Human introductions can obscure the diversity and distribution of native biota; hybridization with and replacement by introduced congeners is a primary conservation threat, particularly in salmonids. Cutthroat trout (Oncorhynchus clarkii) are an important component of biodiversity in the American...

The delimitation of dispersal routes used by individuals moving between populations has the potential to direct management efforts aimed at limiting the spread of invasive species. Red swamp crayfish (Procambarus clarkii) have successfully invaded aquatic ecosystems across much of the globe,...

The antimalarial properties of T. diversifolia, an Asteraceae traditionally used to treat malaria, were investigated in vitro against three strains of Plasmodium falciparum. The ether extract from aerial parts of the plant collected in São Tomé and Príncipe, demonstrated good antiplasmodial...

The size structure of virtually the entire metazoan community in a fourth order, sandy-bottomed Piedmont stream (in Virginia, USA) during late summer was characterized. The study, the first to sample across all habitat types and sizes of metazoans in an aquatic ecosystem, indicates that at the...