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Sensing of Substrate Vibrations in the Adult Cicada Okanagana rimosa (Hemiptera: Cicadidae)

Alt, Joscha A. ; Lakes-Harlan, Reinhard


Originalveröffentlichung: (2018) Journal of Insect Science 18(3):16 doi: 10.1093/jisesa/iey029
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URN: urn:nbn:de:hebis:26-opus-145726
URL: http://geb.uni-giessen.de/geb/volltexte/2019/14572/

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Freie Schlagwörter (Englisch): vibration detection , neuroanatomy , scolopidial organ , neurobiology , Hemiptera
Sammlung: Open Access - Publikationsfonds
Universität Justus-Liebig-Universität Gießen
Institut: Institute for Animal Physiology
Fachgebiet: Biologie
DDC-Sachgruppe: Biowissenschaften, Biologie
Dokumentart: Aufsatz
Sprache: Englisch
Erstellungsjahr: 2018
Publikationsdatum: 15.05.2019
Kurzfassung auf Englisch: Detection of substrate vibrations is an evolutionarily old sensory modality and is important for predator detection as well as for intraspecific communication. In insects, substrate vibrations are detected mainly by scolopidial (chordotonal) sense organs found at different sites in the legs. Among these sense organs, the tibial subgenual organ (SGO) is one of the most sensitive sensors. The neuroanatomy and physiology of vibratory sense organs of cicadas is not well known. Here, we investigated the leg nerve by neuronal tracing and summed nerve recordings. Tracing with Neurobiotin revealed that the cicada Okanagana rimosa (Say) (Hemiptera: Cicadidae) has a femoral chordotonal organ with about 20 sensory cells and a tibial SGO with two sensory cells. Recordings from the leg nerve show that the vibrational response is broadly tuned with a threshold of about 1 m/s2 and a minimum latency of about 6 ms. The vibratory sense of cicadas might be used in predator avoidance and intraspecific communication, although no tuning to the peak frequency of the calling song (9 kHz) could be found.
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