Alien cyanobacteria Anabaena bergii var. limnetica Couté et Preisig from Lithuania: Some aspects of taxonomy, ecology and distribution

Abstract

a b s t r a c tThe anthropogenic eutrophication of surface waters and the global climate warming promoted some bloom-forming tropical cyanobacteria, including Anabaena, distribution northwards. Anabaena bergii var. limnetica was for the first time recorded in Lithuania from the hypertrophic Lake Gineitiškės in 2008. It developed when the water temperature reached its annual maximum (July-August); its highest biomass (0.26 mg L −1 ) was reached at the end of July. Akinetes formation started in the middle of August. The morphological variability of A. bergii var. limnetica morphospecies is presented. The morphological, ecological differences and distribution of A. bergii var. limnetica and the related morphospecies A. bergii, A. bergii f. minor, Anabaena minderi are discussed.

Toxic cyanobacteria and cyanotoxins in European waters – recent progress achieved through the CYANOCOST Action and challenges for further research

“…Among other alien species that occur more and more frequently in Europe are Chrysosporum bergii (Ostenfeld) E. Zapomělová, O. Skácelová, P. Pumann, R. Kopp & E. Janeček, Chrysosporum ovalisporum (Forti) E. Zapomělová, O. Skácelová, P. Pumann, R. Kopp & E. Janeček, and Sphaerospermopsis aphanizomenoides (Forti) Zapomělová, Jezberová, Hrouzek, Hisem, Reháková & Komárková. These are known CYN-producers (with the exception of the last one the toxicity of which remains debatable) (Quesada et al, 2006;Kaštovskỳ et al, 2010;Koreivienė and Kasperovičenė, 2011) and an increasing distribution and abundance of these species may contribute to additional toxic stress in European freshwaters.…”

An overview of diversity, occurrence, genetics and toxin production of bloom-forming Dolichospermum (Anabaena) species

“…From the combined effects of eutrophication and climate change, Dolichospermum blooms have experienced wider occurrence and distribution, prolonged duration and stronger intensity (Singh et al, 2010Koreivienė and Kasperovičienė , 2011;Huber et al, 2012;O'Neil et al, 2012;Ciré s et al, 2013;Slim et al, 2014). Dolichospermum blooms commonly occur between late spring and middle autumn, in some systems followed by Microcystis blooms (Cook et al, 2004;Wang et al, 2013).…”

“…The heightened recent intensity and duration of Dolichospermum blooms (Singh et al, 2010Koreivienė and Kasperovičienė , 2011;Huber et al, 2012;O'Neil et al, 2012;Ciré s et al, 2013;Slim et al, 2014) have been accompanied by surface scums, reduced water transparency, anoxic conditions due to bacterial decomposition of the bloom biomass, and reduced diversity of natural phytoplankton (O'Neil et al, 2012). These effects have increased the financial burden of water treatment when associated with drinking water sources (Lee et al, 2000).…”

“…The reported toxins produced by these species can be categorized by chemical structure into three different groups: cyclic peptides (microcystin), alkaloids (anatoxin-a, anatoxin-a(S), saxitoxin, and cylindrospermopsin) (Carmichael, 1986;Chorus and Bartram, 1999;Stü ken et al, 2009;AlTebrineh et al, 2010;Žegura et al, 2011;Singh and Dhar, 2013;Akcaalan et al, 2014;Corbel et al, 2014;Sanchez et al, 2014) and lipopolysaccharide. In recent decades, eutrophication in waters from anthropogenic activities, combined with global warming, have promoted Dolichospermum blooms to expand both in size and duration (Singh et al, 2010Koreivienė and Kasperovičienė , 2011;Huber et al, 2012;O'Neil et al, 2012;Ciré s et al, 2013;Slim et al, 2014). Occurrences of Dolichospermum species and their toxins in large quantities have been documented in numerous water bodies (e.g., Tsujimura and Okubo, 2003;Cook et al, 2004;John and Kemp, 2006;Karjalainen et al, 2007;Kravchuk, 2009;Ciré s et al, 2013;Wang et al, 2013;Callieri et al, 2014), and the incidences of public exposure through drinking water or recreational activities have become more serious (e.g., Bowling and Baker, 1996;Al-Tebrineh et al, 2012), making a review on Dolichospermum cyanobacteria timely.…”

Response of Freshwater Bloom-Forming Planktonic Cyanobacteria to Global Warming and Nutrient Increase

“…Anabaena bergii ostenfeld, Aphanizomenon aphanizomenoides (Forti) Hortobágyi & Komárek, Cylindrospermopsis raciborskii (Woloszynska) Seenayya & Subba Raju are considered previously as tropical and subtropical species, have expanded their distribution to temperate zone, as a response to increasing atmosphere temperature (Stüken et al, 2006;Koreivienė & Kasperovičienė, 2011). Invasive C. raciborskii are filamentous cyanobacteria, which can tolerate a wide range of environmental conditions, but temperature is a key factor for this species with the optimal growth rate assessed at 25-35ºC (BRiand et al, 2004;caStRo et al, 2004).…”