Data/hora: 02/06/2024 13:59:28

Provedor de dados: | 72
País: | Chile
Título: | Eye orbit geometric shape in Liolaemus as an indicator of polygyny or monogamy
Autores: | Vidal Maldonado,Marcela. A.
Data: | 2011-01-01
Ano: | 2011
Palavras-chave: | Geometric morphometrics; Liolaemus copiapoensis; Liolaemus tenuis; Social behavior.
Resumo: | Most animal groups have sexual dimorphism in morphological characters, especially body size. In many cases, sexual dimorphism may be a consequence of a hierarchical social organization within populations. However, polygyny or monogamy may evolve independently of sexual dimorphism. Two Liolaemus species are known to be good model species to study the relationship between sexual dimorphism and sexual social system: Liolaemus tenuis (polygyny) and Liolaemus copiapoensis (monogamy). In this study, I evaluate the morphological variation in the geometric shape of the orbit between sexes in the two species, comparing their social condition (polygyny, monogamy) and applying a geometric morphometrical methodology. The results show morphological differentiation in orbit shape, suggesting potentially adaptative characters associated with social condition. There are variety of possible causes which could explain these differences (e.g., multiple origins of the social system in Liolaemus), which could provide new perspectives; however, the generalized lack of knowledge of social systems in Liolaemus species imposes barriers to new studies on the subject.
Tipo: | Journal article
Idioma: | Inglês
Identificador: | http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382011000200004
Editor: | Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción
Formato: | text/html
Fonte: | Gayana (Concepción)  v.75 n.2 2011