Encontrados 7 documentos, a visualizar página 1 de 1
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...
Feed Additives for Aquaculture and Aquarium Culture
Barata, Eduardo Nuno; Velez, ZéliaThe presente invention refers of feed additives for aquaculture and aquarium culture. These additives comprise the amino acid, 1-methyl-L-tryptophane, or its isomers with the objective of improving the attractiveness of feeds used in aquaculture and aquaria for fish, as well as other aquatic organisms, under culture conditions. Therefore, this invention has applications in the agriculture-food industry.
Aditivos Alimentares para Aquicultura e Aquaricultura e Respectiva Utilização
Barata, Eduardo NunoA presente invenção consiste em aditivos alimentares para aquicultura e aquaricultura. Estes aditivos compreendem, na sua composição um amino ácido, o metil-L-triptofano ou os seus isómeros, com o objectivo de melhorar a apetência dos alimentos utilizados em aquicultura e aquaricultura, tanto em peixes como em outros organismos aquáticos quando em cultura. Desta forma, o objectivo da presente invenção tem aplic...
26th Annual Meeting of the International Society of Chemical Ecology
Keller, Tina; Barata, Eduardo NunoThe Mozambique tilapia is a lek-breeding cichlid wherein males establish dominance hierarchies and visiting females mate preferentially with dominant territorial males. Dominant males increase urination frequency during courtship and aggression (1). A sulphated aminosterol urinary odorant for females has been suggested to act as pheromonal signal of dominance, thereby influencing female spawning (1). Here, we a...
13th International Behavioral Ecology Conferences
Barata, Eduardo Nuno; Leitão, AnaTemperament is usually described as a continuum, with "bold" and "shy" ends. As the former are described as more active and more prone to take risks, they are expected to have higher metabolic requirements and thus higher ventilatory rates, compared to the opposite extreme of "shy" temperament. In this study we aimed at determining the temperament types of a Mozambique tilapia (Oreochromis mossambicus) male pop...
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