Assessment of the vulnerability of Lithuanian lakes to expansion of Gonyostomum semen (Raphidophyceae)

Karosienė, Jūratė; Kasperovičienė, Jūratė; Koreivienė, Judita; Vitonytė, Irma

doi:10.1016/j.limno.2013.10.005

Cited by 18 publications

(23 citation statements)

References 46 publications

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“…In Lake Sęczek, the length of the species varied from 50 to 69 μm, width 32 -41 μm. Hutorowicz et al (2006) and Karosienė et al (2014) determined greater variability of G. semen, 45 -120 × 18 -70 μm and 24 -82 × 14 -48 μm, respectively.…”

Section: Gonyostomum Semen (Ehrenb) Diesingmentioning

confidence: 94%

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Phototrophic microflora of dystrophic Lake Sęczek, Masuria, Poland

Grabowska

Hindák

Hindáková

2014

Oceanological and Hydrobiological Studies

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Microflora of cyanobacteria and algae of small forest dystrophic Lake Sęczek located in the Masurian Lake District, NE Poland, was investigated in 2012 and 2013. A total of 16 genera with 7 species of cyanobacteria and 56 genera with 74 species, 6 varietas and forms of algae were determined. Most of them represented commonly occurring microorganisms of slightly acidic waters, but some of them are considered rare, i.e. the oscillatorian cyanobacterium Katagnymene accurata Geitler (for the first time found in Poland), and green algae Coenochloris sphagnicola Hindák, Mucidosphaerium sphagnale (Hindák) C. Bock, Pröschold et Krienitz, Closterium navicula (Bréb.) Lütkem., and Cosmarium cf. aphaerosporum var. corribense (W. et G.S. West) Krieger et Gerloff., which are described in more detail. As regards the species diversity, the plankton of the lake was rather species-poor in contrast to the algal communities in the Sphagnum littoral.

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Section: Gonyostomum Semen (Ehrenb) Diesingmentioning

confidence: 94%

“…According to Karosienė et al (2014), G. semen is an invasive species in Lithuanian lakes where it occurred in humic, lobelia and eutrophic lakes.…”

Section: Gonyostomum Semen (Ehrenb) Diesingmentioning

confidence: 99%

Phototrophic microflora of dystrophic Lake Sęczek, Masuria, Poland

Grabowska

Hindák

Hindáková

2014

Oceanological and Hydrobiological Studies

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“…Algal samples were collected in the end of July and the beginning of August 2014 from four humic lakes which have had a long history of G. semen blooms Karosiene et al, 2014). Two lakes are located in Eastern Poland (Jelino and Płotycze) and two in Lithuania (Slabada and Natalka).…”

Section: Sampling and Extraction Of Gonyostomum Biomassesmentioning

confidence: 99%

“…The freshwater raphidophyte group consists of several species (Fott, 1968), from which Gonyostomum semen is the best known and intensively studied over the last decade due to the increase in its abundance and common occurrence in European aquatic ecosystems (Cronberg et al, 1988;Rengefors et al, 2012;Pęczuła, 2013;Karosiene et al, 2014;Hagman et al, 2015). The species was previously considered inedible (Havens, 1989) due to its large dimensions which are above the preferred size range for many filterfeeding zooplankton.…”

Section: Introductionmentioning

confidence: 99%

An experimental study on the influence of the bloom-forming alga Gonyostomum semen (Raphidophyceae) on cladoceran species Daphnia magna

Pęczuła

Toporowska

Pawlik‐Skowrońska

et al. 2017

Knowl. Manag. Aquat. Ecosyst.

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-The effect of the unicellular, bloom-forming alga Gonyostomum semen (Raphidiophyceae) on the survival rate and body size of Daphnia magna was tested under experimental laboratory conditions. Using samples from four humic lakes with a long history of Gonyostomum blooms, we exposed D. magna for 72 h to various Gonyostomum treatments which included homogenized biomass (frozen and fresh), live cell populations as well as lake water separated from the concentrated biomass of live cells. Filtered lake water and the chlorophycean alga Stichococcus bacillaris population (homogenized biomass or live cells) we used as controls. Our study revealed that (1) frozen homogenized G. semen biomass in the concentrations typical for blooms was not harmful for Daphnia and appeared to have a nutritive effect because it supported its growth; however, Daphnia mortality occurred after exposure to fresh and highly concentrated cell homogenate containing high amount of mucilage; (2) it is unlikely that living Gonyostomum cells excrete extracellular substances harmful for Daphnia; however, dense live Gonyostomum population that formed mucilaginous aggregates immobilized Daphnia and increased its mortality. The results suggest that various interactions between G. semen and D. magna take place and may play an essential role in natural freshwater ecosystems.Keywords: algal blooms / mucilage / crustaceans / toxicity Résumé -Une étude expérimentale de l'influence de l'algue formant des efflorescences Gonyostomum semen (Raphidophyceae) sur l'espèce de cladocère Daphnia magna. L'effet de l'algue unicellulaire, formant des efflorescences, Gonyostomum semen (Raphidiophyceae) sur le taux de survie et la taille corporelle de Daphnia magna a été testé dans des conditions expérimentales de laboratoire. En utilisant des échantillons de quatre lacs humiques avec un long passé d'efflorescences de Gonyostomum, nous avons exposé D. magna pendant 72 h à différents traitements de Gonyostomum qui incluent : la biomasse homogénéisée (congelée et fraîche), des populations de cellules vivantes ainsi que l'eau du lac séparée de la biomasse concentrée de cellules vivantes. L'eau filtrée du lac et une population d'algues chlorophycées Stichococcus bacillaris (biomasse homogénéisée ou cellules vivantes) ont été utilisées comme témoins. Notre étude a révélé que : (1) la biomasse congelée homogénéisée de G. semen dans les concentrations typiques d'efflorescences n'était pas nocif pour Daphnia et semblait avoir un effet nutritif car elle a soutenu sa croissance, cependant, la mortalité de Daphnia a eu lieu après une exposition à un homogénat frais et hautement concentré de cellules contenant une grande quantité de mucilage ; (2) il est peu probable que les cellules vivantes de Gonyostomum excrètent des substances extracellulaires nocives pour Daphnia, cependant, une population vivante dense de Gonyostomum vivante qui a formé des agrégats mucilagineux a immobilisé Daphnia et a augmenté sa mortalité. Les résultats suggèrent que diverses interactions entre G. se...

