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| Brachionus calyciflorus forma anuraeiformis |
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| Brachionus calyciflorus anuraeiformis, a variety with long spines (2) |
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| Brachionus calyciflorus anuraeiformis, a variety with long spines (1) |
| If the carnivorous rotifer Asplanchna is present in the water B. calyciflorus develops long spines which function as a protection because with the spines the animal is too bulky to be engulfed by the predator. It has been shown that the growth of the spines is induced by a substance that is produced by Asplanchna itself. An interesting topic with developmental, genetic and ecological facets. |
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| Brachionus calyciflorus anuraeiformis, another specimen with extended foot (2) |
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