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Figure 2 | Frontiers in Zoology

Figure 2

From: Neuroactive substances specifically modulate rhythmic body contractions in the nerveless metazoon Tethya wilhelma (Demospongiae, Porifera)

Figure 2

Contraction patterns of Tethya wilhelma during extracorporeal acetylcholine and nicotine application (a - b): Projected area of two specimens of T. wilhelma before and during application (grey background) of acetylcholine (a) and nicotine (b) respectively. Neither of the two substances induced contraction. See additional file 1 (Movie_S1.mov) for the time-lapse movie of Fig. 2b. Filled arrowheads indicate the points in time when stock solutions of the substances were injected into the experimental reactor circulation system to reach final concentrations of 40 μM, 592 μM and 2.8 mM for acetylcholine and 25 μM and 50 μM for nicotine.

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Frontiers in Zoology

ISSN: 1742-9994