arrayname: original 
Nannotax3 - ntax_non_cocco - Haptolina brevifilum Nannotax3 - ntax_non_cocco - Haptolina brevifilum

Haptolina brevifilum


Classification: ntax_non_cocco -> Haptophytes -> Prymnesiales -> Prymnesiaceae -> Haptolina -> Haptolina brevifilum
Sister taxa: H. brevifilum, H. ericina, H. fragaria, H. herdlensis, H. hirta, H. sp.

Taxonomy:

Citation: Haptolina brevifilum (Parke and Manton in Parke et al. 1955) Edvardsen & Eikrem, in Edvardsen et al., 2011
Taxonomic rank: species
Basionym: Chrysochromulina brevifilum Parke & Manton in Parke et al., 1955
Synonyms:

Catalog entries: Chrysochromulina brevifilum

Original description: Motile cells sphaeroidal to pyriform with flagellar pole usually flattened; metaboly of body well-marked particularly at non-flagellar pole; cells 4-7 mm (exceptionally 3.5-11.5 µm) in length or diameter. Two equal, homodynamic, shortly mucronate flagella, 2½-3½ times cell diameter in length and one haptonema, 2-2½ times cell diameter in length when fully extended, arising close together at flattened pole. Periplast covered by very thin sculptured ellipsoid scales, approximately 0.7µm. across, each with a central spine attached by four decurrent ridges, spine length approximately equal to scale diameter.

Cells uninucleate, no stigma. Chromatophores usually 2 or 4, occasionally 1 or 8, golden brown; in motile phase saucer-shaped, ellipsoid or oblong, parietal with small globular body (pyrenoid ?) on inner face of each near the margin towards the non-flagellar pole; in non-motile phase deeply lobed or stellate. Oil and leucosin produced. Muciferous bodies conspicuous, usually inrows,buttheirpositionchangingwiththemetabolyofthebody. Nutrition holophytic and/or phagotrophic. Not toxic to fish.

In motile phase asexual reproduction by fission into 2 or 4 daughter-cells: in non-motile phase by fission of amoeboid cells to produce 4 walled daughter-cells which probably liberate motile phase.

Type images:


Morphology:

Cell spherical; Flagella equal, haptonema shorter; Scales plate-like (2 types) & spine-bearing with radial ribs overlaying concentric fibrils on both faces; Pyrenoids immersed, traversed by thylakoids (Edvardsen et al. 2011)

Geological Range:
Last occurrence (top): Extant. Data source:
First occurrence (base): within No known fossil record modern (0.00-0.00Ma, base in "Holocene" stage). Data source:

References:

Birkhead, M. & Pienaar, R. N. (1994b). The ultrastructure of Chrysochromulina brevifilum Prymnesiophyceae. European Journal of Phycology. 29: 267-280. gs

Edvardsen, B., Eikrem, W., Throndsen, J., Sáez, A. G., Probert, I. & Medlin, L. K. (2011). Ribosomal DNA phylogenies and a morphological revision provide the basis for a revised taxonomy of the Prymnesiales (Haptophyta). European Journal of Phycology. 46(3): 202-228. gs

Parke, M., Manton, I. & Clarke, B. (1955). Studies on marine flagellates. II. Three new species of Chrysochromulina. Journal of the Marine Biological Association of the United Kingdom. 34: 579-604. gs


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Haptolina brevifilum compiled by Jeremy R. Young viewed: 23-3-2025

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