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The life cycle of the body louse consists of three stages: egg, nymph, and adult. Eggs (also called nits, see head louse nits ) are attached to the clothes or hairs by the female louse, using a secretion of the accessory glands that holds the egg in place until it hatches, while the nits (empty egg shells) may remain for months on the clothing.
Pediculus humanus is divided into two subspecies, Pediculus humanus humanus, or the human body louse, sometimes nicknamed "the seam squirrel" for its habit of laying of eggs in the seams of clothing, and Pediculus humanus capitis, or the human head louse. Pthirus pubis (the human pubic louse) is the cause of the condition known as crabs.
Pediculus humanus is a species of louse that infects humans. It comprises two subspecies: [1] [2] Pediculus humanus humanus Linnaeus, 1758 – body louse; Pediculus humanus capitis De Geer, 1767 – head louse
Pediculosis corporis or Vagabond's disease is a cutaneous condition caused by body lice (Pediculus humanus humanus) that lay their eggs on clothing and to a lesser extent on human hairs. [ 1 ] [ 2 ] : 447
Humans host two species of louse—the head louse and the body louse are subspecies of Pediculus humanus; and the pubic louse, Pthirus pubis. The body louse has the smallest genome of any known insect; it has been used as a model organism and has been the subject of much research. Lice were ubiquitous in human society until at least the Middle ...
A new study suggests human life expectancy is plateauing. In 2022, life expectancy in the US was 77.5 years, but values vary across states. Hawaii has the longest life expectancy, while ...
After falling 2.4 years between 2019 and 2021, life expectancy rose by more than a year in 2022, and new data from the US Centers for Disease Control and Prevention shows that it increased by ...
Unlike other bilateral animals, the 37 mitochondrial genes of human lice are not on a single circular chromosome but extensively fragmented. For the head louse, and the body louse, they are on 20 minichromosomes, for the pubic louse 14 minichromosomes and the chimpanzee louse,18 minichromosomes. [37]