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A multi-component pheromone in the urine of dominant male tilapia (Oreochromis ...
Keller-Costa, Tina; Saraiva, João L.; Hubbard, Peter; Barata, Eduardo Nuno; Canário, Adelino V. M.Males often use scent to communicate their dominance, and to mediate aggressive and breeding behaviors. In teleost fish, however, the chemical composition of male pheromones is poorly understood. Male Mozambique tilapia, Oreochromis mossambicus, use urine that signals social status and primes females to spawn. The urinary sex pheromone directed at females consists of 5 beta-pregnane-3 alpha,17 alpha,20 beta-tri...
Social odors conveying dominance and reproductive information induce rapid phys...
Simões, José Miguel; Barata, Eduardo Nuno; Harris, Rayna M.; O'Connell, Lauren A.; Hofmann, Hans A.Background: Social plasticity is a pervasive feature of animal behavior. Animals adjust the expression of their social behavior to the daily changes in social life and to transitions between life-history stages, and this ability has an impact in their Darwinian fitness. This behavioral plasticity may be achieved either by rewiring or by biochemically switching nodes of the neural network underlying social behav...
Social odors conveying dominance and reproductive information induce rapid phys...
Simões, José M.; Barata, Eduardo Nuno; Harris, Rayna M.; O'Connell, Lauren A.; Hofmann, Hans A.; Oliveira, Rui F.Background: Social plasticity is a pervasive feature of animal behavior. Animals adjust the expression of their social behavior to the daily changes in social life and to transitions between life-history stages, and this ability has an impact in their Darwinian fitness. This behavioral plasticity may be achieved either by rewiring or by biochemically switching nodes of the neural network underlying social behav...
The effect of pair bonding in Cabrera vole’s scent marking
Gomes, Luis; Salgado, Pedro; Barata, Eduardo Nuno; Mira, AntónioThe Cabrera vole (Microtus cabrerae) is a rare rodent living in patchy grassy areas of the Iberian Peninsula where unpaired individuals of both sexes use scent marking primarily to increase their mate-finding likelihood. Cabrera voles establish long-term pair bonds with opposite-sex conspecifics constituting a breeding pair, which is expected to reduce the efforts in searching for a new mate. Under such circums...
Alarm scent-marking during predatory attempts in the Cabrera vole (Microtus cab...
Gomes, Luis; Salgado, Pedro; Barata, Eduardo Nuno; Mira, AntónioThe alarm pheromones often released by animals under stressful situations seem to elicit behavioral changes in conspecifics, which in the appropriate context can be viewed as anti-predatory responses. However, the releasing of alarm pheromones associated with predatory events has not been demonstrated in mammals. In the current study with wild-caught Cabrera voles, we carried out experiments in the laboratory a...
The Role of Scent-marking in Patchy and Highly Fragmented Populations of the Ca...
Gomes, Luis; Mira, António; Barata, Eduardo NunoRodent scent-marking is often used for territorial defense and self-advertisement, and both functions often entail the continuous scent-marking of a large area with high costs. In species with highly-fragmented populations and low density, in which the likelihood of social encounters is low,the costs of continuous scent-marking might exceed the associated fitness benefits; therefore, less intensive scent-markin...
The role of scent-marking in patchy and highly fragmented populations of the Ca...
Piteira Gomes, Luis Alexandre; Mira, António; Barata, Eduardo NunoRodent scent-marking is often used for territorial defence and self-advertisement, and both functions often entail the continuous scent-marking of a large area with high costs. In species with highly-fragmented populations and low density, in which the likelihood of social encounters is low, the costs of continuous scent-marking might exceed the associated fitness benefits; therefore, less intensive scent-marki...
Alarm scent-marking during predatory attempts in the Cabrera vole (Microtus cab...
Pereira Gomes, Luis Alexandre; Pedreirinho Salgado, Pedro Miguel; Mira, António; Barata, Eduardo NunoThe alarm pheromones often released by animals under stressful situations seem to elicit behavioral changes in conspecifics, which in the appropriate context can be viewed as anti-predatory responses. However, the releasing of alarm pheromones associated with predatory events has not been demonstrated in mammals. In the current study with wild-caught Cabrera voles, we carried out experiments in the laboratory a...
The effect of pair bonding in Cabrera vole’s scent marking
Piteira Gomes, Luis Alexandre; Pedreirinho Salgado, Pedro Miguel; Barata, Eduardo Nuno; Mira, AntónioThe Cabrera vole (Microtus cabrerae) is a rare rodent living in patchy grassy areas of the Iberian Peninsula where unpaired individuals of both sexes use scent marking primarily to increase their mate-finding likelihood. Cabrera voles establish long-term pair bonds with opposite-sex conspecifics constituting a breeding pair, which is expected to reduce the efforts in searching for a new mate. Under such circums...
The effect of nest aggregation on the reproductive behaviour of the peacock ble...
Saraiva, João Luis Vargas de Almeida; Barata, Eduardo Nuno; Canário, Adelino V. M.; Oliveira, Rui FilipeThe effect of nest aggregation in courtship behaviour was tested experimentally in an ecologically constrained, sex-role reversed population of the peacock blenny Salaria pavo. Mixed sex groups of eight males and eight females were tested in experimental tanks, containing eight potential nests either aggregated or dispersed. In the aggregated treatment, males spent more time inside their nests and monopolized o...