Banca de QUALIFICAÇÃO: FELIPE EDUARDO ALVES COELHO

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : FELIPE EDUARDO ALVES COELHO
DATE: 30/11/2020
TIME: 14:00
LOCAL: Remota (google meet)
TITLE:

The effects of the interplay between climatic and geological historical changes in the diversification and ecology of Neotropical water frogs from Lithobates palmipes species group (Ranidae)

KEY WORDS:

Biogeography. Phylogeography. Neotropics. Ranidae. Climatic niche

PAGES: 90
BIG AREA: Ciências Biológicas
AREA: Ecologia
SUMMARY:

Understand which factors caused species diversification is fundamental to know the history of life on Earth. The neotropics is one the richest regions and much remains to be known about the processes underlying diversification in this region. Central and South America formation was marked by dramatic geological and climatic changes, such as Panama Isthmus formation, uplift of Talamanca and Andean mountain range, recurrent glaciation cycles and ocean level changes. In this study, we tested the effects of geological and climatic changes on amphibian from Ranidae Family diversification in neotropics. In chapter 1, we tested if allopatric speciation due to geological changes, or ecological speciation due to new environments, played a main role in Lithobates palmipes group diversification. Using ancestral range estimative and phyloclimatic analysis, we found that L. palmipes group diversification is related to dispersal to new areas followed by climatic niche divergence, suggesting the prevalence of ecological speciation. In chapter 2, we tested the effects of the connections between Atlantic and Amazon forest on L. palmipes genetic diversity through phylogeographyc analysis. In addition, using ecological niche modeling, we assessed the existence of current suitable areas connecting biomes.  Despite its disjunct distribution, L. palmipes is composed of a single species with two mitochondrial lineages, one at Amazon forest and the other Amazon and Atlantic forest. Currently, there is no suitable areas connecting biomes that could be used as a dispersal route. Based on neotropical amphibians from L. palmipes group, there is no general rule for diversification in neotropics, and it was caused by the interplay between historical climatic and geological changes.

BANKING MEMBERS:
Presidente - 1678338 - ADRIAN ANTONIO GARDA
Externo à Instituição - MARCELO COELHO MIGUEL GEHARA - rutgers
Interna - 3058386 - VANESSA GRAZIELE STAGGEMEIER