Shift from slow- to fast-water habitats accelerates lineage and phenotype evolution in a clade of Neotropical suckermouth catfishes (Loricariidae: Hypoptopomatinae)

Autor(es)

Roxo, Fabio F. ; Lujan, Nathan K. ; Tagliacollo, Victor A. ; Waltz, Brandon T. ; Silva, Gabriel S. C. ; Oliveira, Claudio ; Albert, James S.

• Tipo de documento: Artigo Científico
• Fonte: PLoS One; v. 12, n. 6 JUN 7 2017.
• Citações Web of Science: 9

Resumo

Identifying habitat characteristics that accelerate organismal evolution is essential to understanding both the origins of life on Earth and the ecosystem properties that are most critical to maintaining life into the future. Searching for these characteristics on a large scale has only recently become possible via advances in phylogenetic reconstruction, time-calibration, and comparative analyses. In this study, we combine these tools with habitat and phenotype data for 105 species in a clade of Neotropical suckermouth catfishes commonly known as cascudinhos. Our goal was to determine whether riverine mesohabitats defined by different flow rates (i.e., pools vs. rapids) and substrates (plants vs. rocks) have affected rates of cascudinho cladogenesis and morphological diversification. In contrast to predictions based on general theory related to life in fast-flowing, rocky riverine habitats, Neoplecostomini lineages associated with these habitats exhibited increased body size, head shape diversity, and lineage and phenotype diversification rates. These findings are consistent with a growing understanding of river rapids as incubators of biological diversification and specialization. They also highlight the urgent need to conserve rapids habitats throughout the major rivers of the world. (AU)

• Processo FAPESP: 12/01622-2 - Analise das relações dos membros da tribo Ancistrini (Siluriformes: Loricariidae) com base em sequências de DNA
• Beneficiário: Gabriel de Souza da Costa e Silva
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 15/00691-9 - Usando métodos comparativos filogenômicos para entender a diversificação dos peixes da superfamília Loricarioidea
• Beneficiário: Fábio Fernandes Roxo
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Pós-Doutorado
• Processo FAPESP: 14/05051-5 - Usando métodos comparativos filogenômicos para entender a diversificação dos peixes da superfamília Loricarioidea
• Beneficiário: Fábio Fernandes Roxo
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado