Recent studies on the ovary organization and oogenesis in Tubificinae have revealed that their ovaries are small polarized structures that are composed of germ cells in subsequent stages of oogenesis that are associated with somatic cells. In syncytial cysts, as a rule, each germ cell is connected to the central cytoplasmic mass, the cytophore, via only one stable intercellular bridge (ring can...

Tubifex tubifex metabolizes 2,4,6-trinitrotoluene (TNT) to 2-amino-4,6-dinitrotoluene (2ADNT) and 4-amino-2,6-dinitrotoluene (4ADNT). Elimination rates of metabolically-generated ADNTs are low compared to ADNTs absorbed directly from water, suggesting that metabolically-generated ADNTs may be bound or sequestered within tissue and therefore less available for elimination. A solid phase microext...

The present study was conducted to assess the effects of different feed regimes for nursing knife fish (Notopterus notopterus) larvae up 35 days. Larvae were reared in 50 L tank with Moina, Tubifex worm, and commercial powder substituted culture Feeding worms during found best growth rate survival fish. result obtained when fed 0-5 days 6-20 tubifex 21–35-day weight gain 0.31 g, length 2.36 cm,...

One of the types pollution aquatic and terrestrial ecosystems is by surface-active substances (surfactants).With awareness potential danger conventional surfactants on environment human health, there a growing interest in development bio-based personal hygiene products. These are considered safer, abundant, biodegradable, biocompatible. The study shampoos consisting only natural organic compone...

Nucleolar ribonucleoprotein (RNP) components of the chloragogen cells of normal untreated specimens of Tubifex tubifex (Mull.) were found to be segregated, there being separate zones for each RNP species. There were external and internal zones, containing granular RNP, and a fibrillar zone located between them in which only filamentous RNP components were'found. The innermost part of the nucleo...

A previously undescribed echinactinomyxon type actinosporean was shown experimentally to be the alternate stage of Sphaerospora truttae. The echinactinomyxon type spores were found to be released from Lumbriculus variegatus and occasionally Tubifex tubifex. Overall infection prevalence of the echinactinomyxon was 0.14%. Peak release was in March-May each year. S. truttae spores developed in exp...