Tissue Distributions and Toxic Effects of Hexavalent Chromium in Laboratory-Exposed Periwinkle ( Linnaeus).

The increased use of hexavalent chromium (Cr) in various industrial applications has contributed to its elevated levels in the environment, especially the aquatic environment. Thus, there is the potential for accumulation of Cr in the tissues of aquatic organisms and consequent toxic effects. The toxic effects of Cr in aquatic organisms have been widely reported; however, little is known about the patterns of tissue accumulation of Cr and its toxicity in aquatic mollusks.

Susceptibility of processed and stored cassava, plantain, yam, and cocoyam to coffee bean weevil ( De Geer).

Background: Coffee bean weevil ( DeGeer) (Coleoptera: Anthribidae) infestation is a major challenge affecting processed, dried, and stored foods globally. However, the growth performance of this insect pest in processed and stored cassava, plantain, yam, and cocoyam is poorly understood. Resolving this will guide future biotechnological efforts on these food products.