Abstract
Stomatocyst 131 Pang & Wang was described from the sedge mires and puddles in the Aershan Geological Park, China and it has not been reported from other localities since its description. We recorded stomatocyst 131 from a shallow lake Zhurmankol in South Urals, Russia. Morphological variability of this morphotype was studied using scanning electron microscopy. We showed that the width of hexagonal pattern as well as the height of the mesh edges significantly varied depending on the maturation stage of the stomatocyst. An amended diagnosis of this stomatocyst is provided.
References
Bazhenova, O.P. (2021) Atlas of stomatocysts of golden algae from the plankton of the Omsk Priirtyshye waterbodies. Omsk, 122 pp. [In Russian]
Brown, K.M., Zeeb, B.A., Smol, J.P. & Pienitz, R. (1997) Taxonomic and ecological characterization of chrysophyte stomatocysts from northwestern Canada. Canadian Journal of Botany 75: 842–863. https://doi.org/10.1139/b97-094
Caba?a, J. & Pi?tek, M. (2004) Chrysophycean stomatocysts from the Staw Toporowy Nizni lake (Tatra National Park, Poland). Annales de Limnologie - International Journal of Limnology 40 (2): 149–165. https://doi.org/10.1051/limn/2004013
Cronberg, G. (1980) Cyst development in different species of Mallomonas (Chrysophyceae) studied by scanning electron microscopy. Archiv für Hydrobiologie Suppl. 56: 421–434.
Cronberg, G. (1988) Variability in size and ultrastructure of the statospore of Mallomonas caudata. Hydrobiologia 161: 31–39. https://doi.org/10.1007/BF00044097
Cronberg, G. (1992) Uroglena dendracantha n. sp. (Chrysophyceae) from Central Småland, Sweden. Nordic Journal of Botany 12: 507–512. http://dx.doi.org/10.1111/j.1756-1051.1992.tb01829.x
Duff, K.E., Douglas, M.S.V. & Smol, J.P. (1992) Chrysophyte cysts in 36 Canadian high arctic ponds. Nordic Journal Botany 12: 471–499. https://doi.org/10.1111/j.1756-1051.1992.tb01331.x
Duff, K.E., Zeeb, B.A. & Smol, J.P. (1995) Atlas of Chrysophycean Cysts. Kluwer Academic Publishers, Dordrecht, 189 pp. https://doi.org/10.1007/978-94-017-0809-8
Firsova, A.D., Bessudova, A.Yu. & Likhoshway, E.V. (2018) Chrysophycean stomatosysts in tributaries of northern limit of Lake Baikal. Acta Biologica Sibirica 4 (4): 25–44. [In Russian] https://doi.org/10.14258/abs.v3i4.3637
Gilbert, S., Zeeb, B.A. & Smol, J.P. (1997) Chrysophyte stomatocyst flora from a forest peat core in the Lena River Region, northeastern Siberia. Nova Hedwigia, Beiheft 64: 311–352. https://doi.org/10.1127/nova.hedwigia/64/1997/311
Holen, D.A. (2014) Chrysophyte stomatocyst production in laboratory culture and descriptions of seven cyst morphotypes. Phycologia 53: 426–432. https://doi.org/10.2216/14-001.1
Ignatenko, M.E., Yatsenko-Stepanova, T.N. & Urzhumov, A.A. (2021) New records of Mallomonas species (Chrysophyceae, Synurales) for the Orenburg Region (South Urals, Russia). Novosti sistematiki nizshikh rastenii 55 (2): 315–323. [In Russian] https://doi.org/10.31111/nsnr/2021.55.2.315
Kapustin, D.A. (2014) Freshwater algae of the Polessian Nature Reserve (Ukraine). International Journal on Algae 16: 43–56. https://doi.org/10.1615/interjalgae.v16.i1.30
Kapustin, D.A. (2018) On morphology of the stomatocyst 53 Duff et Smol, 1991 (Chrysophyceae) from a mire pool on Bali Island (Indonesia). Novosti Sistematiki Nizshikh Rasteniy 52 (1): 75–81. https://doi.org/10.31111/nsnr/2018.52.1.75
Kapustin, D.A. & Kapustina, N.V. (2018) New records of Chrysococcus furcatus (Chrysophyceae) in Russia. Inland Water Biology 11: 384–386. https://doi.org/10.1134/S1995082918040090
Kapustin, D.A., Philippov, D.A. & Gusev, E.S. (2016) Four new chrysophycean stomatocysts with true complex collar from the Shichengskoe raised bog in Central Russia. Phytotaxa 288: 285–290. https://doi.org/10.11646/phytotaxa.288.3.10
Kapustin, D., Sterlyagova, I. & Patova, E. (2019) Morphology of Chrysastrella paradoxa stomatocysts from the Subpolar Urals (Russia) with comments on related morphotypes. Phytotaxa 402 (6): 295–300. https://doi.org/10.11646/phytotaxa.402.6.4
Pang, W., Wang, Y. & Wang, Q. (2012) Ten new chrysophycean stomatocysts ornamented with spines from bogs near Da’erbin Lake, China. Nova Hedwigia, Beiheft 94 (1–2): 193–207. https://doi.org/10.1127/0029-5035/2012/0094-0193
Pang, W. & Wang, Q. (2014) Chrysophycean stomatocysts from the Aershan Geological Park (Inner Mongolia), China. Phytotaxa 187 (1): 1–92. https://doi.org/10.11646/phytotaxa.187.1.1
Pang, W. & Wang, Q. (2016) Chrysophycean stomatocysts from Xinjiang Province, China. Phytotaxa 288 (1): 41–50. https://doi.org/10.11646/phytotaxa.288.1.4
Pang, W. & Wang, Q. (2017) Chrysophycean stomatocysts from the Da Hinggan Mountains. Science Press, Beijing, 253 pp.
