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  • Author or Editor: Daniel Marković x

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Daniel Markovic

Alleged incompatibility of Epicurus’ philosophy with rhetoric has led modern scholars to isolate rhetorical procedures in Lucretius’ De rerum natura and regard them as non-Epicurean, accessory features. This study of Lucretius’ rhetorical procedures is based on a wider understanding of the term rhetoric, not limited to the genre of oratory. In a fresh discussion of the questions of provenance and the role of the most important formal procedures of exposition in De rerum natura the author argues that instead of injecting rhetorical strategies from non-Epicurean sources, Lucretius in fact intensified rhetorical elements already present in the work of Epicurus. These elements are used for the purpose of explanation, and function as cognitive and mnemonic aids for the reader.

Daniel Muschiol, Walter Traunspurger, Mirjana Marković and Ilka Threis

Abstract

The potential of copepods as predators of free-living nematodes was tested by presenting Diacyclops bicuspidatus, a common holarctic cyclopoid copepod, with Panagrolaimus sp. as prey in the laboratory. Diacyclops bicuspidatus readily fed on nematodes of all size classes, including prey longer than itself. No size preference was observed. Handling times varied between a few seconds and several minutes, depending on the size of the prey. At different prey densities, the feeding rates of D. bicuspidatus followed a type II functional response. Starved D. bicuspidatus consumed up to 45.1 nematodes in 2 h, equivalent to 43.5% of the copepod's body mass. Indications that nematophagous nutrition is common among freshwater copepods are discussed.