Study of the ability of Daphnia carinata King to control phytoplankton and resist cyanobacterial toxicity: Implications for biomanipulation in Australia

Matveev, Vladimir; Matveeva, Lilian K.; Jones, GJ

doi:10.1071/mf9940889

Cited by 66 publications

(73 citation statements)

References 40 publications

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“…Others found differences in survival and growth among species and clones fed with microcystin-containing Microcystis cells (7,13,15). At least one paper reported an apparent resistance to microcystins (29). However, the observed differences in response to microcystins contained in solutions or cyanobacterial cells can have various causes.…”

Section: Discussionmentioning

confidence: 99%

“…Based on survival tests with cyanobacterial cells and cell extracts, Jungmann (20) and Reinikainen (34) have, on the other hand, suggested that toxicity to Daphnia is not due to microcystins. Matveev et al (29) have even proposed an ineffectiveness of microcystins to harm Daphnia carinata, and Pflugmacher et al (33) have described an in vitro detoxification mechanism that, if also active in living Daphnia, may result in a resistance to microcystins.…”

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confidence: 99%

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Effects of Cell-Bound Microcystins on Survival and Feeding of Daphnia spp

Rohrlack

Dittmann

Börner

et al. 2001

Appl Environ Microbiol

166

119

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The influence of cell-bound microcystins on the survival time and feeding rates of six Daphnia clones belonging to five common species was studied. To do this, the effects of the microcystin-producing Microcystis strain PCC7806 and its mutant, which has been genetically engineered to knock out microcystin synthesis, were compared. Additionally, the relationship between microcystin ingestion rate by the Daphnia clones and Daphnia survival time was analyzed. Microcystins ingested with Microcystis cells were poisonous to all Daphnia clones tested. The median survival time of the animals was closely correlated to their microcystin ingestion rate. It was therefore suggested that differences in survival among Daphnia clones were due to variations in microcystin intake rather than due to differences in susceptibility to the toxins. The correlation between median survival time and microcystin ingestion rate could be described by a reciprocal power function. Feeding experiments showed that, independent of the occurrence of microcystins, cells of wild-type PCC7806 and its mutant are able to inhibit the feeding activity of Daphnia. Both variants of PCC7806 were thus ingested at low rates. In summary, our findings strongly suggest that (i) sensitivity to the toxic effect of cell-bound microcystins is typical for Daphnia spp., (ii) Daphnia spp. and clones may have a comparable sensitivity to microcystins ingested with food particles, (iii) Daphnia spp. may be unable to distinguish between microcystin-producing and -lacking cells, and (iv) the strength of the toxic effect can be predicted from the microcystin ingestion rate of the animals.

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Effects of Cell-Bound Microcystins on Survival and Feeding of Daphnia spp

Rohrlack

Dittmann

Börner

et al. 2001

Appl Environ Microbiol

166

119

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“…Likewise, copepods have been shown to be poor grazers of Nodularia (Sellner 1997), and in the Baltic Sea they appear to actively avoid consuming toxic cyanobacteria (Karjalainen et al 2007). Cladocerans, such as Daphnia spp., tend to be more generalist grazers than copepods (Boon et al 1994), and it is these that are often implicated in the reduction of toxic cyanobacteria (Matveev et al 1994). Even so, different members of the Daphnia genus have been shown to either enhance or reduce cyanobacterial growth (Fey & Cottingham 2011), and it cannot be assumed that the presence of cladocerans would lead to a reduction in Nodularia.…”

Section: Grazingmentioning

confidence: 99%

Environmental controls on the nitrogen-fixing cyanobacterium Nodularia spumigena in a temperate lagoon system in SE Australia

Holland¹,

Erp²,

Beardall³

et al. 2012

Mar. Ecol. Prog. Ser.

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Estuarine blooms of N 2 -fixing cyanobacteria are rare, and the factors controlling them remain poorly understood outside the Baltic Sea. We measured in situ physico-chemical conditions and undertook nutrient-addition bioassays and dilution-based grazing experiments fortnightly over the 2010 to 2011 Austral spring-summer-autumn, to evaluate the role of physical environmental drivers, grazing and macronutrients on the growth of Nodularia spumigena Mertens (hereafter Nodularia) in a temperate lagoon system (Gippsland Lakes, Australia). Nodularia appeared in late summer, following a period of warm weather (water temperature > 22°C), high solar exposure, calm conditions, relatively low salinity (< 22) and low dissolved inorganic nitrogen (~0.4 µmol l ) in control bioassays (no nutrients added), whereas other phytoplankton taxa showed zero or negative growth. N addition caused significantly lower Nodularia growth, while other taxa had higher growth. P addition did not significantly enhance Nodularia growth. This suggests Nodularia was able to obtain P from the water column and from phytoplankton breakdown. A reduction in grazing pressure via dilution led to lower growth rates of Nodularia and higher growth rates of other phytoplankton taxa. This suggests that the grazers selectively consumed taxa other than Nodularia, and that grazing positively influences Nodularia growth in this system. These data indicate that Nodularia growth was limited in situ by physical conditions (primarily solar radiation) and that nutrients and grazing were of second order importance. KEY WORDS: Nodularia spumigena · Nutrient limitation · Grazing · BioassayResale or republication not permitted without written consent of the publisher

