The shell encloses the cell plasma and has usually a single aperture for the pseudopodia. On the other hand, a strong influence of environmental factors on shell morphometry would lead to serious taxonomic problems, because classification of closely related testate amoebae is primarily based on these characteristics. Therefore a complete understanding of intraspecific variation is necessary before we are able to separate between possible species.' Is for instance the phenomenon of ecomorphosis, the variation caused by the environment (expressed by changes in shell morphology) not only measurable, but also reproducible or even reversible within a few generations? If so, this would give new and fascinating tools for bioindication with testate amoebae, in the laboratory as well as in the field. Furthermore, he stated that 'differences between groups of similar specimens ('phena') may reflect either a speices difference or intraspecific variation. As stressed in Mayr (1969), 'the underestimation of individual variation may have caused more than 50% of all synonyms'. For taxonomical and ecological reasons it is important to estimate the range and form ('genetic', 'nongenetic', as defined in Mayr 1969) of variability within a given taxon. Physical limitations, like diffusion-dependent cells size range, surface tension, or biomechanical preconditions of protists skeletons (see Rhumbler 1898 Vogel and Gutmann 1988 Fenchel 1990) and ecological constraints, like habitat adaptation, will also influence the shape of the amoebae shell, resulting in a great variety of different morphs. shell type and shape, spikes, spines, diaphragms, the aperture) has been commonly used of differentiate between genera or species. The shell architecture of testate amoebae (e.g. Wanner and Meisterfeld 1994 Wanner 1994, 1995). They respond to modified conditions by altering abundance or dominance structure (Lousier 1974 Foissner 1987, 1997) and by changing their shell morphometry (e.g. Testate amoebae are particularly suitable for the fundamental question, whether and how an organism responds to changing environments. Review on the Variability of Testate Amoebae Echinopyxis, Homoeochlamys),Įuglyphinopsis Frenzelina Geamphorella, Hedley, 'An Atlas of Freshwater Testate Amoebae'Ĭopyright: The Natural History Museum, LondonĪnd we thank following scientists and The Society of Protozoologists (The Journal of Protozoology) for quoting text descriptions from their papers.Ĭentropyxis (Syn. It will include both the official binomial nomenclature (scientific names usually in Latin) as well as regional spellings and variants.We reproduce the descriptions of morphology from following books Ĭopyright: CHARLES C THOMAS PUBLISHER, LTD., 1966Ĭ.G. This sections includes definitions from the five kingdoms of living things: Animals, Plants, Fungi, Protists and Monera.

References regarding Stiburus alopecuroides (Hack.) Stapf for further research on medicinal uses or toxicity: Phillips, Lasiochloa alopecuroides Hack., Triphlebia alopecuroides (Hack.) Stapf. It has the following synonyms: Eragrostis alopecuroides Balansa, Eragrostis tincta S.M. This page contains potential references in modern medicine, Ayurveda, and other local traditions or folk medicine. Stiburus alopecuroides (Hack.) Stapf is the name of a plant defined in various botanical sources. Stiburus alopecuroides in Biology glossary Source: Google Books: CRC World Dictionary (Latin names Binomial nomenclature)

Define tincta botanical meaning