Content with tag amphibians .

The invasive red swamp crayfish increases infection of the amphibian chytrid fungus

Chytridiomycosis, caused by Batrachochytrium dendrobatidis (Bd), is considered one of the most important causes for the decline of amphibian populations worldwide. Identifying potential biological reservoirs and characterizing the role they can play in pathogen maintenance is not only important from a scientific point of view, but also relevant from an applied perspective (e.g. disease control strategies), especially when worldwide distributed invasive species are involved.

Iberian amphibians occupy higher mountain areas compared to the last century

extinctions. Amphibians are one of the most sensitive animal groups to climate change, currently undergoing a global decline. Predictive models for Europe and Iberian Peninsula forecast that the future impact of climate change on amphibians will depend on their capacity to alter their distributions by tracking climate warming. In the present study, the responses of Iberian amphibian species to recent climate change are explored by comparing amphibian distributions between two time periods...

Eucalypt plantations disturb the development of amphibian larvae

Consequences of human actions like global warming, spread of exotic species or resource consumption are pushing species to extinction. Even species considered to be at low extinction risk often show signs of local declines. Here, the impact of eucalypt plantations, the best-known exotic tree species worldwide, was evaluated as well as its interaction with temperature and predators on amphibian development, growth, antipredator responses and physiology. For this purpose, a fully factorial...

Macroevolutionary shift in the size of amphibian genomes and the role of life history and climate

Genome size varies enormously from one species to another, and amphibians are the group of vertebrates where genome size varies the most. Amphibians are also really old lineages that have been evolving for millions of years, diversifying and adapting to highly contrasting environments, from the warm and humid tropics to cold regions at high latitudes or high elevations. Amphibians have also evolved a frenzy of reproductive modes ranging from the well known case of aquatic tadpoles that...

Physiological mechanisms of adaptive developmental plasticity in Rana temporaria island populations

Adaptive plasticity is essential for many species to cope with environmental heterogeneity. In particular, developmental plasticity allows organisms with complex life cycles to adaptively adjust the timing of ontogenetic switch points. In this study, the physiological mechanisms underlying divergent degrees of developmental plasticity across Rana temporaria island populations inhabiting different types of pools in northern Sweden is investigated.