Colored Flagellates –
Archaeplastida (Part), Cryptista (Part), Discoba (Part), SAR-Stramenopiles (Part), SAR-Alveolates (Part)
Observations on Volvox globator
Position in the EOL taxonomic tree. Please click on the tree view below to access EOL (Encyclopedia of Life).
Volvox globator Linnaeus 1758
Most likely ID: n.a.
Basionym: n.a.
Add’l Synonyms: Volvox stellatus Ehrenberg 1832
Sampling date 10/2017. Scale bars indicate 100 µm (1), 50 µm (2), 25 µm (3).
Three images.
The colonies of Volvox are not just agglomerations of cells that are mechanically united, but contain differently specialized cells. For example, the cell colony is differentiated into front and back. The cells at the front end have a larger eye spot; this part is also directed forward when the whole colony moves. At the opposite end of the colony, the daughter colonies or sex cells are formed.
The vegetative cells of the mother colony perish after reproduction (sexually and asexually). Thus, in flagellates, the phenomenon occurs that certain cells of a colony are excluded from reproduction from the outset (creation of a “corpse” during reproduction).
| First: | Whole colony. View of the rear half with the special cells for reproduction (goinidia). |
| Second and third: | Close-up. The large cells in the association are the reproductive cells. They develop either asexually into daughter colonies or into sex cells (eggs or sperms). |
Please click on < or > on the image edges or on the dots at the bottom edge of the images to browse through the slides!
Place name: Pond Domänental near Kronshagen (Kiel, Germany)
Latitude: 54.33211 Longitude: 10.060821
Microscope Zeiss Axioplan, camera Olympus OM-D-E-M5 MKII. DOF images.
© Wolfgang Bettighofer,
images under Creative Commons License V 3.0 (CC BY-NC-SA).
For permission to use of (high resolution) images please contact postmaster@protisten.de.
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teliferum
pseudopyramidatum
pyramidatum
scabrum
capitulum
forficulatum
oligacanthum
var. incisum
chlamydosporum
arcuatum
var. subavicula
truncata
var. quadrata
rubescens
venustum
var. excavatum
ralfsii
var. montanum
ralfsii
digitus
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intermedium
dissiliens
kuetzingii
ralfsii
var. hybridum
aureus
botrytis
quadratum
quadrum
crassa
digitus
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