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Sex differences in social buffering and social contagion of alarm responses in ...
Akinrinade, Ibukun; Varela, Susana.A.M.; Oliveira, Rui FilipeThe alarm substance in fsh is a pheromone released by injured individuals after a predator attack. When detected by other fsh, it triggers fear/defensive responses, such as freezing and erratic movement behaviours. Such responses can also help other fsh in the shoal to modulate their own behaviours: decreasing a fear response if conspecifcs have not detected the alarm substance (social bufering) or triggering a...
Unexpected appetitive events promote positive affective state in juvenile Europ...
Alvarado, M. V.; Felip, A.; Espigares, F.; Oliveira, Rui FilipeSome animal species exhibit considerable physiological and behavioural alterations in response to captivity. It has been hypothesized, but rarely tested, that such changes reflect a negative affective state that is associated to this specific context. In the last years, judgement bias measures have emerged as reliable indicators of animal affective state, under the assumption that individuals in a negative affe...
Pessimistic cognitive bias is associated with enhanced reproductive investment ...
Espigares, Felipe; Alvarado, Maria V.; Faísca, Pedro; Abad-Tortosa, Diana; Oliveira, Rui FilipeOptimistic and pessimistic cognitive biases have been described in many animals and are related to the perceived valence of the environment. We, therefore, hypothesize that such cognitive bias can be adaptive depending on environmental conditions. In reward-rich environments, an optimistic bias would be favoured, whereas in harsh environments, a pessimistic one would thrive. Here, we empirically investigated th...
Differential effects of food restriction and warming in the two-spotted goby: I...
Lopes, Ana F.; Murdoch, Robyn; Cardoso, Sara D.; Madeira, Carolina; Costa, Pedro M.; Félix, Ana Sofia; Oliveira, Rui Filipe; Bandarra, NarcisaClimate change is a growing threat to marine organisms and ecosystems, and it is already modifying ocean properties by, for example, increasing temperature and decreasing pH. Increasing water temperature may also lead to an impairment of primary productivity and an overall depletion of available zooplankton. Understanding how the crossover between warming and zooplankton availability impacts fish populations ha...
Phenotypic architecture of sociality and its associated genetic polymorphisms i...
Gonçalves, Claúdia; Kareklas, Kyriacos; Teles, Magda C; Varela, Susana.A.M.; Costa, João; Leite, Ricardo B.; Paixão, Tiago; Oliveira, Rui FilipeSociality relies on motivational and cognitive components that may have evolved independently, or may have been linked by phenotypic correlations driven by a shared selective pressure for increased social competence. Furthermore, these components may be domain-specific or of general-domain across social and non-social contexts. Here, we used zebrafish to test if the motivational and cognitive components of soci...
Early social deprivation shapes neuronal programming of the social decision‐mak...
Antunes, Diogo; Teles, Magda C.; Zuellig, Matthew; Friesen, Caitlin N.; Oliveira, Rui Filipe; Aubin‐Horth, Nadia; Taborsky, BarbaraThe early social environment an animal experiences may have pervasive effects on its behaviour. The social decision-making network (SDMN), consisting of interconnected brain nuclei from the forebrain and midbrain, is involved in the regulation of behaviours during social interactions. In species with advanced sociality such as cooperative breeders, offspring are exposed to a large number and a great diversity o...
Perceptual mechanisms of social affiliation in zebrafish
Nunes, Ana Rita; Carreira, Leonor; Anbalagan, Savani; Blechman, Janna; Levkowitz, Gil; Oliveira, Rui FilipeSocial living animals need to recognize the presence of conspecifics in the environment in order to engage in adaptive social interactions. Social cues can be detected through different sensory modalities, including vision. Two main visual features can convey information about the presence of conspecifics: body form and biological motion (BM). Given the role that oxytocin plays in social behavior regulation acr...
Brain morphology predicts social intelligence in wild cleaner fish
Triki, Zegni; Emery, Yasmin; Teles, Magda C; Oliveira, Rui Filipe; Bshary, RedouanIt is generally agreed that variation in social and/or environmental complexity yields variation in selective pressures on brain anatomy, where more complex brains should yield increased intelligence. While these insights are based on many evolutionary studies, it remains unclear how ecology impacts brain plasticity and subsequently cognitive performance within a species. Here, we show that in wild cleaner fish...
Genetic variation in the social environment affects behavioral phenotypes of ox...
Ribeiro, Diogo; Nunes, Ana Rita; Teles, Magda C; Anbalagan, Savani; Blechman, Janna; Levkowitz, Gil; Oliveira, Rui FilipeOxytocin-like peptides have been implicated in the regulation of a wide range of social behaviors across taxa. On the other hand, the social environment, which is composed of conspecifics that may vary in their genotypes, also influences social behavior, creating the possibility for indirect genetic effects. Here, we used a zebrafish oxytocin receptor knockout line to investigate how the genotypic composition o...
Rising to the challenge? Inter-individual variation of the androgen response to...
Félix, Ana Sofia; Roleira, António; Oliveira, Rui FilipeThe Challenge Hypothesis (Wingfield et al. Am. Nat. 136, 829-846) aims to explain the complex relationship between androgens and social interactions. Despite its well acceptance in the behavioral endocrinology literature, several studies have failed to found an androgen response to staged social interactions. Possible reasons for these inconsistencies are the use of single sampling points that may miss the resp...