Island faunas can be characterized by gigantism in small animals and dwarfism in large
animals, but the extent to which this so-called 'island rule'provides a general explanation for …

The radiation of Palearctic green toads (Bufotes) holds great potential to evaluate the role of
hybridization in phylogeography at multiple stages along the speciation continuum. With …

Animals often need to signal to attract mates and behavioural signalling may impose
substantial energetic and fitness costs to signallers. Consequently, individuals often …

There are limits to the size of an individual that can be supported by a particular habitat.
Organisms that span a large size range during their ontogeny often need to alter their life …

In this study, we analysed the patterns of variation of the European treefrog's advertisement
call at four levels of organization: within individuals, within populations, among populations …

Only a few species of frogs, represented in four families (Bufonidae, Dendrobatidae,
Hylidae, and Leptodactylidae), inhabit elevations above 3000 m in the tropical Andes, an …

We describe the spatial pattern of variation of morphometric characters and call acoustic
properties of tetraploid green toads [Bufo viridis complex) from eight populations in Central …

Females of iteroparous species may compromise between contrasting reproductive
strategies. They should balance the amount of energy devoted to reproduction against the …

During their complex life cycle, anurans are faced with various physiological and
biochemical demands that can result in increased free radical production. The antioxidative …

Age determination in amphibians is crucial to the investigation of life-history traits. In this
context, we studied, for the first time, the life-history traits of Boana pulchella from a sample …