Hostname: page-component-586b7cd67f-l7hp2 Total loading time: 0 Render date: 2024-11-27T14:14:41.687Z Has data issue: false hasContentIssue false

Alternation of generations in a coccolithophorid, Cricosphaera carterae (Braarud & Fagerl.) Braarud

Published online by Cambridge University Press:  11 May 2009

D. G. Rayns
Affiliation:
The Plymouth Laboratory

Extract

Material of Cricosphaera carterae was examined cytologically with the acetocarmine technique. Nuclear division is similar to that found in higher plants. Investigations showed there to be a chromosomal alternation of generations, which corresponds to the morphological alternation. The motile phase is diploid, 2n = 42 ± 2, and the non-motile phase is haploid, n = 21 ± 1.

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 1962

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Braarud, T., 1960. On the coccolithophorid genus Cricosphaera n.gen. Nytt Mag. Bot., Vol. 8, pp. 211–12.Google Scholar
Braarud, T. & Fagerland, E. 1946. A coccolithophoride in laboratory culture. Syracosphaera carterae n.sp. Avh. norske VidenskAkad., No. 2, pp. 110.Google Scholar
Cave, M. S. & Pocock, M. A. 1951. The aceto-carmine technic applied to the colonial Volvocales. Stain Tech., Vol. 26, pp. 173–4.CrossRefGoogle Scholar
Godward, M. B. E. 1948. The iron alum acetocarmine method for algae. Nature, Lond., Vol. 161, pp. 203–4.CrossRefGoogle Scholar
Parke, M., 1961. Some remarks concerning the Class Chrysophyceae. Brit, phycol. Bull., Vol. 2, pp. 4755.CrossRefGoogle Scholar
Parke, M., Manton, I. & Clarke, B. 1955. Studies on marine flagellates. II. Three new species of Chrysochromulina. J. mar. biol. Ass. U.K., Vol. 34, pp. 579609.CrossRefGoogle Scholar
Pringsheim, E. G., 1955. Kleine Mitteilungen über Flagellaten und Algen. I. Algenartige Chrysophyceen in Reinkultur. Arch. Mikrobiol., Bd. 21, pp. 401–10.CrossRefGoogle ScholarPubMed
Schwarz, E., 1932. Beiträge zur Entwicklungsgeschichte der Protophyten. IX. Der Formwechsel von Ochrosphaera neapolitana. Arch. Protistenk., Bd. 77, pp. 434–62.Google Scholar
Thomas, P. T., 1940. Acetocarmine technique for fruit material. Stain Tech., Vol. 15, pp. 167–72.CrossRefGoogle Scholar
White, M. J. D., 1942. The Chromosomes. 124 pp. London: Methuen and Co.Google Scholar