Responses of antennal campaniform sensilla to rapid temperature changes in ground beetles of the tribe platynini with different habitat preferences and daily activity rhythms

Journal of Insect Physiology
Anne MustMikk Heidemaa

Abstract

Responses of temperature sensitive (cold) cells from the antenna of ground beetles (tribe Platynini) were compared in species with different ecological preferences and daily activity rhythms. Action potential rates were characterized at various temperatures (ranges 23-39 degrees C) and during rapid changes in it (Deltat=0.5-15 degrees C). The stationary firing frequencies were nearly twice as high in eurythermic open field ground beetles Agonum muelleri and Anchomenus dorsalis (firing rates ranging from 22 to 47imp/s) than in a stenothermic forest species Platynus assimilis. In the eurythermic species, the firing rate did not significantly depend on temperature (Anchomenus dorsalis range of 23-27 degrees C and Agonum muelleri range of 23-33 degrees C) but plots of firing rate versus temperature showed rapid declines when lethally high temperatures were approached. In contrast, a nearly linear decline of the firing rate/temperature curve was observed in Platynus assimilis. Responses to rapid temperature decreases were also considerably higher in eurythermic species. Both the peak frequency of the initial burst (maximum 420-650Hz) as well as the sustained discharge in the first 4s of the response were higher than in Platynus assi...Continue Reading

References

Sep 11, 2001·Journal of Comparative Physiology. A, Sensory, Neural, and Behavioral Physiology·E Gingl, H Tichy
Jan 5, 2002·Microscopy Research and Technique·E MeriveeV Sammelselg
Apr 27, 2002·Micron : the International Research and Review Journal for Microscopy·Enno MeriveeVäino Sammelselg
Oct 2, 2002·Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology·H Fischer, H Tichy

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Citations

Mar 1, 2012·Micron : the International Research and Review Journal for Microscopy·Andrea Di GiulioRoberto Romani
Dec 20, 2008·Arthropod Structure & Development·Markus RuchtyChristoph J Kleineidam
Feb 9, 2020·Biological Reviews of the Cambridge Philosophical Society·Daniel González-TokmanFabricio Villalobos
Mar 3, 2020·Frontiers in Behavioral Neuroscience·Enno MeriveeMarika Mänd

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