caa a22 4500 445891025 CHVBK 20180317145616.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s10750-011-0743-z doi (NATIONALLICENCE)springer-10.1007/s10750-011-0743-z Effect of temperature on size and shape of silica scales in Synura petersenii and Mallomonas tonsurata (Stramenopiles) [Elektronische Daten] [Martina Pichrtová, Yvonne Němcová] Synurophytes are planktonic protists whose cells are covered with silica scales. According to the temperature-size rule, protists decrease in size with increasing temperature. Here, we showed that inorganic silica scales responded to increasing temperature in the same way as the cells did. Two species, Mallomonas tonsurata and Synura petersenii, were cultivated at five temperature levels (5, 10, 15, 20 and 25°C) and the methods of geometric morphometrics were applied for scale size and shape data analyses. We observed that the shape of the scales was significantly affected by the cultivation temperature. The overall shape change from rounded, circular scales to oval or more elongated scales seemed to be a general feature in synurophytes and may be considered a consequence of rising temperature. Moreover, the difference in shape remained significant even if the effect of size (allometric effect) was separated. Finally, we compared the level of the scales' morphological variation among all temperature treatments. The results indicated that the cultivation temperature of 25°C negatively affected cellular processes involved in scale biogenesis. The use of the scale shape data has potential in palaeoecological research. Springer Science+Business Media B.V., 2011 Allometry nationallicence Disparity nationallicence Geometric morphometrics nationallicence Silica scales nationallicence Synurophyceae nationallicence Temperature-size rule nationallicence Pichrtová Martina Department of Botany, Faculty of Science, Charles University in Prague, Benátská 2, 128 01, Praha 2, Czech Republic aut Němcová Yvonne Department of Botany, Faculty of Science, Charles University in Prague, Benátská 2, 128 01, Praha 2, Czech Republic aut Hydrobiologia Springer Netherlands 673/1(2011-09-01), 1-11 0018-8158 673:1<1 2011 673 10750 https://doi.org/10.1007/s10750-011-0743-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-011-0743-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pichrtová Martina Department of Botany, Faculty of Science, Charles University in Prague, Benátská 2, 128 01, Praha 2, Czech Republic aut NATIONALLICENCE 700 1- Němcová Yvonne Department of Botany, Faculty of Science, Charles University in Prague, Benátská 2, 128 01, Praha 2, Czech Republic aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 673/1(2011-09-01), 1-11 0018-8158 673:1<1 2011 673 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer