprises mainly of anciently
duplicated segments and less divergent allelic regions. It’s allelic regions are rearranged and sometimes even found on the same chromosome which is in contrast to sexual species of this genus.
Meiosis Until recently, it was considered that the reproductive mode of
bdelloid rotifers is mitotic
parthenogenesis. However, recent research with
Adineta vaga now supports a
meiotic derived
oogenesis with an altered
meiosis I stage. During this stage
homologous chromosomes associate, likely undergo recombinational repair of DNA damage and then separate, but do not segregate into haploid nuclei. ==References==