Izvorni znanstveni članak

https://doi.org/10.1515/botcro-2015-0027

First report of Navicula jakovljevicii Hustedt (Bacillariophyta) from Hungary: distribution, comparative morphology and a related species

Viktória B-Béres ; Environmental Protection and Nature Conservation Authority, Trans-Tisza Region, Debrecen, Hatvan u. 16. H-4025 Hungary
István Bácsi ; University of Debrecen, Department of Hydrobiology, Debrecen, Egyetem tér 1. H-4032 Hungary
Enikő T-Krasznai ; Environmental Protection and Nature Conservation Authority, Trans-Tisza Region, Debrecen, Hatvan u. 16. H-4025 Hungary
Zsuzsanna Kókai ; Environmental Protection and Nature Conservation Authority, Trans-Tisza Region, Debrecen, Hatvan u. 16. H-4025 Hungary
Krisztina Buczkó ; Hungarian Natural History Museum, Budapest, Könyves Kálmán krt. 40. H-1476 Hungary

Sažetak

In Hungary Navicula jakovljevicii was firstly recorded in biofilm of Elodea nuttallii in 2005 in an oxbow of the catchment area of the River Danube. Subsequently, in 2006, N. jakovljevicii was also found in the same oxbow on reed stems as well. In the following years it appeared in another oxbow, suggesting an expanding distribution in the tributaries of the Danube in Hungary. The Hungarian population can be characterised as having mixed morphological features in comparison with other known N. jakovljevicii populations of Europe. When the morphological study was expanded, a similar, but 'giant form' was detected in fossil material. We found similarities and a possible connection between N. jakovljevicii and Navicula lucida, a diatom taxon described from a Neogene deposit in the Carpathian Basin. Despite the morphological similarities in the shape, apices, striae pattern and raphe structure of these two species, there are significant differences in valve dimensions: the valves of N. lucida are larger and more heavily silicified than N. jakovljevicii.

Ključne riječi

biofilm; Danube; Elodea nuttalli; Navicula jakovljevicii; Navicula lucida; oxbow; Pantocsek collection

Hrčak ID:

146025

URI

https://hrcak.srce.hr/146025

Datum izdavanja:

1.10.2015.

Posjeta: 1.909 *