Morphological evolution in Tropidurinae squamates: an integrated view along a continuum of ecological settings

Autor(es)

Grizante, M. B. ^[1] ; Navas, C. A. ^[2] ; Garland, Jr., T. ^[3] ; Kohlsdorf, T. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, FFCLRP, Dept Biol, BR-14040901 Ribeirao Preto, SP - Brazil

^[2] Univ Sao Paulo, Dept Physiol, Biosci Inst, Sao Paulo - Brazil

^[3] Univ Calif Riverside, Dept Biol, Riverside, CA 92521 - USA

• Tipo de documento: Artigo de Revisão
• Fonte: JOURNAL OF EVOLUTIONARY BIOLOGY; v. 23, n. 1, p. 98-111, JAN 2010.
• Citações Web of Science: 22

Resumo

Variation in squamate foot morphology is likely relevant during evolutionary processes of habitat colonization because distinct surfaces differ in energetic and functional demands for locomotion. We combined new foot morphological data with published information of limb and tail lengths to investigate evolutionary changes possibly associated with the differential usage of ecological settings by Tropidurinae species. Several traits exhibited significant phylogenetic signal, and we performed conventional and phylogenetic regressions of PC scores (retained from Principal Components Analyses of morphometric traits) on continuous ecological indices. Tropidurines from sandy habitats exhibit larger foot soles, opposite to the evolution of narrow feet in species that use branches and rocks. Also, species that usually move along trunks present longer femora. This study provides evidence for morphological adaptations associated with substrate usage in Tropidurinae, and suggests that opposite morphological profiles might evolve associated with the use of surfaces energetically and functionally contrasting, possibly leading to trade-offs. (AU)

• Processo FAPESP: 05/60140-4 - Evolução de diversidade fenotípica em lagartos tropicais: uma abordagem integrativa investigando diversos níveis de organização
• Beneficiário: Tiana Kohlsdorf
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
• Processo FAPESP: 07/52204-8 - Relações evolutivas entre ecologia e morfologia serpentiforme em espécies de lagartos microteiídeos (Sauria, Gymnophtalmidae)
• Beneficiário: Mariana Bortoletto Grizante
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 03/01577-8 - Causas e correlações da variação fisiológica: papel dos gradientes ambientais e comportamentais em diferentes níveis de organização
• Beneficiário: Carlos Arturo Navas Iannini
• Modalidade de apoio: Auxílio à Pesquisa - Temático