Nannotax3 - ntax_Farinacci - Chrysochromulina novae-zelandiae Nannotax3 - ntax_Farinacci - Chrysochromulina novae-zelandiae

CATALOG - Chrysochromulina novae-zelandiae


Folder trail: ntax_Farinacci -> Haptophytes -> Chrysochromulina -> Chrysochromulina novae-zelandiae
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Original descriptions of taxa. For coccolithophores, and many calcispheres, these are pages from the Farinacci & Howe Catalog of Calcareous Nannofossils. In other cases (e.g. non-calcifying haptophytes) the data is directly compiled on this site. The "Catalogue of Calcareous Nannofossils" was originally compiled by Prof A. Farinacci 1969-1989, since 2000 it has been updated and extended by Richard Howe - see The Farinacci and Howe Catalog - an Introduction.
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Current identification/main database link: Chrysochromulina novae-zelandiae Moestrup 1979

Compiled data

Citation: Chrysochromulina novae-zelandiae Moestrup 1979
Taxonomic rank: species
Type locality: Type micrograph: Fig.13, from Kaikoura, New Zealand (173°42'E, 42°25'S), 13 September 1974.
Farinacci catalog page (& compiler): n/a
Current citation: Chrysochromulina novae-zelandiae Moestrup 1979


Original Description

Solitary cells, c. 7 µm in diameter as seen in a whole mount (Fig. 13) with two flagella c. 25 µm long, and a coiling haptonema of unknown length (Fig. 14). The cell covered by a periplast of scales, of which two types are very numerous (Figs 16, 18). One (apparently forming an under-layer) is oval, and measures 0.48-0.52 x 0.33-0.37 µm. A system of radiating ridges visible on both surfaces, extending from a rectangular patternless centre. One surface — probably the dorsal side — with a patternless rim.
The second scale type which occurs in large numbers, is circular to oval (Fig. 16), almost certainly forming an upper layer. The scales are smaller than the "under-layer" scales, measuring 0.29-0.38 µm in diameter. A patternless (probably dorsal) rim is present, and radiating lines, distinct on the rim-less side, on the other side are less distinct and visible only in the peripheral part of the scale.
Scales with triangular bases are present in small numbers (Fig. 15), measuring c. 0.37 µm in diameter, apparently with a small spine in each corner.

Extra details from original publication
Loose scales and whole cells were common on the Kaikoura grids, but a cell in which the length of the haptonema could be measured was never seen. In one case a few scales on a cell were observed which were slightly deviant in morphology (Fig. 17), but whether this is abnormal is not known.

The morphology of the scales distinguishes this species from all other described species of Chrysochromulina examined by electron microscopy (now 27). Three further species have been described, though unfortunately without fine structural details. Of these species Zimmermann (pers. comm.) has recently had the opportunity to examine iodine-fixedmaterial of C. birgeri from the type locality (cf. Hallfors & Niemi 1974), and the scale morphology confirms its separation as a distinct species. The two remaining species (described from the Black Sea), C. pontica (Rouchijajnen1966) and C. orbiculata (Rouchijajnen 1972), both differ from C. novae-zelandiae in their much shorter flagella.

The new species described here has been included in the genus Chrysochromulina (rather than in Prymnesium or Platychrysis), because of its coiling haptonema.

Chrysochromulina novae-zelandiae is one of the few species discussed in the present paper which have not so far been found outside New Zealand. Its common occurrence in the Kaikoura plankton should facilitate a detailed study of its internal structure, based either on embeddings of wild populations directly, or on unialgal isolates.

References:

Moestrup, Ø. (1979). Identification by electron microscopy of marine nanoplankton from New Zealand, including the description of four new species. New Zealand. Journal of Botany. 17: 61-95. gs


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Chrysochromulina novae-zelandiae: Catalog entry compiled by Jeremy Young. Viewed: 17-2-2025

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