Do Cardinal Directions Affect the Diversity of Bdelloid Rotifers ?
نویسندگان
چکیده
In this study, we investigated whether cardinal directions affect the distribution of bdelloid rotifers or not, in order to contribute to the studies will be carried out determining the distribution patterns of microorganisms. Thus, we examined species composition and abundance of bdelloid rotifers living on 10 cm of lichen samples which was collected from the east and north sides and from top of a wall covered with Tortula ruralis (moss). The North side of the wall had the highest abundance. The results showed that species composition and abundance of bdelloid rotifers are affected by different cardinal directions and bdelloid rotifers may have an habitat preferency.
منابع مشابه
Sexual Species Are Separated by Larger Genetic Gaps than Asexual Species in Rotifers
Why organisms diversify into discrete species instead of showing a continuum of genotypic and phenotypic forms is an important yet rarely studied question in speciation biology. Does species discreteness come from adaptation to fill discrete niches or from interspecific gaps generated by reproductive isolation? We investigate the importance of reproductive isolation by comparing genetic discret...
متن کاملPhylogenomics of Unusual Histone H2A Variants in Bdelloid Rotifers
Rotifers of Class Bdelloidea are remarkable in having evolved for millions of years, apparently without males and meiosis. In addition, they are unusually resistant to desiccation and ionizing radiation and are able to repair hundreds of radiation-induced DNA double-strand breaks per genome with little effect on viability or reproduction. Because specific histone H2A variants are involved in DS...
متن کاملTrehalose in desiccated rotifers: a comparison between a bdelloid and a monogonont species.
In response to drought bdelloid and monogonont rotifers undergo anhydrobiosis and are assumed to synthesize protective chemicals, which are commonly sugars. In contrast to most anhydrobionts, bdelloids have earlier been shown to lack trehalose as protective chemical, and more importantly to lack trehalose synthase (tps) genes. It remains to be assessed if the absence of trehalose is a character...
متن کاملExtreme anti-oxidant protection against ionizing radiation in bdelloid rotifers.
Bdelloid rotifers, a class of freshwater invertebrates, are extraordinarily resistant to ionizing radiation (IR). Their radioresistance is not caused by reduced susceptibility to DNA double-strand breakage for IR makes double-strand breaks (DSBs) in bdelloids with essentially the same efficiency as in other species, regardless of radiosensitivity. Instead, we find that the bdelloid Adineta vaga...
متن کاملMassive horizontal gene transfer in bdelloid rotifers.
Horizontal gene transfer in metazoans has been documented in only a few species and is usually associated with endosymbiosis or parasitism. By contrast, in bdelloid rotifers we found many genes that appear to have originated in bacteria, fungi, and plants, concentrated in telomeric regions along with diverse mobile genetic elements. Bdelloid proximal gene-rich regions, however, appeared to lack...
متن کامل