Early development of the myxozoan Buddenbrockia plumatellae in the bryozoans Hyalinella punctata and Plumatella fungosa, with comments on taxonomy and systematics of the Myxozoa

Title:

Early development of the myxozoan Buddenbrockia plumatellae in the bryozoans Hyalinella punctata and Plumatella fungosa, with comments on taxonomy and systematics of the Myxozoa

Creator:

Canning, Elizabeth U., Curry, Alan, and Okamura, Beth

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:c0e2f112-8de6-4a91-83de-6e094a4438c2
uuid:c0e2f112-8de6-4a91-83de-6e094a4438c2
doi:10.14411/fp.2008.032

Subject:

Buddenbrockia, myxoworm, sacculogenesis, muscle primordia, sporogonic cells, cnidarian-like features, and Phylactolaemata

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

We undertook a detailed ultrastructural investigation to gain insight into the early stages of development of the vermiform myxozoan, Buddenbrockia plumatellae Schröder, 1910 in two bryozoan hosts. Early cell complexes arise in the peritoneum after division and migration of isolated cells in the host body wall. The development of cell junctions linking the outer (mural) cells of the complex then produces a sac enclosing a mass of inner cells. Elongation to the vermiform stage (myxoworm) occurs during multiplication and reorganisation of the inner cells as a central core within the single-layered sac wall. The core cells develop into muscle and sporogonic cells separated from the mural cells by a basal lamina. Myogenesis occurs along the length of the myxoworm from cells that differentiate from the central core, and is independent of elongation. Four primary sporogonic cells maintain positions close to the basal lamina, between muscle cells, while giving rise to secondary sporogonic cells that eventually become free in the central cavity. At least some secondary sporogonic cells undergo meiosis. In view of the recent confirmation of the phylogenetic affinity of Buddenbrockia with the Cnidaria, we postulate how features observed in Buddenbrockia may be homologous with cnidarian structures. Finally we propose a new family name, Buddenbrockiidae, to replace Saccosporidae which was proposed previously in breach of the International Code of Zoological Nomenclature.

Language:

English

Rights:

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

Coverage:

241-255

Source:

Folia parasitologica | 2008 Volume:55 | Number:4

Harvested from:

CDK

Metadata only:

false