Please use this identifier to cite or link to this item: https://biore.bio.bg.ac.rs/handle/123456789/5310
Title: Morphological and ecological characteristics of potentially toxic invasive cyanobacterium Sphaerospermopsis aphanizomenoides (Forti) Zapomelová, Jezberová, Hrouzek, Hisem, Reháková & Komárková (Nostocales, Cyanobacteria) in Serbia
Authors: Jovanović, Jelena
Karadžić, Vesna
Predojević, Dragana 
Blagojević, Ana
Popović, Slađana 
Trbojević, Ivana 
Subakov-Simić, Gordana 
Keywords: Cyanobacteria;Invasive species;Morphology;Occurrence;Serbia;Sphaerospermopsis aphanizomenoides
Issue Date: 9-Oct-2015
Rank: M22
Publisher: Springer
Journal: Brazilian Journal of Botany
Volume: 39
Issue: 1
Start page: 225
End page: 237
Abstract: 
This study investigates the morphology and occurrence of the potentially toxic invasive cyanobacterium recently detected in Serbia, Sphaerospermopsis aphanizomenoides (Forti) (Zapomelová et al. 2010), in correlation with several environmental parameters. The presence of this species was recorded during warm months in three of four studied sites in the Ponjavica River. It was found in a community with invasive Cylindrospermopsis raciborskii (Woloszynska) (Seenayya and Subba Raju 1972) and Raphidiopsis mediterranea (Skuja 1937) in this small, shallow, eutrophic river, with slow water flow. The peak of its abundance was observed in August 2008 (3.36 × 106 cell/ml). The proliferation of this cyanobacterium was caused by very high water temperatures at the beginning of the summer, which resulted in an increase in the biomass of this species in August. The blooms of S. aphanizomenoides often occur under nitrogen depletion due to the formation of heterocysts, but in our study, their number was in positive correlation with the concentration of total dissolved nitrogen at the end of the study period. However, PCA analysis, which included the whole study period, indicated that there is a negative correlation between these two parameters. According to this analysis, in this locality, the factors which control the formation of the akinetes of S. aphanizomenoides are both the concentration of phosphate in the water and temperature. The morphological characteristics (trichome length, dimensions of the vegetative cells, heterocysts and akinetes, and their position) of this species, first recorded in Serbia, were mainly in correlation with those from the Czech Republic. However, individuals of S. aphanizomenoides from Serbia have shown a greater range of morphological variability than previously recorded.
URI: https://biore.bio.bg.ac.rs/handle/123456789/5310
ISSN: 1806-9959
DOI: 10.1007/s40415-015-0223-1
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