Chrysolykos B.Mack, 1951

Holotype species: Chrysolykos planctonicus B.Mack

Original publication and holotype designation: Mack, B. (1951). Morphologische und entwicklungeschichtliche Untersuchungen an Chrysophyceen. Österreichische Botanische Zeitschrift 98: 249-279, 3 figures.

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Description: Small, solitary, loricate monads. Lorica hyaline, curved or not, with 1-2 lateral processes. Lorica constructed of cellulosic fibrils, deposited in loops as in Dinobryon. Cell fixed in the envelope by a basal stalk. It has two heterokont flagella, one parietal chloroplast, sometimes with a stigma, and a basal chrysolaminaran vesicle. Vegetative reproduction by lateral division. Sexual reproduction by isogamy, the two empty loricae remaining attached to the silicified zygote wall. Stomatocysts globular, situated in the lorica mouth. They may be parthenospores, or zygotes with only one lorica attached. True vegetative cysts developing as endocysts have been described from one species; they are formed inside a special envelope placed at the lorica mouth.

Information contributed by: J. Kristiansen. The most recent alteration to this page was made on 2021-10-11 by M.D. Guiry.

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

Gender: This genus name is currently treated as masculine.

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.

Comments: Found in freshwater ponds, in winter and mainly in spring, just after the ice has broken. Widely distributed in northern temperate and arctic regions. Studies on the ecology of the type species and of the genus as a whole have been published by Kristiansen (1965) and Nauwerck (1979).

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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Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in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=44148

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 11 October 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 23 November 2024