14 documents found, page 1 of 2
Agonistic interactions elicit rapid changes in brain nonapeptide levels in zebr...
Teles, Magda; Gozdowska, Magdalena; Kalamarz-Kubiak, Hanna; Kulczykowska, Ewa; Oliveira, Rui FilipeThe teleost fish nonapeptides, arginine vasotocin (AVT) and isotocin (IT), have been implicated in the regulation of social behavior. These peptides are expected to be involved in acute and transient changes in social context, in order to be efficient in modulating the expression of social behavior according to changes in the social environment. Here we tested the hypothesis that short-term social interactions ...
Assessment of fight outcome is needed to activate socially driven transcription...
Oliveira, Rui Filipe; Simões, José Miguel; Teles, Magda; Oliveira, Catarina R.; Becker, Jorg D.; Lopes, João SollariGroup living animals must be able to express different behavior profiles depending on their social status. Therefore, the same genotype may translate into different behavioral phenotypes through socially driven differential gene expression. However, how social information is translated into a neurogenomic response and what are the specific cues in a social interaction that signal a change in social status are q...
Quantifying aggressive behavior in zebrafish
Teles, Magda; Oliveira, Rui FilipeAggression is a complex behavior that influences social relationships and can be seen as adaptive or maladaptive depending on the context and intensity of expression. A model organism suitable for genetic dissection of the underlying neural mechanisms of aggressive behavior is still needed. Zebrafish has already proven to be a powerful vertebrate model organism for the study of normal and pathological brain fun...
Androgen response to social competition in a shoaling fish
Teles, Magda; Oliveira, Rui FilipeAndrogens respond to social challenges and this response has been interpreted as a way for males to adjust androgen-dependent behavior to social context. However, the androgen responsiveness to social challenges varies across species and a conceptual framework has been developed to explain this variation according to differences in the mating system and parental care type, which determines the regimen of challe...
Neurogenomic mechanisms of social plasticity
Cardoso, Sara D.; Teles, Magda; Oliveira, Rui FilipeGroup-living animals must adjust the expression of their social behaviour to changes in their social environment and to transitions between life-history stages, and this social plasticity can be seen as an adaptive trait that can be under positive selection when changes in the environment outpace the rate of genetic evolutionary change. Here, we propose a conceptual framework for understanding the neuromolecula...
Social interactions elicit rapid shifts in functional connectivity in the socia...
Teles, Magda; Almeida, Olinda; Lopes, João Sollari; Oliveira, Rui FilipeAccording to the social decision-making (SDM) network hypothesis, SDM is encoded in a network of forebrain and midbrain structures in a distributed and dynamic fashion, such that the expression of a given social behaviour is better reflected by the overall profile of activation across the different loci rather than by the activity of a single node. This proposal has the implicit assumption that SDM relies on in...
Social modulation of brain monoamine levels in zebrafish
Teles, Magda; Dahlbom, S. Josefin; Winberg, Svante; Oliveira, Rui FilipeIn social species animals tend to adjust their social behaviour according to the available social information in the group, in order to optimize and improve their one social status. This changing environment requires for rapid and transient behavioural changes that relies primarily on biochemical switching of existing neural networks. Monoamines and neuropeptides are the two major candidates to mediate these ch...
Iniciação à Adição através da ludicidade
Farias, Ana; Teles, Magda; Dias, Guida; Lopes, PauloThe following article describes the development of a pedagogical proposition, through the use of recreation in the educational process of mathematics, with the objective of favoring the understanding of some mathematical concepts by the preschool children. Using the theme “introduction to addition through recreation”, practical activities were developed with a group of children with ages between 5 and 6. The co...
A three-dimensional stereotaxic MRI brain atlas of the cichlid fish oreochromis...
Simões, José Miguel; Teles, Magda; Oliveira, Rui Filipe; Van der Linden, Annemie; Verhoye, MarleenThe African cichlid Oreochromis mossambicus (Mozambique tilapia) has been used as a model system in a wide range of behavioural and neurobiological studies. The increasing number of genetic tools available for this species, together with the emerging interest in its use for neurobiological studies, increased the need for an accurate hodological mapping of the tilapia brain to supplement the available histologic...
Adult neurogenesis in a new model specie, the cichlid fish Oreochromis mossambicus
Teles, MagdaEm comparação com outros vertebrados, os peixes teleósteos têm um enorme potencial para produzir células novas no cérebro de animais adultos. Em contraste com os mamíferos, onde o processo de neurogénese adulta encontra-se restrito a duas áreas cerebrais, a zona subventricular (SVZ) e a zona subgranular parte do giro dentado do hipocampo, em peixes teleósteos foram descritas mais de 10 regiões neurogénicas. Atr...