Korshikoviella P.C., 1959: 63
Holotype species: Korshikoviella gracilipes (F.D.Lambert) P.C.Silva
Currently accepted name for the type species: Korshikoviella michailovskoensis (Elenkin) P.C.Silva
Original publication and holotype designation:Silva, P.C. (1959). Remarks on algal nomenclature II. Taxon 8: 60-64.
Taxonomic status: currently recognized as a distinct genus.
Description: Solitary cells attached by cell wall process, sometimes occurring in clusters on host animals. Cells straight or curved, one species (K. schaefernae) with broadly to slightly pointed upper end, most species narrowing to needle like appendage at upper end, opposite pole also attenuate with straight to dichotomous attachment organ. Cells elongate, 25-480 x 3-23 µm with smooth cell walls. Cells uninucleate; chloroplast parietal, band shaped and single, with single pyrenoid; however, during sporogenesis multiple chloroplasts and pyrenoids present. Asexual reproduction by biflagellate zoospores; up to 64 per sporangium, released by tear in lateral wall. Zoospores with anterior contractile vacuoles, and parietal, band shaped chloroplast with pyrenoid and stigma. During sporogenesis in at least one species (K. michailovskoensis) pyrenoid division precedes chloroplast and nuclear division. Initial divisions of sporangium always transverse. After settlement, spores may develop single spine before assuming typical morphology. Sexual reproduction described for K. gracilipes. Gametes non-flagellated, spermatia oval, to 5 µm long, with numerous gametes liberated from single differentiated cell. Female gametangium divides transversely to form two gametes. Spermatia attach to female gametangial wall. After syngamy and zygote maturation, smooth walled zygotes release through lateral wall. Site of meiosis unknown but presumably on germination of zygote. Korshikoviella spp. mostly epizoic on planktonic animals in freshwater, sometimes secondarily planktonic; reported from Europe, North America, Asia and Africa, although several species restricted to Europe. Genus included in Characium by some authors. Species distinguished based on differences in cell size and shape.
NCBI Nucleotide Sequences
Numbers of names and species: There are 11 species (and infraspecific) names in the database at present, of which 5 have been flagged as currently accepted taxonomically.
Names: ('C' indicates a name that is currently accepted taxonomically; 'S' a homotypic or heterotypic synonym; 'U' indicates a name of uncertain taxonomic status, but which has been subjected to some verification nomenclaturally; 'P' indicates a preliminary AlgaeBase entry that has not been subjected to any kind of verification. For more information on a species click on it to activate a link to the Species database):
Korshikoviella gracilipes var. minor (Korshikov) L.Péterfi P
Korshikoviella gracilipes (F.D.Lambert) P.C.Silva S - type
Korshikoviella issajevii var. spinosa (Korshikov) Ergashev P
Korshikoviella issajevii (Kisselev) Ergashev S
Korshikoviella judayi (G.M.Smith) Ergashev S
Korshikoviella limnetica (Lemmermann) P.C.Silva C
Korshikoviella michailovskoensis (Elenkin) P.C.Silva C
Korshikoviella mystacina (Hortobágyi & Németh) Philipose P
Korshikoviella rotundata P
Korshikoviella schaefernai (Fott) P.C.Silva C
Korshikoviella setosa (Filarszky) P.C.Silva C
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: http://www.algaebase.org/search/genus/detail/?genus_id=43384
Cite this record as:
Michael Guiry in Guiry, M.D. & Guiry, G.M. 2013. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 13 December 2013.
Algaebase taxon LSID: urn:lsid:algaebase.org:taxname:6998