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“…Biological and ecological peculiarities, genetic diversity and adaptations of Gonyostomum semen in new areas have been studied using isolated strains of the raphidophyte (Karosienė et al, , 2014Koreivienė et al, 2012Koreivienė et al, , 2013Kasperovičienė et al, 2015a). Also, the investigations have been focused on cyanobacteria and their role in algal blooms in Lithuanian freshwaters.…”

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confidence: 99%

Collection of pure cultures of algae and cyanobacteria for research, teaching and biotechnological applications (Nature Research Centre, Lithuania)

Koreivienė

Kasperovičienė

Savadova

et al. 2016

Botanica Lithuanica

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Koreivienė J., Kasperovičienė J., Savadova K., Karosienė J., Vitonytė I., 2016: Collection of pure cultures of algae and cyanobacteria for research, teaching and biotechnological applications (Nature Research Centre, Lithuania) [Dumblių ir melsvabakterių kolekcija mokslui, mokymui ir biotechnologiniams tyrimams (Gamtos tyrimų centras, Lietuva)]. -Bot. Lith., 22(1): 87-92.The collection of pure cultures of algae and cyanobacteria deposited at the Nature Research Centre is a unique and diverse culture collection in Lithuania. It was initiated on the basis of a few national projects in 2010 as an outcome of ecological and molecular studies on invasive and harmful bloom-forming algae and cyanobacteria. To date, the collection holds more than 500 strains, which belong to ten classes, over 70 genera and 140 species. Strains were isolated from Lithuanian freshwaters and the Curonian Lagoon. The collection serves for various research topics including species interactions, molecular analysis, biotechnology (remediation of wastewaters, cell wall disruption, high-and low-value bioproducts), as well as for teaching purposes. The European Union has recently adopted an ambitious strategy for the development of bioeconomy and advised to cover the growing demand of the food, energy and industrial sectors from the innovative use of sustainable biological resources (Enzing et al., 2014). In this approach, algae have great importance for the future application in industry and other fields. Algal culture collections are irreplaceable and unique source providing consistency and standardized quality material for many types of investigations such as comparative taxonomic, physiological, ecotoxicological and ex situ ecological studies (Day et al., 2004). Ecological investigations of algal and cyanobacteria community in the ecosystems nowadays are often combined with the experimental studies in which pure cultures are included. Also, the development of sustainable and friendly technologies that involve new trends of applied sciences has started in the last two decades, therefore, algae and cyanobacteria serve as natural ecological resource for human being. Based on cultured species, a number of environmental and biotechnological studies that include wastewater treatment, ecological friendly biofuel, aquaculture, production of various types of highvalue products such as fatty acids, pigments or antitumor agents useful for cosmetic and drug industries have been developed (gachon et al., 2007; Mata et al., 2010;BrEnnan et al., 2012 Keywords 88Koreivienė J., Kasperovičienė J., savadova K., Karosienė J., vitonytė i.are the leaders among countries that have the largest number of collections (Table 1). Several thousands of strains originated from different climate regions and various types of environments (freshwater, marine, hypersaline or terrestrial) are maintained in the largest culture collections. Nevertheless, the authentic strains isolated from the original localities in the particular region or country is an invaluable reso...

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Assessment of the vulnerability of Lithuanian lakes to expansion of Gonyostomum semen (Raphidophyceae)

Cited by 18 publications

References 46 publications

Phototrophic microflora of dystrophic Lake Sęczek, Masuria, Poland

Phototrophic microflora of dystrophic Lake Sęczek, Masuria, Poland

An experimental study on the influence of the bloom-forming alga Gonyostomum semen (Raphidophyceae) on cladoceran species Daphnia magna

Collection of pure cultures of algae and cyanobacteria for research, teaching and biotechnological applications (Nature Research Centre, Lithuania)

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