Comparative phylogeography in the Atlantic forest and Brazilian savannas: pleistocene fluctuations and dispersal shape spatial patterns in two bumblebees

Autor(es)

Francoso, Elaine ; Zuntini, Alexandre Rizzo ; Carnaval, Ana Carolina ; Arias, Maria Cristina

• Tipo de documento: Artigo Científico
• Fonte: BMC Evolutionary Biology; v. 16, DEC 7 2016.
• Citações Web of Science: 6

Resumo

Background: Bombus morio and B. pauloensis are sympatric widespread bumblebee species that occupy two major Brazilian biomes, the Atlantic forest and the savannas of the Cerrado. Differences in dispersion capacity, which is greater in B. morio, likely influence their phylogeographic patterns. This study asks which processes best explain the patterns of genetic variation observed in B. morio and B. pauloensis, shedding light on the phenomena that shaped the range of local populations and the spatial distribution of intra-specific lineages. Results: Results suggest that Pleistocene climatic oscillations directly influenced the population structure of both species. Correlative species distribution models predict that the warmer conditions of the Last Interglacial contributed to population contraction, while demographic expansion happened during the Last Glacial Maximum. These results are consistent with physiological data suggesting that bumblebees are well adapted to colder conditions. Intra-specific mitochondrial genealogies are not congruent between the two species, which may be explained by their documented differences in dispersal ability. Conclusions: While populations of the high-dispersal B. morio are morphologically and genetically homogeneous across the species range, B. pauloensis encompasses multiple (three) mitochondrial lineages, and show clear genetic, geographic, and morphological differences. Because the lineages of B. pauloensis are currently exposed to distinct climatic conditions (and elevations), parapatric diversification may occur within this taxon. The eastern portion of the state of Sao Paulo, the most urbanized area in Brazil, represents the center of genetic diversity for B. pauloensis. (AU)

• Processo FAPESP: 10/20548-2 - Filogeografia de Bombus morio e Bombus pauloensis (Hymenoptera: Apidae)
• Beneficiário: Elaine Aparecida Françoso
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 13/50297-0 - Dimensions US-BIOTA São Paulo: integrando disciplinas para a predição da biodiversidade da Floresta Atlântica no Brasil
• Beneficiário: Cristina Yumi Miyaki
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOTA - Temático
• Processo FAPESP: 09/07124-1 - Filogeografia de Bombus morio e Bombus atratus (Hymenoptera: Apidae)
• Beneficiário: Elaine Aparecida Françoso
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 13/03961-1 - Filogeografia comparada e conservação de Bombus morio e Bombus pauloensis (Hymenoptera: Apidae)
• Beneficiário: Elaine Aparecida Françoso
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado Direto
• Processo FAPESP: 10/50597-5 - Estudos populacionais e evolutivos em abelhas
• Beneficiário: Maria Cristina Arias
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 13/12530-4 - Estudos populacionais, evolutivos e genômicos em abelhas
• Beneficiário: Maria Cristina Arias
• Modalidade de apoio: Auxílio à Pesquisa - Regular