Disease relevance of Zooplankton

• The mannose-sensitive hemagglutinin of Vibrio cholerae promotes adherence to zooplankton [1].
• The planktivores were fed zooplankton from a natural community that had been preexposed to cell-free extract or to purified toxin (nodularin) of the cyanobacterium Nodularia spumigena, and the growth, feeding, and pellet production of the planktivores, as well as the toxin content of the pellets, were measured [2].
• We examined maternal transfer efficiency, retention by subsequent generations, and transgenerational toxicity of methylmercury (CH3Hg or MeHg) in a population of freshwater zooplankton (Daphnia magna) [3].

High impact information on Zooplankton

• The North Atlantic Oscillation also affects the abundance of marine fish and zooplankton, but it is unclear whether this filters up trophic levels to long-lived marine top predators [4].
• We found that increasing algae reduced CH3Hg+ concentrations in zooplankton 2-3-fold [5].
• This observation provides a likely explanation for the ecological behavior of these organisms, which are known to associate themselves with chitinous (chitin:homopolymer of N-acetyl D-glucosamine) surfaces of zooplankton [6].
• Cercopagis pengoi, a recent invader to the Baltic Sea and the Laurentian Great Lakes, is a potential competitor with fish for zooplankton prey [7].
• The marine samples, especially parts of the clams, zooplankton and certain bottom sediments were found to contain primarily bisphenol A (BPA) at concentrations of 1-30 ng/g [8].

Biological context of Zooplankton

• Molecular genetic analysis of zooplankton has been slowed by the usual practice of preservation and storage of samples in dilute formalin solutions, which are not always adequately buffered for pH [9].
• PCB atropisomers were racemic in phytoplankton and zooplankton, suggesting no biotransformation potential toward PCBs for these low trophic level organisms [10].
• Comparing the results here to those from a previous study with tebufenozide, which was selectively toxic to cladocerans and had little effect on food web stability, indicates that differential sensitivity among taxa can influence the ecological significance of pesticide effects on zooplankton communities [11].
• Specifically, the effects of intensive fishing on: (1) total biomass and zooplankton size structure (>500, 200-500, 100-200 and 53-100 microm); (2) species composition; and (3) total mercury and methylmercury (MeHg) concentrations in zooplankton of different size fractions were studied [12].
• Preliminary observations on californium-252 behaviour in sea water, sediments and zooplankton [13].

Anatomical context of Zooplankton

• PCB accumulation mechanisms are discussed, considering the importance of direct contamination (adsorption onto the cell surfaces, absorption through the cell walls and partitioning into the cell lipids) for suspended matter and sediments, and of indirect contamination through the food for zooplankton [14].

Associations of Zooplankton with chemical compounds

• Associations of cyanobacterial toxin, nodularin, with environmental factors and zooplankton in the Baltic Sea [15].
• These data are the first for many of these zooplankton species and the first sterol data for most species [16].
• MtDNA sequencing from zooplankton after long-term preservation in buffered formalin [9].
• Damaging UV radiation and invertebrate predation: conflicting selective pressures for zooplankton vertical distribution in the water column of low DOC lakes [17].
• To address whether commonly used preservation techniques induce changes in stable isotope values, fresh lake zooplankton (control) were compared with preserved (ethanol, methanol, formaldehyde, gluteraldehyde, frozen and shock frozen) material [18].

Gene context of Zooplankton

• Four seabird species and their prey (zooplankton or fish) were collected in the Barents Sea to determine how dietary exposure, cytochrome P450 (CYP) enzyme activities and sex influenced their hepatic PCB concentrations and accumulation patterns [19].
• Persistent organic pollutants (POPs) in a small, herbivorous, arctic marine zooplankton (Calanus hyperboreus): trends from April to July and the influence of lipids and trophic transfer [20].
• The log bioaccumulation factors (BAFs) normalized to lipid or organic carbon were 5.8, 6.5, 6.3, 6.7, 6.7, and 7.0 for phytoplankton, net zooplankton, Mysis, Bythotrephes, sculpin, and lake trout [21].
• If the present high empirically derived bioaccumulation factors (log BAF 7.3-9.0) were realistic, this suggests that bioaccumulation in Arctic zooplankton is more efficient that previously assumed [22].
• Receptor-based STX equivalent values for all but the zooplankton samples were highly correlated and exhibited close quantitative agreement with those produced by HPLC [23].

Analytical, diagnostic and therapeutic context of Zooplankton

• In addition, transfer of formalin fixed shelled specimens, routinely used as marine bioassay organisms, into ethyl alcohol:acetic acid (3:1) fixative also yields clear cells for cytological examination of decalcified but otherwise intact oyster larvae and other zooplankton [24].

References