Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 84. (Budapest 1992)

Kristiansen, J. ; Padisák, J.: Silica-scaled chrysophytes (Chrysophyceae and Synurophyceae) from the Kis-Balaton Reservoir, Hungary

7. Synura curtispina (PETERSEN & HANSEN) ASMUND (Fig. 8) - Recorded from only a few places in different parts of the world. New to Hungary. - Locality: No 20. 8. Synura petersenii KORSHIKOV (Fig. 9) - The most widely distributed Synura species, cosmopolitan, also found in highly eutrophic localities (KRISTIANSEN 1975,1981). New to Hungary. - Locality: No 13. Figs 7-9. FM micrographs of the chrysophyte scales found in the Kis-Balaton Reservoir. Magnification for all: 10,000x. 7 = Mallomonas acaroides, domed scale, 8 = Synura curtispina, spine-bearing body scale, 9 = Synura petersenii, body scale The composition of this flora of silica-scaled chrysophytes is characteristic for eutrophic to highly hypertrophic localities (KRISTIANSEN 1985). Most of the species are common and widely distributed, even cosmopolitan (see e. g. ASMUND & KRISTIANSEN 1986). The record of Chrysosphaerella anmdata, which was recently described from Austria and has been recorded from widely separated places in the world, is interesting. Most of the species found in these samples are known to occur in other places throughout the year, even in summer. However, most chrysophytes prefer lower temperatures, and a much richer flora might be present in vernal samples (comp. KRISTIANSEN 1988). Before this survey in Kis-Balaton reservoir 28 taxa of scaled chrysophytes were reported from Hungary, 17 of which cannot be identified because their scale structure is not known from the original descriptions (Appendix). * * * Acknowledgments - We thank the staff of the Kis-Balaton Laboratory, West Transdanubian District Water Authority, for their help in sampling. Assistance in preparation for EM and in photographic work was given by Lisbeth Hankrogh and Lene Christiansen. The on-line data bank "Flora et Iconographia Algarum Hungáriáé" (Botanical Department of the Hungarian Natural History Museum) was used for the review on Hungarian silica-scaled chrysophyte flora (Appendix), which was supported by the Hungarian National Science Foundation (OTKA No 3186). The studies were officially sponsored by the Kereskedelmi Bank Ltd.