Data/hora: 10/06/2024 13:51:09

Provedor de dados: 	42	
País: 	Brazil	
Título: 	Acoustic evolution in crickets: need for phylogenetic study and a reappraisal of signal effectiveness	
Autores: 	Desutter-Grandcolas,Laure; Robillard,Tony.	
Data: 	2004-06-01	
Ano: 	2004	
Palavras-chave: 	Acoustic communication; Evolution; Phylogeny; Calling song effectiveness; Crickets.	
Resumo: 	Cricket stridulums and calls are highly stereotyped, except those with greatly modified tegmina and/or vena-tion, or ''unusual'' frequency, duration and/or intensity. This acoustic diversity remained unsuspected until recently, and current models of acoustic evolution in crickets erroneously consider this clade homogeneous for acoustic features. The few phylogenetic studies analyzing acoustic evolution in crickets demonstrated that acoustic behavior could be particularly labile in some clades. The ensuing pattern for cricket evolution is consequently extremely complex. We argue that: (1) phylogeny should always be considered when analyzing acoustic evolution, whatever characters are considered (signals, stridulums or behaviors). Consequently, future studies should be devoted to entire clades, and not consider isolated taxa; character and character state definitions should allow significant reconstructions of character evolutionary transformations; and homologies should be carefully defined for all characters, including behavior. (2) The factors responsible for song effectiveness should be reconsidered and hypotheses on their potential influence on signal evolution tested jointly by phylogenies (for example, to assess correlated transformations of acoustic and ecological features), and population studies (for example, to correlate call range and population structure, or test the predation risk associated with a signal structure). Better understanding these points should help clarifying acoustic evolution in crickets.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652004000200019	
Editor: 	Academia Brasileira de Ciências	
Relação: 	10.1590/S0001-37652004000200019	
Formato: 	text/html	
Fonte: 	Anais da Academia Brasileira de Ciências  v.76 n.2 2004	
Fonte: 	info:eu-repo/semantics/openAccess