Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
THE LUNG-EARDRUM PATHWAY IN 3 TREEFROG AND 4 DENDROBATID FROG SPECIES- SOME PROPERTIES OF SOUND-TRANSMISSION
Autore:
EHRET G; KEILWERTH E; KAMADA T;
Indirizzi:
UNIV ULM,VERGLEICHENDE NEUROBIOL ABT D-89069 ULM GERMANY HOKKAIDO UNIV,SCH DENT,DEPT ORAL PHYSIOL SAPPORO HOKKAIDO 060 JAPAN
Titolo Testata:
Journal of Experimental Biology
, volume: 195, anno: 1994,
pagine: 329 - 343
SICI:
0022-0949(1994)195:<329:TLPI3T>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
MATING CALL RECOGNITION; DIRECTIONAL HEARING; ELEUTHERODACTYLUS-COQUI; BARKING TREEFROG; HYLA-CINEREA; LOCALIZATION; BIOPHYSICS; VIBRATIONS; ANURANS; SYSTEMS;
Keywords:
AMPHIBIAN HEARING; AUDITORY PERIPHERY; LUNG-EARDRUM PATHWAY; TYMPANUM VIBRATION; FROGS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
30
Recensione:
Indirizzi per estratti:
Citazione:
G. Ehret et al., "THE LUNG-EARDRUM PATHWAY IN 3 TREEFROG AND 4 DENDROBATID FROG SPECIES- SOME PROPERTIES OF SOUND-TRANSMISSION", Journal of Experimental Biology, 195, 1994, pp. 329-343

Abstract

Frequency-response curves of the tympanum and lateral body wall (lungarea) were measured by laser Doppler vibrometry in three treefrog (Smilisca baudini, Hyla cinerea, Osteopilus septentrionalis) and four dendrobatid frog (Dendrobates tinctorius, D. histrionicus, Epipedobates tricolor, E. azureiventris) species. The high-frequency cutoff of the body wall response was always lower than that of the tympanum. The bestresponse frequencies of the lateral body wall were lower than those of the tympanum in some species (S. baudini, O. septentrionnlis, D. tinctorins): while in the others they were rather similar. Best tympanic frequencies and best body wall response frequencies tended to differ more with increasing body size. Stimulation of the tympanum by sound transfer through 3.14 mm(2) areas of the lateral body wall showed that the lung-eardrum pathway can be in two states, depending on breathing activity within the lungs: 44% (in Smilisca), 39% (in Hyla) and 31% (inOsteopilus) of the eardrum vibrations were 2.5-8 times (8-18 dB) larger when the frogs were breathing with the lungs compared with non-breathing conditions. The vibration amplitudes of the tympanum and lateralbody wall of the treefrogs followed the same dependence on sound intensity, only absolute amplitudes differed between species. Our results suggest that the lung-eardrum pathway attenuates high-frequency components of species-specific calls and enhances low-frequency components. In addition, an amplitude modulation is imposed on the low frequenciesduring the rhythm of breathing.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 04/12/20 alle ore 19:41:57