Mehl, D.; Reiswig, H.M. (1991). The presence of flagellar vanes in choanomeres of Porifera and their possible phylogenetic implications. Zoologische Systematik und Evolutionsforschung. 29: 312-319.

7938

Mehl, D.; Reiswig, H.M.

1991

29: 312-319

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Wing-shaped projections (vanes) of the flagella of choanomeres are documented from the hexactinellid sponge Aphrocallistes vastus. This observation completes the report of such flagellar structures from the major taxa of the Porifera: Demospongiae/Calcarea and Hexactinellida. It thus allows us to assume flagellar vanes being an autapomorphy of the monophylum Porifera. The wing-shaped flagellar vanes of sponge choanomeres often have been compared with appendages of choanoflagellates, e. g. Codosiga, but fundamental differences seem not to allow any homologization of these structures. Only extensive comparative TEM studies on well-fixated tissues, e. g. from fresh water sponges such as Ephydatia, will settle this question.

Histology, Cytology

Porifera

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