Gubernaculum (nematode anatomy)

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
File:Gongylonema pulchrum nematode from man Figure 2f.jpg
Posterior end of a male nematode, Gongylonema pulchrum, showing right spicule and gubernaculum
File:Parasite140007-fig3 Philometra piscaria Moravec & Justine, 2014 (Nematoda, Philometridae).tif
Drawings of a male philometrid nematode - E and F represent the gubernaculum

In nematodes, the gubernaculum is a hardened or sclerotized structure in the wall that guides the protrusion of the spicule during copulation.[1] For example, in Caenorhabditis elegans, spicules serve to open and dilate the vagina of the hermaphrodite and the gubernaculum is a grooved plate in which the spicules move; the gubernaculum is controlled by two erector and two protractor muscles.[1]

The shape and size of the gubernaculum are often important characters for the systematics of nematodes.[2]

References

<templatestyles src="Reflist/styles.css" />

  1. a b Script error: No such module "citation/CS1".
  2. Script error: No such module "citation/CS1". Template:Open access

Script error: No such module "Check for unknown parameters".

Template:Asbox