Toxocara canis (Nematoda: Ascaridae): the fine structure of the oviduct, oviduct-uterine junction and uterus

Title:

Toxocara canis (Nematoda: Ascaridae): the fine structure of the oviduct, oviduct-uterine junction and uterus

Creator:

Bruňanská, Magdaléna

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:6428fe23-7a6a-4852-be58-c7684d2de784
uuid:6428fe23-7a6a-4852-be58-c7684d2de784
urnnbn:urn:nbn:cz:aba007-000dmt

Subject:

ultrastructure, oviduct, oviduct-uterine junction, uterus, and Toxocara canis

Type:

model:internalpart and TEXT

Format:

print

Description:

The fine structure of the oviduct, oviduct-uterine junction and uterus of the nematode Toxocara canis (Werner, 1782) is described. Columnar-type epithelioid cells with numerous microvilli at the apical membrane border the oviduct lumen. Many electron dense secretory products are present in these cells. The cells lining the oviduct-uterine junction have no microvilli. They are coated with an electron-dense layer and contain numerous membrane-bound dense material containing bodies. Externally, the cells are surrounded by a basal lamina and muscle cells. The epithelial cells lining the greater part of the paired uteri appear to be rather flat. The oocytes inside the oviduct are covered with a dense thick plasma membrane and contain lipid droplets, dense granules and glycogen. The morphology of the oocytes before the fertilization inside the oviduct-uterine junction resembles that of the oocyte in the oviduct. After the fertilization the egg shell formation takes place. The egg shell of T.canis is composed of four layers: uterine, vitelline, middle chitinous and inner layer. The differences between the fine structure of the egg shell of T. canis and other related nematodes are discussed.

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

55-61 and 57-63

Source:

Folia parasitologica | 1997 Volume:44 | Number:1

Harvested from:

CDK

Metadata only:

false