The 5S RNA genes of Drosophila melanogaster in either an isogenic wildtype or a multiply inverted (SM1) chromosome 2 increase their multiplicity when opposite a deficiency for the 5S gene site. This is analogous to the compensation phenomenon previously described for the 18S and 28S ribosomal RNA genes of the X chromosome nucleolus organizer region. Molecular hybridization of 5S RNA to DNA cont...

Paratylenchus shenzhenensis n. sp. was collected from the rhizosphere soil of Anthurium andraeanum in Shenzhen, Guangdong Province, China. The new species is characterized by having a female with a small body (249-302 μm), well developed stylet (17-21 μm), rounded head with four submedian lobes and lip-region with a slight depression at the oral area, small post-vulval uterine sac with a few ve...

Identification of species members of the Hyrcanus Group of Anopheles is difficult because of intraspecific variation in and interspecific similarity among key characters. Hibernating female Anopheles pullus were collected and 6 adults were individually reared. All F1 progeny of wild-caught An. pullus were morphologically identical to An. yatsushiroensis. The 5.8S rDNA-ITS2-28S rDNA region from ...

Mytella strigata (Hanley, 1843) is an invasive mussel species that has rapidly spread in China recent years. Here, we tested the utility of three mitochondrial gene fragments, COI, 12S, and 16S, two nuclear D1 28S 18S-ITS1, for characterizing levels genetic diversity among within populations using 191 M. specimens collected to aid ongoing efforts identify origin invasion as well molecular studi...

Black meristematic fungi are cosmopolitan and able to adapt to extreme fluctuations of ultraviolet radiation, temperature, and moisture and grow in exposed habitats such as stone surfaces. In a survey on fungi associated with fruit rots, leaf spots, canker, gummosis, dieback and trunk diseases of grapevine and walnut trees in Kurdistan Province (Iran), some black meristematic fungal isolates re...

Sponges (Porifera, Spongillida) make up the bulk of benthic biomass in Lake Baikal and are represented by family Lubomirskiidae, a collection endemic species, several species cosmopolitan Spongillidae. We conducted an analysis D3 domain 28S rDNA 16 freshwater sponge species. Based on molecular data, we were able to identify all collected Spongillidae specimens whose identification was difficult...