Italian wolf howls are described for the first time from observations between 2003–2008 of a population living in eastern Tuscany, central Italy. A sample of 37 howls selected among single responses and 128 howls included in the choruses of 7 free ranging packs was recorded and analysed. The mean fundamental frequency of the howls ranged between 274–908 Hz. Two main structures recognised by means of multivariate explorative analysis, in particular Principal Component and Cluster Analysis, were ascribed to breaking and flat howls. Discriminant Function Analysis was applied to the recognised groups with the aim to find a general rule for classification. Howls with different features were correctly assigned to the groups obtained by explorative analysis in 95.8% of cases. The analysis of the variables characterising the structure of the howls suggests that maximum frequency and range of fundamental frequency are the most important parameters for classification, while duration does not appear to play any significant role.

The acoustic structure of wolf howls in some eastern Tuscany (Central Italy) free ranging packs / D. PASSILONGO; A. BUCCIANTI; F. DESSI-FULGHERI; A. GAZZOLA; M. ZACCARONI; M. APOLLONIO. - In: BIOACOUSTICS. - ISSN 0952-4622. - STAMPA. - 19(2010), pp. 159-175.

The acoustic structure of wolf howls in some eastern Tuscany (Central Italy) free ranging packs

BUCCIANTI, ANTONELLA;DESSI' FULGHERI, FRANCESCO;ZACCARONI, MARCO;
2010

Abstract

Italian wolf howls are described for the first time from observations between 2003–2008 of a population living in eastern Tuscany, central Italy. A sample of 37 howls selected among single responses and 128 howls included in the choruses of 7 free ranging packs was recorded and analysed. The mean fundamental frequency of the howls ranged between 274–908 Hz. Two main structures recognised by means of multivariate explorative analysis, in particular Principal Component and Cluster Analysis, were ascribed to breaking and flat howls. Discriminant Function Analysis was applied to the recognised groups with the aim to find a general rule for classification. Howls with different features were correctly assigned to the groups obtained by explorative analysis in 95.8% of cases. The analysis of the variables characterising the structure of the howls suggests that maximum frequency and range of fundamental frequency are the most important parameters for classification, while duration does not appear to play any significant role.
19
159
175
D. PASSILONGO; A. BUCCIANTI; F. DESSI-FULGHERI; A. GAZZOLA; M. ZACCARONI; M. APOLLONIO
File in questo prodotto:
File Dimensione Formato  
Passilongo Zac 2010.pdf

accesso aperto

Tipologia: Versione finale referata (Postprint, Accepted manuscript)
Licenza: Open Access
Dimensione 450.56 kB
Formato Adobe PDF
450.56 kB Adobe PDF Visualizza/Apri

I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2158/392852
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 19
  • ???jsp.display-item.citation.isi??? 17
social impact