Detection of minute temperature transients by thermosensitive neurons in ants

Ruchty, Markus; Roces, Flavio; Kleineidam, Christoph

Detection of minute temperature transients by thermosensitive neurons in ants

Dateien

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Datum

2010

Autor:innen

Ruchty, Markus

Roces, Flavio

Kleineidam, Christoph

Open Access-Veröffentlichung

Open Access Green

Sammlungen

Biologie

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Journal of Neurophysiology. 2010, 104(3), pp. 1249-1256. ISSN 0022-3077. eISSN 1522-1598. Available under: doi: 10.1152/jn.00390.2010

Zusammenfassung

The antennae of leaf-cutting ants are equipped with sensilla coeloconica that house three receptor neurons, one of which is thermosensitive. Using convective heat (air at different temperatures), we investigated the physiological characteristics of the thermosensitive neuron associated with the sensilla coeloconica in the leaf-cutting ant Atta vollenweideri. The thermosensitive neuron very quickly responds to a drop in temperature with a brief phasic increase (50 ms) in spike rate and thus classifies as cold receptor (ambient temperature = 24°C). The short latency and the brief phasic response enable the thermosensitive neuron to follow temperature transients up to an estimated frequency of around 5 Hz. Although the neuron responds as a cold receptor, it is extremely sensitive to warm stimuli. A temperature increase of only 0.005°C already leads to a pronounced decrease in the resting activity of the thermosensitive neuron. Through sensory adaptation, the sensitivity to temperature transients is maintained over a wide range of ambient temperatures (18 30°C). We conclude that the thermosensitive neuron of the sensilla coeloconica is adapted to detect minute temperature transients, providing the ants with thermal information of their microenvironment, which they may use for orientation.

Fachgebiet (DDC)

570 Biowissenschaften, Biologie

Zitieren

ISO 690

RUCHTY, Markus, Flavio ROCES, Christoph KLEINEIDAM, 2010. Detection of minute temperature transients by thermosensitive neurons in ants. In: Journal of Neurophysiology. 2010, 104(3), pp. 1249-1256. ISSN 0022-3077. eISSN 1522-1598. Available under: doi: 10.1152/jn.00390.2010

BibTex

@article{Ruchty2010-09Detec-1173,
  year={2010},
  doi={10.1152/jn.00390.2010},
  title={Detection of minute temperature transients by thermosensitive neurons in ants},
  number={3},
  volume={104},
  issn={0022-3077},
  journal={Journal of Neurophysiology},
  pages={1249--1256},
  author={Ruchty, Markus and Roces, Flavio and Kleineidam, Christoph}
}

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Universitätsbibliographie

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