Английская Википедия:Gubernaculum (nematode anatomy)

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Файл:Gongylonema pulchrum nematode from man Figure 2f.jpg
Posterior end of a male nematode, Gongylonema pulchrum, showing right spicule and gubernaculum
Файл: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

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