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Influence of Daphnia infochemicals on functional traits of Microcystis strains (Cyanobacteria)

(2009) HYDROBIOLOGIA. 635(1). p.147-155
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Abstract
We conducted a laboratory experiment to investigate the influence of Daphnia infochemicals on growth rate, microcystin production, colony formation and cell size of eight Microcystis strains isolated from two lakes. The strains were characterized genetically by their 16S-23S rDNA ITS sequence. The experiment was composed of four treatments: (1) a control using filtered WC medium, (2) addition of Scenedesmus obliquus culture medium filtrate, (3) addition of Daphnia magna culture medium filtrate and (4) addition of sodium octyl sulphate, a commercially available Daphnia infochemical. Our results showed that sympatric strains differed strongly for the measured functional traits, while no correlations between traits were found. Between-strain differences in growth rate, microcystin production, colony formation and cell size were generally larger than the differences in phenotypes observed between treatments. Despite this, several strains reacted to the infochemicals by changing functional trait values. Daphnia culture medium filtrate and, to a lesser extent, sodium octyl sulphate had a negative influence on the growth rate of half of the strains and stimulated microcystin production in one strain, but the latter effect was not Daphnia-specific as Scenedesmus culture medium filtrate had the same effect. Daphnia culture medium filtrate also induced colony formation in one strain. Our data suggest that Daphnia infochemicals generally have a weak influence on growth rate, microcystin production and colony formation of Microcystis strains as compared to the inter-strain variability, while existing inducible effects are highly strain-specific.
Keywords
Microcystis, CULTURE-MEDIA FILTRATE, Microcystins, Infochemicals, Functional traits, Colony formation, Daphnia, WATER, VARIABILITY, ZOOPLANKTON, AERUGINOSA, NATURAL-POPULATIONS, SCENEDESMUS-OBLIQUUS, COLONY FORMATION, TOXIN PRODUCTION, MORPHOLOGICAL-CHANGES

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Chicago
van Gremberghe, Ineke, Pieter Vanormelingen, Katleen Van Der Gucht, Antoniya Mancheva, Sofie D’hondt, Luc Demeester, and Wim Vyverman. 2009. “Influence of Daphnia Infochemicals on Functional Traits of Microcystis Strains (Cyanobacteria).” Hydrobiologia 635 (1): 147–155.
APA
van Gremberghe, I., Vanormelingen, P., Van Der Gucht, K., Mancheva, A., D’hondt, S., Demeester, L., & Vyverman, W. (2009). Influence of Daphnia infochemicals on functional traits of Microcystis strains (Cyanobacteria). HYDROBIOLOGIA, 635(1), 147–155.
Vancouver
1.
van Gremberghe I, Vanormelingen P, Van Der Gucht K, Mancheva A, D’hondt S, Demeester L, et al. Influence of Daphnia infochemicals on functional traits of Microcystis strains (Cyanobacteria). HYDROBIOLOGIA. 2009;635(1):147–55.
MLA
van Gremberghe, Ineke, Pieter Vanormelingen, Katleen Van Der Gucht, et al. “Influence of Daphnia Infochemicals on Functional Traits of Microcystis Strains (Cyanobacteria).” HYDROBIOLOGIA 635.1 (2009): 147–155. Print.
@article{839907,
  abstract     = {We conducted a laboratory experiment to investigate the influence of Daphnia infochemicals on growth rate, microcystin production, colony formation and cell size of eight Microcystis strains isolated from two lakes. The strains were characterized genetically by their 16S-23S rDNA ITS sequence. The experiment was composed of four treatments: (1) a control using filtered WC medium, (2) addition of Scenedesmus obliquus culture medium filtrate, (3) addition of Daphnia magna culture medium filtrate and (4) addition of sodium octyl sulphate, a commercially available Daphnia infochemical. Our results showed that sympatric strains differed strongly for the measured functional traits, while no correlations between traits were found. Between-strain differences in growth rate, microcystin production, colony formation and cell size were generally larger than the differences in phenotypes observed between treatments. Despite this, several strains reacted to the infochemicals by changing functional trait values. Daphnia culture medium filtrate and, to a lesser extent, sodium octyl sulphate had a negative influence on the growth rate of half of the strains and stimulated microcystin production in one strain, but the latter effect was not Daphnia-specific as Scenedesmus culture medium filtrate had the same effect. Daphnia culture medium filtrate also induced colony formation in one strain. Our data suggest that Daphnia infochemicals generally have a weak influence on growth rate, microcystin production and colony formation of Microcystis strains as compared to the inter-strain variability, while existing inducible effects are highly strain-specific.},
  author       = {van Gremberghe, Ineke and Vanormelingen, Pieter and Van Der Gucht, Katleen and Mancheva, Antoniya and D'hondt, Sofie and Demeester, Luc  and Vyverman, Wim},
  issn         = {0018-8158},
  journal      = {HYDROBIOLOGIA},
  keyword      = {Microcystis,CULTURE-MEDIA FILTRATE,Microcystins,Infochemicals,Functional traits,Colony formation,Daphnia,WATER,VARIABILITY,ZOOPLANKTON,AERUGINOSA,NATURAL-POPULATIONS,SCENEDESMUS-OBLIQUUS,COLONY FORMATION,TOXIN PRODUCTION,MORPHOLOGICAL-CHANGES},
  language     = {eng},
  number       = {1},
  pages        = {147--155},
  title        = {Influence of Daphnia infochemicals on functional traits of Microcystis strains (Cyanobacteria)},
  url          = {http://dx.doi.org/10.1007/s10750-009-9907-5},
  volume       = {635},
  year         = {2009},
}

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