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.
Like all cynipids, they make galls on plants and are specific with regard to host species and tissue. Four plant genera, all asteraceous, are used by the wasps, of which Chrysothamnus, Lygodemnia, and Microseris are known to host one Antistrophus species each whereas Silphium host the remaining seven species.ike all cynipids, they make galls on plants and are specific with regard to host species and tissue. Four plant genera, all asteraceous, are used by the wasps, of which Chrysothamnus, Lygodemnia, and Microseris are known to host one Antistrophus species each whereas Silphium host the remaining seven species.