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Species of Euglena were among the first protists to be seen under the microscope. In 1674, in a letter to the Royal Society, the Dutch pioneer of microscopy Antonie van Leeuwenhoek wrote that he had collected water samples from an inland lake, in which he found "animalcules" that were "green in the middle, and before and behind white."
Euglena gracilis is a freshwater species of single-celled alga in the genus Euglena. It has secondary chloroplasts , and is a mixotroph able to feed by photosynthesis or phagocytosis . It has a highly flexible cell surface, allowing it to change shape from a thin cell up to 100 μm long to a sphere of approximately 20 μm.
Euglena Ehrenberg, 1830 – 174 spp. Euglenaformis Bennett & Triemer, 2014 – 3 spp. Euglenaria Karnkowska, Linton & Kwiatowski, 2010 – 4 spp. Monomorphina Mereschkowsky, 1877 – 17 spp. Strombomonas Deflandre, 1930 – 99 spp. Trachelomonas Ehrenberg, 1834 – 410 spp. Family Phacaceae [Phacidae] Kim, Triemer & Shin, 2010. Discoplastis ...
The phagotrophs, although paraphyletic, have historically been classified under the name of Heteronematina. [9] In addition, euglenids can be divided into inflexible or rigid euglenids, and flexible or metabolic euglenids which are capable of 'metaboly' or 'euglenid motion'. Only those with more than 18 protein strips in their pellicle gain ...
If treated as an alga, it would fall under the International Code of Botanical Nomenclature (ICBN) and its correct name would be Euglenaceae; if treated under the International Code of Zoological Nomenclature (ICZN) it is called Euglenidae. [1] Euglenids such as these are considered to be ambiregnal protists due to their parallel naming systems ...
Paramylon is made in the pyrenoids of Euglena. [1] The euglenoids have chlorophylls a and b and they store their photosynthate in an unusual form called paramylon starch, a β-1,3 polymer of glucose. The paramylon is stored in rod like bodies throughout the cytoplasm, called paramylon bodies, which are often visible as colorless or white ...
By Keith Morrison Taking the phrase of "putting it under the microscope" quite literally, the Nikon Small World contest recently announced its winners for 2014. Now in its 40th year, the contest ...
Euglenales consists mostly of freshwater organisms, in contrast to its sister Eutreptiales which is generally marine. Cells have two flagella, but only one is emergent; the other is very short and does not emerge from the cell, so cells appear to have only one flagellum. [3]