Dictionary > Diphyllobothrium latum

Diphyllobothrium latum

Definition
noun
Fish tapeworm that infests the intestine of its mamalian (including human) host
Supplement
Diphyllobothrium latum belongs to the genus Diphyllobothrium, which in turn belongs to the class Cestoda (tapeworm). D. latum causes diphyllobothriasis in its human host. Infection in humans is usually by eating uncooked fish. The larval stage is known as sparganum. It occurs in Scandinavia, western Russia, and the Baltics. It is regarded as the longest human tapeworm, reaching about ten to twelve meters long. As a tapeworm, the adult D. latum has three major body parts: the head or scolex, the neck, and the proglottids. The scolex lacks hooks and has slit-like grooves called bothria that run longitudinally. The worm uses bothria to attach to the wall of the intestine. The neck serves as the proliferative region that gives rise to new proglottids. The proglottids contain the reproductive organs (and therefore involved in sexual reproduction). The species is hermaphrodite, which means it carries both sets of sex organs and therefore is capable of self-fertilization.
D. latum is whitish or yellowish in color and is dorso-ventrally flattened. The adult worm in the gut feed through the skin (tegument). They absorb nutrients from food digested in the intestine. They lack oral opening.
Scientific classification:

  • Kingdom: Animalia
  • Phylum: Platyhelminthes
  • Class: Cestoda
  • Subclass: Eucestoda
  • Order: Pseudophyllidea
  • Family: Diphyllobothriidae
  • Genus: Diphyllobothrium
  • Species: D. latum

Common names:

  • broad tapeworm
  • fish tapeworm
  • broad fish tapeworm
  • See also:


    You will also like...

    squirrel
    Animal Water Regulation

    Animals adapt to their environment in aspects of anatomy, physiology, and behavior. This tutorial will help you understa..

    Plant Water Regulation
    Plant Water Regulation

    Plants need to regulate water in order to stay upright and structurally stable. Find out the different evolutionary adap..

    Water Cycle
    The Water Cycle

    The water cycle (also referred to as the hydrological cycle) is a system of continuous transfer of water from the air, s..

    Adaptation Tutorial
    Adaptation Tutorial

    Adaptation, in biology and ecology, refers to the process or trait through which organisms or the populations in a habit..

    Plant biology
    Plant Biology

    Plantlife can be studied at a variety of levels, from the molecular, genetic and biochemical level through organelles, c..

    Early Earth
    The Origins of Life

    This tutorial digs into the past to investigate the origins of life. The section is split into geological periods in the..

    Related Articles...

    No related articles found

    See all Related Topics