Regenerative and reproductive capacities of the fissiparous planarian Dugesia tahitiensis
R Peter - Biology of Turbellaria and some Related Flatworms …, 1995 - Springer
R Peter
Biology of Turbellaria and some Related Flatworms: Proceedings of the Seventh …, 1995•SpringerA pilot study was performed to assess the regenerative capacities of Dugesia tahitiensis
Gourbault, 1977, an exclusively fissiparous planarian species. Animals measuring 9.5–12.5
mm in length were used. Head regeneration rate determined by the appearance of eye
spots (Brøndsted, 1969: 29–46) was extremely high: at 23° C, it took 43–59 h to regenerate
clearly discernible eye spots in 28 specimens. For comparison, 3.8 days were reported for
the regeneration of eye spots in 11.9–12.7 mm long D. tigrina (Girard) at 24° C (Mead …
Gourbault, 1977, an exclusively fissiparous planarian species. Animals measuring 9.5–12.5
mm in length were used. Head regeneration rate determined by the appearance of eye
spots (Brøndsted, 1969: 29–46) was extremely high: at 23° C, it took 43–59 h to regenerate
clearly discernible eye spots in 28 specimens. For comparison, 3.8 days were reported for
the regeneration of eye spots in 11.9–12.7 mm long D. tigrina (Girard) at 24° C (Mead …
Abstract
A pilot study was performed to assess the regenerative capacities of Dugesia tahitiensis Gourbault, 1977, an exclusively fissiparous planarian species. Animals measuring 9.5–12.5 mm in length were used. Head regeneration rate determined by the appearance of eye spots (Brøndsted, 1969: 29–46) was extremely high: at 23 °C, it took 43–59 h to regenerate clearly discernible eye spots in 28 specimens. For comparison, 3.8 days were reported for the regeneration of eye spots in 11.9–12.7 mm long D. tigrina (Girard) at 24 °C (Mead, 1985). As all posterior fragments regenerated a head, irrespective of the cutting level, D. tahitiensis seems to match the Phagocata velata (Stinger) type with a head frequency of 100% at every level (Teshirogi et al., 1977; cf. also Brøndsted, 1969:30).
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