title: Carbon dioxide detection in adult Odonata.
abstract: The present paper shows, by means of single-cell recordings, responses of antennal sensory neurons of the damselfly Ischnura elegans when stimulated by air streams at different CO2 concentrations. Unlike most insects, but similarly to termites, centipedes and ticks, Odonata possess sensory neurons strongly inhibited by CO2, with the magnitude of the off-response depending upon the CO2 concentration. The Odonata antennal sensory neurons responding to CO2 are also sensitive to airborne odors; in particular, the impulse frequency is increased by isoamylamine and decreased by heptanoic and pentanoic acid. Further behavioral investigations are necessary to assign a biological role to carbon dioxide detection in Odonata.
authors.affiliation: Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, Via Elce di Sotto, 06123 Perugia, Italy. Electronic address: silvana.piersanti@unipg.it.
authors.forename: Silvana
authors.initials: S
authors.lastname: Piersanti
authors.affiliation: Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Borgo XX Giugno, 74, 06121 Perugia, Italy.
authors.forename: Francesca
authors.initials: F
authors.lastname: Frati
authors.affiliation: Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, Via Elce di Sotto, 06123 Perugia, Italy.
authors.forename: Manuela
authors.initials: M
authors.lastname: Rebora
authors.affiliation: Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università degli Studi di Perugia, Borgo XX Giugno, 74, 06121 Perugia, Italy.
authors.forename: Gianandrea
authors.initials: G
authors.lastname: Salerno
mesh_terms: D000588:Amines / Q000494:pharmacology; D000818:Animals; D057506:Arthropod Antennae / Q000166:cytology / Q000502:physiology; D002245:Carbon Dioxide / Q000378:metabolism* / Q000494:pharmacology; D002264:Carboxylic Acids / Q000494:pharmacology; D063191:Odonata / Q000187:drug effects / Q000502:physiology*; D011984:Sensory Receptor Cells / Q000187:drug effects / Q000502:physiology
chemical_list: D000588:Amines; D002264:Carboxylic Acids; D002245:Carbon Dioxide
keywords: Antennal sensory neurons; Damselflies; Ischnura elegans; Olfaction; Zygoptera