Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
THE PHOTOMECHANIC INFRARED RECEPTOR FOR THE DETECTION OF FOREST-FIRESIN THE BEETLE MELANOPHILA-ACUMINATA (COLEOPTERA, BUPRESTIDAE)
Autore:
SCHMITZ H; BLECKMANN H;
Indirizzi:
UNIV BONN,INST ZOOL,POPPELSDORFER SCHLOSS D-53115 BONN GERMANY
Titolo Testata:
Journal of comparative physiology. A, Sensory, neural, and behavioral physiology
fascicolo: 5, volume: 182, anno: 1998,
pagine: 647 - 657
SICI:
0340-7594(1998)182:5<647:TPIRFT>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
INSECT; TEMPERATURE;
Keywords:
INFRARED RECEPTOR; MECHANORECEPTOR; FIRE ECOLOGY; INSECT CUTICLE; PHOTOACOUSTICS; REMOTE SENSING;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
48
Recensione:
Indirizzi per estratti:
Citazione:
H. Schmitz e H. Bleckmann, "THE PHOTOMECHANIC INFRARED RECEPTOR FOR THE DETECTION OF FOREST-FIRESIN THE BEETLE MELANOPHILA-ACUMINATA (COLEOPTERA, BUPRESTIDAE)", Journal of comparative physiology. A, Sensory, neural, and behavioral physiology, 182(5), 1998, pp. 647-657

Abstract

We recorded from single units of individual sensilla of the thoracic infrared (IR) pit organs of Melanophila acuminata. When the organ was stimulated with a thermal radiator whose emission spectrum was similarto that of a typical forest fire, units responded phasically with up to seven spikes within 30-40 ms at a radiation power of 24 mW cm(-2). In the experiments all wavelengths shorter than 1.6 mu m were excludedby a longpass IR filter. Response latencies were about 4 ms and initial impulse frequencies were up to 250 impulses per second tips). A single spike could be generated even when stimulus duration was only 2 ms. Reduction of total radiation power from 24 mW cm(-2) to 5 mW cm(-2) resulted in increased response latencies of 5-6 ms and the occurrence of only two to three spikes. Initial impulse frequencies decreased to 125 ips. According to our physic,logical results and calculations, Melanophila should be able to detect a 10-hectare fire from a distance of12 km. Mechanical stimuli also evoked responses of the IK sensilla. All present morphological and physiological findings lead to the conclusion that the IR receptors of Melanophila must function by means of a hitherto undescribed photomechanic mechanism.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/09/20 alle ore 05:23:09