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.
The eggs are so small, though, that a single raft of 200 to 300 eggs is only 1/4 inch long. Mosquitoes usually lay the eggs at night and the rafts are so inconspicuous, you may never notice them. Culex mosquito egg raft.hen the eggs hatch about a day later, the larvae wriggle free from the bottom of the eggs, swimming directly down into the water. They look like strange alien creatures, as you can see in the video. To lay the eggs, the mosquito first lands on the surface of the water and takes a drink.