The comparison of mechanically stimulated and spontaneous firings in traps of aquatic carnivorous Utricularia species

0357575 - BÚ 2011 RIV NL eng J - Journal Article
Adamec, Lubomír
The comparison of mechanically stimulated and spontaneous firings in traps of aquatic carnivorous Utricularia species.
Aquatic Botany. Roč. 94, č. 1 (2011), s. 44-49. ISSN 0304-3770. E-ISSN 1879-1522
Institutional research plan: CEZ:AV0Z60050516
Keywords : Utricularia * trap * water pumping
Subject RIV: EF - Botanics
Impact factor: 1.516, year: 2011

Utricularia trap thickness was used as a measure of water flow and was monitored automatically using an electronic position sensor. Isolated traps from three aquatic Utricularia species were monitored over the course of 1-2 days to verify spontaneous firings (without any mechanical stimulation) and describe their basic characteristics. Isolated traps of three Utricularia species were initially fired by mechanical stimulation and allowed to naturally reset within a period of 24-48 h. Within this resting period, spontaneous firings were found in the traps of all species and in two trap age categories of U. vulgaris. The timing of spontaneous firings was found to be irregular. Spontaneous firings ranged between 0.29-2.4 during the 24-h resting period and the mean time between two spontaneous firings was highly variable within each species (319-891 min).
Permanent Link: http://hdl.handle.net/11104/0195820