Feeding experiments and examination of gut contents show that Neomysis mercedis is an effective predator on zooplankton in Lake Washington. Daphnia is consistently preferred to other prey; Diaptomus and Cyclops copepodids and nauplii are always underrepresented in mysid diets. This pattern of selectivity is consistent with the hypothesis that a large population of Neomysis formerly excluded Dap...

background: artemia urmiana are small crustaceans that because of its non-selective filter feeder pattern potentially may absorb high level of heavy metals through their living environment. in this study, the effects of different levels of cadmium and copper on survival, catalase activity and metals bioconcentration rates in a. urmiana nauplii have been investigated. methods: the research was c...

This paper reports an effective and easy method to culture the ctenophore Bolinopsis mikado. Fifteen adult B. mikado individuals were maintained in a kreisel tank, fertilized eggs, which detected following days, all raised together same tank. From early development stage day 13, cydippid larvae only fed Artemia nauplii. The able easily catch nauplii excreted by mikado; therefore, they considere...

Mesozooplankton abundance and species composition in the upper 200 m at seven sites in Lützow-Holm Bay, Antarctica, were compared using plankton nets with 60, 100 or 330 mm mesh during the austral summer of 2007–2008. While the collection efficiency of the 330 mm mesh was low, ranging from 2.0 to 5.6%, owing to the significant underestimation of small copepod species, no significant underestima...