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“…3) may have implications for toxicity toward grazing zooplankton. Since some daphnids, though notably not all (18), are sensitive to toxic strains of M. aeruginosa (28), it is conceivable that zooplankton could ingest a greater number of smaller Microcystis spp. cells, thus receiving a considerably larger dose of toxin.…”

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confidence: 99%

Cellular Microcystin Content in N-Limited Microcystis aeruginosa Can Be Predicted from Growth Rate

Long

Jones

Orr

2001

Appl Environ Microbiol

276

194

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Cell quotas of microcystin (Q MCYST ; femtomoles of MCYST per cell), protein, and chlorophyll a (Chl a), cell dry weight, and cell volume were measured over a range of growth rates in N-limited chemostat cultures of the toxic cyanobacterium Microcystis aeruginosa MASH 01-A19. There was a positive linear relationship between Q MCYST and specific growth rate (), from which we propose a generalized model that enables Q MCYST at any nutrient-limited growth rate to be predicted based on a single batch culture experiment. The model predicts Q MCYST from , max (maximum specific growth rate), Q MCYSTmax (maximum cell quota), and Q MCYSTmin (minimum cell quota). Under the conditions examined in this study, we predict a Q MCYSTmax of 0.129 fmol cell ؊1 at max and a Q MCYSTmin of 0.050 fmol cell ؊1 at ‫؍‬ 0. Net MCYST production rate (R MCYST ) asymptotes to zero at ‫؍‬ 0 and reaches a maximum of 0.155 fmol cell The microcystins (MCYSTs) are a group of cyclic heptapeptide toxins produced by several cyanobacterial species. Of the more than 60 MCYSTs characterized to date (19,27,29), most are potent inhibitors of protein phosphatases 1 and 2A from both plants and animals (17). One of the most common MCYST-producing cyanobacteria is the bloom-forming Microcystis aeruginosa (Kützing) Lemmermann. Due to the widespread distribution and potential toxicity of this species (toxic strains have been found worldwide), M. aeruginosa has been implicated in a number of animal-poisoning incidents (e.g., reference 7) and more recently in human fatalities (11,23).M. aeruginosa is a unicellular, colonial freshwater cyanobacterium which often forms blooms during warmer months in eutrophic lakes and reservoirs (37). For this reason, much research has been concerned with the environmental factors which lead to bloom formation and toxin production in this species. A wide range of batch culture studies have shown that the variables influencing MCYST content include trace metal supply (15), nitrogen (N) and phosphorus (P) (31), light and temperature (38), and pH (34). Comparative studies on MCYST production by M. aeruginosa in continuous culture, however, have been limited to examination of the effects of photon irradiance (35), N, P, and Fe 3ϩ limitation (16, 36), and more recently P limitation (20). Despite this considerable pool of data concerning MCYST production, few studies (with the exception of the work carried out by Rapala and coworkers [25,26]) have been able to quantitatively relate MCYST content to any growth determinant.In a previous batch culture study, we presented data on the effect of N supply on the cellular production of MCYSTs (21). This work showed that the net specific rate of MCYST production was equal to the cell specific growth rate. The application of these findings to previously published batch culture studies suggested that the relationship held under a variety of culture conditions and that MCYST production was indirectly affected by environmental factors through their effects on cell division. A consequence of this l...

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Study of the ability of Daphnia carinata King to control phytoplankton and resist cyanobacterial toxicity: Implications for biomanipulation in Australia

Cited by 66 publications

References 40 publications

Effects of Cell-Bound Microcystins on Survival and Feeding of Daphnia spp

Effects of Cell-Bound Microcystins on Survival and Feeding of Daphnia spp

Environmental controls on the nitrogen-fixing cyanobacterium Nodularia spumigena in a temperate lagoon system in SE Australia

Cellular Microcystin Content in N-Limited Microcystis aeruginosa Can Be Predicted from Growth Rate

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