Q:

How do millipedes reproduce?

A:

Most millipedes reproduce sexually via internal fertilization. The precise method differs between species and may or may not involve courtship behavior or the use of pheromones.

In millipedes, egg and sperm cells originate in gonopores in the animals' third body segments. Male millipedes have a secondary sexual organ, the gonopod, on the seventh body segment and must transfer sperm from the gonopores to the gonopod prior to copulation.

Male bristly millipedes construct a sort of web on which to deposit sperm. The female picks up the sperm and fertilizes herself. In species with courtship behavior, the male walks on the back of the female to stimulate interest. If the female is receptive, she raises her head region, allowing the male to entwine himself around her. The male deposits sperm into the female reproductive structure via a small packet, or spermatophore. In species that utilize pheromones, the chemicals are likely only effective for short-distance communication. The female lays her eggs in dirt or leaves and, in some species, guards them until they hatch.

Two species of bristly millipede are capable of parthenogenic reproduction. Males are rare or absent in those species, and reproduction is asexual, resulting in young that are essentially clones of the mother.


Is this answer helpful?

Similar Questions

  • Q:

    How do butterflies reproduce?

    A:

    Butterflies mate through sexual reproduction, and mating begins when the male butterfly detects a female butterfly releasing pheromones at close range. If the female accepts the male, the male attaches to the female's abdomen, injecting a sperm packet into her stomach that she stores until she decides to lay eggs.

    Full Answer >
    Filed Under:
  • Q:

    How do penguins reproduce?

    A:

    Penguins reproduce as most birds do, with internal fertilization that is accomplished by putting each penguin's cloacas together. The male sprays sperm into the female's cloaca where it can then travel inside and fertilize eggs.

    Full Answer >
    Filed Under:
  • Q:

    How do alligators reproduce?

    A:

    Alligators reproduce via internal fertilization, mating at night and eventually laying 35 to 50 eggs in a small pit, which is then covered with a nest of decaying vegetation. About five times as many females are hatched as males after an incubation of 65 days, with the sex of offspring determined by temperature rather than genetic differences. The mother guards the eggs and digs them up as they begin hatching.

    Full Answer >
    Filed Under:
  • Q:

    How do Japanese spider crabs reproduce?

    A:

    Japanese spider crabs, also known by their scientific name Macrocheira kaempferi, reproduce by internal fertilization. Once a year, during the mating season between January and March, male crabs insert sperm into abdomens of female crabs with the foremost pair of their chelipeds.

    Full Answer >
    Filed Under:

Explore