Lower back tightness can cause muscle twitching, pain and reduced range of motion. Photo Credit Dirima/iStock/Getty Images. Lower back muscle tightness is the cause of a muscle spasm. This can be brought on by a strain, overuse or muscle weakness, according to BetterMedicine.com. If your lower back muscles lack strength, and a stronger back muscle pulls on this weak muscle, it can create tightness or pain. While lower back tightness can be managed at home, occasionally medical intervention is needed to treat this common condition. Rest your lower back muscles.
Wasp and Scale Insects Help Control Giant Reed. An arundo gall wasp deposits eggs into the main stem of a giant reed. (Image by USDA/ARS) The release of tiny insects to combat the invasive weed giant reed is paying off, according to a recent U.S. Department of Agriculture (USDA) study.
Galls serve several important purposes for the gallmaker. The developing insect or mite resides within the gall, where it is sheltered from the weather and from predators. The young insect or mite also feeds on the gall. Eventually, the mature insect or mite emerges from the gall. After the gallmaking insect or mite leaves, the gall remains behind on the host plant. Other insects, such as beetles or caterpillars, may move into the gall for shelter or to feed.