The effect of sixty-cycle AC current on the regeneration axis ofDugesia

✍ Scribed by Marsh, Gordon

• Publisher: John Wiley and Sons
• Year: 1968
• Tongue: English
• Weight: 414 KB
• Volume: 169
• Category: Article
• ISSN: 0022-104X
• DOI: 10.1002/jez.1401690109

✦ Synopsis

Dugesia dorotocephala and D. tigrina were sectioned transversely, imbedded in agar, and exposed to alternating current in a rectangular chamber. At field strengths of from 310 to 418.4 rms mv/mm potential fall, functional bipolar, regressive bipolar and permanent bipolar regenerants were produced. No regenerants showed reversal of polarity. The similarity in field strength for the three groups was primarily due to the extreme motility of imbedded pieces. The results were independent of absolute healing time and duration of exposure to the field, and of body level of regenerate origin. No significant differences were found between the species with respect to mortality or response to the AC field, AC field action is non-polar, but its direction must coincide with the regenerant axis to be effective. The field operates to reduce the normal antero-posterior polarity.