Protistology 10 (4) 130–137 (2016) |
Morphological variability of Porosia bigibbosa (Arcellinida: Hyalospheniidae) from East Herzegovina |
University of Novi Sad, Faculty of Sciences, Department of Biology and Ecology, Novi Sad, Serbia | Submitted December 6, 2016 | Accepted December 22, 2016 | Summary The genus Porosia includes two species characterized by presence of two large invaginated pores. These pores are connected by internal tube as in members of the genus Certesella. In this paper, morphological variability of P. bigibbosa (Penard, 1890) Jung, 1942 based on 175 specimens from East Herzegovina is presented. Shell length ranges from 136 to 178 µm (previously noted 128-177 µm), shell width – from 86 to 118 µm (previously noted 83-123 µm), aperture width – from 40 to 51 µm (previously noted 34-49 µm), aperture-pore distance – from 45 to 62 µm (previously noted 52-70 µm), pore-pore distance – from 48 to 80 µm (previously not measured), and area of the optical section – from 9063 to 15706 µm2 (previously not measured). The minimal variability (4.5%) was observed for shell length, while maximal variability (9.01%) was recorded for the area of the optical section. Results of size frequency distribution analysis of shell length and shell width indicate that this population possesses continuous polymorphism.
Key words: biometry, morphometry, protists, taxonomy, testate amoebae
Address for correspondence: Stefan Luketa. Department of Biology and Ecology, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 2, 21000 Novi Sad, Serbia; e-mail: stefan.luketa@dbe.uns.ac.rs |
| Load PDF | Back to Contents | |