Christiane Paul

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Annelida, the ringed worms, is a highly diverse animal phylum that includes more than 15,000 described species and constitutes the dominant benthic macrofauna from the intertidal zone down to the deep sea. A robust annelid phylogeny would shape our understanding of animal body-plan evolution and shed light on the bilaterian ground pattern. Traditionally,(More)
The electric organ (EO) of weakly electric mormyrids consists of flat, disk-shaped electrocytes with distinct anterior and posterior faces. There are multiple species-characteristic patterns in the geometry of the electrocytes and their innervation. To further correlate electric organ discharge (EOD) with EO anatomy, we examined four species of the mormyrid(More)
African weakly-electric fishes (Mormyridae) are able to communicate through species-specific electric signals; this feature might have favoured the evolutionary radiation observed in this family (over 200 species) by acting as an effective pre-zygotic isolation mechanism. In the present study we used mitochondrial (cytb) and nuclear (rps7, scn4aa) markers(More)
Voltage-gated sodium channels, Nav1, play a crucial role in the generation and propagation of action potentials and substantially contribute to the shape of their rising phase. The electric organ discharge (EOD) of African weakly electric fish (Mormyroidea) is the sum of action potentials fired from all electrocytes of the electric organ at the same time(More)
Reproduction in captivity of four species of the mormyrid genus Campylomormyrus was investigated. Cyclical reproduction was provoked by changing water conductivity (C) alone: decreasing C led to gonadal recrudescence, an increase induced gonad regression. Data on the reproduction and development of three species are presented. All three species are(More)
For better or worse, only a few Happenings resembled Hansen’s “Hall Street Happening” in its obliteration of the tangible, objective difference between aesthetic and ordinary events, artist and spectator. This slippage is one reason why Allan Kaprow abandoned happenings less than a decade after theorizing them in the mid-1950s. Even though the aims he(More)
This paper proposes a set of ideas behind physical<lb>interfaces that provide us with the ability to express<lb>abstract concepts in the hybrid of virtual and physical<lb>worlds. It considers the types of communication that<lb>may arise as a result from the linking of body and<lb>mind, and it debates the use of stimulus in the com-<lb>munication with other(More)
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