background: aquatic ecosystems are frequently subjected to contamination by toxic heavy metals and pesticides, yet very little is known about the influence of pesticides on bioaccumulation of heavy metals in aquatic organisms. mercury is a toxic metal with no known biological benefit to organisms. bioavailability of mercury in aquatic environments depends on biological and non-biological parame...

Desmarestia japonica (Phaeophyceae, Desmarestiales) was recently established from the Japanese ligulate Desmarestia and is morphologically similar to D. ligulata. This species has been reported only from Japan. However, the taxonomic reports based on additional regional distributions are needed to clarify this taxonomic entity and its species boundaries. Because Desmarestia species have restric...

Even the simplest known biological organisms have thousands of genes and millions of DNA base pairs. This makes it necessary to study the distribution and dynamics of genetic variation at many loci (or genetic markers) simultaneously. A particular combination of genes (or genetic markers) for a DNA segment under consideration is referred to as haplotype. In what follows different haplotypes wil...

Simple sequence repeats are predominantly found in most organisms. They play a major role in studies of genetic diversity, and are useful as diagnostic markers for many diseases. The simple sequence repeats database (SSRD) for the human genome was created for easy access to such repeats, for analysis, and to be used to understand their biological significance. The data includes the abundance an...

Abstract The oyster culture has the incrusting organism as problem for production, in this context, it evaluated biological control against and sediments introduction of gastropod Tegula atra (Lesson, 1830) Chilean oysters (Triostrea chilensis Phillippi, 1844) cultures conditions starvation presence absence located floating cages bottom cultures. predation mechanic effect on T. grazing generate...