Bibliography and Index of the Sirenia and Desmostylia  

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"Dehnhardt, Guido"

Dehnhardt, Guido: SEE Bachteler & Dehnhardt, 1998, 1999. (detail)
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 Bachteler, Daniel; Dehnhardt, Guido (detail)
   
1998
Tactile sensitivity of facial vibrissae in the Antillean manatee. [Abstr.]
Zoology: Analysis of Complex Systems 101 (Suppl. 1): 44.
–Abstr. of Bachteler & Dehnhardt, 1999. Experiments on a captive manatee showed that the spatial resolving power of the vibrissae is lower than in pinnipeds but very close to that of Asian elephants.
x
 
 Bachteler, Daniel; Dehnhardt, Guido (detail)
   
1999
Active touch performance in the Antillean manatee: evidence for a functional differentiation of facial tactile hairs.
Zoology: Analysis of Complex Systems 102(1): 61-69. 5 figs.
–Abstr.: Bachteler & Dehnhardt, 1998. In texture discrimination experiments, a juvenile T. m. manatus at Nuremberg was able to distinguish as little as a 14% difference in width of grooves 2-10 mm wide. The lips, perioral bristles, and bristle-like hairs of the oral disc were all used in exploring the stimuli, but only the last were used for touching after acquisition of the stimuli. The tactile resolving power of the bristle-like hairs is lower than that of pinnipeds, but compares well with that of the trunk of Asian elephants.
Daryl P. Domning, Research Associate, Department of Paleobiology, National Museum of Natural History, Smithsonian Institution, Washington, D.C. 20560, and Laboratory of Evolutionary Biology, Department of Anatomy, College of Medicine, Howard University, Washington, D.C. 20059.
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