A poorly known African species Xanthopygoides niger (Cameron, 1951), hitherto a member of a monotypic genus of the subtribe Xanthopygina, is transferred to the subgenus Raucalius Tottenham, 1949 of the genus Philonthus Stephens, 1829, subtribe Philonthina, and redescribed. Th e new genus-group synonymy, Raucalius Tottenham, 1951 = Xanthopygoides Verdcourt, 1952, is established. A new combinatio...

Thermal death rate data were obtained for spores of Clostridium sporogenes P.A. 3679 and Bacillus subtilis var. niger, and for cells of Salmonella senftenberg 775W. The survival curves for P.A. 3679 were approximately linear, but for B. subtilis var. niger or S. senftenberg 775W they were sigmoidal. Decimal reduction times were derived from the regression slopes of the apparent linear portion o...

If the primary goal of artificial reef construction is the creation of additional reef habitat that is comparable to adjacent natural rocky-reef, then performance should be evaluated using simultaneous comparisons with adjacent natural habitats. Using baited remote underwater video (BRUV) fish assemblages on purpose-built estuarine artificial reefs and adjacent natural rocky-reef and sand-flat ...

The ubiquitous trade-off between survival and costly reproduction is one of the most fundamental constraints governing life-history evolution. In numerous animals, gonadotropic hormones antagonistically suppressing immunocompetence cause this trade-off. The queens of many social insects defy the reproduction-survival trade-off, achieving both an extraordinarily long life and high reproductive o...

This work aims at optimizing the high cell density fungal cultivation for producing large quantities of fungal biomass to be used in azo dye residues bioremediation. In our previous studies the efficacy of using certain fungal strains to decolorize a range of commercial textile dyes of different structures (azo, disazo) were investigated. Several promising fungal strains belonging to Aspergillu...

Since program approval, Niger has been facing a more challenging international context, including the fall-out from war in Ukraine, which is exacerbating pressures on food and fertilizer prices. Moreover, unfavorable rainfall deterioration security situation led to deceleration of growth 1.3 percent 2021 an acute crisis. A temporary deviation fiscal deficit targets 2022-23 needed respond urgent...

In an effort to develop alternate techniques to recover metals from waste electrical and electronic equipment (WEEE), this research evaluated the bioleaching efficiency of gold (Au), copper (Cu) and nickel (Ni) by two strains of Aspergillus niger in the presence of gold-plated finger integrated circuits found in computer motherboards (GFICMs) and cellular phone printed circuit boards (PCBs). Th...

Developing countries have a high prevalence of diabetes and their populations are suffering from associated adverse factors. Such a frequency requires more effective diagnosis, mostly achieved by glucose diagnostic kits. Although high priced kits are available in market but local production of such kits can be highly cost effective and may confer the decline in incidence of the disease. Glucose...

We observed that mouse spleen cells from rosettes with autologous red blood cells (RBCs) and that rosette-formation was suppressed by anti-Aspergillus niger glucose oxidase monoclonal antibody (mAb). In the present study, we investigated whether RBCs of species besides mice have the structure recognized by anti-A. niger glucose oxidase mAb by using rosette-formation and complement-mediated hemo...

The presence of a mannitol cycle in fungi has been subject to discussion for many years. Recent studies have found no evidence for the presence of this cycle and its putative role in regenerating NADPH. However, all enzymes of the cycle could be measured in cultures of Aspergillus niger. In this study we have analyzed the localization of two enzymes from the pathway, mannitol dehydrogenase and ...