Polygonum punctatum (Polygonaceae) is an herb known in some regions of Brazil as "erva-de-bicho" and is used to treat intestinal disorders. The dichloromethane extract of the aerial parts of this plant showed strong activity in a bioautographic assay with the fungus Cladosporium sphaerospermum. The bioassay-guided chemical fractionation of this extract afforded the sesquiterpene dialdehyde poly...

Photosymbiotic ascidian fauna were surveyed in the subtidal zone off Pari Island in the Thousand Islands (Java Sea, Indonesia). Nine species were recorded: Didemnum molle, Trididemnum miniatum, Lissoclinum patella, L. punctatum, L. timorense, Diplosoma gumavirens, D. simile, D. simileguwa, and D. virens. All of these species have been previously recorded in the Ryukyu Archipelago, Japan. Diplos...

Abramowitz, A. A., "Regeneration of Chromatophore Nerves," Proc. Nat. Acad. Sci., 21, 137-141 (1935). Mills, S. M., "The Double Innervation of Fish Melanophores," Jour. Exp. Zool., 64, 231-244 (1932). Smith, D. C., "The Action of Certain Autonomic Drugs upon the Pigmentary Responses of Fundulus," Ibid., 58, 423-453 (1931). Wyman, L. C., "Blood and Nerve as Controlling Agents in the Movements of...

The hearing thresholds of the horn shark Heterodontus francisci and the white-spotted bamboo shark Chiloscyllium plagiosum were measured using auditory evoked potentials (AEP) in response to a dipole sound stimulus. The audiograms were similar between the two species with lower frequencies yielding lower particle acceleration thresholds. The particle acceleration audiograms showed more sensitiv...