The term glomerulonephritis (GN) covers a group of conditions in which there is injury in the glomerulus, the filtering unit of the kidney. This can occur either as a primary glomerular disease, or secondary to drugs, infections or tumours (see Secondary Glomerular Disease, pp 464â466 of this issue).
As insects are spiders' main prey, it is likely that they would impose strong selectional forces on the foraging behavior of spiders. Most commonly found in the sheet-web spider families, some webs will have loose, irregular tangles of silk above them.
Wolf spiders prey upon many insects such as crickets and ants and have been seen catching other spiders as well. They are even known to stalk and catch small lizards, frogs, mice and tiny birds. Wolf spiders stalk their prey much like wolves do in the wild, which is how they got their name. They don't weave webs like other spiders, but locate potential prey with their keen eyesight. They then attack and overpower their prey with superior strength and speed. However, the wolf spider can't actually eat meat if it happens to catch a small mouse. Rather, it drinks the liquid out of its prey with a sucking motion that resembles using a straw.