Pseudocalanus

Pseudocalanus elongatus (Boeck) copepodites > 280 pm CVI female cf. globosa single cells and colonies incubation experiments Hansen (1992,1995)... 

Ban, S., Lee, H.-W., Shinada, A., and Toda, T. (2000). In situ egg production and hatching success of the marine copepod Pseudocalanus newmani in Funka Bay and adjacent waters off southwestern Hokkaido, Japan Associated to diatom bloom. J. Plankton Res. 22(5), 907-922. 

FIGURE 18.12 Predation pressure (C/P—sprat population consumption per copepod production) by sprat on the copepods Pseudocalanus acuspes (blackbars) and Temora longicornis (grey bars) data are from Mollmann and Koster, 2002. 

FIGURE 18.13 Scheme summarizing the processes leading to the present low cod/high sprat ecosystem in the central Baltic Sea grey arrows indicate salinity/oxygen-driven processes, hlack arrows indicate temperature-driven processes, dotted hlack arrows indicate a trophic cascade from cod to sprat and Pseudocalanus acuspes, F Fishery, C Cod, SPR Sprat, PS P. acuspes, AC Acartia spp. 

Mollmann, C., Kornilovs, G., Fetter, M., Koster, F. W., Hinrichsen, H.-H., 2003a. The marine copepod Pseudocalanus elongatus, as a mediator between climate variability and fisheries in the Central Baltic Sea. Fisheries Oceanography, 12, 360-368. 

Renz, J., Hirche, H.-J., 2006. Life-cycle of Pseudocalanus acuspes Giesbrecht (Copepoda, Calanoida) in the Central Baltic Sea 1. Seasonal and spatial distribution. Marine Biology, 148, 567-580. 

Griffiths, A.M. and Frost, B.W., 1976. Chemical communication in the marine planktonic copepods Calanuspacificus and Pseudocalanus sp. Crustaceana, 30 1—8. 

Poulet, S. A. Grazing of Pseudocalanus minutus on Naturally Occurring... 

One advantage of this rapid release of aromatic hydrocarbons accumulated from acute exposure would apply to exposure from spills and other acute events. If the event is only a few days in duration, it is highly probable that most of the accumulated aromatic hydrocarbons would be eliminated and or metabolized to low levels, depending on the species. For example, tissue concentrations of anthracene, fluoranthene, benzo[a]pyrene, and benz[a] anthracene in zooplankton (primarily Pseudocalanus minutus) were not persistent and declined to below detection concentrations (0.1 tg/g) during the 9 d after a pulse of oil was added to a mesocosm (Lee et al. 1978). Conversely, the chronic exposure seems to produce tissue burdens that are relatively stable, especially for the more hydrophobic of the PAHs. 

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