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The stomatocyst of Mallomonas acaroides v. muskokana (Chrysophyceae)

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Abstract

The stomatocyst of Mallomanas acaroides v. muskokana is described based on observations made from both live populations and surface sediment remains. The cyst is slightly ovate in shape, covered with evenly spaced, ornamented spines and has a short cylindrical collar with a variable apex and internal annulus surrounding the pore. The spines have a thickened base, a cylindrical middle section and a flattened apex with a ring of finger-like projections. Several immature stages of development are described and the stomatocyst is compared to those described for phylogenetically similar species. Complementary investigations of stomatocysts from both living (planktonic) and sediment collections can greatly facilitate the identification of stomatocyst morphotypes.

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Author notes

  1. Peter A. Siver

    Present address: Dept. Botany, Connecticut College, 06320, New London, CT, USA

Authors and Affiliations

  1. Biology Department, Western Connecticut State University, 06810, Danbury, CT, USA

    Peter A. Siver

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  1. Peter A. Siver
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Additional information

This is the second in a series of four papers published in this dedicated issue entitled ‘Application of Chrysophyte Stomatocysts in Paleolimnology’. Dr. C.D. Sandgren served as guest editor for these papers.

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Siver, P.A. The stomatocyst of Mallomonas acaroides v. muskokana (Chrysophyceae). J Paleolimnol 5, 11–17 (1991). https://doi.org/10.1007/BF00226556

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  • DOI: https://doi.org/10.1007/BF00226556

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