Abstract
The invasion success of the cyanobacterium Cylindrospermopsis raciborskii in experimental mesocosms: genetic identity, grazing loss, competition and biotic resistance
Highlights
Besides many prominent and obvious examples of biological invasions in freshwater systems, a number of less visible invasions occur and may cause serious problems (Litchman 2010)
One microbial invader that has received a lot of attention is the cyanobacterium Cylindrospermopsis raciborskii (Woloszynska) Seenayy et Subba Raju, that has spread from tropical to temperate regions worldwide with a number of negative effects on water quality such as bloom formation, decreased water transparency and toxin production (Sukenik et al 2015)
Two out of three genotypes did not withstand the transfer into the lake water, whether this was sterile filtered water or included the whole plankton community
Summary
Besides many prominent and obvious examples of biological invasions in freshwater systems, a number of less visible invasions occur and may cause serious problems (Litchman 2010). Briand et al 2004; Mehnert et al 2010; Bonilla et al 2016), N-fixation (Saker and Neilan 2001; Spröber et al 2003; Moisander et al 2012) and the presence of akinetes (Wiedner et al 2007; Mehnert et al 2014) None of these traits is unique for C. raciborskii but common for some other cyanobacteria and/or eukaryotic phytoplankton. Cladorerans (Soares et al 2009a; Panosso and Lürling 2010) and copepods (Rangel et al 2016) and rotifers (Soares et al 2010; Sperfeld et al 2010; Kâ et al 2012) have been shown to ingest and/or even suppress C. raciborskii in small-scale laboratory experiments This suggests that a combination of traits in relation to environmental conditions drives the invasion success of C. raciborskii. Experimental studies under near-natural conditions in a community context are lacking, needed to elaborate which traits under what kind of environmental conditions are responsible for invasion success
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