Taís M. Nazareth was born in Poços de Caldas, Minas Gerais, Brazil. She completed a B.Sc. in Biology at the Pontifícia Universidade Católica de Campinas (PUCCamp) in 2004. Between 2004 and 2005, she studied the mating system of the harvestman Pseudopucrolia sp. and tested the hypothesis of the paternal care evolution for her master's degree dissertation, developed at Universidade Federal de Uberlândia (UFU). For the harvestman Pseudopucrolia sp., all predictions of this hypothesis were supported. She demonstrated with experimental manipulations that the paternal care in Pseudopucrolia, guarding males are more attractive to females than non-guarding males, which indicates that the presence of eggs is an important indicator of male quality. She also demonstrated that non-guarding males accept to guard clutches from guarding males when these last ones were experimentally removed. In her Ph.D. she will study the reproductive ecology of the harvestman Neosadocus maximus focusing in the maternal care and in the strategies of mating of the males. More specifically she will test the costs and benefits of the temporary desertion of the clutches by the guardian females; describe how the size of males affects their reproductive success and quantify the contribution of territorial males for the paternity of eggs.