Hey, I am looking for references on the use of behavioral characters in phylogenies (theoretical and practical), unfortunately I found only a few! Suggestions???? Thanks, Cristiano Moreira Museu de Zoologia Universidade de São Paulo Seção de Peixes Cx. Postal 42694 CEP 04299-970 São Paulo - SP - BRASIL TEL/FAX 55 11 274-3455