Zooplankton feeding on size fractionated <i>Microcystis</i> colonies and <i>Chlorella</i> in a hypertrophic lake (Hartbeespoort Dam, South Africa): implications to resource utilization and zooplankton succession

Jarvis, Andrew C.; Hart, R. C.; Combrink, Susan

doi:10.1093/plankt/10.2.331

Cited by 40 publications

(33 citation statements)

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“…1 and 2) and it feeds on particles in the size range typical of montmorillonite (Hessen 198 5;DeMott 1986;Gliwicz 1986). Jarvis et al (1987) noted that Diaphanosoma tends to peak in abundance when the algal community becomes largely inedible, suggesting that these zooplankton are sustained by breakdown products from blue-green bacteria and possibly heterotrophic bacteria fueled by those products.…”

Section: Discussionmentioning

confidence: 99%

Type of suspended clay influences zooplankton response to phosphorus loading

Cuker

Hudson

1992

Limnology & Oceanography

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The effects on zooplankton community structure of P loading and two different kinds of suspended sediments were tested in a small lake. Limnocorrals were used in a complete, triplicated, sixtreatment-block design. Treatments were loading with P, kaolinitic clay (IQ, K+P, montmorillonitic clay (M), and M+P plus a control without additions. P fertilization caused blooms of blue-green bacteria and resulted in reductions of the dominant copepod (Diaptomus mississippiensis) and cladocerans (Diaphanosoma brachyurum, Bosmina longirostris, and Ceriodaphnia reticulata), while causing a 5-fold increase in rotifers (mostly Keratella cochlearis). Zooplankton in the K and K+P treatments were similar to the control, but cladoceran species other than Diaphanosoma were reduced. M was more detrimental to zooplankton than K, causing a lo-fold decrease for all crustaceans. We attribute this in part to lower algal densities in the A4 treatment. Simultaneous P loading mitigated the effects of M on Diaphanosoma, rotifers, and copepods and may involve a transfer loop in which dissolved organic C adsorbed on clay becomes available to filter-feeding zooplankton. The effects of mineral turbidity apparently cascaded up the food chain, with both kinds of clays reducing densities of Chaoborus larvae.

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Section: Discussionmentioning

confidence: 99%

Type of suspended clay influences zooplankton response to phosphorus loading

Cuker

Hudson

1992

Limnology & Oceanography

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“…In natural waters, declines in populations of large Daphnia are sometimes associated with cyanobacterial blooms (Edmondson and Litt 1982;Infante and Abella 1985;Jarvis et al 1987) indicating that cyanobacteria may affect interspecies competition in zooplankton. The varying responses of different species may result from both differential physiological sensitivity and behavioral responses such as feeding behavior (DeMott et al 199 1).…”

Section: Stichmentioning

confidence: 99%

Effects of the concentrations of toxic Microcystis aeruginosa and an alternative food on the survival of Daphnia pulex

Reinikainen

Ketola

Walls

1994

Limnology & Oceanography

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We investigated the effect of the cyanobacterium Microcystis aeruginosa (strain PCC7820) on the survival of juvenile and adult Daphnia pulex (Cladocera) in different food concentrations (the green alga Scenedesmus obtusiusculus). M. aeruginosa reduced survival in D. pulex. The peptide toxin microcystin‐LR is present in this strain of M. aeruginosa. The toxic effect decreased with increasing concentrations of S. obtusiusculus. Juvenile D. pulex generally died faster than adults at high concentrations of cyanobacteria. However, juvenile D. pulex did better than adults at the lowest concentration of S. obtusiusculus.

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“…Why dietary assimilation rate of copepoda in manipulated pond was increased than reference pond even though zooplankton had a pressure by aquatic organisms? The cyanobacteria are inedible prey size, mostly colonial or filamentous, for most species of zooplankton, and only small colonies or dispersed cells of cyanobacteria can be ingested (Jarvis et al, 1987). For this reason, it is generally assumed that aquatic organisms may induce shortened breakage cells of larger filaments of cyanobacteria species through the feeding process, allowing the later consumption of cyanobacteria by zooplankton species.…”

Section: Influence On Zooplankton (Copepod) Feeding Process Through Bmentioning

confidence: 99%

Bio-Control of Microcystis Aeruginosa Bloom Using Various Aquatic Organisms by Dual Stable Isotope (13c and 15n) Tracers

Kim¹

2018

Appl. Ecol. Env. Res.

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Abstract. The application of 13 C and 15 N labeled phytoplankton makes it possible to directly follow the pathway and transfer of food source (cyanobacteria) into consumers (aquatic organisms), in contrast to past studies where only changes in compositions of chlorophyll-a, clearity, and nutrients were taken as the evidence for these processes. To evaluate the effect of biocontrol by aquatic organisms (aquatic plants; Iris pseudoacorus, filter feeder bivalve; Sinanodonta arcaeformis, and Unio douglasiae, macroinvertebrate; Caridina denticulate, carnivore fish; Pseudobagrus fulvidraco, Odontobutis platycephala, planktivore fish; Pseudorasbora parv, and omnivore fish; Misgurmus anguillicaudatus) on large toxigenic cyanobacteria bloom (Microcystis aeruginosa) in the freshwater ecosystem, we conducted a biomanipulation test on in situ ponds using dual stable isotope tracers ( 13 C and 15 N). As a filter feeding bivalve, S. arcaeformis could incorporate more toxic cyanobacteria cells than U. douglasiae, demonstrating its larger detoxification capacity. Also, macroinvertebrate (C. denticulate) continuously assimilated to cyanobacteria species in combination with zooplankton and detritus, probably due to detoxification capacity. Indeed, the aquatic plants (I. pseudoacorus) seem to be nutrient uptakes in water column and inhibit to light attenuation, comparing to cyanobacteria species. As a primary consumer of phytoplankton, zooplankton (Copepoda) consumed to small and edible particles which is changed from inedible toxic filamentous cyanobacteria species through the grazing efficiency by aquatic organisms. However, various kinds of fishes hardly feed on toxic cyanobacteria directly. Our result suggests that the native species, like Sinanodonta sp. and C. denticulate, are very useful bio-control organisms on toxic cyanobacteria bloom rather than carnivore, omnivore and planktivore fish. Furthermore, if an aquatic plant that can not only remove nutrients but also provide habitats to aquatic organisms (zooplankton, bivalves and shrimps) is developed, it can help control toxic cyanobacteria blooms. Therefore, it is considered that the development and establishment of habitat of useful organisms is very necessary for water quality improvement. Our biomanipulation technique may provide a key tool for efficient management and restoration of eutrophied reservoirs.

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Zooplankton feeding on size fractionated Microcystis colonies and Chlorella in a hypertrophic lake (Hartbeespoort Dam, South Africa): implications to resource utilization and zooplankton succession

Cited by 40 publications

References 0 publications

Type of suspended clay influences zooplankton response to phosphorus loading

Type of suspended clay influences zooplankton response to phosphorus loading

Effects of the concentrations of toxic Microcystis aeruginosa and an alternative food on the survival of Daphnia pulex

Bio-Control of Microcystis Aeruginosa Bloom Using Various Aquatic Organisms by Dual Stable Isotope (13c and 15n) Tracers

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