Duboscquella Chatton, 1920

Holotype species: Duboscquella tintinnicola (Lohmann) Chatton

Original publication and holotype designation: Chatton, É. (1920). Les Péridiniens parasites. Morphologie, reproduction, éthologie. Archives de Zoologie Expérimentale et Générale 59(F1): 1-475, 161 figures, 18 plates.

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Description: Endoparasitic dinophytes of Ciliata. Dinospores passively transmitted by ingestion. Inside host, they lose their flagella and differentiate into a trophontic phase. Pisome covered by a shield - a thickened part of the amphiesma - limited by a fibrous ring, the perinema. Funnel-shaped skeletal structure of uncertain function attached to the perinema marks the ventral side of the parasite. Some species form large food vacuoles before palintomic cell division leads to numerous biflagellated dinospores. These may be either micro- or macrospores but the progeny of 1 infestation are always of equal size. Microspores possess only 1 flagellum but macrospores have 2 flagella in D. cachoni. Information on chromosome number and exact description of sexuality missing in recent studies although such was reported in older works. Endoparasites of marine ciliates, mainly tintinnids and dinoflagellates of the Noctilucales. Cells without chloroplasts. Infection rate of the host may be very high, therefore it is suspected that the parasite may control population dynamics of the host.

Information contributed by: M. Elbrächter. The most recent alteration to this page was made on 2023-06-20 by E.A. Molinari Novoa.

Taxonomic status: This name is of an entity that is currently accepted taxonomically.

Gender: This genus name is currently treated as feminine.

Most recent taxonomic treatment adopted: Kawai, H. & Nakayama, T. (2015). Introduction (Heterokontobionta p.p.), Cryptophyta, Dinophyta, Haptophyta, Heterokontophyta (except Coscinodiscophyceae, Mediophyceae, Fragilariophyceae, Bacillariophyceae, Phaeophyceae, Eustigmatophyceae), Chlorarachniophyta, Euglenophyta. In: Syllabus of plant families. Adolf Engler's Syllabus der Pflanzenfamilien. Ed. 13. Phototrophic eukaryotic Algae. Glaucocystophyta, Cryptophyta, Dinophyta/Dinozoa, Haptophyta, Heterokontophyta/Ochrophyta, Chlorarachnniophyta/Cercozoa, Chlorophyta, Streptophyta p.p. (Frey, W. Eds), pp. 11-64, 103-139. Stuttgart: Borntraeger Science Publishers.

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Contributors
Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in CD format. These AlgaeBase descriptions are now being continually updated, and each current contributor is identified above. The PSA and AlgaeBase warmly acknowledge the generosity of all past and present contributors and particularly the work of Dr Parker.

Descriptions of chrysophyte genera were subsequently published in J. Kristiansen & H.R. Preisig (eds.). 2001. Encyclopedia of Chrysophyte Genera. Bibliotheca Phycologica 110: 1-260.

Linking to this page: https://www.algaebase.org/search/genus/detail/?genus_id=44941

Citing AlgaeBase
Cite this record as:
E.A. Molinari Novoa in Guiry, M.D. & Guiry, G.M. 20 June 2023. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 20 April 2024