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Summary

Description
English: These "jelly balls" are colonies of the cyanobacteria species Nostoc pruniforme ("Mare's eggs"), living in freshwater ponds. (Determination was microscopically confirmed by Professor Dr Ludwig Kies, Hamburg.)
Note: Many other single-(or few-)celled organisms also form gelatinous colonies in spherules. A reliable determination is only possible by microscope! The shown species is rather rare today and indicates clean water. Furthermore, my impression is that the trivial name "Mare's eggs" is not exclusively related to the concrete species Nostoc pruniforme, but also used for diverse different spherule algae (?).


Deutsch: Teichpflaumen, bei diesen gallertigen Kugeln handelt es sich um Kolonien der als Nostoc pruniforme bestimmten Süßwasser-Cyanobakterien (oder: "Blaualgen"). Vielen Dank an Prof. Dr. Ludwig Kies, Hamburg, für die mikroskopische Nachbestimmung!
Beachte: Sehr viele andere ein-/wenigzellige Organismen formen ebenfalls gallertige Kolonien in Kugelform. Eine sichere Bestimmung ist normalerweise nur per Mikroskop möglich! Die hier gezeigte Art ist heutzutage nur noch selten zu finden.
Date
Source Own work (collage of 4 pictures). Location (partially ex situ): North-eastern Lower Saxony, Germany.
Author Christian Fischer
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Nostoc pruniforme

inception

October 2005

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0d009696b6e9681778298cd25bb4a45d65194213

determination method or standard: SHA-1

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Date/TimeThumbnailDimensionsUserComment
current23:01, 5 July 2011Thumbnail for version as of 23:01, 5 July 20111,375 × 984 (628 KB)Ficelittle improvement
13:49, 26 November 2005Thumbnail for version as of 13:49, 26 November 20051,375 × 984 (193 KB)Fice*Description: '''''Nostoc pruniforme''''' - these "jelly balls" are special colonies of cyanobacteria in freshwater. *Beschreibung: '''''Nostoc pruniforme''' ('''Wasser- oder Teichpflaumen''') - bei diesen gallertigen Kugeln handelt es sich um Kolonie

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