Pang, W. & Van de Vijver, B. (2021) Freshwater chrysophycean stomatocysts from Monte Lauro (Buccheri, Sicily, Italy). Phytotaxa 494 (2): 177–192. https://doi.org/10.11646/phytotaxa.494.2.1
Pi?tek, J. & Pi?tek, M. (2008) Chrysophyte stomatocysts from gypsum damp vegetation in Southern Poland. Polish Botanical Journal 53 (1): 57–67.
Pi?tek, J. & Pi?tek, M. (2014) Morphological variability of new chrysophyte stomatocyst forming a single-cyst assemblage in a low-conductivity tropical lake in the Guineo-Congolian rainforest. Phytotaxa 174 (5): 261–271. https://doi.org/10.11646/phytotaxa.174.5.2
Pla, S. (2001) Chrysophycean cysts from Pyrenees. Berlin, 237 pp.
Sandgren, C.D. (1989) SEM investigations of statospore (stomatocyst) development in diverse members of the Chrysophyceae and Synurophyceae. Beiheft zur Nova Hedwigia 95: 45–69.
Shadrina, S.N. (2019) Diversity of chrysophycean (Chrysophyta) stomatocysts in the Gulf of Finland, Baltic sea. Botanicheskii zhurnal 104 (5): 684–698. [In Russian] https://doi.org/10.1134/S0006813619050120
Siver, P.A. (1991) The stomatocyst of Mallomonas acaroides v. muskokana (Chrysophyceae). Journal of Paleolimnology 5: 11–17. http://dx.doi.org/10.1007/BF00226556
Skogstad, A. (1984) Vegetative cells and cysts of Mallomonas intermedia (Mallomonadaceae, Chrysophyceae). Nordic Journal of Botany 4: 275–278. https://doi.org/10.1111/j.1756-1051.1984.tb01498.x
Skogstad, A. & Reymond, O.L. (1989) An ultrastructural study of vegetative cells, encystment, and mature statopores in Spiniferomonas bourrellyi (Chrysophyceae). Nova Hedwigia, Beiheft 95: 71–79.
Smol, J.P. (1984) The statospore of Mallomonas pseudocoronata (Mallomonadaceae, Chrysophyceae). Nordic Journal of Botany 4: 827–831. https://doi.org/10.1111/j.1756-1051.1984.tb02014.x
Soróczki-Pintér, E., Pla-Rabes, S., Magyari, E.K., Stenger-Kovács, C. & Buczkó, K. (2014) Late quaternary chrysophycean stomatocysts in a Southern Carpathian mountain lake, including the description of new forms (Romania). Phytotaxa 170 (3): 169–186. http://dx.doi.org/10.11646/phytotaxa.170.3.3
Van de Vijver, B. & Beyens, L. (1997) The Chrysophyte stomatocyst flora of the moss vegetation from Strømness Bay Area, South Georgia. Archiv für Protistenkunde 148: 505–520. https://doi.org/10.1016/S0003-9365(97)80026-7
Wo?owski, K., Pi?tek, J. & P?achno, B.J. (2011) Algae and stomatocysts associated with carnivorous plants. First report of chrysophyte stomatocysts from Virginia, USA. Phycologia 50 (5): 511–519. https://doi.org/10.2216/10-94.1
Zeeb, B.A. & Smol, J.P. (1993) Chrysophycean stomatocyst flora from Elk Lake, Clearwater County, Minnesota. Canadian Journal of Botany 71: 737–756. https://doi.org/10.1139/b93-086
