The population of Costa Rica has been considered historically as the product of the amalgamation of three ethnic groups: Europeans, Africans and Amerindians. In addition, it has been said that this population is highly ...

Se identificó Aphelencoides besseyi como responsable del amachamiento del frijol

We tested whether pharmacological impairment of OF-habituation after the administration (i.p.) of scopolamine (SCP; muscarinic antagonist) or MK-801 (MK; NMDA antagonist) was able to disrupt or alter grooming syntaxes. ...

Este documento corresponde con la memoria completa del X Congreso Internacional sobre Sistemática y Ecología de Mixomicetes (ICSEM10) celebrado en la Sede del Atlántico de la Universidad de Costa Rica entre el 25 y el 28 ...

Grooming is a widespread behavior in the animal kingdom primarily geared towards the care of the body surface; nonetheless, other behavioral functions have been investigated and postulated. For example, rodents display ...

In ectotherms such as lizards, temperature is a key determinant of their behavior and their ability to signal to conspecifics. We asked whether changes in the thermal environment along the distribution of an agamid lizard, ...

Sexual size dimorphism (SSD) is the result of sexual or natural selection operating differently on the body sizes of females and males. Males of most lizard species are larger than females, suggesting intrasexual selection on ...

Establishing dominance is an important mechanism for determining access to resources such as mates or territories. However, levels of aggression and dominance may vary among populations based on history and variation in ...

Las especies de dinoflagelados del género Dinophysis son reconocidas por la producción de toxinas diarreicas que afectan al ser humano produciéndole el síndrome DSP por sus siglas en inglés, mejor conocido como ...

Las aves cumplen un rol crítico en los bosques tropicales al polinizar flores y dispersar las semillas de muchas especies (Kato 2017, Rocca y Sazima 2008, Stiles y Skuth 1989). Los colibríes son el principal grupo de aves ...