The video shows the movement of individuals of the Green-and-Black Poison Dart Frog, Dendrobates auratus, under rainy conditions. The filmed individuals moved close to the researchers and in close proximity of conspecifics. ...

Muchos individuos de la especie Homo sapiens consideran estar separada del resto de criaturas del Reino Animal. Esto implica que hay un desligamiento de las relaciones entre el ser humano y el entorno natural, cuyas causas ...

Random and non-random mating result from sexual selection, and both can occur across populations of the same species. Body size is a trait commonly used to determine if mating is random or non-random, and for the latter ...

Hemidactylus frenatus is an invasive species in the Americas that has succeeded in establishing populations in Costa Rica (Savage 2002. The Amphibians and Reptiles of Costa Rica: A Herpetofauna between Two Continents, ...

In this note an aggressive encounter between a brown vine snake (Oxybelis aeneus) and a clay-colored thrush (Turdus grayi) is reported. The observations took place in the campus of the University of Costa Rica, Limón ...

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, ...

Ecologists have long been intrigued by which factors influence habitat use by an organism and how communities are structured. However, the links between habitat preferences, morphology, biotic interactions and community ...

Many aspects of the biology of various snake species remain unknown, and the extent of this lack of information is not always clear. As new research usually depends upon previous findings, the gaps in our knowledge and ...

The continuous release of pharmaceuticals from WWTP effluents to freshwater is a matter of concern, due to their potential effects on non-target organisms. The occurrence of pharmaceuticals in WWTPs and their associated ...

The moist chamber technique, as it is used in myxomycete research, is an extremely useful method to optimize project resources. However, as it occurs with any laboratory-based protocol, the usefulness of this technique ...